openmp/runtime/src/kmp.h

/*! \file */
/*
 * kmp.h -- KPTS runtime header file.
 */


//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.txt for details.
//
//===----------------------------------------------------------------------===//


#ifndef KMP_H
#define KMP_H

#include "kmp_config.h"

/* #define BUILD_PARALLEL_ORDERED 1 */

/* This fix replaces gettimeofday with clock_gettime for better scalability on
   the Altix.  Requires user code to be linked with -lrt.
*/
//#define FIX_SGI_CLOCK

/* Defines for OpenMP 3.0 tasking and auto scheduling */

# ifndef KMP_STATIC_STEAL_ENABLED
#  define KMP_STATIC_STEAL_ENABLED 1
# endif

#define TASK_CURRENT_NOT_QUEUED  0
#define TASK_CURRENT_QUEUED      1

#ifdef BUILD_TIED_TASK_STACK
#define TASK_STACK_EMPTY         0  // entries when the stack is empty

#define TASK_STACK_BLOCK_BITS    5  // Used to define TASK_STACK_SIZE and TASK_STACK_MASK
#define TASK_STACK_BLOCK_SIZE    ( 1 << TASK_STACK_BLOCK_BITS ) // Number of entries in each task stack array
#define TASK_STACK_INDEX_MASK    ( TASK_STACK_BLOCK_SIZE - 1 )  // Mask for determining index into stack block
#endif // BUILD_TIED_TASK_STACK

#define TASK_NOT_PUSHED          1
#define TASK_SUCCESSFULLY_PUSHED 0
#define TASK_TIED                1
#define TASK_UNTIED              0
#define TASK_EXPLICIT            1
#define TASK_IMPLICIT            0
#define TASK_PROXY               1
#define TASK_FULL                0

#define KMP_CANCEL_THREADS
#define KMP_THREAD_ATTR

// Android does not have pthread_cancel.  Undefine KMP_CANCEL_THREADS if being
// built on Android
#if defined(__ANDROID__)
#undef KMP_CANCEL_THREADS
#endif

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdarg.h>
#include <string.h>
#include <signal.h>
/*  include <ctype.h> don't use; problems with /MD on Windows* OS NT due to bad Microsoft library  */
/*  some macros provided below to replace some of these functions  */
#ifndef __ABSOFT_WIN
#include <sys/types.h>
#endif
#include <limits.h>
#include <time.h>

#include <errno.h>

#include "kmp_os.h"

#include "kmp_safe_c_api.h"

#if KMP_STATS_ENABLED
class kmp_stats_list;
#endif

#if KMP_USE_HWLOC && KMP_AFFINITY_SUPPORTED
# include "hwloc.h"
#endif

#if KMP_ARCH_X86 || KMP_ARCH_X86_64
#include <xmmintrin.h>
#endif

#include "kmp_version.h"
#include "kmp_debug.h"
#include "kmp_lock.h"
#if USE_DEBUGGER
#include "kmp_debugger.h"
#endif
#include "kmp_i18n.h"

#define KMP_HANDLE_SIGNALS (KMP_OS_UNIX || KMP_OS_WINDOWS)

#include "kmp_wrapper_malloc.h"
#if KMP_OS_UNIX
# include <unistd.h>
# if !defined NSIG && defined _NSIG
#  define NSIG _NSIG
# endif
#endif

#if KMP_OS_LINUX
# pragma weak clock_gettime
#endif

#if OMPT_SUPPORT
#include "ompt-internal.h"
#endif

/*Select data placement in NUMA memory */
#define NO_FIRST_TOUCH 0
#define FIRST_TOUCH 1       /* Exploit SGI's first touch page placement algo */

/* If not specified on compile command line, assume no first touch */
#ifndef BUILD_MEMORY
#define BUILD_MEMORY NO_FIRST_TOUCH
#endif

// 0 - no fast memory allocation, alignment: 8-byte on x86, 16-byte on x64.
// 3 - fast allocation using sync, non-sync free lists of any size, non-self free lists of limited size.
#ifndef USE_FAST_MEMORY
#define USE_FAST_MEMORY 3
#endif

#ifndef KMP_NESTED_HOT_TEAMS
# define KMP_NESTED_HOT_TEAMS 0
# define USE_NESTED_HOT_ARG(x)
#else
# if KMP_NESTED_HOT_TEAMS
#  if OMP_40_ENABLED
#   define USE_NESTED_HOT_ARG(x) ,x
#  else
// Nested hot teams feature depends on omp 4.0, disable it for earlier versions
#   undef KMP_NESTED_HOT_TEAMS
#   define KMP_NESTED_HOT_TEAMS 0
#   define USE_NESTED_HOT_ARG(x)
#  endif
# else
#  define USE_NESTED_HOT_ARG(x)
# endif
#endif

// Assume using BGET compare_exchange instruction instead of lock by default.
#ifndef USE_CMP_XCHG_FOR_BGET
#define USE_CMP_XCHG_FOR_BGET 1
#endif

// Test to see if queuing lock is better than bootstrap lock for bget
// #ifndef USE_QUEUING_LOCK_FOR_BGET
// #define USE_QUEUING_LOCK_FOR_BGET
// #endif

#define KMP_NSEC_PER_SEC 1000000000L
#define KMP_USEC_PER_SEC 1000000L

/*!
@ingroup BASIC_TYPES
@{
*/

// FIXME DOXYGEN... need to group these flags somehow (Making them an anonymous enum would do it...)
/*!
Values for bit flags used in the ident_t to describe the fields.
*/
/*! Use trampoline for internal microtasks */
#define KMP_IDENT_IMB             0x01
/*! Use c-style ident structure */
#define KMP_IDENT_KMPC            0x02
/* 0x04 is no longer used */
/*! Entry point generated by auto-parallelization */
#define KMP_IDENT_AUTOPAR         0x08
/*! Compiler generates atomic reduction option for kmpc_reduce* */
#define KMP_IDENT_ATOMIC_REDUCE   0x10
/*! To mark a 'barrier' directive in user code */
#define KMP_IDENT_BARRIER_EXPL    0x20
/*! To Mark implicit barriers. */
#define KMP_IDENT_BARRIER_IMPL           0x0040
#define KMP_IDENT_BARRIER_IMPL_MASK      0x01C0
#define KMP_IDENT_BARRIER_IMPL_FOR       0x0040
#define KMP_IDENT_BARRIER_IMPL_SECTIONS  0x00C0

#define KMP_IDENT_BARRIER_IMPL_SINGLE    0x0140
#define KMP_IDENT_BARRIER_IMPL_WORKSHARE 0x01C0

/*!
 * The ident structure that describes a source location.
 */
typedef struct ident {
    kmp_int32 reserved_1;   /**<  might be used in Fortran; see above  */
    kmp_int32 flags;        /**<  also f.flags; KMP_IDENT_xxx flags; KMP_IDENT_KMPC identifies this union member  */
    kmp_int32 reserved_2;   /**<  not really used in Fortran any more; see above */
#if USE_ITT_BUILD
                            /*  but currently used for storing region-specific ITT */
                            /*  contextual information. */
#endif /* USE_ITT_BUILD */
    kmp_int32 reserved_3;   /**< source[4] in Fortran, do not use for C++  */
    char const *psource;    /**< String describing the source location.
                            The string is composed of semi-colon separated fields which describe the source file,
                            the function and a pair of line numbers that delimit the construct.
                             */
} ident_t;
/*!
@}
*/

// Some forward declarations.

typedef union  kmp_team      kmp_team_t;
typedef struct kmp_taskdata  kmp_taskdata_t;
typedef union  kmp_task_team kmp_task_team_t;
typedef union  kmp_team      kmp_team_p;
typedef union  kmp_info      kmp_info_p;
typedef union  kmp_root      kmp_root_p;

#ifdef __cplusplus
extern "C" {
#endif

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

/* Pack two 32-bit signed integers into a 64-bit signed integer */
/* ToDo: Fix word ordering for big-endian machines. */
#define KMP_PACK_64(HIGH_32,LOW_32) \
    ( (kmp_int64) ((((kmp_uint64)(HIGH_32))<<32) | (kmp_uint64)(LOW_32)) )


/*
 * Generic string manipulation macros.
 * Assume that _x is of type char *
 */
#define SKIP_WS(_x)     { while (*(_x) == ' ' || *(_x) == '\t') (_x)++; }
#define SKIP_DIGITS(_x) { while (*(_x) >= '0' && *(_x) <= '9') (_x)++; }
#define SKIP_TO(_x,_c)  { while (*(_x) != '\0' && *(_x) != (_c)) (_x)++; }

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

#define KMP_MAX( x, y ) ( (x) > (y) ? (x) : (y) )
#define KMP_MIN( x, y ) ( (x) < (y) ? (x) : (y) )

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */


/* Enumeration types */

enum kmp_state_timer {
    ts_stop,
    ts_start,
    ts_pause,

    ts_last_state
};

enum dynamic_mode {
    dynamic_default,
#ifdef USE_LOAD_BALANCE
    dynamic_load_balance,
#endif /* USE_LOAD_BALANCE */
    dynamic_random,
    dynamic_thread_limit,
    dynamic_max
};

/* external schedule constants, duplicate enum omp_sched in omp.h in order to not include it here */
#ifndef KMP_SCHED_TYPE_DEFINED
#define KMP_SCHED_TYPE_DEFINED
typedef enum kmp_sched {
    kmp_sched_lower             = 0,     // lower and upper bounds are for routine parameter check
    // Note: need to adjust __kmp_sch_map global array in case this enum is changed
    kmp_sched_static            = 1,     // mapped to kmp_sch_static_chunked           (33)
    kmp_sched_dynamic           = 2,     // mapped to kmp_sch_dynamic_chunked          (35)
    kmp_sched_guided            = 3,     // mapped to kmp_sch_guided_chunked           (36)
    kmp_sched_auto              = 4,     // mapped to kmp_sch_auto                     (38)
    kmp_sched_upper_std         = 5,     // upper bound for standard schedules
    kmp_sched_lower_ext         = 100,   // lower bound of Intel extension schedules
    kmp_sched_trapezoidal       = 101,   // mapped to kmp_sch_trapezoidal              (39)
#if KMP_STATIC_STEAL_ENABLED
    kmp_sched_static_steal      = 102,   // mapped to kmp_sch_static_steal             (44)
#endif
    kmp_sched_upper,
    kmp_sched_default = kmp_sched_static // default scheduling
} kmp_sched_t;
#endif

/*!
 @ingroup WORK_SHARING
 * Describes the loop schedule to be used for a parallel for loop.
 */
enum sched_type {
    kmp_sch_lower                     = 32,   /**< lower bound for unordered values */
    kmp_sch_static_chunked            = 33,
    kmp_sch_static                    = 34,   /**< static unspecialized */
    kmp_sch_dynamic_chunked           = 35,
    kmp_sch_guided_chunked            = 36,   /**< guided unspecialized */
    kmp_sch_runtime                   = 37,
    kmp_sch_auto                      = 38,   /**< auto */
    kmp_sch_trapezoidal               = 39,

    /* accessible only through KMP_SCHEDULE environment variable */
    kmp_sch_static_greedy             = 40,
    kmp_sch_static_balanced           = 41,
    /* accessible only through KMP_SCHEDULE environment variable */
    kmp_sch_guided_iterative_chunked  = 42,
    kmp_sch_guided_analytical_chunked = 43,

    kmp_sch_static_steal              = 44,   /**< accessible only through KMP_SCHEDULE environment variable */

#if OMP_45_ENABLED
    kmp_sch_static_balanced_chunked   = 45,   /**< static with chunk adjustment (e.g., simd) */
#endif

    /* accessible only through KMP_SCHEDULE environment variable */
    kmp_sch_upper                     = 46,   /**< upper bound for unordered values */

    kmp_ord_lower                     = 64,   /**< lower bound for ordered values, must be power of 2 */
    kmp_ord_static_chunked            = 65,
    kmp_ord_static                    = 66,   /**< ordered static unspecialized */
    kmp_ord_dynamic_chunked           = 67,
    kmp_ord_guided_chunked            = 68,
    kmp_ord_runtime                   = 69,
    kmp_ord_auto                      = 70,   /**< ordered auto */
    kmp_ord_trapezoidal               = 71,
    kmp_ord_upper                     = 72,   /**< upper bound for ordered values */

#if OMP_40_ENABLED
    /* Schedules for Distribute construct */
    kmp_distribute_static_chunked     = 91,   /**< distribute static chunked */
    kmp_distribute_static             = 92,   /**< distribute static unspecialized */
#endif

    /*
     * For the "nomerge" versions, kmp_dispatch_next*() will always return
     * a single iteration/chunk, even if the loop is serialized.  For the
     * schedule types listed above, the entire iteration vector is returned
     * if the loop is serialized.  This doesn't work for gcc/gcomp sections.
     */
    kmp_nm_lower                      = 160,  /**< lower bound for nomerge values */

    kmp_nm_static_chunked             = (kmp_sch_static_chunked - kmp_sch_lower + kmp_nm_lower),
    kmp_nm_static                     = 162,  /**< static unspecialized */
    kmp_nm_dynamic_chunked            = 163,
    kmp_nm_guided_chunked             = 164,  /**< guided unspecialized */
    kmp_nm_runtime                    = 165,
    kmp_nm_auto                       = 166,  /**< auto */
    kmp_nm_trapezoidal                = 167,

    /* accessible only through KMP_SCHEDULE environment variable */
    kmp_nm_static_greedy              = 168,
    kmp_nm_static_balanced            = 169,
    /* accessible only through KMP_SCHEDULE environment variable */
    kmp_nm_guided_iterative_chunked   = 170,
    kmp_nm_guided_analytical_chunked  = 171,
    kmp_nm_static_steal               = 172,  /* accessible only through OMP_SCHEDULE environment variable */

    kmp_nm_ord_static_chunked         = 193,
    kmp_nm_ord_static                 = 194,  /**< ordered static unspecialized */
    kmp_nm_ord_dynamic_chunked        = 195,
    kmp_nm_ord_guided_chunked         = 196,
    kmp_nm_ord_runtime                = 197,
    kmp_nm_ord_auto                   = 198,  /**< auto */
    kmp_nm_ord_trapezoidal            = 199,
    kmp_nm_upper                      = 200,  /**< upper bound for nomerge values */

#if OMP_45_ENABLED
    /* Support for OpenMP 4.5 monotonic and nonmonotonic schedule modifiers.
     * Since we need to distinguish the three possible cases (no modifier, monotonic modifier,
     * nonmonotonic modifier), we need separate bits for each modifier.
     * The absence of monotonic does not imply nonmonotonic, especially since 4.5 says
     * that the behaviour of the "no modifier" case is implementation defined in 4.5,
     * but will become "nonmonotonic" in 5.0.
     *
     * Since we're passing a full 32 bit value, we can use a couple of high bits for these
     * flags; out of paranoia we avoid the sign bit.
     *
     * These modifiers can be or-ed into non-static schedules by the compiler to pass
     * the additional information.
     * They will be stripped early in the processing in __kmp_dispatch_init when setting up schedules, so
     * most of the code won't ever see schedules with these bits set.
     */
    kmp_sch_modifier_monotonic      = (1<<29), /**< Set if the monotonic schedule modifier was present */
    kmp_sch_modifier_nonmonotonic   = (1<<30), /**< Set if the nonmonotonic schedule modifier was present */

# define SCHEDULE_WITHOUT_MODIFIERS(s) (enum sched_type)((s) & ~ (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic))
# define SCHEDULE_HAS_MONOTONIC(s)     (((s) & kmp_sch_modifier_monotonic)    != 0)
# define SCHEDULE_HAS_NONMONOTONIC(s)  (((s) & kmp_sch_modifier_nonmonotonic) != 0)
# define SCHEDULE_HAS_NO_MODIFIERS(s)  (((s) & (kmp_sch_modifier_nonmonotonic | kmp_sch_modifier_monotonic)) == 0)
#else
    /* By doing this we hope to avoid multiple tests on OMP_45_ENABLED. Compilers can now eliminate tests on compile time
     * constants and dead code that results from them, so we can leave code guarded by such an if in place.
     */
# define SCHEDULE_WITHOUT_MODIFIERS(s) (s)
# define SCHEDULE_HAS_MONOTONIC(s)     false
# define SCHEDULE_HAS_NONMONOTONIC(s)  false
# define SCHEDULE_HAS_NO_MODIFIERS(s)  true
#endif

    kmp_sch_default = kmp_sch_static  /**< default scheduling algorithm */
};

/* Type to keep runtime schedule set via OMP_SCHEDULE or omp_set_schedule() */
typedef struct kmp_r_sched {
    enum sched_type r_sched_type;
    int             chunk;
} kmp_r_sched_t;

extern enum sched_type __kmp_sch_map[]; // map OMP 3.0 schedule types with our internal schedule types

enum library_type {
    library_none,
    library_serial,
    library_turnaround,
    library_throughput
};

#if KMP_OS_LINUX
enum clock_function_type {
    clock_function_gettimeofday,
    clock_function_clock_gettime
};
#endif /* KMP_OS_LINUX */

#if KMP_ARCH_X86_64 && (KMP_OS_LINUX || KMP_OS_WINDOWS)
enum mic_type {
    non_mic,
    mic1,
    mic2,
    mic3,
    dummy
};
#endif

/* ------------------------------------------------------------------------ */
/* -- fast reduction stuff ------------------------------------------------ */

#undef KMP_FAST_REDUCTION_BARRIER
#define KMP_FAST_REDUCTION_BARRIER 1

#undef KMP_FAST_REDUCTION_CORE_DUO
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
    #define KMP_FAST_REDUCTION_CORE_DUO 1
#endif

enum _reduction_method {
    reduction_method_not_defined = 0,
    critical_reduce_block        = ( 1 << 8 ),
    atomic_reduce_block          = ( 2 << 8 ),
    tree_reduce_block            = ( 3 << 8 ),
    empty_reduce_block           = ( 4 << 8 )
};

// description of the packed_reduction_method variable
// the packed_reduction_method variable consists of two enum types variables that are packed together into 0-th byte and 1-st byte:
// 0: ( packed_reduction_method & 0x000000FF ) is a 'enum barrier_type' value of barrier that will be used in fast reduction: bs_plain_barrier or bs_reduction_barrier
// 1: ( packed_reduction_method & 0x0000FF00 ) is a reduction method that will be used in fast reduction;
// reduction method is of 'enum _reduction_method' type and it's defined the way so that the bits of 0-th byte are empty,
// so no need to execute a shift instruction while packing/unpacking

#if KMP_FAST_REDUCTION_BARRIER
    #define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method,barrier_type) \
            ( ( reduction_method ) | ( barrier_type ) )

    #define UNPACK_REDUCTION_METHOD(packed_reduction_method) \
            ( ( enum _reduction_method )( ( packed_reduction_method ) & ( 0x0000FF00 ) ) )

    #define UNPACK_REDUCTION_BARRIER(packed_reduction_method) \
            ( ( enum barrier_type )(      ( packed_reduction_method ) & ( 0x000000FF ) ) )
#else
    #define PACK_REDUCTION_METHOD_AND_BARRIER(reduction_method,barrier_type) \
            ( reduction_method )

    #define UNPACK_REDUCTION_METHOD(packed_reduction_method) \
            ( packed_reduction_method )

    #define UNPACK_REDUCTION_BARRIER(packed_reduction_method) \
            ( bs_plain_barrier )
#endif

#define TEST_REDUCTION_METHOD(packed_reduction_method,which_reduction_block) \
            ( ( UNPACK_REDUCTION_METHOD( packed_reduction_method ) ) == ( which_reduction_block ) )

#if KMP_FAST_REDUCTION_BARRIER
    #define TREE_REDUCE_BLOCK_WITH_REDUCTION_BARRIER \
            ( PACK_REDUCTION_METHOD_AND_BARRIER( tree_reduce_block, bs_reduction_barrier ) )

    #define TREE_REDUCE_BLOCK_WITH_PLAIN_BARRIER \
            ( PACK_REDUCTION_METHOD_AND_BARRIER( tree_reduce_block, bs_plain_barrier ) )
#endif

typedef int PACKED_REDUCTION_METHOD_T;

/* -- end of fast reduction stuff ----------------------------------------- */

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

#if KMP_OS_WINDOWS
# define USE_CBLKDATA
# pragma warning( push )
# pragma warning( disable: 271 310 )
# include <windows.h>
# pragma warning( pop )
#endif

#if KMP_OS_UNIX
# include <pthread.h>
# include <dlfcn.h>
#endif

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

/*
 * Only Linux* OS and Windows* OS support thread affinity.
 */
#if KMP_AFFINITY_SUPPORTED

// GROUP_AFFINITY is already defined for _MSC_VER>=1600 (VS2010 and later).
# if KMP_OS_WINDOWS
#  if _MSC_VER < 1600
typedef struct GROUP_AFFINITY {
    KAFFINITY Mask;
    WORD Group;
    WORD Reserved[3];
} GROUP_AFFINITY;
#  endif /* _MSC_VER < 1600 */
#  if KMP_GROUP_AFFINITY
extern int __kmp_num_proc_groups;
#  else
static const int __kmp_num_proc_groups = 1;
#  endif /* KMP_GROUP_AFFINITY */
typedef DWORD (*kmp_GetActiveProcessorCount_t)(WORD);
extern kmp_GetActiveProcessorCount_t __kmp_GetActiveProcessorCount;

typedef WORD (*kmp_GetActiveProcessorGroupCount_t)(void);
extern kmp_GetActiveProcessorGroupCount_t __kmp_GetActiveProcessorGroupCount;

typedef BOOL (*kmp_GetThreadGroupAffinity_t)(HANDLE, GROUP_AFFINITY *);
extern kmp_GetThreadGroupAffinity_t __kmp_GetThreadGroupAffinity;

typedef BOOL (*kmp_SetThreadGroupAffinity_t)(HANDLE, const GROUP_AFFINITY *, GROUP_AFFINITY *);
extern kmp_SetThreadGroupAffinity_t __kmp_SetThreadGroupAffinity;
# endif /* KMP_OS_WINDOWS */

# if KMP_USE_HWLOC
extern hwloc_topology_t __kmp_hwloc_topology;
extern int __kmp_hwloc_error;
# endif

extern size_t __kmp_affin_mask_size;
# define KMP_AFFINITY_CAPABLE() (__kmp_affin_mask_size > 0)
# define KMP_AFFINITY_DISABLE() (__kmp_affin_mask_size = 0)
# define KMP_AFFINITY_ENABLE(mask_size) (__kmp_affin_mask_size = mask_size)
# define KMP_CPU_SET_ITERATE(i,mask) \
    for (i = (mask)->begin(); i != (mask)->end() ; i = (mask)->next(i))
# define KMP_CPU_SET(i,mask) (mask)->set(i)
# define KMP_CPU_ISSET(i,mask) (mask)->is_set(i)
# define KMP_CPU_CLR(i,mask) (mask)->clear(i)
# define KMP_CPU_ZERO(mask) (mask)->zero()
# define KMP_CPU_COPY(dest, src) (dest)->copy(src)
# define KMP_CPU_AND(dest, src) (dest)->bitwise_and(src)
# define KMP_CPU_COMPLEMENT(max_bit_number, mask) (mask)->bitwise_not()
# define KMP_CPU_UNION(dest, src) (dest)->bitwise_or(src)
# define KMP_CPU_ALLOC(ptr) (ptr = __kmp_affinity_dispatch->allocate_mask())
# define KMP_CPU_FREE(ptr) __kmp_affinity_dispatch->deallocate_mask(ptr)
# define KMP_CPU_ALLOC_ON_STACK(ptr) KMP_CPU_ALLOC(ptr)
# define KMP_CPU_FREE_FROM_STACK(ptr) KMP_CPU_FREE(ptr)
# define KMP_CPU_INTERNAL_ALLOC(ptr) KMP_CPU_ALLOC(ptr)
# define KMP_CPU_INTERNAL_FREE(ptr) KMP_CPU_FREE(ptr)
# define KMP_CPU_INDEX(arr,i) __kmp_affinity_dispatch->index_mask_array(arr, i)
# define KMP_CPU_ALLOC_ARRAY(arr, n) (arr = __kmp_affinity_dispatch->allocate_mask_array(n))
# define KMP_CPU_FREE_ARRAY(arr, n) __kmp_affinity_dispatch->deallocate_mask_array(arr)
# define KMP_CPU_INTERNAL_ALLOC_ARRAY(arr, n) KMP_CPU_ALLOC_ARRAY(arr, n)
# define KMP_CPU_INTERNAL_FREE_ARRAY(arr, n) KMP_CPU_FREE_ARRAY(arr, n)
# define __kmp_get_system_affinity(mask, abort_bool) (mask)->get_system_affinity(abort_bool)
# define __kmp_set_system_affinity(mask, abort_bool) (mask)->set_system_affinity(abort_bool)
# define __kmp_get_proc_group(mask) (mask)->get_proc_group()

class KMPAffinity {
public:
    class Mask {
    public:
        void* operator new(size_t n);
        void operator delete(void* p);
        void* operator new[](size_t n);
        void operator delete[](void* p);
        virtual ~Mask() {}
        // Set bit i to 1
        virtual void set(int i) {}
        // Return bit i
        virtual bool is_set(int i) const { return false; }
        // Set bit i to 0
        virtual void clear(int i) {}
        // Zero out entire mask
        virtual void zero() {}
        // Copy src into this mask
        virtual void copy(const Mask* src) {}
        // this &= rhs
        virtual void bitwise_and(const Mask* rhs) {}
        // this |= rhs
        virtual void bitwise_or(const Mask* rhs) {}
        // this = ~this
        virtual void bitwise_not() {}
        // API for iterating over an affinity mask
        // for (int i = mask->begin(); i != mask->end(); i = mask->next(i))
        virtual int begin() const { return 0; }
        virtual int end() const { return 0; }
        virtual int next(int previous) const { return 0; }
        // Set the system's affinity to this affinity mask's value
        virtual int set_system_affinity(bool abort_on_error) const { return -1; }
        // Set this affinity mask to the current system affinity
        virtual int get_system_affinity(bool abort_on_error) { return -1; }
        // Only 1 DWORD in the mask should have any procs set.
        // Return the appropriate index, or -1 for an invalid mask.
        virtual int get_proc_group() const { return -1; }
    };
    void* operator new(size_t n);
    void operator delete(void* p);
    // Determine if affinity is capable
    virtual void determine_capable(const char* env_var) {}
    // Bind the current thread to os proc
    virtual void bind_thread(int proc) {}
    // Factory functions to allocate/deallocate a mask
    virtual Mask* allocate_mask() { return nullptr; }
    virtual void deallocate_mask(Mask* m) { }
    virtual Mask* allocate_mask_array(int num) { return nullptr; }
    virtual void deallocate_mask_array(Mask* m) { }
    virtual Mask* index_mask_array(Mask* m, int index) { return nullptr; }
    static void pick_api();
    static void destroy_api();
    enum api_type {
        NATIVE_OS
#if KMP_USE_HWLOC
        , HWLOC
#endif
    };
    virtual api_type get_api_type() const { KMP_ASSERT(0); return NATIVE_OS; };
private:
    static bool picked_api;
};

typedef KMPAffinity::Mask kmp_affin_mask_t;
extern KMPAffinity* __kmp_affinity_dispatch;

//
// Declare local char buffers with this size for printing debug and info
// messages, using __kmp_affinity_print_mask().
//
#define KMP_AFFIN_MASK_PRINT_LEN        1024

enum affinity_type {
    affinity_none = 0,
    affinity_physical,
    affinity_logical,
    affinity_compact,
    affinity_scatter,
    affinity_explicit,
    affinity_balanced,
    affinity_disabled,  // not used outsize the env var parser
    affinity_default
};

enum affinity_gran {
    affinity_gran_fine = 0,
    affinity_gran_thread,
    affinity_gran_core,
    affinity_gran_package,
    affinity_gran_node,
#if KMP_GROUP_AFFINITY
    //
    // The "group" granularity isn't necesssarily coarser than all of the
    // other levels, but we put it last in the enum.
    //
    affinity_gran_group,
#endif /* KMP_GROUP_AFFINITY */
    affinity_gran_default
};

enum affinity_top_method {
    affinity_top_method_all = 0, // try all (supported) methods, in order
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
    affinity_top_method_apicid,
    affinity_top_method_x2apicid,
#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
    affinity_top_method_cpuinfo, // KMP_CPUINFO_FILE is usable on Windows* OS, too
#if KMP_GROUP_AFFINITY
    affinity_top_method_group,
#endif /* KMP_GROUP_AFFINITY */
    affinity_top_method_flat,
#if KMP_USE_HWLOC
    affinity_top_method_hwloc,
#endif
    affinity_top_method_default
};

#define affinity_respect_mask_default   (-1)

extern enum affinity_type __kmp_affinity_type; /* Affinity type */
extern enum affinity_gran __kmp_affinity_gran; /* Affinity granularity */
extern int __kmp_affinity_gran_levels; /* corresponding int value */
extern int __kmp_affinity_dups; /* Affinity duplicate masks */
extern enum affinity_top_method __kmp_affinity_top_method;
extern int __kmp_affinity_compact; /* Affinity 'compact' value */
extern int __kmp_affinity_offset; /* Affinity offset value  */
extern int __kmp_affinity_verbose; /* Was verbose specified for KMP_AFFINITY? */
extern int __kmp_affinity_warnings; /* KMP_AFFINITY warnings enabled ? */
extern int __kmp_affinity_respect_mask; /* Respect process' initial affinity mask? */
extern char * __kmp_affinity_proclist; /* proc ID list */
extern kmp_affin_mask_t *__kmp_affinity_masks;
extern unsigned __kmp_affinity_num_masks;
extern void __kmp_affinity_bind_thread(int which);

extern kmp_affin_mask_t *__kmp_affin_fullMask;
extern char const * __kmp_cpuinfo_file;

#endif /* KMP_AFFINITY_SUPPORTED */

#if OMP_40_ENABLED

//
// This needs to be kept in sync with the values in omp.h !!!
//
typedef enum kmp_proc_bind_t {
    proc_bind_false = 0,
    proc_bind_true,
    proc_bind_master,
    proc_bind_close,
    proc_bind_spread,
    proc_bind_intel,    // use KMP_AFFINITY interface
    proc_bind_default
} kmp_proc_bind_t;

typedef struct kmp_nested_proc_bind_t {
    kmp_proc_bind_t *bind_types;
    int size;
    int used;
} kmp_nested_proc_bind_t;

extern kmp_nested_proc_bind_t __kmp_nested_proc_bind;

#endif /* OMP_40_ENABLED */

# if KMP_AFFINITY_SUPPORTED
#  define KMP_PLACE_ALL       (-1)
#  define KMP_PLACE_UNDEFINED (-2)
# endif /* KMP_AFFINITY_SUPPORTED */

extern int __kmp_affinity_num_places;


#if OMP_40_ENABLED
typedef enum kmp_cancel_kind_t {
    cancel_noreq = 0,
    cancel_parallel = 1,
    cancel_loop = 2,
    cancel_sections = 3,
    cancel_taskgroup = 4
} kmp_cancel_kind_t;
#endif // OMP_40_ENABLED

extern int __kmp_place_num_sockets;
extern int __kmp_place_socket_offset;
extern int __kmp_place_num_cores;
extern int __kmp_place_core_offset;
extern int __kmp_place_num_threads_per_core;

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

#define KMP_PAD(type, sz)     (sizeof(type) + (sz - ((sizeof(type) - 1) % (sz)) - 1))

//
// We need to avoid using -1 as a GTID as +1 is added to the gtid
// when storing it in a lock, and the value 0 is reserved.
//
#define KMP_GTID_DNE            (-2)    /* Does not exist */
#define KMP_GTID_SHUTDOWN       (-3)    /* Library is shutting down */
#define KMP_GTID_MONITOR        (-4)    /* Monitor thread ID */
#define KMP_GTID_UNKNOWN        (-5)    /* Is not known */
#define KMP_GTID_MIN            (-6)    /* Minimal gtid for low bound check in DEBUG */

#define __kmp_get_gtid()               __kmp_get_global_thread_id()
#define __kmp_entry_gtid()             __kmp_get_global_thread_id_reg()

#define __kmp_tid_from_gtid(gtid)     ( KMP_DEBUG_ASSERT( (gtid) >= 0 ), \
                                        __kmp_threads[ (gtid) ]->th.th_info.ds.ds_tid )

#define __kmp_get_tid()               ( __kmp_tid_from_gtid( __kmp_get_gtid() ) )
#define __kmp_gtid_from_tid(tid,team) ( KMP_DEBUG_ASSERT( (tid) >= 0 && (team) != NULL ), \
                                        team -> t.t_threads[ (tid) ] -> th.th_info .ds.ds_gtid )

#define __kmp_get_team()              ( __kmp_threads[ (__kmp_get_gtid()) ]-> th.th_team )
#define __kmp_team_from_gtid(gtid)    ( KMP_DEBUG_ASSERT( (gtid) >= 0 ), \
                                        __kmp_threads[ (gtid) ]-> th.th_team )

#define __kmp_thread_from_gtid(gtid)  ( KMP_DEBUG_ASSERT( (gtid) >= 0 ), __kmp_threads[ (gtid) ] )
#define __kmp_get_thread()            ( __kmp_thread_from_gtid( __kmp_get_gtid() ) )

    // Returns current thread (pointer to kmp_info_t). In contrast to __kmp_get_thread(), it works
    // with registered and not-yet-registered threads.
#define __kmp_gtid_from_thread(thr)   ( KMP_DEBUG_ASSERT( (thr) != NULL ), \
                                        (thr)->th.th_info.ds.ds_gtid )

// AT: Which way is correct?
// AT: 1. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team -> t.t_nproc;
// AT: 2. nproc = __kmp_threads[ ( gtid ) ] -> th.th_team_nproc;
#define __kmp_get_team_num_threads(gtid) ( __kmp_threads[ ( gtid ) ] -> th.th_team -> t.t_nproc )


/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

#define KMP_UINT64_MAX         (~((kmp_uint64)1<<((sizeof(kmp_uint64)*(1<<3))-1)))

#define KMP_MIN_NTH           1

#ifndef KMP_MAX_NTH
#  if defined(PTHREAD_THREADS_MAX) && PTHREAD_THREADS_MAX < INT_MAX
#    define KMP_MAX_NTH          PTHREAD_THREADS_MAX
#  else
#    define KMP_MAX_NTH          INT_MAX
#  endif
#endif /* KMP_MAX_NTH */

#ifdef PTHREAD_STACK_MIN
# define KMP_MIN_STKSIZE         PTHREAD_STACK_MIN
#else
# define KMP_MIN_STKSIZE         ((size_t)(32 * 1024))
#endif

#define KMP_MAX_STKSIZE          (~((size_t)1<<((sizeof(size_t)*(1<<3))-1)))

#if KMP_ARCH_X86
# define KMP_DEFAULT_STKSIZE     ((size_t)(2 * 1024 * 1024))
#elif KMP_ARCH_X86_64
# define KMP_DEFAULT_STKSIZE     ((size_t)(4 * 1024 * 1024))
# define KMP_BACKUP_STKSIZE      ((size_t)(2 * 1024 * 1024))
#else
# define KMP_DEFAULT_STKSIZE     ((size_t)(1024 * 1024))
#endif

#define KMP_DEFAULT_MALLOC_POOL_INCR    ((size_t) (1024 * 1024))
#define KMP_MIN_MALLOC_POOL_INCR        ((size_t) (4 * 1024))
#define KMP_MAX_MALLOC_POOL_INCR        (~((size_t)1<<((sizeof(size_t)*(1<<3))-1)))

#define KMP_MIN_STKOFFSET       (0)
#define KMP_MAX_STKOFFSET       KMP_MAX_STKSIZE
#if KMP_OS_DARWIN
# define KMP_DEFAULT_STKOFFSET  KMP_MIN_STKOFFSET
#else
# define KMP_DEFAULT_STKOFFSET  CACHE_LINE
#endif

#define KMP_MIN_STKPADDING      (0)
#define KMP_MAX_STKPADDING      (2 * 1024 * 1024)

#define KMP_BLOCKTIME_MULTIPLIER     (1000)    /* number of blocktime units per second */
#define KMP_MIN_BLOCKTIME            (0)
#define KMP_MAX_BLOCKTIME            (INT_MAX) /* Must be this for "infinite" setting the work */
#define KMP_DEFAULT_BLOCKTIME        (200)     /*  __kmp_blocktime is in milliseconds  */

#if KMP_USE_MONITOR
#define KMP_DEFAULT_MONITOR_STKSIZE  ((size_t)(64 * 1024))
#define KMP_MIN_MONITOR_WAKEUPS      (1)       /* min number of times monitor wakes up per second */
#define KMP_MAX_MONITOR_WAKEUPS      (1000)    /* maximum number of times monitor can wake up per second */

/* Calculate new number of monitor wakeups for a specific block time based on previous monitor_wakeups */
/* Only allow increasing number of wakeups */
#define KMP_WAKEUPS_FROM_BLOCKTIME(blocktime, monitor_wakeups) \
                                 ( ((blocktime) == KMP_MAX_BLOCKTIME) ? (monitor_wakeups) : \
                                   ((blocktime) == KMP_MIN_BLOCKTIME) ? KMP_MAX_MONITOR_WAKEUPS : \
                                   ((monitor_wakeups) > (KMP_BLOCKTIME_MULTIPLIER / (blocktime))) ? (monitor_wakeups) : \
                                       (KMP_BLOCKTIME_MULTIPLIER) / (blocktime) )

/* Calculate number of intervals for a specific block time based on monitor_wakeups */
#define KMP_INTERVALS_FROM_BLOCKTIME(blocktime, monitor_wakeups)  \
                                 ( ( (blocktime) + (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)) - 1 ) /  \
                                   (KMP_BLOCKTIME_MULTIPLIER / (monitor_wakeups)) )
#endif // KMP_USE_MONITOR

#define KMP_MIN_STATSCOLS       40
#define KMP_MAX_STATSCOLS       4096
#define KMP_DEFAULT_STATSCOLS   80

#define KMP_MIN_INTERVAL        0
#define KMP_MAX_INTERVAL        (INT_MAX-1)
#define KMP_DEFAULT_INTERVAL    0

#define KMP_MIN_CHUNK           1
#define KMP_MAX_CHUNK           (INT_MAX-1)
#define KMP_DEFAULT_CHUNK       1

#define KMP_MIN_INIT_WAIT       1
#define KMP_MAX_INIT_WAIT       (INT_MAX/2)
#define KMP_DEFAULT_INIT_WAIT   2048U

#define KMP_MIN_NEXT_WAIT       1
#define KMP_MAX_NEXT_WAIT       (INT_MAX/2)
#define KMP_DEFAULT_NEXT_WAIT   1024U

#define KMP_DFLT_DISP_NUM_BUFF  7
#define KMP_MAX_ORDERED         8

#define KMP_MAX_FIELDS          32

#define KMP_MAX_BRANCH_BITS     31

#define KMP_MAX_ACTIVE_LEVELS_LIMIT INT_MAX

#define KMP_MAX_DEFAULT_DEVICE_LIMIT INT_MAX

#define KMP_MAX_TASK_PRIORITY_LIMIT INT_MAX

/* Minimum number of threads before switch to TLS gtid (experimentally determined) */
/* josh TODO: what about OS X* tuning? */
#if   KMP_ARCH_X86 || KMP_ARCH_X86_64
# define KMP_TLS_GTID_MIN     5
#else
# define KMP_TLS_GTID_MIN     INT_MAX
#endif

#define KMP_MASTER_TID(tid)      ( (tid) == 0 )
#define KMP_WORKER_TID(tid)      ( (tid) != 0 )

#define KMP_MASTER_GTID(gtid)    ( __kmp_tid_from_gtid((gtid)) == 0 )
#define KMP_WORKER_GTID(gtid)    ( __kmp_tid_from_gtid((gtid)) != 0 )
#define KMP_UBER_GTID(gtid)                                           \
    (                                                                 \
        KMP_DEBUG_ASSERT( (gtid) >= KMP_GTID_MIN ),                   \
        KMP_DEBUG_ASSERT( (gtid) < __kmp_threads_capacity ),          \
        (gtid) >= 0 && __kmp_root[(gtid)] && __kmp_threads[(gtid)] && \
        (__kmp_threads[(gtid)] == __kmp_root[(gtid)]->r.r_uber_thread)\
    )
#define KMP_INITIAL_GTID(gtid)   ( (gtid) == 0 )

#ifndef TRUE
#define FALSE   0
#define TRUE    (! FALSE)
#endif

/* NOTE: all of the following constants must be even */

#if KMP_OS_WINDOWS
#  define KMP_INIT_WAIT    64U          /* initial number of spin-tests   */
#  define KMP_NEXT_WAIT    32U          /* susequent number of spin-tests */
#elif KMP_OS_CNK
#  define KMP_INIT_WAIT    16U          /* initial number of spin-tests   */
#  define KMP_NEXT_WAIT     8U          /* susequent number of spin-tests */
#elif KMP_OS_LINUX
#  define KMP_INIT_WAIT  1024U          /* initial number of spin-tests   */
#  define KMP_NEXT_WAIT   512U          /* susequent number of spin-tests */
#elif KMP_OS_DARWIN
/* TODO: tune for KMP_OS_DARWIN */
#  define KMP_INIT_WAIT  1024U          /* initial number of spin-tests   */
#  define KMP_NEXT_WAIT   512U          /* susequent number of spin-tests */
#elif KMP_OS_FREEBSD
/* TODO: tune for KMP_OS_FREEBSD */
#  define KMP_INIT_WAIT  1024U          /* initial number of spin-tests   */
#  define KMP_NEXT_WAIT   512U          /* susequent number of spin-tests */
#elif KMP_OS_NETBSD
/* TODO: tune for KMP_OS_NETBSD */
#  define KMP_INIT_WAIT  1024U          /* initial number of spin-tests   */
#  define KMP_NEXT_WAIT   512U          /* susequent number of spin-tests */
#endif

#if KMP_ARCH_X86 || KMP_ARCH_X86_64
typedef struct kmp_cpuid {
    kmp_uint32  eax;
    kmp_uint32  ebx;
    kmp_uint32  ecx;
    kmp_uint32  edx;
} kmp_cpuid_t;
extern void __kmp_x86_cpuid( int mode, int mode2, struct kmp_cpuid *p );
# if KMP_ARCH_X86
  extern void __kmp_x86_pause( void );
# elif KMP_MIC
  static void __kmp_x86_pause( void ) { _mm_delay_32( 100 ); }
# else
  static void __kmp_x86_pause( void ) { _mm_pause(); }
# endif
# define KMP_CPU_PAUSE() __kmp_x86_pause()
#elif KMP_ARCH_PPC64
# define KMP_PPC64_PRI_LOW() __asm__ volatile ("or 1, 1, 1")
# define KMP_PPC64_PRI_MED() __asm__ volatile ("or 2, 2, 2")
# define KMP_PPC64_PRI_LOC_MB() __asm__ volatile ("" : : : "memory")
# define KMP_CPU_PAUSE() do { KMP_PPC64_PRI_LOW(); KMP_PPC64_PRI_MED(); KMP_PPC64_PRI_LOC_MB(); } while (0)
#else
# define KMP_CPU_PAUSE()        /* nothing to do */
#endif

#define KMP_INIT_YIELD(count)           { (count) = __kmp_yield_init; }

#define KMP_YIELD(cond)                 { KMP_CPU_PAUSE(); __kmp_yield( (cond) ); }

// Note the decrement of 2 in the following Macros.  With KMP_LIBRARY=turnaround,
// there should be no yielding since the starting value from KMP_INIT_YIELD() is odd.

#define KMP_YIELD_WHEN(cond,count)      { KMP_CPU_PAUSE(); (count) -= 2; \
                                                if (!(count)) { KMP_YIELD(cond); (count) = __kmp_yield_next; } }
#define KMP_YIELD_SPIN(count)           { KMP_CPU_PAUSE(); (count) -=2; \
                                                if (!(count)) { KMP_YIELD(1); (count) = __kmp_yield_next; } }

/* ------------------------------------------------------------------------ */
/* Support datatypes for the orphaned construct nesting checks.             */
/* ------------------------------------------------------------------------ */

enum cons_type {
    ct_none,
    ct_parallel,
    ct_pdo,
    ct_pdo_ordered,
    ct_psections,
    ct_psingle,

    /* the following must be left in order and not split up */
    ct_taskq,
    ct_task,                    /* really task inside non-ordered taskq, considered a worksharing type */
    ct_task_ordered,            /* really task inside ordered taskq, considered a worksharing type */
    /* the preceding must be left in order and not split up */

    ct_critical,
    ct_ordered_in_parallel,
    ct_ordered_in_pdo,
    ct_ordered_in_taskq,
    ct_master,
    ct_reduce,
    ct_barrier
};

/* test to see if we are in a taskq construct */
# define IS_CONS_TYPE_TASKQ( ct )       ( ((int)(ct)) >= ((int)ct_taskq) && ((int)(ct)) <= ((int)ct_task_ordered) )
# define IS_CONS_TYPE_ORDERED( ct )     ((ct) == ct_pdo_ordered || (ct) == ct_task_ordered)

struct cons_data {
    ident_t const     *ident;
    enum cons_type     type;
    int                prev;
    kmp_user_lock_p    name;    /* address exclusively for critical section name comparison */
};

struct cons_header {
    int                 p_top, w_top, s_top;
    int                 stack_size, stack_top;
    struct cons_data   *stack_data;
};

struct kmp_region_info {
    char                *text;
    int                 offset[KMP_MAX_FIELDS];
    int                 length[KMP_MAX_FIELDS];
};


/* ---------------------------------------------------------------------- */
/* ---------------------------------------------------------------------- */

#if KMP_OS_WINDOWS
    typedef HANDLE              kmp_thread_t;
    typedef DWORD               kmp_key_t;
#endif /* KMP_OS_WINDOWS */

#if KMP_OS_UNIX
    typedef pthread_t           kmp_thread_t;
    typedef pthread_key_t       kmp_key_t;
#endif

extern kmp_key_t  __kmp_gtid_threadprivate_key;

typedef struct kmp_sys_info {
    long maxrss;          /* the maximum resident set size utilized (in kilobytes)     */
    long minflt;          /* the number of page faults serviced without any I/O        */
    long majflt;          /* the number of page faults serviced that required I/O      */
    long nswap;           /* the number of times a process was "swapped" out of memory */
    long inblock;         /* the number of times the file system had to perform input  */
    long oublock;         /* the number of times the file system had to perform output */
    long nvcsw;           /* the number of times a context switch was voluntarily      */
    long nivcsw;          /* the number of times a context switch was forced           */
} kmp_sys_info_t;

#if KMP_ARCH_X86 || KMP_ARCH_X86_64
typedef struct kmp_cpuinfo {
    int        initialized;  // If 0, other fields are not initialized.
    int        signature;    // CPUID(1).EAX
    int        family;       // CPUID(1).EAX[27:20] + CPUID(1).EAX[11:8] ( Extended Family + Family )
    int        model;        // ( CPUID(1).EAX[19:16] << 4 ) + CPUID(1).EAX[7:4] ( ( Extended Model << 4 ) + Model)
    int        stepping;     // CPUID(1).EAX[3:0] ( Stepping )
    int        sse2;         // 0 if SSE2 instructions are not supported, 1 otherwise.
    int        rtm;          // 0 if RTM instructions are not supported, 1 otherwise.
    int        cpu_stackoffset;
    int        apic_id;
    int        physical_id;
    int        logical_id;
    kmp_uint64 frequency;    // Nominal CPU frequency in Hz.
    char       name [3*sizeof (kmp_cpuid_t)]; // CPUID(0x80000002,0x80000003,0x80000004)
} kmp_cpuinfo_t;
#endif

#ifdef BUILD_TV

struct tv_threadprivate {
    /* Record type #1 */
    void        *global_addr;
    void        *thread_addr;
};

struct tv_data {
    struct tv_data      *next;
    void                *type;
    union tv_union {
        struct tv_threadprivate tp;
    } u;
};

extern kmp_key_t __kmp_tv_key;

#endif /* BUILD_TV */

/* ------------------------------------------------------------------------ */

#if USE_ITT_BUILD
// We cannot include "kmp_itt.h" due to circular dependency. Declare the only required type here.
// Later we will check the type meets requirements.
typedef int kmp_itt_mark_t;
#define KMP_ITT_DEBUG 0
#endif /* USE_ITT_BUILD */

/* ------------------------------------------------------------------------ */

/*
 * Taskq data structures
 */

#define HIGH_WATER_MARK(nslots)         (((nslots) * 3) / 4)
#define __KMP_TASKQ_THUNKS_PER_TH        1      /* num thunks that each thread can simultaneously execute from a task queue */

/*  flags for taskq_global_flags, kmp_task_queue_t tq_flags, kmpc_thunk_t th_flags  */

#define TQF_IS_ORDERED          0x0001  /*  __kmpc_taskq interface, taskq ordered  */
#define TQF_IS_LASTPRIVATE      0x0002  /*  __kmpc_taskq interface, taskq with lastprivate list  */
#define TQF_IS_NOWAIT           0x0004  /*  __kmpc_taskq interface, end taskq nowait  */
#define TQF_HEURISTICS          0x0008  /*  __kmpc_taskq interface, use heuristics to decide task queue size  */
#define TQF_INTERFACE_RESERVED1 0x0010  /*  __kmpc_taskq interface, reserved for future use  */
#define TQF_INTERFACE_RESERVED2 0x0020  /*  __kmpc_taskq interface, reserved for future use  */
#define TQF_INTERFACE_RESERVED3 0x0040  /*  __kmpc_taskq interface, reserved for future use  */
#define TQF_INTERFACE_RESERVED4 0x0080  /*  __kmpc_taskq interface, reserved for future use  */

#define TQF_INTERFACE_FLAGS     0x00ff  /*  all the __kmpc_taskq interface flags  */

#define TQF_IS_LAST_TASK        0x0100  /*  internal/read by instrumentation; only used with TQF_IS_LASTPRIVATE  */
#define TQF_TASKQ_TASK          0x0200  /*  internal use only; this thunk->th_task is the taskq_task  */
#define TQF_RELEASE_WORKERS     0x0400  /*  internal use only; must release worker threads once ANY queued task exists (global) */
#define TQF_ALL_TASKS_QUEUED    0x0800  /*  internal use only; notify workers that master has finished enqueuing tasks */
#define TQF_PARALLEL_CONTEXT    0x1000  /*  internal use only: this queue encountered in a parallel context: not serialized */
#define TQF_DEALLOCATED         0x2000  /*  internal use only; this queue is on the freelist and not in use */

#define TQF_INTERNAL_FLAGS      0x3f00  /*  all the internal use only flags  */

typedef struct KMP_ALIGN_CACHE kmpc_aligned_int32_t {
    kmp_int32                      ai_data;
} kmpc_aligned_int32_t;

typedef struct KMP_ALIGN_CACHE kmpc_aligned_queue_slot_t {
    struct kmpc_thunk_t   *qs_thunk;
} kmpc_aligned_queue_slot_t;

typedef struct kmpc_task_queue_t {
        /* task queue linkage fields for n-ary tree of queues (locked with global taskq_tree_lck) */
    kmp_lock_t                    tq_link_lck;          /*  lock for child link, child next/prev links and child ref counts */
    union {
        struct kmpc_task_queue_t *tq_parent;            /*  pointer to parent taskq, not locked */
        struct kmpc_task_queue_t *tq_next_free;         /*  for taskq internal freelists, locked with global taskq_freelist_lck */
    } tq;
    volatile struct kmpc_task_queue_t *tq_first_child;  /*  pointer to linked-list of children, locked by tq's tq_link_lck */
    struct kmpc_task_queue_t     *tq_next_child;        /*  next child in linked-list, locked by parent tq's tq_link_lck */
    struct kmpc_task_queue_t     *tq_prev_child;        /*  previous child in linked-list, locked by parent tq's tq_link_lck */
    volatile kmp_int32            tq_ref_count;         /*  reference count of threads with access to this task queue */
                                                        /*  (other than the thread executing the kmpc_end_taskq call) */
                                                        /*  locked by parent tq's tq_link_lck */

        /* shared data for task queue */
    struct kmpc_aligned_shared_vars_t    *tq_shareds;   /*  per-thread array of pointers to shared variable structures */
                                                        /*  only one array element exists for all but outermost taskq */

        /* bookkeeping for ordered task queue */
    kmp_uint32                    tq_tasknum_queuing;   /*  ordered task number assigned while queuing tasks */
    volatile kmp_uint32           tq_tasknum_serving;   /*  ordered number of next task to be served (executed) */

        /* thunk storage management for task queue */
    kmp_lock_t                    tq_free_thunks_lck;   /*  lock for thunk freelist manipulation */
    struct kmpc_thunk_t          *tq_free_thunks;       /*  thunk freelist, chained via th.th_next_free  */
    struct kmpc_thunk_t          *tq_thunk_space;       /*  space allocated for thunks for this task queue  */

        /* data fields for queue itself */
    kmp_lock_t                    tq_queue_lck;         /*  lock for [de]enqueue operations: tq_queue, tq_head, tq_tail, tq_nfull */
    kmpc_aligned_queue_slot_t    *tq_queue;             /*  array of queue slots to hold thunks for tasks */
    volatile struct kmpc_thunk_t *tq_taskq_slot;        /*  special slot for taskq task thunk, occupied if not NULL  */
    kmp_int32                     tq_nslots;            /*  # of tq_thunk_space thunks alloc'd (not incl. tq_taskq_slot space)  */
    kmp_int32                     tq_head;              /*  enqueue puts next item in here (index into tq_queue array) */
    kmp_int32                     tq_tail;              /*  dequeue takes next item out of here (index into tq_queue array) */
    volatile kmp_int32            tq_nfull;             /*  # of occupied entries in task queue right now  */
    kmp_int32                     tq_hiwat;             /*  high-water mark for tq_nfull and queue scheduling  */
    volatile kmp_int32            tq_flags;             /*  TQF_xxx  */

        /* bookkeeping for outstanding thunks */
    struct kmpc_aligned_int32_t  *tq_th_thunks;         /*  per-thread array for # of regular thunks currently being executed */
    kmp_int32                     tq_nproc;             /*  number of thunks in the th_thunks array */

        /* statistics library bookkeeping */
    ident_t                       *tq_loc;              /*  source location information for taskq directive */
} kmpc_task_queue_t;

typedef void (*kmpc_task_t) (kmp_int32 global_tid, struct kmpc_thunk_t *thunk);

/*  sizeof_shareds passed as arg to __kmpc_taskq call  */
typedef struct kmpc_shared_vars_t {             /*  aligned during dynamic allocation */
    kmpc_task_queue_t         *sv_queue;
    /*  (pointers to) shared vars  */
} kmpc_shared_vars_t;

typedef struct KMP_ALIGN_CACHE kmpc_aligned_shared_vars_t {
    volatile struct kmpc_shared_vars_t     *ai_data;
} kmpc_aligned_shared_vars_t;

/*  sizeof_thunk passed as arg to kmpc_taskq call  */
typedef struct kmpc_thunk_t {                   /*  aligned during dynamic allocation */
    union {                                     /*  field used for internal freelists too  */
        kmpc_shared_vars_t  *th_shareds;
        struct kmpc_thunk_t *th_next_free;      /*  freelist of individual thunks within queue, head at tq_free_thunks  */
    } th;
    kmpc_task_t th_task;                        /*  taskq_task if flags & TQF_TASKQ_TASK  */
    struct kmpc_thunk_t *th_encl_thunk;         /*  pointer to dynamically enclosing thunk on this thread's call stack */
    kmp_int32 th_flags;                         /*  TQF_xxx (tq_flags interface plus possible internal flags)  */
    kmp_int32 th_status;
    kmp_uint32 th_tasknum;                      /*  task number assigned in order of queuing, used for ordered sections */
    /*  private vars  */
} kmpc_thunk_t;

typedef struct KMP_ALIGN_CACHE kmp_taskq {
    int                 tq_curr_thunk_capacity;

    kmpc_task_queue_t  *tq_root;
    kmp_int32           tq_global_flags;

    kmp_lock_t          tq_freelist_lck;
    kmpc_task_queue_t  *tq_freelist;

    kmpc_thunk_t      **tq_curr_thunk;
} kmp_taskq_t;

/* END Taskq data structures */
/* --------------------------------------------------------------------------- */

typedef kmp_int32 kmp_critical_name[8];

/*!
@ingroup PARALLEL
The type for a microtask which gets passed to @ref __kmpc_fork_call().
The arguments to the outlined function are
@param global_tid the global thread identity of the thread executing the function.
@param bound_tid  the local identitiy of the thread executing the function
@param ... pointers to shared variables accessed by the function.
*/
typedef void (*kmpc_micro)              ( kmp_int32 * global_tid, kmp_int32 * bound_tid, ... );
typedef void (*kmpc_micro_bound)        ( kmp_int32 * bound_tid, kmp_int32 * bound_nth, ... );

/*!
@ingroup THREADPRIVATE
@{
*/
/* --------------------------------------------------------------------------- */
/* Threadprivate initialization/finalization function declarations */

/*  for non-array objects:  __kmpc_threadprivate_register()  */

/*!
 Pointer to the constructor function.
 The first argument is the <tt>this</tt> pointer
*/
typedef void *(*kmpc_ctor)    (void *);

/*!
 Pointer to the destructor function.
 The first argument is the <tt>this</tt> pointer
*/
typedef void (*kmpc_dtor)     (void * /*, size_t */); /* 2nd arg: magic number for KCC unused by Intel compiler */
/*!
 Pointer to an alternate constructor.
 The first argument is the <tt>this</tt> pointer.
*/
typedef void *(*kmpc_cctor)   (void *, void *);

/*  for array objects: __kmpc_threadprivate_register_vec()  */
                                /* First arg: "this" pointer */
                                /* Last arg: number of array elements */
/*!
 Array constructor.
 First argument is the <tt>this</tt> pointer
 Second argument the number of array elements.
*/
typedef void *(*kmpc_ctor_vec)  (void *, size_t);
/*!
 Pointer to the array destructor function.
 The first argument is the <tt>this</tt> pointer
 Second argument the number of array elements.
*/
typedef void (*kmpc_dtor_vec)   (void *, size_t);
/*!
 Array constructor.
 First argument is the <tt>this</tt> pointer
 Third argument the number of array elements.
*/
typedef void *(*kmpc_cctor_vec) (void *, void *, size_t); /* function unused by compiler */

/*!
@}
*/


/* ------------------------------------------------------------------------ */

/* keeps tracked of threadprivate cache allocations for cleanup later */
typedef struct kmp_cached_addr {
    void                      **addr;           /* address of allocated cache */
    struct kmp_cached_addr     *next;           /* pointer to next cached address */
} kmp_cached_addr_t;

struct private_data {
    struct private_data *next;          /* The next descriptor in the list      */
    void                *data;          /* The data buffer for this descriptor  */
    int                  more;          /* The repeat count for this descriptor */
    size_t               size;          /* The data size for this descriptor    */
};

struct private_common {
    struct private_common     *next;
    struct private_common     *link;
    void                      *gbl_addr;
    void                      *par_addr;        /* par_addr == gbl_addr for MASTER thread */
    size_t                     cmn_size;
};

struct shared_common
{
    struct shared_common      *next;
    struct private_data       *pod_init;
    void                      *obj_init;
    void                      *gbl_addr;
    union {
        kmpc_ctor              ctor;
        kmpc_ctor_vec          ctorv;
    } ct;
    union {
        kmpc_cctor             cctor;
        kmpc_cctor_vec         cctorv;
    } cct;
    union {
        kmpc_dtor              dtor;
        kmpc_dtor_vec          dtorv;
    } dt;
    size_t                     vec_len;
    int                        is_vec;
    size_t                     cmn_size;
};

#define KMP_HASH_TABLE_LOG2     9                               /* log2 of the hash table size */
#define KMP_HASH_TABLE_SIZE     (1 << KMP_HASH_TABLE_LOG2)      /* size of the hash table */
#define KMP_HASH_SHIFT          3                               /* throw away this many low bits from the address */
#define KMP_HASH(x)             ((((kmp_uintptr_t) x) >> KMP_HASH_SHIFT) & (KMP_HASH_TABLE_SIZE-1))

struct common_table {
    struct  private_common      *data[ KMP_HASH_TABLE_SIZE ];
};

struct shared_table {
    struct  shared_common       *data[ KMP_HASH_TABLE_SIZE ];
};
/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

#if KMP_STATIC_STEAL_ENABLED
typedef struct KMP_ALIGN_CACHE dispatch_private_info32 {
    kmp_int32 count;
    kmp_int32 ub;
    /* Adding KMP_ALIGN_CACHE here doesn't help / can hurt performance */
    kmp_int32 lb;
    kmp_int32 st;
    kmp_int32 tc;
    kmp_int32 static_steal_counter; /* for static_steal only; maybe better to put after ub */

    // KMP_ALIGN( 16 ) ensures ( if the KMP_ALIGN macro is turned on )
    //    a) parm3 is properly aligned and
    //    b) all parm1-4 are in the same cache line.
    // Because of parm1-4 are used together, performance seems to be better
    // if they are in the same line (not measured though).

    struct KMP_ALIGN( 32 ) { // AC: changed 16 to 32 in order to simplify template
        kmp_int32 parm1;     //     structures in kmp_dispatch.cpp. This should
        kmp_int32 parm2;     //     make no real change at least while padding is off.
        kmp_int32 parm3;
        kmp_int32 parm4;
    };

    kmp_uint32 ordered_lower;
    kmp_uint32 ordered_upper;
#if KMP_OS_WINDOWS
    // This var can be placed in the hole between 'tc' and 'parm1', instead of 'static_steal_counter'.
    // It would be nice to measure execution times.
    // Conditional if/endif can be removed at all.
    kmp_int32 last_upper;
#endif /* KMP_OS_WINDOWS */
} dispatch_private_info32_t;

typedef struct KMP_ALIGN_CACHE dispatch_private_info64 {
    kmp_int64 count;   /* current chunk number for static and static-steal scheduling*/
    kmp_int64 ub;      /* upper-bound */
    /* Adding KMP_ALIGN_CACHE here doesn't help / can hurt performance */
    kmp_int64 lb;      /* lower-bound */
    kmp_int64 st;      /* stride */
    kmp_int64 tc;      /* trip count (number of iterations) */
    kmp_int64 static_steal_counter; /* for static_steal only; maybe better to put after ub */

    /* parm[1-4] are used in different ways by different scheduling algorithms */

    // KMP_ALIGN( 32 ) ensures ( if the KMP_ALIGN macro is turned on )
    //    a) parm3 is properly aligned and
    //    b) all parm1-4 are in the same cache line.
    // Because of parm1-4 are used together, performance seems to be better
    // if they are in the same line (not measured though).

    struct KMP_ALIGN( 32 ) {
        kmp_int64 parm1;
        kmp_int64 parm2;
        kmp_int64 parm3;
        kmp_int64 parm4;
    };

    kmp_uint64 ordered_lower;
    kmp_uint64 ordered_upper;
#if KMP_OS_WINDOWS
    // This var can be placed in the hole between 'tc' and 'parm1', instead of 'static_steal_counter'.
    // It would be nice to measure execution times.
    // Conditional if/endif can be removed at all.
    kmp_int64 last_upper;
#endif /* KMP_OS_WINDOWS */
} dispatch_private_info64_t;
#else /* KMP_STATIC_STEAL_ENABLED */
typedef struct KMP_ALIGN_CACHE dispatch_private_info32 {
    kmp_int32 lb;
    kmp_int32 ub;
    kmp_int32 st;
    kmp_int32 tc;

    kmp_int32 parm1;
    kmp_int32 parm2;
    kmp_int32 parm3;
    kmp_int32 parm4;

    kmp_int32 count;

    kmp_uint32 ordered_lower;
    kmp_uint32 ordered_upper;
#if KMP_OS_WINDOWS
    kmp_int32 last_upper;
#endif /* KMP_OS_WINDOWS */
} dispatch_private_info32_t;

typedef struct KMP_ALIGN_CACHE dispatch_private_info64 {
    kmp_int64 lb;      /* lower-bound */
    kmp_int64 ub;      /* upper-bound */
    kmp_int64 st;      /* stride */
    kmp_int64 tc;      /* trip count (number of iterations) */

    /* parm[1-4] are used in different ways by different scheduling algorithms */
    kmp_int64 parm1;
    kmp_int64 parm2;
    kmp_int64 parm3;
    kmp_int64 parm4;

    kmp_int64 count;   /* current chunk number for static scheduling */

    kmp_uint64 ordered_lower;
    kmp_uint64 ordered_upper;
#if KMP_OS_WINDOWS
    kmp_int64 last_upper;
#endif /* KMP_OS_WINDOWS */
} dispatch_private_info64_t;
#endif /* KMP_STATIC_STEAL_ENABLED */

typedef struct KMP_ALIGN_CACHE dispatch_private_info {
    union private_info {
        dispatch_private_info32_t  p32;
        dispatch_private_info64_t  p64;
    } u;
    enum sched_type schedule;  /* scheduling algorithm */
    kmp_int32       ordered;   /* ordered clause specified */
    kmp_int32       ordered_bumped;
    kmp_int32   ordered_dummy[KMP_MAX_ORDERED-3]; // to retain the structure size after making ordered_iteration scalar
    struct dispatch_private_info * next; /* stack of buffers for nest of serial regions */
    kmp_int32       nomerge;   /* don't merge iters if serialized */
    kmp_int32       type_size; /* the size of types in private_info */
    enum cons_type  pushed_ws;
} dispatch_private_info_t;

typedef struct dispatch_shared_info32 {
    /* chunk index under dynamic, number of idle threads under static-steal;
       iteration index otherwise */
    volatile kmp_uint32      iteration;
    volatile kmp_uint32      num_done;
    volatile kmp_uint32      ordered_iteration;
    kmp_int32   ordered_dummy[KMP_MAX_ORDERED-1]; // to retain the structure size after making ordered_iteration scalar
} dispatch_shared_info32_t;

typedef struct dispatch_shared_info64 {
    /* chunk index under dynamic, number of idle threads under static-steal;
       iteration index otherwise */
    volatile kmp_uint64      iteration;
    volatile kmp_uint64      num_done;
    volatile kmp_uint64      ordered_iteration;
    kmp_int64   ordered_dummy[KMP_MAX_ORDERED-3]; // to retain the structure size after making ordered_iteration scalar
} dispatch_shared_info64_t;

typedef struct dispatch_shared_info {
    union shared_info {
        dispatch_shared_info32_t  s32;
        dispatch_shared_info64_t  s64;
    } u;
    volatile kmp_uint32     buffer_index;
#if OMP_45_ENABLED
    volatile kmp_int32      doacross_buf_idx;  // teamwise index
    volatile kmp_uint32    *doacross_flags;    // shared array of iteration flags (0/1)
    kmp_int32               doacross_num_done; // count finished threads
#endif
#if KMP_USE_HWLOC
    // When linking with libhwloc, the ORDERED EPCC test slows down on big
    // machines (> 48 cores). Performance analysis showed that a cache thrash
    // was occurring and this padding helps alleviate the problem.
    char padding[64];
#endif
} dispatch_shared_info_t;

typedef struct kmp_disp {
    /* Vector for ORDERED SECTION */
    void (*th_deo_fcn)( int * gtid, int * cid, ident_t *);
    /* Vector for END ORDERED SECTION */
    void (*th_dxo_fcn)( int * gtid, int * cid, ident_t *);

    dispatch_shared_info_t  *th_dispatch_sh_current;
    dispatch_private_info_t *th_dispatch_pr_current;

    dispatch_private_info_t *th_disp_buffer;
    kmp_int32                th_disp_index;
#if OMP_45_ENABLED
    kmp_int32                th_doacross_buf_idx; // thread's doacross buffer index
    volatile kmp_uint32     *th_doacross_flags;   // pointer to shared array of flags
    union { // we can use union here because doacross cannot be used in nonmonotonic loops
        kmp_int64           *th_doacross_info;    // info on loop bounds
        kmp_lock_t          *th_steal_lock;       // lock used for chunk stealing (8-byte variable)
    };
#else
#if KMP_STATIC_STEAL_ENABLED
    kmp_lock_t              *th_steal_lock;       // lock used for chunk stealing (8-byte variable)
    void* dummy_padding[1]; // make it 64 bytes on Intel(R) 64
#else
    void* dummy_padding[2]; // make it 64 bytes on Intel(R) 64
#endif
#endif
#if KMP_USE_INTERNODE_ALIGNMENT
    char more_padding[INTERNODE_CACHE_LINE];
#endif
} kmp_disp_t;

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

/* Barrier stuff */

/* constants for barrier state update */
#define KMP_INIT_BARRIER_STATE  0       /* should probably start from zero */
#define KMP_BARRIER_SLEEP_BIT   0       /* bit used for suspend/sleep part of state */
#define KMP_BARRIER_UNUSED_BIT  1       /* bit that must never be set for valid state */
#define KMP_BARRIER_BUMP_BIT    2       /* lsb used for bump of go/arrived state */

#define KMP_BARRIER_SLEEP_STATE         (1 << KMP_BARRIER_SLEEP_BIT)
#define KMP_BARRIER_UNUSED_STATE        (1 << KMP_BARRIER_UNUSED_BIT)
#define KMP_BARRIER_STATE_BUMP          (1 << KMP_BARRIER_BUMP_BIT)

#if (KMP_BARRIER_SLEEP_BIT >= KMP_BARRIER_BUMP_BIT)
# error "Barrier sleep bit must be smaller than barrier bump bit"
#endif
#if (KMP_BARRIER_UNUSED_BIT >= KMP_BARRIER_BUMP_BIT)
# error "Barrier unused bit must be smaller than barrier bump bit"
#endif

// Constants for release barrier wait state: currently, hierarchical only
#define KMP_BARRIER_NOT_WAITING        0  // Normal state; worker not in wait_sleep
#define KMP_BARRIER_OWN_FLAG           1  // Normal state; worker waiting on own b_go flag in release
#define KMP_BARRIER_PARENT_FLAG        2  // Special state; worker waiting on parent's b_go flag in release
#define KMP_BARRIER_SWITCH_TO_OWN_FLAG 3  // Special state; tells worker to shift from parent to own b_go
#define KMP_BARRIER_SWITCHING          4  // Special state; worker resets appropriate flag on wake-up

enum barrier_type {
    bs_plain_barrier = 0,       /* 0, All non-fork/join barriers (except reduction barriers if enabled) */
    bs_forkjoin_barrier,        /* 1, All fork/join (parallel region) barriers */
    #if KMP_FAST_REDUCTION_BARRIER
        bs_reduction_barrier,   /* 2, All barriers that are used in reduction */
    #endif // KMP_FAST_REDUCTION_BARRIER
    bs_last_barrier             /* Just a placeholder to mark the end */
};

// to work with reduction barriers just like with plain barriers
#if !KMP_FAST_REDUCTION_BARRIER
    #define bs_reduction_barrier bs_plain_barrier
#endif // KMP_FAST_REDUCTION_BARRIER

typedef enum kmp_bar_pat {      /* Barrier communication patterns */
    bp_linear_bar = 0,          /* Single level (degenerate) tree */
    bp_tree_bar = 1,            /* Balanced tree with branching factor 2^n */
    bp_hyper_bar = 2,           /* Hypercube-embedded tree with min branching factor 2^n */
    bp_hierarchical_bar = 3,    /* Machine hierarchy tree */
    bp_last_bar = 4             /* Placeholder to mark the end */
} kmp_bar_pat_e;

# define KMP_BARRIER_ICV_PUSH   1

/* Record for holding the values of the internal controls stack records */
typedef struct kmp_internal_control {
    int           serial_nesting_level;  /* corresponds to the value of the th_team_serialized field */
    kmp_int8      nested;                /* internal control for nested parallelism (per thread) */
    kmp_int8      dynamic;               /* internal control for dynamic adjustment of threads (per thread) */
    kmp_int8      bt_set;                /* internal control for whether blocktime is explicitly set */
    int           blocktime;             /* internal control for blocktime */
#if KMP_USE_MONITOR
    int           bt_intervals;          /* internal control for blocktime intervals */
#endif
    int           nproc;                 /* internal control for #threads for next parallel region (per thread) */
    int           max_active_levels;     /* internal control for max_active_levels */
    kmp_r_sched_t sched;                 /* internal control for runtime schedule {sched,chunk} pair */
#if OMP_40_ENABLED
    kmp_proc_bind_t proc_bind;           /* internal control for affinity  */
    kmp_int32       default_device;      /* internal control for default device */
#endif // OMP_40_ENABLED
    struct kmp_internal_control *next;
} kmp_internal_control_t;

static inline void
copy_icvs( kmp_internal_control_t *dst, kmp_internal_control_t *src ) {
    *dst = *src;
}

/* Thread barrier needs volatile barrier fields */
typedef struct KMP_ALIGN_CACHE kmp_bstate {
    // th_fixed_icvs is aligned by virtue of kmp_bstate being aligned (and all uses of it).
    // It is not explicitly aligned below, because we *don't* want it to be padded -- instead,
    // we fit b_go into the same cache line with th_fixed_icvs, enabling NGO cache lines
    // stores in the hierarchical barrier.
    kmp_internal_control_t th_fixed_icvs;          // Initial ICVs for the thread
    // Tuck b_go into end of th_fixed_icvs cache line, so it can be stored with same NGO store
    volatile kmp_uint64 b_go;                      // STATE => task should proceed (hierarchical)
    KMP_ALIGN_CACHE volatile kmp_uint64 b_arrived; // STATE => task reached synch point.
    kmp_uint32 *skip_per_level;
    kmp_uint32 my_level;
    kmp_int32 parent_tid;
    kmp_int32 old_tid;
    kmp_uint32 depth;
    struct kmp_bstate *parent_bar;
    kmp_team_t *team;
    kmp_uint64 leaf_state;
    kmp_uint32 nproc;
    kmp_uint8 base_leaf_kids;
    kmp_uint8 leaf_kids;
    kmp_uint8 offset;
    kmp_uint8 wait_flag;
    kmp_uint8 use_oncore_barrier;
#if USE_DEBUGGER
    // The following field is intended for the debugger solely. Only the worker thread itself accesses this
    // field: the worker increases it by 1 when it arrives to a barrier.
    KMP_ALIGN_CACHE kmp_uint b_worker_arrived;
#endif /* USE_DEBUGGER */
} kmp_bstate_t;

union KMP_ALIGN_CACHE kmp_barrier_union {
    double       b_align;        /* use worst case alignment */
    char         b_pad[ KMP_PAD(kmp_bstate_t, CACHE_LINE) ];
    kmp_bstate_t bb;
};

typedef union kmp_barrier_union kmp_balign_t;

/* Team barrier needs only non-volatile arrived counter */
union KMP_ALIGN_CACHE kmp_barrier_team_union {
    double       b_align;        /* use worst case alignment */
    char         b_pad[ CACHE_LINE ];
    struct {
        kmp_uint64   b_arrived;       /* STATE => task reached synch point. */
#if USE_DEBUGGER
        // The following two fields are indended for the debugger solely. Only master of the team accesses
        // these fields: the first one is increased by 1 when master arrives to a barrier, the
        // second one is increased by one when all the threads arrived.
        kmp_uint     b_master_arrived;
        kmp_uint     b_team_arrived;
#endif
    };
};

typedef union kmp_barrier_team_union kmp_balign_team_t;

/*
 * Padding for Linux* OS pthreads condition variables and mutexes used to signal
 * threads when a condition changes.  This is to workaround an NPTL bug
 * where padding was added to pthread_cond_t which caused the initialization
 * routine to write outside of the structure if compiled on pre-NPTL threads.
 */

#if KMP_OS_WINDOWS
typedef struct kmp_win32_mutex
{
    /* The Lock */
    CRITICAL_SECTION cs;
} kmp_win32_mutex_t;

typedef struct kmp_win32_cond
{
    /* Count of the number of waiters. */
    int waiters_count_;

    /* Serialize access to <waiters_count_> */
    kmp_win32_mutex_t waiters_count_lock_;

    /* Number of threads to release via a <cond_broadcast> or a */
    /* <cond_signal> */
    int release_count_;

    /* Keeps track of the current "generation" so that we don't allow */
    /* one thread to steal all the "releases" from the broadcast. */
    int wait_generation_count_;

    /* A manual-reset event that's used to block and release waiting */
    /* threads. */
    HANDLE event_;
} kmp_win32_cond_t;
#endif

#if KMP_OS_UNIX

union KMP_ALIGN_CACHE kmp_cond_union {
    double              c_align;
    char                c_pad[ CACHE_LINE ];
    pthread_cond_t      c_cond;
};

typedef union kmp_cond_union kmp_cond_align_t;

union KMP_ALIGN_CACHE kmp_mutex_union {
    double              m_align;
    char                m_pad[ CACHE_LINE ];
    pthread_mutex_t     m_mutex;
};

typedef union kmp_mutex_union kmp_mutex_align_t;

#endif /* KMP_OS_UNIX */

typedef struct kmp_desc_base {
    void    *ds_stackbase;
    size_t            ds_stacksize;
    int               ds_stackgrow;
    kmp_thread_t      ds_thread;
    volatile int      ds_tid;
    int               ds_gtid;
#if KMP_OS_WINDOWS
    volatile int      ds_alive;
    DWORD             ds_thread_id;
        /*
            ds_thread keeps thread handle on Windows* OS. It is enough for RTL purposes. However,
            debugger support (libomp_db) cannot work with handles, because they uncomparable. For
            example, debugger requests info about thread with handle h. h is valid within debugger
            process, and meaningless within debugee process. Even if h is duped by call to
            DuplicateHandle(), so the result h' is valid within debugee process, but it is a *new*
            handle which does *not* equal to any other handle in debugee... The only way to
            compare handles is convert them to system-wide ids. GetThreadId() function is
            available only in Longhorn and Server 2003. :-( In contrast, GetCurrentThreadId() is
            available on all Windows* OS flavours (including Windows* 95). Thus, we have to get thread id by
            call to GetCurrentThreadId() from within the thread and save it to let libomp_db
            identify threads.
        */
#endif /* KMP_OS_WINDOWS */
} kmp_desc_base_t;

typedef union KMP_ALIGN_CACHE kmp_desc {
    double           ds_align;        /* use worst case alignment */
    char             ds_pad[ KMP_PAD(kmp_desc_base_t, CACHE_LINE) ];
    kmp_desc_base_t  ds;
} kmp_desc_t;


typedef struct kmp_local {
    volatile int           this_construct; /* count of single's encountered by thread */
    void                  *reduce_data;
#if KMP_USE_BGET
    void                  *bget_data;
    void                  *bget_list;
#if ! USE_CMP_XCHG_FOR_BGET
#ifdef USE_QUEUING_LOCK_FOR_BGET
    kmp_lock_t             bget_lock;      /* Lock for accessing bget free list */
#else
    kmp_bootstrap_lock_t   bget_lock;      /* Lock for accessing bget free list */
                                           /* Must be bootstrap lock so we can use it at library shutdown */
#endif /* USE_LOCK_FOR_BGET */
#endif /* ! USE_CMP_XCHG_FOR_BGET */
#endif /* KMP_USE_BGET */

#ifdef BUILD_TV
    struct tv_data        *tv_data;
#endif

    PACKED_REDUCTION_METHOD_T packed_reduction_method; /* stored by __kmpc_reduce*(), used by __kmpc_end_reduce*() */

} kmp_local_t;

#define KMP_CHECK_UPDATE(a, b) if ((a) != (b)) (a) = (b)
#define KMP_CHECK_UPDATE_SYNC(a, b) if ((a) != (b)) TCW_SYNC_PTR((a), (b))

#define get__blocktime( xteam, xtid )     ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.blocktime)
#define get__bt_set( xteam, xtid )        ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_set)
#if KMP_USE_MONITOR
#define get__bt_intervals( xteam, xtid )  ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_intervals)
#endif

#define get__nested_2(xteam,xtid)         ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.nested)
#define get__dynamic_2(xteam,xtid)        ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.dynamic)
#define get__nproc_2(xteam,xtid)          ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.nproc)
#define get__sched_2(xteam,xtid)          ((xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.sched)

#define set__blocktime_team( xteam, xtid, xval ) \
        ( ( (xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.blocktime )    = (xval) )

#if KMP_USE_MONITOR
#define set__bt_intervals_team( xteam, xtid, xval ) \
        ( ( (xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_intervals ) = (xval) )
#endif

#define set__bt_set_team( xteam, xtid, xval ) \
        ( ( (xteam)->t.t_threads[(xtid)]->th.th_current_task->td_icvs.bt_set )       = (xval) )


#define set__nested( xthread, xval )                            \
        ( ( (xthread)->th.th_current_task->td_icvs.nested ) = (xval) )
#define get__nested( xthread ) \
        ( ( (xthread)->th.th_current_task->td_icvs.nested ) ? (FTN_TRUE) : (FTN_FALSE) )

#define set__dynamic( xthread, xval )                            \
        ( ( (xthread)->th.th_current_task->td_icvs.dynamic ) = (xval) )
#define get__dynamic( xthread ) \
        ( ( (xthread)->th.th_current_task->td_icvs.dynamic ) ? (FTN_TRUE) : (FTN_FALSE) )

#define set__nproc( xthread, xval )                            \
        ( ( (xthread)->th.th_current_task->td_icvs.nproc ) = (xval) )

#define set__max_active_levels( xthread, xval )                            \
        ( ( (xthread)->th.th_current_task->td_icvs.max_active_levels ) = (xval) )

#define set__sched( xthread, xval )                            \
        ( ( (xthread)->th.th_current_task->td_icvs.sched ) = (xval) )

#if OMP_40_ENABLED

#define set__proc_bind( xthread, xval )                          \
        ( ( (xthread)->th.th_current_task->td_icvs.proc_bind ) = (xval) )
#define get__proc_bind( xthread ) \
        ( (xthread)->th.th_current_task->td_icvs.proc_bind )

#endif /* OMP_40_ENABLED */


/* ------------------------------------------------------------------------ */
// OpenMP tasking data structures
//

typedef enum kmp_tasking_mode {
    tskm_immediate_exec = 0,
    tskm_extra_barrier = 1,
    tskm_task_teams = 2,
    tskm_max = 2
} kmp_tasking_mode_t;

extern kmp_tasking_mode_t __kmp_tasking_mode;         /* determines how/when to execute tasks */
extern kmp_int32 __kmp_task_stealing_constraint;
#if OMP_40_ENABLED
    extern kmp_int32 __kmp_default_device; // Set via OMP_DEFAULT_DEVICE if specified, defaults to 0 otherwise
#endif
#if OMP_45_ENABLED
    extern kmp_int32 __kmp_max_task_priority; // Set via OMP_MAX_TASK_PRIORITY if specified, defaults to 0 otherwise
#endif

/* NOTE: kmp_taskdata_t and kmp_task_t structures allocated in single block with taskdata first */
#define KMP_TASK_TO_TASKDATA(task)     (((kmp_taskdata_t *) task) - 1)
#define KMP_TASKDATA_TO_TASK(taskdata) (kmp_task_t *) (taskdata + 1)

// The tt_found_tasks flag is a signal to all threads in the team that tasks were spawned and
// queued since the previous barrier release.
#define KMP_TASKING_ENABLED(task_team) \
    (TCR_SYNC_4((task_team)->tt.tt_found_tasks) == TRUE)
/*!
@ingroup BASIC_TYPES
@{
*/

/*!
 */
typedef kmp_int32 (* kmp_routine_entry_t)( kmp_int32, void * );

#if OMP_40_ENABLED || OMP_45_ENABLED
typedef union kmp_cmplrdata {
#if OMP_45_ENABLED
    kmp_int32           priority;           /**< priority specified by user for the task */
#endif // OMP_45_ENABLED
#if OMP_40_ENABLED
    kmp_routine_entry_t destructors;        /* pointer to function to invoke deconstructors of firstprivate C++ objects */
#endif // OMP_40_ENABLED
    /* future data */
} kmp_cmplrdata_t;
#endif

/*  sizeof_kmp_task_t passed as arg to kmpc_omp_task call  */
/*!
 */
typedef struct kmp_task {                   /* GEH: Shouldn't this be aligned somehow? */
    void *              shareds;            /**< pointer to block of pointers to shared vars   */
    kmp_routine_entry_t routine;            /**< pointer to routine to call for executing task */
    kmp_int32           part_id;            /**< part id for the task                          */
#if OMP_40_ENABLED || OMP_45_ENABLED
    kmp_cmplrdata_t data1;                  /* Two known optional additions: destructors and priority */
    kmp_cmplrdata_t data2;                  /* Process destructors first, priority second */
    /* future data */
#endif
    /*  private vars  */
} kmp_task_t;

/*!
@}
*/

#if OMP_40_ENABLED
typedef struct kmp_taskgroup {
    kmp_uint32            count;   // number of allocated and not yet complete tasks
    kmp_int32             cancel_request; // request for cancellation of this taskgroup
    struct kmp_taskgroup *parent;  // parent taskgroup
} kmp_taskgroup_t;


// forward declarations
typedef union kmp_depnode       kmp_depnode_t;
typedef struct kmp_depnode_list  kmp_depnode_list_t;
typedef struct kmp_dephash_entry kmp_dephash_entry_t;

typedef struct kmp_depend_info {
     kmp_intptr_t               base_addr;
     size_t                     len;
     struct {
         bool                   in:1;
         bool                   out:1;
     } flags;
} kmp_depend_info_t;

struct kmp_depnode_list {
   kmp_depnode_t *              node;
   kmp_depnode_list_t *         next;
};

typedef struct kmp_base_depnode {
    kmp_depnode_list_t        * successors;
    kmp_task_t                * task;

    kmp_lock_t                  lock;

#if KMP_SUPPORT_GRAPH_OUTPUT
    kmp_uint32                  id;
#endif

    volatile kmp_int32          npredecessors;
    volatile kmp_int32          nrefs;
} kmp_base_depnode_t;

union KMP_ALIGN_CACHE kmp_depnode {
    double          dn_align;        /* use worst case alignment */
    char            dn_pad[ KMP_PAD(kmp_base_depnode_t, CACHE_LINE) ];
    kmp_base_depnode_t dn;
};

struct kmp_dephash_entry {
    kmp_intptr_t               addr;
    kmp_depnode_t            * last_out;
    kmp_depnode_list_t       * last_ins;
    kmp_dephash_entry_t      * next_in_bucket;
};

typedef struct kmp_dephash {
   kmp_dephash_entry_t     ** buckets;
   size_t		      size;
#ifdef KMP_DEBUG
   kmp_uint32                 nelements;
   kmp_uint32                 nconflicts;
#endif
} kmp_dephash_t;

#endif

#ifdef BUILD_TIED_TASK_STACK

/* Tied Task stack definitions */
typedef struct kmp_stack_block {
    kmp_taskdata_t *          sb_block[ TASK_STACK_BLOCK_SIZE ];
    struct kmp_stack_block *  sb_next;
    struct kmp_stack_block *  sb_prev;
} kmp_stack_block_t;

typedef struct kmp_task_stack {
    kmp_stack_block_t         ts_first_block;  // first block of stack entries
    kmp_taskdata_t **         ts_top;          // pointer to the top of stack
    kmp_int32                 ts_entries;      // number of entries on the stack
} kmp_task_stack_t;

#endif // BUILD_TIED_TASK_STACK

typedef struct kmp_tasking_flags {          /* Total struct must be exactly 32 bits */
    /* Compiler flags */                    /* Total compiler flags must be 16 bits */
    unsigned tiedness    : 1;               /* task is either tied (1) or untied (0) */
    unsigned final       : 1;               /* task is final(1) so execute immediately */
    unsigned merged_if0  : 1;               /* no __kmpc_task_{begin/complete}_if0 calls in if0 code path */
#if OMP_40_ENABLED
    unsigned destructors_thunk : 1;         /* set if the compiler creates a thunk to invoke destructors from the runtime */
#if OMP_45_ENABLED
    unsigned proxy       : 1;               /* task is a proxy task (it will be executed outside the context of the RTL) */
    unsigned priority_specified :1;         /* set if the compiler provides priority setting for the task */
    unsigned reserved    : 10;              /* reserved for compiler use */
#else
    unsigned reserved    : 12;              /* reserved for compiler use */
#endif
#else // OMP_40_ENABLED
    unsigned reserved    : 13;              /* reserved for compiler use */
#endif // OMP_40_ENABLED

    /* Library flags */                     /* Total library flags must be 16 bits */
    unsigned tasktype    : 1;               /* task is either explicit(1) or implicit (0) */
    unsigned task_serial : 1;               /* this task is executed immediately (1) or deferred (0) */
    unsigned tasking_ser : 1;               /* all tasks in team are either executed immediately (1) or may be deferred (0) */
    unsigned team_serial : 1;               /* entire team is serial (1) [1 thread] or parallel (0) [>= 2 threads] */
                                            /* If either team_serial or tasking_ser is set, task team may be NULL */
    /* Task State Flags: */
    unsigned started     : 1;               /* 1==started, 0==not started     */
    unsigned executing   : 1;               /* 1==executing, 0==not executing */
    unsigned complete    : 1;               /* 1==complete, 0==not complete   */
    unsigned freed       : 1;               /* 1==freed, 0==allocateed        */
    unsigned native      : 1;               /* 1==gcc-compiled task, 0==intel */
    unsigned reserved31  : 7;               /* reserved for library use */

} kmp_tasking_flags_t;


struct kmp_taskdata {                                 /* aligned during dynamic allocation       */
    kmp_int32               td_task_id;               /* id, assigned by debugger                */
    kmp_tasking_flags_t     td_flags;                 /* task flags                              */
    kmp_team_t *            td_team;                  /* team for this task                      */
    kmp_info_p *            td_alloc_thread;          /* thread that allocated data structures   */
                                                      /* Currently not used except for perhaps IDB */
    kmp_taskdata_t *        td_parent;                /* parent task                             */
    kmp_int32               td_level;                 /* task nesting level                      */
    kmp_int32               td_untied_count;          /* untied task active parts counter        */
    ident_t *               td_ident;                 /* task identifier                         */
                            // Taskwait data.
    ident_t *               td_taskwait_ident;
    kmp_uint32              td_taskwait_counter;
    kmp_int32               td_taskwait_thread;       /* gtid + 1 of thread encountered taskwait */
    KMP_ALIGN_CACHE kmp_internal_control_t  td_icvs;  /* Internal control variables for the task */
    KMP_ALIGN_CACHE volatile kmp_uint32 td_allocated_child_tasks;  /* Child tasks (+ current task) not yet deallocated */
    volatile kmp_uint32     td_incomplete_child_tasks; /* Child tasks not yet complete */
#if OMP_40_ENABLED
    kmp_taskgroup_t *       td_taskgroup;         // Each task keeps pointer to its current taskgroup
    kmp_dephash_t *         td_dephash;           // Dependencies for children tasks are tracked from here
    kmp_depnode_t *         td_depnode;           // Pointer to graph node if this task has dependencies
#endif
#if OMPT_SUPPORT
    ompt_task_info_t        ompt_task_info;
#endif
#if OMP_45_ENABLED
    kmp_task_team_t *       td_task_team;
    kmp_int32               td_size_alloc;        // The size of task structure, including shareds etc.
#endif
}; // struct kmp_taskdata

// Make sure padding above worked
KMP_BUILD_ASSERT( sizeof(kmp_taskdata_t) % sizeof(void *) == 0 );

// Data for task team but per thread
typedef struct kmp_base_thread_data {
    kmp_info_p *            td_thr;                // Pointer back to thread info
                                                   // Used only in __kmp_execute_tasks_template, maybe not avail until task is queued?
    kmp_bootstrap_lock_t    td_deque_lock;         // Lock for accessing deque
    kmp_taskdata_t **       td_deque;              // Deque of tasks encountered by td_thr, dynamically allocated
    kmp_int32               td_deque_size;         // Size of deck
    kmp_uint32              td_deque_head;         // Head of deque (will wrap)
    kmp_uint32              td_deque_tail;         // Tail of deque (will wrap)
    kmp_int32               td_deque_ntasks;       // Number of tasks in deque
                                                   // GEH: shouldn't this be volatile since used in while-spin?
    kmp_int32               td_deque_last_stolen;  // Thread number of last successful steal
#ifdef BUILD_TIED_TASK_STACK
    kmp_task_stack_t        td_susp_tied_tasks;    // Stack of suspended tied tasks for task scheduling constraint
#endif // BUILD_TIED_TASK_STACK
} kmp_base_thread_data_t;

#define TASK_DEQUE_BITS          8  // Used solely to define INITIAL_TASK_DEQUE_SIZE
#define INITIAL_TASK_DEQUE_SIZE  ( 1 << TASK_DEQUE_BITS )

#define TASK_DEQUE_SIZE(td)     ((td).td_deque_size)
#define TASK_DEQUE_MASK(td)     ((td).td_deque_size - 1)

typedef union KMP_ALIGN_CACHE kmp_thread_data {
    kmp_base_thread_data_t  td;
    double                  td_align;       /* use worst case alignment */
    char                    td_pad[ KMP_PAD(kmp_base_thread_data_t, CACHE_LINE) ];
} kmp_thread_data_t;


// Data for task teams which are used when tasking is enabled for the team
typedef struct kmp_base_task_team {
    kmp_bootstrap_lock_t    tt_threads_lock;       /* Lock used to allocate per-thread part of task team */
                                                   /* must be bootstrap lock since used at library shutdown*/
    kmp_task_team_t *       tt_next;               /* For linking the task team free list */
    kmp_thread_data_t *     tt_threads_data;       /* Array of per-thread structures for task team */
                                                   /* Data survives task team deallocation */
    kmp_int32               tt_found_tasks;        /* Have we found tasks and queued them while executing this team? */
                                                   /* TRUE means tt_threads_data is set up and initialized */
    kmp_int32               tt_nproc;              /* #threads in team           */
    kmp_int32               tt_max_threads;        /* number of entries allocated for threads_data array */
#if OMP_45_ENABLED
    kmp_int32               tt_found_proxy_tasks;  /* Have we found proxy tasks since last barrier */
#endif

    KMP_ALIGN_CACHE
    volatile kmp_uint32     tt_unfinished_threads; /* #threads still active      */

    KMP_ALIGN_CACHE
    volatile kmp_uint32     tt_active;             /* is the team still actively executing tasks */
} kmp_base_task_team_t;

union KMP_ALIGN_CACHE kmp_task_team {
    kmp_base_task_team_t tt;
    double               tt_align;       /* use worst case alignment */
    char                 tt_pad[ KMP_PAD(kmp_base_task_team_t, CACHE_LINE) ];
};

#if ( USE_FAST_MEMORY == 3 ) || ( USE_FAST_MEMORY == 5 )
// Free lists keep same-size free memory slots for fast memory allocation routines
typedef struct kmp_free_list {
    void             *th_free_list_self;   // Self-allocated tasks free list
    void             *th_free_list_sync;   // Self-allocated tasks stolen/returned by other threads
    void             *th_free_list_other;  // Non-self free list (to be returned to owner's sync list)
} kmp_free_list_t;
#endif
#if KMP_NESTED_HOT_TEAMS
// Hot teams array keeps hot teams and their sizes for given thread.
// Hot teams are not put in teams pool, and they don't put threads in threads pool.
typedef struct kmp_hot_team_ptr {
    kmp_team_p *hot_team;      // pointer to hot_team of given nesting level
    kmp_int32   hot_team_nth;  // number of threads allocated for the hot_team
} kmp_hot_team_ptr_t;
#endif
#if OMP_40_ENABLED
typedef struct kmp_teams_size {
    kmp_int32   nteams;        // number of teams in a league
    kmp_int32   nth;           // number of threads in each team of the league
} kmp_teams_size_t;
#endif

/* ------------------------------------------------------------------------ */
// OpenMP thread data structures
//

typedef struct KMP_ALIGN_CACHE kmp_base_info {
/*
 * Start with the readonly data which is cache aligned and padded.
 * this is written before the thread starts working by the master.
 * (uber masters may update themselves later)
 * (usage does not consider serialized regions)
 */
    kmp_desc_t        th_info;
    kmp_team_p       *th_team;       /* team we belong to */
    kmp_root_p       *th_root;       /* pointer to root of task hierarchy */
    kmp_info_p       *th_next_pool;  /* next available thread in the pool */
    kmp_disp_t       *th_dispatch;   /* thread's dispatch data */
    int               th_in_pool;    /* in thread pool (32 bits for TCR/TCW) */

    /* The following are cached from the team info structure */
    /* TODO use these in more places as determined to be needed via profiling */
    int               th_team_nproc;      /* number of threads in a team */
    kmp_info_p       *th_team_master;     /* the team's master thread */
    int               th_team_serialized; /* team is serialized */
#if OMP_40_ENABLED
    microtask_t       th_teams_microtask; /* save entry address for teams construct */
    int               th_teams_level;     /* save initial level of teams construct */
                                          /* it is 0 on device but may be any on host */
#endif

    /* The blocktime info is copied from the team struct to the thread sruct */
    /* at the start of a barrier, and the values stored in the team are used */
    /* at points in the code where the team struct is no longer guaranteed   */
    /* to exist (from the POV of worker threads).                            */
#if KMP_USE_MONITOR
    int               th_team_bt_intervals;
#endif
    int               th_team_bt_set;


#if KMP_AFFINITY_SUPPORTED
    kmp_affin_mask_t  *th_affin_mask; /* thread's current affinity mask */
#endif

/*
 * The data set by the master at reinit, then R/W by the worker
 */
    KMP_ALIGN_CACHE int     th_set_nproc;  /* if > 0, then only use this request for the next fork */
#if KMP_NESTED_HOT_TEAMS
    kmp_hot_team_ptr_t     *th_hot_teams;     /* array of hot teams */
#endif
#if OMP_40_ENABLED
    kmp_proc_bind_t         th_set_proc_bind; /* if != proc_bind_default, use request for next fork */
    kmp_teams_size_t        th_teams_size;    /* number of teams/threads in teams construct */
# if KMP_AFFINITY_SUPPORTED
    int                     th_current_place; /* place currently bound to */
    int                     th_new_place;     /* place to bind to in par reg */
    int                     th_first_place;   /* first place in partition */
    int                     th_last_place;    /* last place in partition */
# endif
#endif
#if USE_ITT_BUILD
    kmp_uint64              th_bar_arrive_time;           /* arrival to barrier timestamp */
    kmp_uint64              th_bar_min_time;              /* minimum arrival time at the barrier */
    kmp_uint64              th_frame_time;                /* frame timestamp */
#endif /* USE_ITT_BUILD */
    kmp_local_t             th_local;
    struct private_common  *th_pri_head;

/*
 * Now the data only used by the worker (after initial allocation)
 */
    /* TODO the first serial team should actually be stored in the info_t
     * structure.  this will help reduce initial allocation overhead */
    KMP_ALIGN_CACHE kmp_team_p *th_serial_team; /*serialized team held in reserve*/

#if OMPT_SUPPORT
    ompt_thread_info_t      ompt_thread_info;
#endif

/* The following are also read by the master during reinit */
    struct common_table    *th_pri_common;

    volatile kmp_uint32     th_spin_here;   /* thread-local location for spinning */
                                            /* while awaiting queuing lock acquire */

    volatile void          *th_sleep_loc;   // this points at a kmp_flag<T>

    ident_t          *th_ident;
    unsigned         th_x;                     // Random number generator data
    unsigned         th_a;                     // Random number generator data

/*
 * Tasking-related data for the thread
 */
    kmp_task_team_t    * th_task_team;           // Task team struct
    kmp_taskdata_t     * th_current_task;        // Innermost Task being executed
    kmp_uint8            th_task_state;          // alternating 0/1 for task team identification
    kmp_uint8          * th_task_state_memo_stack;  // Stack holding memos of th_task_state at nested levels
    kmp_uint32           th_task_state_top;         // Top element of th_task_state_memo_stack
    kmp_uint32           th_task_state_stack_sz;    // Size of th_task_state_memo_stack

    /*
     * More stuff for keeping track of active/sleeping threads
     * (this part is written by the worker thread)
     */
    kmp_uint8            th_active_in_pool;      // included in count of
                                                 // #active threads in pool
    int                  th_active;              // ! sleeping
                                                 // 32 bits for TCR/TCW

    struct cons_header * th_cons; // used for consistency check

/*
 * Add the syncronizing data which is cache aligned and padded.
 */
    KMP_ALIGN_CACHE kmp_balign_t      th_bar[ bs_last_barrier ];

    KMP_ALIGN_CACHE volatile     kmp_int32    th_next_waiting;  /* gtid+1 of next thread on lock wait queue, 0 if none */

#if ( USE_FAST_MEMORY == 3 ) || ( USE_FAST_MEMORY == 5 )
    #define NUM_LISTS 4
    kmp_free_list_t   th_free_lists[NUM_LISTS];   // Free lists for fast memory allocation routines
#endif

#if KMP_OS_WINDOWS
    kmp_win32_cond_t  th_suspend_cv;
    kmp_win32_mutex_t th_suspend_mx;
    int               th_suspend_init;
#endif
#if KMP_OS_UNIX
    kmp_cond_align_t  th_suspend_cv;
    kmp_mutex_align_t th_suspend_mx;
    int               th_suspend_init_count;
#endif

#if USE_ITT_BUILD
    kmp_itt_mark_t        th_itt_mark_single;
    // alignment ???
#endif /* USE_ITT_BUILD */
#if KMP_STATS_ENABLED
    kmp_stats_list* th_stats;
#endif
} kmp_base_info_t;

typedef union KMP_ALIGN_CACHE kmp_info {
    double          th_align;        /* use worst case alignment */
    char            th_pad[ KMP_PAD(kmp_base_info_t, CACHE_LINE) ];
    kmp_base_info_t th;
} kmp_info_t;

/* ------------------------------------------------------------------------ */
// OpenMP thread team data structures
//
typedef struct kmp_base_data {
    volatile kmp_uint32 t_value;
} kmp_base_data_t;

typedef union KMP_ALIGN_CACHE kmp_sleep_team {
    double              dt_align;        /* use worst case alignment */
    char                dt_pad[ KMP_PAD(kmp_base_data_t, CACHE_LINE) ];
    kmp_base_data_t     dt;
} kmp_sleep_team_t;

typedef union KMP_ALIGN_CACHE kmp_ordered_team {
    double              dt_align;        /* use worst case alignment */
    char                dt_pad[ KMP_PAD(kmp_base_data_t, CACHE_LINE) ];
    kmp_base_data_t     dt;
} kmp_ordered_team_t;

typedef int     (*launch_t)( int gtid );

/* Minimum number of ARGV entries to malloc if necessary */
#define KMP_MIN_MALLOC_ARGV_ENTRIES     100

// Set up how many argv pointers will fit in cache lines containing t_inline_argv. Historically, we
// have supported at least 96 bytes. Using a larger value for more space between the master write/worker
// read section and read/write by all section seems to buy more performance on EPCC PARALLEL.
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
# define KMP_INLINE_ARGV_BYTES         ( 4 * CACHE_LINE - ( ( 3 * KMP_PTR_SKIP + 2 * sizeof(int) + 2 * sizeof(kmp_int8) + sizeof(kmp_int16) + sizeof(kmp_uint32) ) % CACHE_LINE ) )
#else
# define KMP_INLINE_ARGV_BYTES         ( 2 * CACHE_LINE - ( ( 3 * KMP_PTR_SKIP + 2 * sizeof(int) ) % CACHE_LINE ) )
#endif
#define KMP_INLINE_ARGV_ENTRIES        (int)( KMP_INLINE_ARGV_BYTES / KMP_PTR_SKIP )

typedef struct KMP_ALIGN_CACHE kmp_base_team {
    // Synchronization Data ---------------------------------------------------------------------------------
    KMP_ALIGN_CACHE kmp_ordered_team_t t_ordered;
    kmp_balign_team_t        t_bar[ bs_last_barrier ];
    volatile int             t_construct;    // count of single directive encountered by team
    kmp_lock_t               t_single_lock;  // team specific lock

    // Master only -----------------------------------------------------------------------------------------
    KMP_ALIGN_CACHE int      t_master_tid;   // tid of master in parent team
    int                      t_master_this_cons; // "this_construct" single counter of master in parent team
    ident_t                 *t_ident;        // if volatile, have to change too much other crud to volatile too
    kmp_team_p              *t_parent;       // parent team
    kmp_team_p              *t_next_pool;    // next free team in the team pool
    kmp_disp_t              *t_dispatch;     // thread's dispatch data
    kmp_task_team_t         *t_task_team[2]; // Task team struct; switch between 2
#if OMP_40_ENABLED
    kmp_proc_bind_t          t_proc_bind;    // bind type for par region
#endif // OMP_40_ENABLED
#if USE_ITT_BUILD
    kmp_uint64               t_region_time;  // region begin timestamp
#endif /* USE_ITT_BUILD */

    // Master write, workers read --------------------------------------------------------------------------
    KMP_ALIGN_CACHE void   **t_argv;
    int                      t_argc;
    int                      t_nproc;        // number of threads in team
    microtask_t              t_pkfn;
    launch_t                 t_invoke;       // procedure to launch the microtask

#if OMPT_SUPPORT
    ompt_team_info_t         ompt_team_info;
    ompt_lw_taskteam_t      *ompt_serialized_team_info;
#endif

#if KMP_ARCH_X86 || KMP_ARCH_X86_64
    kmp_int8                 t_fp_control_saved;
    kmp_int8                 t_pad2b;
    kmp_int16                t_x87_fpu_control_word; // FP control regs
    kmp_uint32               t_mxcsr;
#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */

    void                    *t_inline_argv[ KMP_INLINE_ARGV_ENTRIES ];

    KMP_ALIGN_CACHE kmp_info_t **t_threads;
    kmp_taskdata_t *t_implicit_task_taskdata;  // Taskdata for the thread's implicit task
    int                      t_level;          // nested parallel level

    KMP_ALIGN_CACHE int      t_max_argc;
    int                      t_max_nproc;    // maximum threads this team can handle (dynamicly expandable)
    int                      t_serialized;   // levels deep of serialized teams
    dispatch_shared_info_t  *t_disp_buffer;  // buffers for dispatch system
    int                      t_id;           // team's id, assigned by debugger.
    int                      t_active_level; // nested active parallel level
    kmp_r_sched_t            t_sched;        // run-time schedule for the team
#if OMP_40_ENABLED && KMP_AFFINITY_SUPPORTED
    int                      t_first_place;  // first & last place in parent thread's partition.
    int                      t_last_place;   // Restore these values to master after par region.
#endif // OMP_40_ENABLED && KMP_AFFINITY_SUPPORTED
    int t_size_changed; // team size was changed?: 0: no, 1: yes, -1: changed via omp_set_num_threads() call

    // Read/write by workers as well -----------------------------------------------------------------------
#if (KMP_ARCH_X86 || KMP_ARCH_X86_64)
    // Using CACHE_LINE=64 reduces memory footprint, but causes a big perf regression of epcc 'parallel'
    // and 'barrier' on fxe256lin01. This extra padding serves to fix the performance of epcc 'parallel'
    // and 'barrier' when CACHE_LINE=64. TODO: investigate more and get rid if this padding.
    char dummy_padding[1024];
#endif
    KMP_ALIGN_CACHE kmp_internal_control_t *t_control_stack_top;  // internal control stack for additional nested teams.
                                                   // for SERIALIZED teams nested 2 or more levels deep
#if OMP_40_ENABLED
    kmp_int32                t_cancel_request; // typed flag to store request state of cancellation
#endif
    int                      t_master_active;  // save on fork, restore on join
    kmp_taskq_t              t_taskq;          // this team's task queue
    void                    *t_copypriv_data;  // team specific pointer to copyprivate data array
    kmp_uint32               t_copyin_counter;
#if USE_ITT_BUILD
    void                    *t_stack_id;       // team specific stack stitching id (for ittnotify)
#endif /* USE_ITT_BUILD */
} kmp_base_team_t;

union KMP_ALIGN_CACHE kmp_team {
    kmp_base_team_t     t;
    double              t_align;       /* use worst case alignment */
    char                t_pad[ KMP_PAD(kmp_base_team_t, CACHE_LINE) ];
};


typedef union KMP_ALIGN_CACHE kmp_time_global {
    double              dt_align;        /* use worst case alignment */
    char                dt_pad[ KMP_PAD(kmp_base_data_t, CACHE_LINE) ];
    kmp_base_data_t     dt;
} kmp_time_global_t;

typedef struct kmp_base_global {
    /* cache-aligned */
    kmp_time_global_t   g_time;

    /* non cache-aligned */
    volatile int        g_abort;
    volatile int        g_done;

    int                 g_dynamic;
    enum dynamic_mode   g_dynamic_mode;
} kmp_base_global_t;

typedef union KMP_ALIGN_CACHE kmp_global {
    kmp_base_global_t   g;
    double              g_align;        /* use worst case alignment */
    char                g_pad[ KMP_PAD(kmp_base_global_t, CACHE_LINE) ];
} kmp_global_t;


typedef struct kmp_base_root {
    // TODO: GEH - combine r_active with r_in_parallel then r_active == (r_in_parallel>= 0)
    // TODO: GEH - then replace r_active with t_active_levels if we can to reduce the synch
    //             overhead or keeping r_active

    volatile int        r_active;       /* TRUE if some region in a nest has > 1 thread */
                                        // GEH: This is misnamed, should be r_in_parallel
    volatile int        r_nested;       // TODO: GEH - This is unused, just remove it entirely.
    int                 r_in_parallel;  /* keeps a count of active parallel regions per root */
                                        // GEH: This is misnamed, should be r_active_levels
    kmp_team_t         *r_root_team;
    kmp_team_t         *r_hot_team;
    kmp_info_t         *r_uber_thread;
    kmp_lock_t          r_begin_lock;
    volatile int        r_begin;
    int                 r_blocktime; /* blocktime for this root and descendants */
} kmp_base_root_t;

typedef union KMP_ALIGN_CACHE kmp_root {
    kmp_base_root_t     r;
    double              r_align;        /* use worst case alignment */
    char                r_pad[ KMP_PAD(kmp_base_root_t, CACHE_LINE) ];
} kmp_root_t;

struct fortran_inx_info {
    kmp_int32   data;
};

/* ------------------------------------------------------------------------ */

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

extern int      __kmp_settings;
extern int      __kmp_duplicate_library_ok;
#if USE_ITT_BUILD
extern int      __kmp_forkjoin_frames;
extern int      __kmp_forkjoin_frames_mode;
#endif
extern PACKED_REDUCTION_METHOD_T __kmp_force_reduction_method;
extern int      __kmp_determ_red;

#ifdef KMP_DEBUG
extern int      kmp_a_debug;
extern int      kmp_b_debug;
extern int      kmp_c_debug;
extern int      kmp_d_debug;
extern int      kmp_e_debug;
extern int      kmp_f_debug;
#endif /* KMP_DEBUG */

/* For debug information logging using rotating buffer */
#define KMP_DEBUG_BUF_LINES_INIT        512
#define KMP_DEBUG_BUF_LINES_MIN         1

#define KMP_DEBUG_BUF_CHARS_INIT        128
#define KMP_DEBUG_BUF_CHARS_MIN         2

extern int     __kmp_debug_buf;            /* TRUE means use buffer, FALSE means print to stderr */
extern int     __kmp_debug_buf_lines;      /* How many lines of debug stored in buffer */
extern int     __kmp_debug_buf_chars;      /* How many characters allowed per line in buffer */
extern int     __kmp_debug_buf_atomic;     /* TRUE means use atomic update of buffer entry pointer */

extern char   *__kmp_debug_buffer;         /* Debug buffer itself */
extern int     __kmp_debug_count;          /* Counter for number of lines printed in buffer so far */
extern int     __kmp_debug_buf_warn_chars; /* Keep track of char increase recommended in warnings */
/* end rotating debug buffer */

#ifdef KMP_DEBUG
extern int      __kmp_par_range;           /* +1 => only go par for constructs in range */

#define KMP_PAR_RANGE_ROUTINE_LEN       1024
extern char     __kmp_par_range_routine[KMP_PAR_RANGE_ROUTINE_LEN];
#define KMP_PAR_RANGE_FILENAME_LEN      1024
extern char     __kmp_par_range_filename[KMP_PAR_RANGE_FILENAME_LEN];
extern int      __kmp_par_range_lb;
extern int      __kmp_par_range_ub;
#endif

/* For printing out dynamic storage map for threads and teams */
extern int      __kmp_storage_map;         /* True means print storage map for threads and teams */
extern int      __kmp_storage_map_verbose; /* True means storage map includes placement info */
extern int      __kmp_storage_map_verbose_specified;

#if KMP_ARCH_X86 || KMP_ARCH_X86_64
extern kmp_cpuinfo_t    __kmp_cpuinfo;
#endif

extern volatile int __kmp_init_serial;
extern volatile int __kmp_init_gtid;
extern volatile int __kmp_init_common;
extern volatile int __kmp_init_middle;
extern volatile int __kmp_init_parallel;
#if KMP_USE_MONITOR
extern volatile int __kmp_init_monitor;
#endif
extern volatile int __kmp_init_user_locks;
extern int __kmp_init_counter;
extern int __kmp_root_counter;
extern int __kmp_version;

/* list of address of allocated caches for commons */
extern kmp_cached_addr_t *__kmp_threadpriv_cache_list;

/* Barrier algorithm types and options */
extern kmp_uint32    __kmp_barrier_gather_bb_dflt;
extern kmp_uint32    __kmp_barrier_release_bb_dflt;
extern kmp_bar_pat_e __kmp_barrier_gather_pat_dflt;
extern kmp_bar_pat_e __kmp_barrier_release_pat_dflt;
extern kmp_uint32    __kmp_barrier_gather_branch_bits  [ bs_last_barrier ];
extern kmp_uint32    __kmp_barrier_release_branch_bits [ bs_last_barrier ];
extern kmp_bar_pat_e __kmp_barrier_gather_pattern      [ bs_last_barrier ];
extern kmp_bar_pat_e __kmp_barrier_release_pattern     [ bs_last_barrier ];
extern char const   *__kmp_barrier_branch_bit_env_name [ bs_last_barrier ];
extern char const   *__kmp_barrier_pattern_env_name    [ bs_last_barrier ];
extern char const   *__kmp_barrier_type_name           [ bs_last_barrier ];
extern char const   *__kmp_barrier_pattern_name        [ bp_last_bar ];

/* Global Locks */
extern kmp_bootstrap_lock_t __kmp_initz_lock;     /* control initialization */
extern kmp_bootstrap_lock_t __kmp_forkjoin_lock;  /* control fork/join access */
extern kmp_bootstrap_lock_t __kmp_exit_lock;      /* exit() is not always thread-safe */
#if KMP_USE_MONITOR
extern kmp_bootstrap_lock_t __kmp_monitor_lock;   /* control monitor thread creation */
#endif
extern kmp_bootstrap_lock_t __kmp_tp_cached_lock; /* used for the hack to allow threadprivate cache and __kmp_threads expansion to co-exist */

extern kmp_lock_t __kmp_global_lock;    /* control OS/global access  */
extern kmp_queuing_lock_t __kmp_dispatch_lock;  /* control dispatch access  */
extern kmp_lock_t __kmp_debug_lock;     /* control I/O access for KMP_DEBUG */

/* used for yielding spin-waits */
extern unsigned int __kmp_init_wait;    /* initial number of spin-tests   */
extern unsigned int __kmp_next_wait;    /* susequent number of spin-tests */

extern enum library_type __kmp_library;

extern enum sched_type  __kmp_sched;    /* default runtime scheduling */
extern enum sched_type  __kmp_static;   /* default static scheduling method */
extern enum sched_type  __kmp_guided;   /* default guided scheduling method */
extern enum sched_type  __kmp_auto;     /* default auto scheduling method */
extern int              __kmp_chunk;    /* default runtime chunk size */

extern size_t     __kmp_stksize;        /* stack size per thread         */
#if KMP_USE_MONITOR
extern size_t     __kmp_monitor_stksize;/* stack size for monitor thread */
#endif
extern size_t     __kmp_stkoffset;      /* stack offset per thread       */
extern int        __kmp_stkpadding;     /* Should we pad root thread(s) stack */

extern size_t     __kmp_malloc_pool_incr; /* incremental size of pool for kmp_malloc() */
extern int        __kmp_env_chunk;      /* was KMP_CHUNK specified?     */
extern int        __kmp_env_stksize;    /* was KMP_STACKSIZE specified? */
extern int        __kmp_env_omp_stksize;/* was OMP_STACKSIZE specified? */
extern int        __kmp_env_all_threads;    /* was KMP_ALL_THREADS or KMP_MAX_THREADS specified? */
extern int        __kmp_env_omp_all_threads;/* was OMP_THREAD_LIMIT specified? */
extern int        __kmp_env_blocktime;  /* was KMP_BLOCKTIME specified? */
extern int        __kmp_env_checks;     /* was KMP_CHECKS specified?    */
extern int        __kmp_env_consistency_check;     /* was KMP_CONSISTENCY_CHECK specified?    */
extern int        __kmp_generate_warnings; /* should we issue warnings? */
extern int        __kmp_reserve_warn;   /* have we issued reserve_threads warning? */

#ifdef DEBUG_SUSPEND
extern int        __kmp_suspend_count;  /* count inside __kmp_suspend_template() */
#endif

extern kmp_uint32 __kmp_yield_init;
extern kmp_uint32 __kmp_yield_next;

#if KMP_USE_MONITOR
extern kmp_uint32 __kmp_yielding_on;
extern kmp_uint32 __kmp_yield_cycle;
extern kmp_int32  __kmp_yield_on_count;
extern kmp_int32  __kmp_yield_off_count;
#endif

/* ------------------------------------------------------------------------- */
extern int        __kmp_allThreadsSpecified;

extern size_t     __kmp_align_alloc;
/* following data protected by initialization routines */
extern int        __kmp_xproc;          /* number of processors in the system */
extern int        __kmp_avail_proc;      /* number of processors available to the process */
extern size_t     __kmp_sys_min_stksize; /* system-defined minimum stack size */
extern int        __kmp_sys_max_nth;    /* system-imposed maximum number of threads */
extern int        __kmp_max_nth;        /* maximum total number of concurrently-existing threads */
extern int        __kmp_threads_capacity; /* capacity of the arrays __kmp_threads and __kmp_root */
extern int        __kmp_dflt_team_nth;  /* default number of threads in a parallel region a la OMP_NUM_THREADS */
extern int        __kmp_dflt_team_nth_ub; /* upper bound on "" determined at serial initialization */
extern int        __kmp_tp_capacity;    /* capacity of __kmp_threads if threadprivate is used (fixed) */
extern int        __kmp_tp_cached;      /* whether threadprivate cache has been created (__kmpc_threadprivate_cached()) */
extern int        __kmp_dflt_nested;    /* nested parallelism enabled by default a la OMP_NESTED */
extern int        __kmp_dflt_blocktime; /* number of milliseconds to wait before blocking (env setting) */
#if KMP_USE_MONITOR
extern int        __kmp_monitor_wakeups;/* number of times monitor wakes up per second */
extern int        __kmp_bt_intervals;   /* number of monitor timestamp intervals before blocking */
#endif
#ifdef KMP_ADJUST_BLOCKTIME
extern int        __kmp_zero_bt;        /* whether blocktime has been forced to zero */
#endif /* KMP_ADJUST_BLOCKTIME */
#ifdef KMP_DFLT_NTH_CORES
extern int        __kmp_ncores;         /* Total number of cores for threads placement */
#endif
extern int        __kmp_abort_delay;    /* Number of millisecs to delay on abort for VTune */

extern int        __kmp_need_register_atfork_specified;
extern int        __kmp_need_register_atfork;/* At initialization, call pthread_atfork to install fork handler */
extern int        __kmp_gtid_mode;      /* Method of getting gtid, values:
                                           0 - not set, will be set at runtime
                                           1 - using stack search
                                           2 - dynamic TLS (pthread_getspecific(Linux* OS/OS X*) or TlsGetValue(Windows* OS))
                                           3 - static TLS (__declspec(thread) __kmp_gtid), Linux* OS .so only.
                                         */
extern int        __kmp_adjust_gtid_mode; /* If true, adjust method based on #threads */
#ifdef KMP_TDATA_GTID
#if KMP_OS_WINDOWS
extern __declspec(thread) int __kmp_gtid; /* This thread's gtid, if __kmp_gtid_mode == 3 */
#else
extern __thread int __kmp_gtid;
#endif /* KMP_OS_WINDOWS - workaround because Intel(R) Many Integrated Core compiler 20110316 doesn't accept __declspec */
#endif
extern int        __kmp_tls_gtid_min;   /* #threads below which use sp search for gtid */
extern int        __kmp_foreign_tp;     /* If true, separate TP var for each foreign thread */
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
extern int        __kmp_inherit_fp_control; /* copy fp creg(s) parent->workers at fork */
extern kmp_int16  __kmp_init_x87_fpu_control_word; /* init thread's FP control reg */
extern kmp_uint32 __kmp_init_mxcsr;      /* init thread's mxscr */
#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */

extern int        __kmp_dflt_max_active_levels; /* max_active_levels for nested parallelism enabled by default a la OMP_MAX_ACTIVE_LEVELS */
extern int        __kmp_dispatch_num_buffers; /* max possible dynamic loops in concurrent execution per team */
#if KMP_NESTED_HOT_TEAMS
extern int        __kmp_hot_teams_mode;
extern int        __kmp_hot_teams_max_level;
#endif

# if KMP_OS_LINUX
extern enum clock_function_type __kmp_clock_function;
extern int __kmp_clock_function_param;
# endif /* KMP_OS_LINUX */

#if KMP_ARCH_X86_64 && (KMP_OS_LINUX || KMP_OS_WINDOWS)
extern enum mic_type __kmp_mic_type;
#endif

# ifdef USE_LOAD_BALANCE
extern double      __kmp_load_balance_interval;   /* Interval for the load balance algorithm */
# endif /* USE_LOAD_BALANCE */

// OpenMP 3.1 - Nested num threads array
typedef struct kmp_nested_nthreads_t {
    int * nth;
    int   size;
    int   used;
} kmp_nested_nthreads_t;

extern kmp_nested_nthreads_t __kmp_nested_nth;

#if KMP_USE_ADAPTIVE_LOCKS

// Parameters for the speculative lock backoff system.
struct kmp_adaptive_backoff_params_t {
    // Number of soft retries before it counts as a hard retry.
    kmp_uint32 max_soft_retries;
    // Badness is a bit mask : 0,1,3,7,15,... on each hard failure we move one to the right
    kmp_uint32 max_badness;
};

extern kmp_adaptive_backoff_params_t __kmp_adaptive_backoff_params;

#if KMP_DEBUG_ADAPTIVE_LOCKS
extern char * __kmp_speculative_statsfile;
#endif

#endif // KMP_USE_ADAPTIVE_LOCKS

#if OMP_40_ENABLED
extern int __kmp_display_env;           /* TRUE or FALSE */
extern int __kmp_display_env_verbose;   /* TRUE if OMP_DISPLAY_ENV=VERBOSE */
extern int __kmp_omp_cancellation;      /* TRUE or FALSE */
#endif

/* ------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------- */
/* the following are protected by the fork/join lock */
/* write: lock  read: anytime */
extern          kmp_info_t **__kmp_threads;      /* Descriptors for the threads */
/* read/write: lock */
extern volatile kmp_team_t  *     __kmp_team_pool;
extern volatile kmp_info_t  *     __kmp_thread_pool;

/* total number of threads reachable from some root thread including all root threads*/
extern volatile int __kmp_nth;
/* total number of threads reachable from some root thread including all root threads,
   and those in the thread pool */
extern volatile int __kmp_all_nth;
extern int __kmp_thread_pool_nth;
extern volatile int __kmp_thread_pool_active_nth;

extern kmp_root_t **__kmp_root;         /* root of thread hierarchy */
/* end data protected by fork/join lock */
/* --------------------------------------------------------------------------- */

extern kmp_global_t  __kmp_global;         /* global status */

extern kmp_info_t __kmp_monitor;
extern volatile kmp_uint32 __kmp_team_counter;      // Used by Debugging Support Library.
extern volatile kmp_uint32 __kmp_task_counter;      // Used by Debugging Support Library.

#if USE_DEBUGGER

#define _KMP_GEN_ID( counter )                                         \
    (                                                                  \
        __kmp_debugging                                                \
        ?                                                              \
        KMP_TEST_THEN_INC32( (volatile kmp_int32 *) & counter ) + 1    \
        :                                                              \
        ~ 0                                                            \
    )
#else
#define _KMP_GEN_ID( counter )                                         \
    (                                                                  \
        ~ 0                                                            \
    )
#endif /* USE_DEBUGGER */

#define KMP_GEN_TASK_ID()    _KMP_GEN_ID( __kmp_task_counter )
#define KMP_GEN_TEAM_ID()    _KMP_GEN_ID( __kmp_team_counter )

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

extern void __kmp_print_storage_map_gtid( int gtid, void *p1, void* p2, size_t size, char const *format, ... );

extern void __kmp_serial_initialize( void );
extern void __kmp_middle_initialize( void );
extern void __kmp_parallel_initialize( void );

extern void __kmp_internal_begin( void );
extern void __kmp_internal_end_library( int gtid );
extern void __kmp_internal_end_thread( int gtid );
extern void __kmp_internal_end_atexit( void );
extern void __kmp_internal_end_fini( void );
extern void __kmp_internal_end_dtor( void );
extern void __kmp_internal_end_dest( void* );

extern int  __kmp_register_root( int initial_thread );
extern void __kmp_unregister_root( int gtid );

extern int  __kmp_ignore_mppbeg( void );
extern int  __kmp_ignore_mppend( void );

extern int  __kmp_enter_single( int gtid, ident_t *id_ref, int push_ws );
extern void __kmp_exit_single( int gtid );

extern void __kmp_parallel_deo( int *gtid_ref, int *cid_ref, ident_t *loc_ref );
extern void __kmp_parallel_dxo( int *gtid_ref, int *cid_ref, ident_t *loc_ref );

#ifdef USE_LOAD_BALANCE
extern int  __kmp_get_load_balance( int );
#endif

#ifdef BUILD_TV
extern void __kmp_tv_threadprivate_store( kmp_info_t *th, void *global_addr, void *thread_addr );
#endif

extern int  __kmp_get_global_thread_id( void );
extern int  __kmp_get_global_thread_id_reg( void );
extern void __kmp_exit_thread( int exit_status );
extern void __kmp_abort( char const * format, ... );
extern void __kmp_abort_thread( void );
extern void __kmp_abort_process( void );
extern void __kmp_warn( char const * format, ... );

extern void __kmp_set_num_threads( int new_nth, int gtid );

// Returns current thread (pointer to kmp_info_t). Current thread *must* be registered.
static inline kmp_info_t * __kmp_entry_thread()
{
      int gtid = __kmp_entry_gtid();

      return __kmp_threads[gtid];
}

extern void __kmp_set_max_active_levels( int gtid, int new_max_active_levels );
extern int  __kmp_get_max_active_levels( int gtid );
extern int  __kmp_get_ancestor_thread_num( int gtid, int level );
extern int  __kmp_get_team_size( int gtid, int level );
extern void __kmp_set_schedule( int gtid, kmp_sched_t new_sched, int chunk );
extern void __kmp_get_schedule( int gtid, kmp_sched_t * sched, int * chunk );

extern unsigned short __kmp_get_random( kmp_info_t * thread );
extern void __kmp_init_random( kmp_info_t * thread );

extern kmp_r_sched_t __kmp_get_schedule_global( void );
extern void __kmp_adjust_num_threads( int new_nproc );

extern void * ___kmp_allocate( size_t size KMP_SRC_LOC_DECL );
extern void * ___kmp_page_allocate( size_t size KMP_SRC_LOC_DECL );
extern void   ___kmp_free( void * ptr KMP_SRC_LOC_DECL );
#define __kmp_allocate( size )      ___kmp_allocate( (size) KMP_SRC_LOC_CURR )
#define __kmp_page_allocate( size ) ___kmp_page_allocate( (size) KMP_SRC_LOC_CURR )
#define __kmp_free( ptr )           ___kmp_free( (ptr) KMP_SRC_LOC_CURR )

#if USE_FAST_MEMORY
extern void * ___kmp_fast_allocate( kmp_info_t *this_thr, size_t size KMP_SRC_LOC_DECL );
extern void   ___kmp_fast_free( kmp_info_t *this_thr, void *ptr KMP_SRC_LOC_DECL );
extern void   __kmp_free_fast_memory( kmp_info_t *this_thr );
extern void   __kmp_initialize_fast_memory( kmp_info_t *this_thr );
#define __kmp_fast_allocate( this_thr, size ) ___kmp_fast_allocate( (this_thr), (size) KMP_SRC_LOC_CURR )
#define __kmp_fast_free( this_thr, ptr )      ___kmp_fast_free( (this_thr), (ptr) KMP_SRC_LOC_CURR )
#endif

extern void * ___kmp_thread_malloc( kmp_info_t *th, size_t size KMP_SRC_LOC_DECL );
extern void * ___kmp_thread_calloc( kmp_info_t *th, size_t nelem, size_t elsize KMP_SRC_LOC_DECL );
extern void * ___kmp_thread_realloc( kmp_info_t *th, void *ptr, size_t size KMP_SRC_LOC_DECL );
extern void   ___kmp_thread_free( kmp_info_t *th, void *ptr KMP_SRC_LOC_DECL );
#define __kmp_thread_malloc(  th, size )          ___kmp_thread_malloc(  (th), (size)            KMP_SRC_LOC_CURR )
#define __kmp_thread_calloc(  th, nelem, elsize ) ___kmp_thread_calloc(  (th), (nelem), (elsize) KMP_SRC_LOC_CURR )
#define __kmp_thread_realloc( th, ptr, size )     ___kmp_thread_realloc( (th), (ptr), (size)     KMP_SRC_LOC_CURR )
#define __kmp_thread_free(    th, ptr )           ___kmp_thread_free(    (th), (ptr)             KMP_SRC_LOC_CURR )

#define KMP_INTERNAL_MALLOC(sz)    malloc(sz)
#define KMP_INTERNAL_FREE(p)       free(p)
#define KMP_INTERNAL_REALLOC(p,sz) realloc((p),(sz))
#define KMP_INTERNAL_CALLOC(n,sz)  calloc((n),(sz))

extern void __kmp_push_num_threads( ident_t *loc, int gtid, int num_threads );

#if OMP_40_ENABLED
extern void __kmp_push_proc_bind( ident_t *loc, int gtid, kmp_proc_bind_t proc_bind );
extern void __kmp_push_num_teams( ident_t *loc, int gtid, int num_teams, int num_threads );
#endif

extern void __kmp_yield( int cond );

extern void __kmpc_dispatch_init_4( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_int32 lb, kmp_int32 ub, kmp_int32 st,
    kmp_int32 chunk );
extern void __kmpc_dispatch_init_4u( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_uint32 lb, kmp_uint32 ub, kmp_int32 st,
    kmp_int32 chunk );
extern void __kmpc_dispatch_init_8( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_int64 lb, kmp_int64 ub, kmp_int64 st,
    kmp_int64 chunk );
extern void __kmpc_dispatch_init_8u( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_uint64 lb, kmp_uint64 ub, kmp_int64 st,
    kmp_int64 chunk );

extern int __kmpc_dispatch_next_4( ident_t *loc, kmp_int32 gtid,
    kmp_int32 *p_last, kmp_int32 *p_lb, kmp_int32 *p_ub, kmp_int32 *p_st );
extern int __kmpc_dispatch_next_4u( ident_t *loc, kmp_int32 gtid,
    kmp_int32 *p_last, kmp_uint32 *p_lb, kmp_uint32 *p_ub, kmp_int32 *p_st );
extern int __kmpc_dispatch_next_8( ident_t *loc, kmp_int32 gtid,
    kmp_int32 *p_last, kmp_int64 *p_lb, kmp_int64 *p_ub, kmp_int64 *p_st );
extern int __kmpc_dispatch_next_8u( ident_t *loc, kmp_int32 gtid,
    kmp_int32 *p_last, kmp_uint64 *p_lb, kmp_uint64 *p_ub, kmp_int64 *p_st );

extern void __kmpc_dispatch_fini_4( ident_t *loc, kmp_int32 gtid );
extern void __kmpc_dispatch_fini_8( ident_t *loc, kmp_int32 gtid );
extern void __kmpc_dispatch_fini_4u( ident_t *loc, kmp_int32 gtid );
extern void __kmpc_dispatch_fini_8u( ident_t *loc, kmp_int32 gtid );


#ifdef KMP_GOMP_COMPAT

extern void __kmp_aux_dispatch_init_4( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_int32 lb, kmp_int32 ub, kmp_int32 st,
    kmp_int32 chunk, int push_ws );
extern void __kmp_aux_dispatch_init_4u( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_uint32 lb, kmp_uint32 ub, kmp_int32 st,
    kmp_int32 chunk, int push_ws );
extern void __kmp_aux_dispatch_init_8( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_int64 lb, kmp_int64 ub, kmp_int64 st,
    kmp_int64 chunk, int push_ws );
extern void __kmp_aux_dispatch_init_8u( ident_t *loc, kmp_int32 gtid,
    enum sched_type schedule, kmp_uint64 lb, kmp_uint64 ub, kmp_int64 st,
    kmp_int64 chunk, int push_ws );
extern void __kmp_aux_dispatch_fini_chunk_4( ident_t *loc, kmp_int32 gtid );
extern void __kmp_aux_dispatch_fini_chunk_8( ident_t *loc, kmp_int32 gtid );
extern void __kmp_aux_dispatch_fini_chunk_4u( ident_t *loc, kmp_int32 gtid );
extern void __kmp_aux_dispatch_fini_chunk_8u( ident_t *loc, kmp_int32 gtid );

#endif /* KMP_GOMP_COMPAT */


extern kmp_uint32 __kmp_eq_4(  kmp_uint32 value, kmp_uint32 checker );
extern kmp_uint32 __kmp_neq_4( kmp_uint32 value, kmp_uint32 checker );
extern kmp_uint32 __kmp_lt_4(  kmp_uint32 value, kmp_uint32 checker );
extern kmp_uint32 __kmp_ge_4(  kmp_uint32 value, kmp_uint32 checker );
extern kmp_uint32 __kmp_le_4(  kmp_uint32 value, kmp_uint32 checker );
extern kmp_uint32 __kmp_wait_yield_4( kmp_uint32 volatile * spinner, kmp_uint32 checker, kmp_uint32 (*pred) (kmp_uint32, kmp_uint32), void * obj );
extern void __kmp_wait_yield_4_ptr( void * spinner, kmp_uint32 checker, kmp_uint32 (* pred)( void *, kmp_uint32 ), void * obj );

class kmp_flag_32;
class kmp_flag_64;
class kmp_flag_oncore;
extern void __kmp_wait_64(kmp_info_t *this_thr, kmp_flag_64 *flag, int final_spin
#if USE_ITT_BUILD
                   , void * itt_sync_obj
#endif
                   );
extern void __kmp_release_64(kmp_flag_64 *flag);

extern void __kmp_infinite_loop( void );

extern void __kmp_cleanup( void );

#if KMP_HANDLE_SIGNALS
    extern int  __kmp_handle_signals;
    extern void __kmp_install_signals( int parallel_init );
    extern void __kmp_remove_signals( void );
#endif

extern void __kmp_clear_system_time( void );
extern void __kmp_read_system_time( double *delta );

extern void __kmp_check_stack_overlap( kmp_info_t *thr );

extern void __kmp_expand_host_name( char *buffer, size_t size );
extern void __kmp_expand_file_name( char *result, size_t rlen, char *pattern );

#if KMP_ARCH_X86 || KMP_ARCH_X86_64
extern void __kmp_initialize_system_tick( void );  /* Initialize timer tick value */
#endif

extern void __kmp_runtime_initialize( void );  /* machine specific initialization */
extern void __kmp_runtime_destroy( void );

#if KMP_AFFINITY_SUPPORTED
extern char *__kmp_affinity_print_mask(char *buf, int buf_len, kmp_affin_mask_t *mask);
extern void __kmp_affinity_initialize(void);
extern void __kmp_affinity_uninitialize(void);
extern void __kmp_affinity_set_init_mask(int gtid, int isa_root); /* set affinity according to KMP_AFFINITY */
#if OMP_40_ENABLED
extern void __kmp_affinity_set_place(int gtid);
#endif
extern void __kmp_affinity_determine_capable( const char *env_var );
extern int __kmp_aux_set_affinity(void **mask);
extern int __kmp_aux_get_affinity(void **mask);
extern int __kmp_aux_get_affinity_max_proc();
extern int __kmp_aux_set_affinity_mask_proc(int proc, void **mask);
extern int __kmp_aux_unset_affinity_mask_proc(int proc, void **mask);
extern int __kmp_aux_get_affinity_mask_proc(int proc, void **mask);
extern void __kmp_balanced_affinity( int tid, int team_size );
#endif /* KMP_AFFINITY_SUPPORTED */

extern void __kmp_cleanup_hierarchy();
extern void __kmp_get_hierarchy(kmp_uint32 nproc, kmp_bstate_t *thr_bar);

#if KMP_USE_FUTEX

extern int __kmp_futex_determine_capable( void );

#endif // KMP_USE_FUTEX

extern void __kmp_gtid_set_specific( int gtid );
extern int  __kmp_gtid_get_specific( void );

extern double __kmp_read_cpu_time( void );

extern int  __kmp_read_system_info( struct kmp_sys_info *info );

#if KMP_USE_MONITOR
extern void __kmp_create_monitor( kmp_info_t *th );
#endif

extern void *__kmp_launch_thread( kmp_info_t *thr );

extern void __kmp_create_worker( int gtid, kmp_info_t *th, size_t stack_size );

#if KMP_OS_WINDOWS
extern int  __kmp_still_running(kmp_info_t *th);
extern int  __kmp_is_thread_alive( kmp_info_t * th, DWORD *exit_val );
extern void __kmp_free_handle( kmp_thread_t tHandle );
#endif

#if KMP_USE_MONITOR
extern void __kmp_reap_monitor( kmp_info_t *th );
#endif
extern void __kmp_reap_worker( kmp_info_t *th );
extern void __kmp_terminate_thread( int gtid );

extern void __kmp_suspend_32( int th_gtid, kmp_flag_32 *flag );
extern void __kmp_suspend_64( int th_gtid, kmp_flag_64 *flag );
extern void __kmp_suspend_oncore( int th_gtid, kmp_flag_oncore *flag );
extern void __kmp_resume_32( int target_gtid, kmp_flag_32 *flag );
extern void __kmp_resume_64( int target_gtid, kmp_flag_64 *flag );
extern void __kmp_resume_oncore( int target_gtid, kmp_flag_oncore *flag );

extern void __kmp_elapsed( double * );
extern void __kmp_elapsed_tick( double * );

extern void __kmp_enable( int old_state );
extern void __kmp_disable( int *old_state );

extern void __kmp_thread_sleep( int millis );

extern void __kmp_common_initialize( void );
extern void __kmp_common_destroy( void );
extern void __kmp_common_destroy_gtid( int gtid );

#if KMP_OS_UNIX
extern void __kmp_register_atfork( void );
#endif
extern void __kmp_suspend_initialize( void );
extern void __kmp_suspend_uninitialize_thread( kmp_info_t *th );

extern kmp_info_t * __kmp_allocate_thread( kmp_root_t *root,
                                           kmp_team_t *team, int tid);
#if OMP_40_ENABLED
extern kmp_team_t * __kmp_allocate_team( kmp_root_t *root, int new_nproc, int max_nproc,
#if OMPT_SUPPORT
                                         ompt_parallel_id_t ompt_parallel_id,
#endif
                                         kmp_proc_bind_t proc_bind,
                                         kmp_internal_control_t *new_icvs,
                                         int argc USE_NESTED_HOT_ARG(kmp_info_t *thr) );
#else
extern kmp_team_t * __kmp_allocate_team( kmp_root_t *root, int new_nproc, int max_nproc,
#if OMPT_SUPPORT
                                         ompt_parallel_id_t ompt_parallel_id,
#endif
                                         kmp_internal_control_t *new_icvs,
                                         int argc USE_NESTED_HOT_ARG(kmp_info_t *thr) );
#endif // OMP_40_ENABLED
extern void __kmp_free_thread( kmp_info_t * );
extern void __kmp_free_team( kmp_root_t *, kmp_team_t *  USE_NESTED_HOT_ARG(kmp_info_t *) );
extern kmp_team_t * __kmp_reap_team( kmp_team_t * );

/* ------------------------------------------------------------------------ */

extern void __kmp_initialize_bget( kmp_info_t *th );
extern void __kmp_finalize_bget( kmp_info_t *th );

KMP_EXPORT void *kmpc_malloc( size_t size );
KMP_EXPORT void *kmpc_aligned_malloc( size_t size, size_t alignment );
KMP_EXPORT void *kmpc_calloc( size_t nelem, size_t elsize );
KMP_EXPORT void *kmpc_realloc( void *ptr, size_t size );
KMP_EXPORT void  kmpc_free( void *ptr );

/* ------------------------------------------------------------------------ */
/* declarations for internal use */

extern int  __kmp_barrier( enum barrier_type bt, int gtid, int is_split,
                           size_t reduce_size, void *reduce_data, void (*reduce)(void *, void *) );
extern void __kmp_end_split_barrier ( enum barrier_type bt, int gtid );

/*!
 * Tell the fork call which compiler generated the fork call, and therefore how to deal with the call.
 */
enum fork_context_e
{
    fork_context_gnu,                           /**< Called from GNU generated code, so must not invoke the microtask internally. */
    fork_context_intel,                         /**< Called from Intel generated code.  */
    fork_context_last
};
extern int __kmp_fork_call( ident_t *loc, int gtid, enum fork_context_e fork_context,
  kmp_int32 argc,
#if OMPT_SUPPORT
  void *unwrapped_task,
#endif
  microtask_t microtask, launch_t invoker,
/* TODO: revert workaround for Intel(R) 64 tracker #96 */
#if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64) && KMP_OS_LINUX
                             va_list *ap
#else
                             va_list ap
#endif
                             );

extern void __kmp_join_call( ident_t *loc, int gtid
#if OMPT_SUPPORT
                           , enum fork_context_e fork_context
#endif
#if OMP_40_ENABLED
                           , int exit_teams = 0
#endif
                           );

extern void __kmp_serialized_parallel(ident_t *id, kmp_int32 gtid);
extern void __kmp_internal_fork( ident_t *id, int gtid, kmp_team_t *team );
extern void __kmp_internal_join( ident_t *id, int gtid, kmp_team_t *team );
extern int __kmp_invoke_task_func( int gtid );
extern void __kmp_run_before_invoked_task( int gtid, int tid, kmp_info_t *this_thr, kmp_team_t *team );
extern void __kmp_run_after_invoked_task( int gtid, int tid, kmp_info_t *this_thr, kmp_team_t *team );

// should never have been exported
KMP_EXPORT int __kmpc_invoke_task_func( int gtid );
#if OMP_40_ENABLED
extern int  __kmp_invoke_teams_master( int gtid );
extern void __kmp_teams_master( int gtid );
#endif
extern void __kmp_save_internal_controls( kmp_info_t * thread );
extern void __kmp_user_set_library (enum library_type arg);
extern void __kmp_aux_set_library (enum library_type arg);
extern void __kmp_aux_set_stacksize( size_t arg);
extern void __kmp_aux_set_blocktime (int arg, kmp_info_t *thread, int tid);
extern void __kmp_aux_set_defaults( char const * str, int len );

/* Functions below put here to call them from __kmp_aux_env_initialize() in kmp_settings.c */
void kmpc_set_blocktime (int arg);
void ompc_set_nested( int flag );
void ompc_set_dynamic( int flag );
void ompc_set_num_threads( int arg );

extern void __kmp_push_current_task_to_thread( kmp_info_t *this_thr,
                  kmp_team_t *team, int tid );
extern void __kmp_pop_current_task_from_thread( kmp_info_t *this_thr );
extern kmp_task_t* __kmp_task_alloc( ident_t *loc_ref, kmp_int32 gtid,
  kmp_tasking_flags_t *flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds,
  kmp_routine_entry_t task_entry );
extern void __kmp_init_implicit_task( ident_t *loc_ref, kmp_info_t *this_thr,
                  kmp_team_t *team, int tid, int set_curr_task );
extern void __kmp_finish_implicit_task(kmp_info_t *this_thr);
extern void __kmp_free_implicit_task(kmp_info_t *this_thr);

int __kmp_execute_tasks_32(kmp_info_t *thread, kmp_int32 gtid, kmp_flag_32 *flag, int final_spin,
                           int *thread_finished,
#if USE_ITT_BUILD
                           void * itt_sync_obj,
#endif /* USE_ITT_BUILD */
                           kmp_int32 is_constrained);
int __kmp_execute_tasks_64(kmp_info_t *thread, kmp_int32 gtid, kmp_flag_64 *flag, int final_spin,
                           int *thread_finished,
#if USE_ITT_BUILD
                           void * itt_sync_obj,
#endif /* USE_ITT_BUILD */
                           kmp_int32 is_constrained);
int __kmp_execute_tasks_oncore(kmp_info_t *thread, kmp_int32 gtid, kmp_flag_oncore *flag, int final_spin,
                               int *thread_finished,
#if USE_ITT_BUILD
                               void * itt_sync_obj,
#endif /* USE_ITT_BUILD */
                               kmp_int32 is_constrained);

extern void __kmp_free_task_team( kmp_info_t *thread, kmp_task_team_t *task_team );
extern void __kmp_reap_task_teams( void );
extern void __kmp_wait_to_unref_task_teams( void );
extern void __kmp_task_team_setup ( kmp_info_t *this_thr, kmp_team_t *team, int always );
extern void __kmp_task_team_sync  ( kmp_info_t *this_thr, kmp_team_t *team );
extern void __kmp_task_team_wait  ( kmp_info_t *this_thr, kmp_team_t *team
#if USE_ITT_BUILD
                                    , void * itt_sync_obj
#endif /* USE_ITT_BUILD */
                                    , int wait=1
);
extern void __kmp_tasking_barrier( kmp_team_t *team, kmp_info_t *thread, int gtid );

extern int  __kmp_is_address_mapped( void *addr );
extern kmp_uint64 __kmp_hardware_timestamp(void);

#if KMP_OS_UNIX
extern int  __kmp_read_from_file( char const *path, char const *format, ... );
#endif

/* ------------------------------------------------------------------------ */
//
// Assembly routines that have no compiler intrinsic replacement
//

#if KMP_ARCH_X86 || KMP_ARCH_X86_64

extern void       __kmp_query_cpuid( kmp_cpuinfo_t *p );

#define __kmp_load_mxcsr(p) _mm_setcsr(*(p))
static inline void __kmp_store_mxcsr( kmp_uint32 *p ) { *p = _mm_getcsr(); }

extern void __kmp_load_x87_fpu_control_word( kmp_int16 *p );
extern void __kmp_store_x87_fpu_control_word( kmp_int16 *p );
extern void __kmp_clear_x87_fpu_status_word();
# define KMP_X86_MXCSR_MASK      0xffffffc0   /* ignore status flags (6 lsb) */

#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */

extern int __kmp_invoke_microtask( microtask_t pkfn, int gtid, int npr, int argc, void *argv[]
#if OMPT_SUPPORT
                                   , void **exit_frame_ptr
#endif
);


/* ------------------------------------------------------------------------ */

KMP_EXPORT void   __kmpc_begin                ( ident_t *, kmp_int32 flags );
KMP_EXPORT void   __kmpc_end                  ( ident_t * );

KMP_EXPORT void   __kmpc_threadprivate_register_vec ( ident_t *, void * data, kmpc_ctor_vec ctor,
                                                  kmpc_cctor_vec cctor, kmpc_dtor_vec dtor, size_t vector_length );
KMP_EXPORT void   __kmpc_threadprivate_register     ( ident_t *, void * data, kmpc_ctor ctor, kmpc_cctor cctor, kmpc_dtor dtor );
KMP_EXPORT void * __kmpc_threadprivate              ( ident_t *, kmp_int32 global_tid, void * data, size_t size );

KMP_EXPORT kmp_int32  __kmpc_global_thread_num  ( ident_t * );
KMP_EXPORT kmp_int32  __kmpc_global_num_threads ( ident_t * );
KMP_EXPORT kmp_int32  __kmpc_bound_thread_num   ( ident_t * );
KMP_EXPORT kmp_int32  __kmpc_bound_num_threads  ( ident_t * );

KMP_EXPORT kmp_int32  __kmpc_ok_to_fork     ( ident_t * );
KMP_EXPORT void   __kmpc_fork_call          ( ident_t *, kmp_int32 nargs, kmpc_micro microtask, ... );

KMP_EXPORT void   __kmpc_serialized_parallel     ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_end_serialized_parallel ( ident_t *, kmp_int32 global_tid );

KMP_EXPORT void   __kmpc_flush              ( ident_t *);
KMP_EXPORT void   __kmpc_barrier            ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT kmp_int32  __kmpc_master         ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_end_master         ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_ordered            ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_end_ordered        ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_critical           ( ident_t *, kmp_int32 global_tid, kmp_critical_name * );
KMP_EXPORT void   __kmpc_end_critical       ( ident_t *, kmp_int32 global_tid, kmp_critical_name * );

#if OMP_45_ENABLED
KMP_EXPORT void   __kmpc_critical_with_hint ( ident_t *, kmp_int32 global_tid, kmp_critical_name *, uintptr_t hint );
#endif

KMP_EXPORT kmp_int32  __kmpc_barrier_master ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_end_barrier_master ( ident_t *, kmp_int32 global_tid );

KMP_EXPORT kmp_int32  __kmpc_barrier_master_nowait ( ident_t *, kmp_int32 global_tid );

KMP_EXPORT kmp_int32  __kmpc_single         ( ident_t *, kmp_int32 global_tid );
KMP_EXPORT void   __kmpc_end_single         ( ident_t *, kmp_int32 global_tid );

KMP_EXPORT void KMPC_FOR_STATIC_INIT    ( ident_t *loc, kmp_int32 global_tid, kmp_int32 schedtype, kmp_int32 *plastiter,
                                          kmp_int *plower, kmp_int *pupper, kmp_int *pstride, kmp_int incr, kmp_int chunk );

KMP_EXPORT void __kmpc_for_static_fini  ( ident_t *loc, kmp_int32 global_tid );

KMP_EXPORT void __kmpc_copyprivate( ident_t *loc, kmp_int32 global_tid, size_t cpy_size, void *cpy_data, void(*cpy_func)(void*,void*), kmp_int32 didit );

extern void KMPC_SET_NUM_THREADS        ( int arg );
extern void KMPC_SET_DYNAMIC            ( int flag );
extern void KMPC_SET_NESTED             ( int flag );

/* --------------------------------------------------------------------------- */

/*
 * Taskq interface routines
 */

KMP_EXPORT kmpc_thunk_t * __kmpc_taskq (ident_t *loc, kmp_int32 global_tid, kmpc_task_t taskq_task, size_t sizeof_thunk,
                                        size_t sizeof_shareds, kmp_int32 flags, kmpc_shared_vars_t **shareds);
KMP_EXPORT void __kmpc_end_taskq (ident_t *loc, kmp_int32 global_tid, kmpc_thunk_t *thunk);
KMP_EXPORT kmp_int32 __kmpc_task (ident_t *loc, kmp_int32 global_tid, kmpc_thunk_t *thunk);
KMP_EXPORT void __kmpc_taskq_task (ident_t *loc, kmp_int32 global_tid, kmpc_thunk_t *thunk, kmp_int32 status);
KMP_EXPORT void __kmpc_end_taskq_task (ident_t *loc, kmp_int32 global_tid, kmpc_thunk_t *thunk);
KMP_EXPORT kmpc_thunk_t * __kmpc_task_buffer (ident_t *loc, kmp_int32 global_tid, kmpc_thunk_t *taskq_thunk, kmpc_task_t task);

/* ------------------------------------------------------------------------ */

/*
 * OMP 3.0 tasking interface routines
 */

KMP_EXPORT kmp_int32
__kmpc_omp_task( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t * new_task );
KMP_EXPORT kmp_task_t*
__kmpc_omp_task_alloc( ident_t *loc_ref, kmp_int32 gtid, kmp_int32 flags,
                       size_t sizeof_kmp_task_t, size_t sizeof_shareds,
                       kmp_routine_entry_t task_entry );
KMP_EXPORT void
__kmpc_omp_task_begin_if0( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t * task );
KMP_EXPORT void
__kmpc_omp_task_complete_if0( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *task );
KMP_EXPORT kmp_int32
__kmpc_omp_task_parts( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t * new_task );
KMP_EXPORT kmp_int32
__kmpc_omp_taskwait( ident_t *loc_ref, kmp_int32 gtid );

KMP_EXPORT kmp_int32
__kmpc_omp_taskyield( ident_t *loc_ref, kmp_int32 gtid, int end_part );

#if TASK_UNUSED
void __kmpc_omp_task_begin( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t * task );
void __kmpc_omp_task_complete( ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *task );
#endif // TASK_UNUSED

/* ------------------------------------------------------------------------ */

#if OMP_40_ENABLED

KMP_EXPORT void __kmpc_taskgroup( ident_t * loc, int gtid );
KMP_EXPORT void __kmpc_end_taskgroup( ident_t * loc, int gtid );

KMP_EXPORT kmp_int32 __kmpc_omp_task_with_deps(
    ident_t *loc_ref, kmp_int32 gtid, kmp_task_t *new_task, kmp_int32 ndeps,
    kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias,
    kmp_depend_info_t *noalias_dep_list);
KMP_EXPORT void __kmpc_omp_wait_deps(ident_t *loc_ref, kmp_int32 gtid,
                                     kmp_int32 ndeps,
                                     kmp_depend_info_t *dep_list,
                                     kmp_int32 ndeps_noalias,
                                     kmp_depend_info_t *noalias_dep_list);
extern void __kmp_release_deps(kmp_int32 gtid, kmp_taskdata_t *task);
extern void __kmp_dephash_free_entries(kmp_info_t *thread, kmp_dephash_t *h);
extern void __kmp_dephash_free(kmp_info_t *thread, kmp_dephash_t *h);

extern kmp_int32 __kmp_omp_task( kmp_int32 gtid, kmp_task_t * new_task, bool serialize_immediate );

KMP_EXPORT kmp_int32 __kmpc_cancel(ident_t* loc_ref, kmp_int32 gtid, kmp_int32 cncl_kind);
KMP_EXPORT kmp_int32 __kmpc_cancellationpoint(ident_t* loc_ref, kmp_int32 gtid, kmp_int32 cncl_kind);
KMP_EXPORT kmp_int32 __kmpc_cancel_barrier(ident_t* loc_ref, kmp_int32 gtid);
KMP_EXPORT int __kmp_get_cancellation_status(int cancel_kind);

#if OMP_45_ENABLED

KMP_EXPORT void __kmpc_proxy_task_completed( kmp_int32 gtid, kmp_task_t *ptask );
KMP_EXPORT void __kmpc_proxy_task_completed_ooo ( kmp_task_t *ptask );
KMP_EXPORT void __kmpc_taskloop(ident_t *loc, kmp_int32 gtid, kmp_task_t *task, kmp_int32 if_val,
                kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st,
                kmp_int32 nogroup, kmp_int32 sched, kmp_uint64 grainsize, void * task_dup );
#endif

#endif


/*
 * Lock interface routines (fast versions with gtid passed in)
 */
KMP_EXPORT void __kmpc_init_lock( ident_t *loc, kmp_int32 gtid,  void **user_lock );
KMP_EXPORT void __kmpc_init_nest_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT void __kmpc_destroy_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT void __kmpc_destroy_nest_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT void __kmpc_set_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT void __kmpc_set_nest_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT void __kmpc_unset_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT void __kmpc_unset_nest_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT int __kmpc_test_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );
KMP_EXPORT int __kmpc_test_nest_lock( ident_t *loc, kmp_int32 gtid, void **user_lock );

#if OMP_45_ENABLED
KMP_EXPORT void __kmpc_init_lock_with_hint( ident_t *loc, kmp_int32 gtid, void **user_lock, uintptr_t hint );
KMP_EXPORT void __kmpc_init_nest_lock_with_hint( ident_t *loc, kmp_int32 gtid, void **user_lock, uintptr_t hint );
#endif

/* ------------------------------------------------------------------------ */

/*
 * Interface to fast scalable reduce methods routines
 */

KMP_EXPORT kmp_int32 __kmpc_reduce_nowait( ident_t *loc, kmp_int32 global_tid,
                                           kmp_int32 num_vars, size_t reduce_size,
                                           void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data),
                                           kmp_critical_name *lck );
KMP_EXPORT void __kmpc_end_reduce_nowait( ident_t *loc, kmp_int32 global_tid, kmp_critical_name *lck );
KMP_EXPORT kmp_int32 __kmpc_reduce( ident_t *loc, kmp_int32 global_tid,
                                    kmp_int32 num_vars, size_t reduce_size,
                                    void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data),
                                    kmp_critical_name *lck );
KMP_EXPORT void __kmpc_end_reduce( ident_t *loc, kmp_int32 global_tid, kmp_critical_name *lck );

/*
 * internal fast reduction routines
 */

extern PACKED_REDUCTION_METHOD_T
__kmp_determine_reduction_method( ident_t *loc, kmp_int32 global_tid,
                                  kmp_int32 num_vars, size_t reduce_size,
                                  void *reduce_data, void (*reduce_func)(void *lhs_data, void *rhs_data),
                                  kmp_critical_name *lck );

// this function is for testing set/get/determine reduce method
KMP_EXPORT kmp_int32 __kmp_get_reduce_method( void );

KMP_EXPORT kmp_uint64 __kmpc_get_taskid();
KMP_EXPORT kmp_uint64 __kmpc_get_parent_taskid();

// this function exported for testing of KMP_PLACE_THREADS functionality
KMP_EXPORT void __kmpc_place_threads(int,int,int,int,int);

/* ------------------------------------------------------------------------ */
/* ------------------------------------------------------------------------ */

// C++ port
// missing 'extern "C"' declarations

KMP_EXPORT kmp_int32 __kmpc_in_parallel( ident_t *loc );
KMP_EXPORT void __kmpc_pop_num_threads(  ident_t *loc, kmp_int32 global_tid );
KMP_EXPORT void __kmpc_push_num_threads( ident_t *loc, kmp_int32 global_tid, kmp_int32 num_threads );

#if OMP_40_ENABLED
KMP_EXPORT void __kmpc_push_proc_bind( ident_t *loc, kmp_int32 global_tid, int proc_bind );
KMP_EXPORT void __kmpc_push_num_teams( ident_t *loc, kmp_int32 global_tid, kmp_int32 num_teams, kmp_int32 num_threads );
KMP_EXPORT void __kmpc_fork_teams(ident_t *loc, kmp_int32 argc, kmpc_micro microtask, ...);
#endif
#if OMP_45_ENABLED
struct kmp_dim {  // loop bounds info casted to kmp_int64
    kmp_int64 lo; // lower
    kmp_int64 up; // upper
    kmp_int64 st; // stride
};
KMP_EXPORT void __kmpc_doacross_init(ident_t *loc, kmp_int32 gtid, kmp_int32 num_dims, struct kmp_dim * dims);
KMP_EXPORT void __kmpc_doacross_wait(ident_t *loc, kmp_int32 gtid, kmp_int64 *vec);
KMP_EXPORT void __kmpc_doacross_post(ident_t *loc, kmp_int32 gtid, kmp_int64 *vec);
KMP_EXPORT void __kmpc_doacross_fini(ident_t *loc, kmp_int32 gtid);
#endif

KMP_EXPORT void*
__kmpc_threadprivate_cached( ident_t * loc, kmp_int32 global_tid,
                             void * data, size_t size, void *** cache );

// Symbols for MS mutual detection.
extern int _You_must_link_with_exactly_one_OpenMP_library;
extern int _You_must_link_with_Intel_OpenMP_library;
#if KMP_OS_WINDOWS && ( KMP_VERSION_MAJOR > 4 )
    extern int _You_must_link_with_Microsoft_OpenMP_library;
#endif


// The routines below are not exported.
// Consider making them 'static' in corresponding source files.
void
kmp_threadprivate_insert_private_data( int gtid, void *pc_addr, void *data_addr, size_t pc_size );
struct private_common *
kmp_threadprivate_insert( int gtid, void *pc_addr, void *data_addr, size_t pc_size );

//
// ompc_, kmpc_ entries moved from omp.h.
//
#if KMP_OS_WINDOWS
#   define KMPC_CONVENTION __cdecl
#else
#   define KMPC_CONVENTION
#endif

#ifndef __OMP_H
typedef enum omp_sched_t {
    omp_sched_static  = 1,
    omp_sched_dynamic = 2,
    omp_sched_guided  = 3,
    omp_sched_auto    = 4
} omp_sched_t;
typedef void * kmp_affinity_mask_t;
#endif

KMP_EXPORT void KMPC_CONVENTION ompc_set_max_active_levels(int);
KMP_EXPORT void KMPC_CONVENTION ompc_set_schedule(omp_sched_t, int);
KMP_EXPORT int  KMPC_CONVENTION ompc_get_ancestor_thread_num(int);
KMP_EXPORT int  KMPC_CONVENTION ompc_get_team_size(int);
KMP_EXPORT int  KMPC_CONVENTION kmpc_set_affinity_mask_proc(int, kmp_affinity_mask_t *);
KMP_EXPORT int  KMPC_CONVENTION kmpc_unset_affinity_mask_proc(int, kmp_affinity_mask_t *);
KMP_EXPORT int  KMPC_CONVENTION kmpc_get_affinity_mask_proc(int, kmp_affinity_mask_t *);

KMP_EXPORT void KMPC_CONVENTION kmpc_set_stacksize(int);
KMP_EXPORT void KMPC_CONVENTION kmpc_set_stacksize_s(size_t);
KMP_EXPORT void KMPC_CONVENTION kmpc_set_library(int);
KMP_EXPORT void KMPC_CONVENTION kmpc_set_defaults(char const *);
KMP_EXPORT void KMPC_CONVENTION kmpc_set_disp_num_buffers(int);

#ifdef __cplusplus
}
#endif

#endif /* KMP_H */