Clang-format and whitespace cleanup of source code
This patch contains the clang-format and cleanup of the entire code base. Some
of clang-formats changes made the code look worse in places. A best effort was
made to resolve the bulk of these problems, but many remain. Most of the
problems were mangling line-breaks and tabbing of comments.
Patch by Terry Wilmarth
Differential Revision: https://reviews.llvm.org/D32659
llvm-svn: 302929
diff --git a/openmp/runtime/src/z_Linux_util.cpp b/openmp/runtime/src/z_Linux_util.cpp
index 857b147..2f83c02 100644
--- a/openmp/runtime/src/z_Linux_util.cpp
+++ b/openmp/runtime/src/z_Linux_util.cpp
@@ -14,59 +14,56 @@
#include "kmp.h"
-#include "kmp_wrapper_getpid.h"
-#include "kmp_itt.h"
-#include "kmp_str.h"
-#include "kmp_i18n.h"
-#include "kmp_lock.h"
-#include "kmp_io.h"
-#include "kmp_stats.h"
-#include "kmp_wait_release.h"
#include "kmp_affinity.h"
+#include "kmp_i18n.h"
+#include "kmp_io.h"
+#include "kmp_itt.h"
+#include "kmp_lock.h"
+#include "kmp_stats.h"
+#include "kmp_str.h"
+#include "kmp_wait_release.h"
+#include "kmp_wrapper_getpid.h"
#if !KMP_OS_FREEBSD && !KMP_OS_NETBSD
-# include <alloca.h>
+#include <alloca.h>
#endif
-#include <unistd.h>
-#include <math.h> // HUGE_VAL.
-#include <sys/time.h>
-#include <sys/times.h>
+#include <math.h> // HUGE_VAL.
#include <sys/resource.h>
#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/times.h>
+#include <unistd.h>
#if KMP_OS_LINUX && !KMP_OS_CNK
-# include <sys/sysinfo.h>
-# if KMP_USE_FUTEX
-// We should really include <futex.h>, but that causes compatibility problems on different
-// Linux* OS distributions that either require that you include (or break when you try to include)
-// <pci/types.h>.
-// Since all we need is the two macros below (which are part of the kernel ABI, so can't change)
-// we just define the constants here and don't include <futex.h>
-# ifndef FUTEX_WAIT
-# define FUTEX_WAIT 0
-# endif
-# ifndef FUTEX_WAKE
-# define FUTEX_WAKE 1
-# endif
-# endif
+#include <sys/sysinfo.h>
+#if KMP_USE_FUTEX
+// We should really include <futex.h>, but that causes compatibility problems on
+// different Linux* OS distributions that either require that you include (or
+// break when you try to include) <pci/types.h>. Since all we need is the two
+// macros below (which are part of the kernel ABI, so can't change) we just
+// define the constants here and don't include <futex.h>
+#ifndef FUTEX_WAIT
+#define FUTEX_WAIT 0
+#endif
+#ifndef FUTEX_WAKE
+#define FUTEX_WAKE 1
+#endif
+#endif
#elif KMP_OS_DARWIN
-# include <sys/sysctl.h>
-# include <mach/mach.h>
+#include <mach/mach.h>
+#include <sys/sysctl.h>
#elif KMP_OS_FREEBSD
-# include <pthread_np.h>
+#include <pthread_np.h>
#endif
-#include <dirent.h>
#include <ctype.h>
+#include <dirent.h>
#include <fcntl.h>
#include "tsan_annotations.h"
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
struct kmp_sys_timer {
- struct timespec start;
+ struct timespec start;
};
// Convert timespec to nanoseconds.
@@ -75,2444 +72,2229 @@
static struct kmp_sys_timer __kmp_sys_timer_data;
#if KMP_HANDLE_SIGNALS
- typedef void (* sig_func_t )( int );
- STATIC_EFI2_WORKAROUND struct sigaction __kmp_sighldrs[ NSIG ];
- static sigset_t __kmp_sigset;
+typedef void (*sig_func_t)(int);
+STATIC_EFI2_WORKAROUND struct sigaction __kmp_sighldrs[NSIG];
+static sigset_t __kmp_sigset;
#endif
-static int __kmp_init_runtime = FALSE;
+static int __kmp_init_runtime = FALSE;
static int __kmp_fork_count = 0;
-static pthread_condattr_t __kmp_suspend_cond_attr;
+static pthread_condattr_t __kmp_suspend_cond_attr;
static pthread_mutexattr_t __kmp_suspend_mutex_attr;
-static kmp_cond_align_t __kmp_wait_cv;
-static kmp_mutex_align_t __kmp_wait_mx;
+static kmp_cond_align_t __kmp_wait_cv;
+static kmp_mutex_align_t __kmp_wait_mx;
kmp_uint64 __kmp_ticks_per_msec = 1000000;
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
#ifdef DEBUG_SUSPEND
-static void
-__kmp_print_cond( char *buffer, kmp_cond_align_t *cond )
-{
- KMP_SNPRINTF( buffer, 128, "(cond (lock (%ld, %d)), (descr (%p)))",
- cond->c_cond.__c_lock.__status, cond->c_cond.__c_lock.__spinlock,
- cond->c_cond.__c_waiting );
+static void __kmp_print_cond(char *buffer, kmp_cond_align_t *cond) {
+ KMP_SNPRINTF(buffer, 128, "(cond (lock (%ld, %d)), (descr (%p)))",
+ cond->c_cond.__c_lock.__status, cond->c_cond.__c_lock.__spinlock,
+ cond->c_cond.__c_waiting);
}
#endif
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
+#if (KMP_OS_LINUX && KMP_AFFINITY_SUPPORTED)
-#if ( KMP_OS_LINUX && KMP_AFFINITY_SUPPORTED)
+/* Affinity support */
-/*
- * Affinity support
- */
+void __kmp_affinity_bind_thread(int which) {
+ KMP_ASSERT2(KMP_AFFINITY_CAPABLE(),
+ "Illegal set affinity operation when not capable");
-void
-__kmp_affinity_bind_thread( int which )
-{
- KMP_ASSERT2(KMP_AFFINITY_CAPABLE(),
- "Illegal set affinity operation when not capable");
-
- kmp_affin_mask_t *mask;
- KMP_CPU_ALLOC_ON_STACK(mask);
- KMP_CPU_ZERO(mask);
- KMP_CPU_SET(which, mask);
- __kmp_set_system_affinity(mask, TRUE);
- KMP_CPU_FREE_FROM_STACK(mask);
+ kmp_affin_mask_t *mask;
+ KMP_CPU_ALLOC_ON_STACK(mask);
+ KMP_CPU_ZERO(mask);
+ KMP_CPU_SET(which, mask);
+ __kmp_set_system_affinity(mask, TRUE);
+ KMP_CPU_FREE_FROM_STACK(mask);
}
-/*
- * Determine if we can access affinity functionality on this version of
+/* Determine if we can access affinity functionality on this version of
* Linux* OS by checking __NR_sched_{get,set}affinity system calls, and set
- * __kmp_affin_mask_size to the appropriate value (0 means not capable).
- */
-void
-__kmp_affinity_determine_capable(const char *env_var)
-{
+ * __kmp_affin_mask_size to the appropriate value (0 means not capable). */
+void __kmp_affinity_determine_capable(const char *env_var) {
+// Check and see if the OS supports thread affinity.
+
+#define KMP_CPU_SET_SIZE_LIMIT (1024 * 1024)
+
+ int gCode;
+ int sCode;
+ unsigned char *buf;
+ buf = (unsigned char *)KMP_INTERNAL_MALLOC(KMP_CPU_SET_SIZE_LIMIT);
+
+ // If Linux* OS:
+ // If the syscall fails or returns a suggestion for the size,
+ // then we don't have to search for an appropriate size.
+ gCode = syscall(__NR_sched_getaffinity, 0, KMP_CPU_SET_SIZE_LIMIT, buf);
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "initial getaffinity call returned %d errno = %d\n",
+ gCode, errno));
+
+ // if ((gCode < 0) && (errno == ENOSYS))
+ if (gCode < 0) {
+ // System call not supported
+ if (__kmp_affinity_verbose ||
+ (__kmp_affinity_warnings && (__kmp_affinity_type != affinity_none) &&
+ (__kmp_affinity_type != affinity_default) &&
+ (__kmp_affinity_type != affinity_disabled))) {
+ int error = errno;
+ kmp_msg_t err_code = KMP_ERR(error);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(GetAffSysCallNotSupported, env_var),
+ err_code, __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
+ }
+ KMP_AFFINITY_DISABLE();
+ KMP_INTERNAL_FREE(buf);
+ return;
+ }
+ if (gCode > 0) { // Linux* OS only
+ // The optimal situation: the OS returns the size of the buffer it expects.
//
- // Check and see if the OS supports thread affinity.
- //
+ // A verification of correct behavior is that Isetaffinity on a NULL
+ // buffer with the same size fails with errno set to EFAULT.
+ sCode = syscall(__NR_sched_setaffinity, 0, gCode, NULL);
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "setaffinity for mask size %d returned %d errno = %d\n",
+ gCode, sCode, errno));
+ if (sCode < 0) {
+ if (errno == ENOSYS) {
+ if (__kmp_affinity_verbose ||
+ (__kmp_affinity_warnings &&
+ (__kmp_affinity_type != affinity_none) &&
+ (__kmp_affinity_type != affinity_default) &&
+ (__kmp_affinity_type != affinity_disabled))) {
+ int error = errno;
+ kmp_msg_t err_code = KMP_ERR(error);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(SetAffSysCallNotSupported, env_var),
+ err_code, __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
+ }
+ KMP_AFFINITY_DISABLE();
+ KMP_INTERNAL_FREE(buf);
+ }
+ if (errno == EFAULT) {
+ KMP_AFFINITY_ENABLE(gCode);
+ KA_TRACE(10, ("__kmp_affinity_determine_capable: "
+ "affinity supported (mask size %d)\n",
+ (int)__kmp_affin_mask_size));
+ KMP_INTERNAL_FREE(buf);
+ return;
+ }
+ }
+ }
-# define KMP_CPU_SET_SIZE_LIMIT (1024*1024)
+ // Call the getaffinity system call repeatedly with increasing set sizes
+ // until we succeed, or reach an upper bound on the search.
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "searching for proper set size\n"));
+ int size;
+ for (size = 1; size <= KMP_CPU_SET_SIZE_LIMIT; size *= 2) {
+ gCode = syscall(__NR_sched_getaffinity, 0, size, buf);
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "getaffinity for mask size %d returned %d errno = %d\n",
+ size, gCode, errno));
- int gCode;
- int sCode;
- unsigned char *buf;
- buf = ( unsigned char * ) KMP_INTERNAL_MALLOC( KMP_CPU_SET_SIZE_LIMIT );
-
- // If Linux* OS:
- // If the syscall fails or returns a suggestion for the size,
- // then we don't have to search for an appropriate size.
- gCode = syscall( __NR_sched_getaffinity, 0, KMP_CPU_SET_SIZE_LIMIT, buf );
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "initial getaffinity call returned %d errno = %d\n",
- gCode, errno));
-
- //if ((gCode < 0) && (errno == ENOSYS))
if (gCode < 0) {
- //
- // System call not supported
- //
- if (__kmp_affinity_verbose || (__kmp_affinity_warnings
- && (__kmp_affinity_type != affinity_none)
- && (__kmp_affinity_type != affinity_default)
- && (__kmp_affinity_type != affinity_disabled))) {
- int error = errno;
- kmp_msg_t err_code = KMP_ERR( error );
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( GetAffSysCallNotSupported, env_var ),
- err_code,
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
+ if (errno == ENOSYS) {
+ // We shouldn't get here
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "inconsistent OS call behavior: errno == ENOSYS for mask "
+ "size %d\n",
+ size));
+ if (__kmp_affinity_verbose ||
+ (__kmp_affinity_warnings &&
+ (__kmp_affinity_type != affinity_none) &&
+ (__kmp_affinity_type != affinity_default) &&
+ (__kmp_affinity_type != affinity_disabled))) {
+ int error = errno;
+ kmp_msg_t err_code = KMP_ERR(error);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(GetAffSysCallNotSupported, env_var),
+ err_code, __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
}
KMP_AFFINITY_DISABLE();
KMP_INTERNAL_FREE(buf);
return;
+ }
+ continue;
}
- if (gCode > 0) { // Linux* OS only
- // The optimal situation: the OS returns the size of the buffer
- // it expects.
- //
- // A verification of correct behavior is that Isetaffinity on a NULL
- // buffer with the same size fails with errno set to EFAULT.
- sCode = syscall( __NR_sched_setaffinity, 0, gCode, NULL );
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "setaffinity for mask size %d returned %d errno = %d\n",
- gCode, sCode, errno));
- if (sCode < 0) {
- if (errno == ENOSYS) {
- if (__kmp_affinity_verbose || (__kmp_affinity_warnings
- && (__kmp_affinity_type != affinity_none)
- && (__kmp_affinity_type != affinity_default)
- && (__kmp_affinity_type != affinity_disabled))) {
- int error = errno;
- kmp_msg_t err_code = KMP_ERR( error );
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( SetAffSysCallNotSupported, env_var ),
- err_code,
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }
- KMP_AFFINITY_DISABLE();
- KMP_INTERNAL_FREE(buf);
- }
- if (errno == EFAULT) {
- KMP_AFFINITY_ENABLE(gCode);
- KA_TRACE(10, ( "__kmp_affinity_determine_capable: "
- "affinity supported (mask size %d)\n",
- (int)__kmp_affin_mask_size));
- KMP_INTERNAL_FREE(buf);
- return;
- }
+
+ sCode = syscall(__NR_sched_setaffinity, 0, gCode, NULL);
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "setaffinity for mask size %d returned %d errno = %d\n",
+ gCode, sCode, errno));
+ if (sCode < 0) {
+ if (errno == ENOSYS) { // Linux* OS only
+ // We shouldn't get here
+ KA_TRACE(30, ("__kmp_affinity_determine_capable: "
+ "inconsistent OS call behavior: errno == ENOSYS for mask "
+ "size %d\n",
+ size));
+ if (__kmp_affinity_verbose ||
+ (__kmp_affinity_warnings &&
+ (__kmp_affinity_type != affinity_none) &&
+ (__kmp_affinity_type != affinity_default) &&
+ (__kmp_affinity_type != affinity_disabled))) {
+ int error = errno;
+ kmp_msg_t err_code = KMP_ERR(error);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(SetAffSysCallNotSupported, env_var),
+ err_code, __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
}
+ KMP_AFFINITY_DISABLE();
+ KMP_INTERNAL_FREE(buf);
+ return;
+ }
+ if (errno == EFAULT) {
+ KMP_AFFINITY_ENABLE(gCode);
+ KA_TRACE(10, ("__kmp_affinity_determine_capable: "
+ "affinity supported (mask size %d)\n",
+ (int)__kmp_affin_mask_size));
+ KMP_INTERNAL_FREE(buf);
+ return;
+ }
}
+ }
+ // save uncaught error code
+ // int error = errno;
+ KMP_INTERNAL_FREE(buf);
+ // restore uncaught error code, will be printed at the next KMP_WARNING below
+ // errno = error;
- //
- // Call the getaffinity system call repeatedly with increasing set sizes
- // until we succeed, or reach an upper bound on the search.
- //
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "searching for proper set size\n"));
- int size;
- for (size = 1; size <= KMP_CPU_SET_SIZE_LIMIT; size *= 2) {
- gCode = syscall( __NR_sched_getaffinity, 0, size, buf );
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "getaffinity for mask size %d returned %d errno = %d\n", size,
- gCode, errno));
-
- if (gCode < 0) {
- if ( errno == ENOSYS )
- {
- //
- // We shouldn't get here
- //
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "inconsistent OS call behavior: errno == ENOSYS for mask size %d\n",
- size));
- if (__kmp_affinity_verbose || (__kmp_affinity_warnings
- && (__kmp_affinity_type != affinity_none)
- && (__kmp_affinity_type != affinity_default)
- && (__kmp_affinity_type != affinity_disabled))) {
- int error = errno;
- kmp_msg_t err_code = KMP_ERR( error );
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( GetAffSysCallNotSupported, env_var ),
- err_code,
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }
- KMP_AFFINITY_DISABLE();
- KMP_INTERNAL_FREE(buf);
- return;
- }
- continue;
- }
-
- sCode = syscall( __NR_sched_setaffinity, 0, gCode, NULL );
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "setaffinity for mask size %d returned %d errno = %d\n",
- gCode, sCode, errno));
- if (sCode < 0) {
- if (errno == ENOSYS) { // Linux* OS only
- //
- // We shouldn't get here
- //
- KA_TRACE(30, ( "__kmp_affinity_determine_capable: "
- "inconsistent OS call behavior: errno == ENOSYS for mask size %d\n",
- size));
- if (__kmp_affinity_verbose || (__kmp_affinity_warnings
- && (__kmp_affinity_type != affinity_none)
- && (__kmp_affinity_type != affinity_default)
- && (__kmp_affinity_type != affinity_disabled))) {
- int error = errno;
- kmp_msg_t err_code = KMP_ERR( error );
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( SetAffSysCallNotSupported, env_var ),
- err_code,
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }
- KMP_AFFINITY_DISABLE();
- KMP_INTERNAL_FREE(buf);
- return;
- }
- if (errno == EFAULT) {
- KMP_AFFINITY_ENABLE(gCode);
- KA_TRACE(10, ( "__kmp_affinity_determine_capable: "
- "affinity supported (mask size %d)\n",
- (int)__kmp_affin_mask_size));
- KMP_INTERNAL_FREE(buf);
- return;
- }
- }
- }
- //int error = errno; // save uncaught error code
- KMP_INTERNAL_FREE(buf);
- // errno = error; // restore uncaught error code, will be printed at the next KMP_WARNING below
-
- //
- // Affinity is not supported
- //
- KMP_AFFINITY_DISABLE();
- KA_TRACE(10, ( "__kmp_affinity_determine_capable: "
- "cannot determine mask size - affinity not supported\n"));
- if (__kmp_affinity_verbose || (__kmp_affinity_warnings
- && (__kmp_affinity_type != affinity_none)
- && (__kmp_affinity_type != affinity_default)
- && (__kmp_affinity_type != affinity_disabled))) {
- KMP_WARNING( AffCantGetMaskSize, env_var );
- }
+ // Affinity is not supported
+ KMP_AFFINITY_DISABLE();
+ KA_TRACE(10, ("__kmp_affinity_determine_capable: "
+ "cannot determine mask size - affinity not supported\n"));
+ if (__kmp_affinity_verbose ||
+ (__kmp_affinity_warnings && (__kmp_affinity_type != affinity_none) &&
+ (__kmp_affinity_type != affinity_default) &&
+ (__kmp_affinity_type != affinity_disabled))) {
+ KMP_WARNING(AffCantGetMaskSize, env_var);
+ }
}
#endif // KMP_OS_LINUX && KMP_AFFINITY_SUPPORTED
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
#if KMP_USE_FUTEX
-int
-__kmp_futex_determine_capable()
-{
- int loc = 0;
- int rc = syscall( __NR_futex, &loc, FUTEX_WAKE, 1, NULL, NULL, 0 );
- int retval = ( rc == 0 ) || ( errno != ENOSYS );
+int __kmp_futex_determine_capable() {
+ int loc = 0;
+ int rc = syscall(__NR_futex, &loc, FUTEX_WAKE, 1, NULL, NULL, 0);
+ int retval = (rc == 0) || (errno != ENOSYS);
- KA_TRACE(10, ( "__kmp_futex_determine_capable: rc = %d errno = %d\n", rc,
- errno ) );
- KA_TRACE(10, ( "__kmp_futex_determine_capable: futex syscall%s supported\n",
- retval ? "" : " not" ) );
+ KA_TRACE(10,
+ ("__kmp_futex_determine_capable: rc = %d errno = %d\n", rc, errno));
+ KA_TRACE(10, ("__kmp_futex_determine_capable: futex syscall%s supported\n",
+ retval ? "" : " not"));
- return retval;
+ return retval;
}
#endif // KMP_USE_FUTEX
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
+#if (KMP_ARCH_X86 || KMP_ARCH_X86_64) && (!KMP_ASM_INTRINS)
+/* Only 32-bit "add-exchange" instruction on IA-32 architecture causes us to
+ use compare_and_store for these routines */
-#if (KMP_ARCH_X86 || KMP_ARCH_X86_64) && (! KMP_ASM_INTRINS)
-/*
- * Only 32-bit "add-exchange" instruction on IA-32 architecture causes us to
- * use compare_and_store for these routines
- */
+kmp_int8 __kmp_test_then_or8(volatile kmp_int8 *p, kmp_int8 d) {
+ kmp_int8 old_value, new_value;
-kmp_int8
-__kmp_test_then_or8( volatile kmp_int8 *p, kmp_int8 d )
-{
- kmp_int8 old_value, new_value;
+ old_value = TCR_1(*p);
+ new_value = old_value | d;
- old_value = TCR_1( *p );
+ while (!KMP_COMPARE_AND_STORE_REL8(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_1(*p);
new_value = old_value | d;
-
- while ( ! KMP_COMPARE_AND_STORE_REL8 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_1( *p );
- new_value = old_value | d;
- }
- return old_value;
+ }
+ return old_value;
}
-kmp_int8
-__kmp_test_then_and8( volatile kmp_int8 *p, kmp_int8 d )
-{
- kmp_int8 old_value, new_value;
+kmp_int8 __kmp_test_then_and8(volatile kmp_int8 *p, kmp_int8 d) {
+ kmp_int8 old_value, new_value;
- old_value = TCR_1( *p );
+ old_value = TCR_1(*p);
+ new_value = old_value & d;
+
+ while (!KMP_COMPARE_AND_STORE_REL8(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_1(*p);
new_value = old_value & d;
-
- while ( ! KMP_COMPARE_AND_STORE_REL8 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_1( *p );
- new_value = old_value & d;
- }
- return old_value;
+ }
+ return old_value;
}
-kmp_int32
-__kmp_test_then_or32( volatile kmp_int32 *p, kmp_int32 d )
-{
- kmp_int32 old_value, new_value;
+kmp_int32 __kmp_test_then_or32(volatile kmp_int32 *p, kmp_int32 d) {
+ kmp_int32 old_value, new_value;
- old_value = TCR_4( *p );
+ old_value = TCR_4(*p);
+ new_value = old_value | d;
+
+ while (!KMP_COMPARE_AND_STORE_REL32(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_4(*p);
new_value = old_value | d;
-
- while ( ! KMP_COMPARE_AND_STORE_REL32 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_4( *p );
- new_value = old_value | d;
- }
- return old_value;
+ }
+ return old_value;
}
-kmp_int32
-__kmp_test_then_and32( volatile kmp_int32 *p, kmp_int32 d )
-{
- kmp_int32 old_value, new_value;
+kmp_int32 __kmp_test_then_and32(volatile kmp_int32 *p, kmp_int32 d) {
+ kmp_int32 old_value, new_value;
- old_value = TCR_4( *p );
+ old_value = TCR_4(*p);
+ new_value = old_value & d;
+
+ while (!KMP_COMPARE_AND_STORE_REL32(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_4(*p);
new_value = old_value & d;
-
- while ( ! KMP_COMPARE_AND_STORE_REL32 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_4( *p );
- new_value = old_value & d;
- }
- return old_value;
+ }
+ return old_value;
}
-# if KMP_ARCH_X86
-kmp_int8
-__kmp_test_then_add8( volatile kmp_int8 *p, kmp_int8 d )
-{
- kmp_int8 old_value, new_value;
+#if KMP_ARCH_X86
+kmp_int8 __kmp_test_then_add8(volatile kmp_int8 *p, kmp_int8 d) {
+ kmp_int8 old_value, new_value;
- old_value = TCR_1( *p );
+ old_value = TCR_1(*p);
+ new_value = old_value + d;
+
+ while (!KMP_COMPARE_AND_STORE_REL8(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_1(*p);
new_value = old_value + d;
-
- while ( ! KMP_COMPARE_AND_STORE_REL8 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_1( *p );
- new_value = old_value + d;
- }
- return old_value;
+ }
+ return old_value;
}
-kmp_int64
-__kmp_test_then_add64( volatile kmp_int64 *p, kmp_int64 d )
-{
- kmp_int64 old_value, new_value;
+kmp_int64 __kmp_test_then_add64(volatile kmp_int64 *p, kmp_int64 d) {
+ kmp_int64 old_value, new_value;
- old_value = TCR_8( *p );
+ old_value = TCR_8(*p);
+ new_value = old_value + d;
+
+ while (!KMP_COMPARE_AND_STORE_REL64(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_8(*p);
new_value = old_value + d;
-
- while ( ! KMP_COMPARE_AND_STORE_REL64 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_8( *p );
- new_value = old_value + d;
- }
- return old_value;
+ }
+ return old_value;
}
-# endif /* KMP_ARCH_X86 */
+#endif /* KMP_ARCH_X86 */
-kmp_int64
-__kmp_test_then_or64( volatile kmp_int64 *p, kmp_int64 d )
-{
- kmp_int64 old_value, new_value;
+kmp_int64 __kmp_test_then_or64(volatile kmp_int64 *p, kmp_int64 d) {
+ kmp_int64 old_value, new_value;
- old_value = TCR_8( *p );
+ old_value = TCR_8(*p);
+ new_value = old_value | d;
+ while (!KMP_COMPARE_AND_STORE_REL64(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_8(*p);
new_value = old_value | d;
- while ( ! KMP_COMPARE_AND_STORE_REL64 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_8( *p );
- new_value = old_value | d;
- }
- return old_value;
+ }
+ return old_value;
}
-kmp_int64
-__kmp_test_then_and64( volatile kmp_int64 *p, kmp_int64 d )
-{
- kmp_int64 old_value, new_value;
+kmp_int64 __kmp_test_then_and64(volatile kmp_int64 *p, kmp_int64 d) {
+ kmp_int64 old_value, new_value;
- old_value = TCR_8( *p );
+ old_value = TCR_8(*p);
+ new_value = old_value & d;
+ while (!KMP_COMPARE_AND_STORE_REL64(p, old_value, new_value)) {
+ KMP_CPU_PAUSE();
+ old_value = TCR_8(*p);
new_value = old_value & d;
- while ( ! KMP_COMPARE_AND_STORE_REL64 ( p, old_value, new_value ) )
- {
- KMP_CPU_PAUSE();
- old_value = TCR_8( *p );
- new_value = old_value & d;
- }
- return old_value;
+ }
+ return old_value;
}
#endif /* (KMP_ARCH_X86 || KMP_ARCH_X86_64) && (! KMP_ASM_INTRINS) */
-void
-__kmp_terminate_thread( int gtid )
-{
- int status;
- kmp_info_t *th = __kmp_threads[ gtid ];
+void __kmp_terminate_thread(int gtid) {
+ int status;
+ kmp_info_t *th = __kmp_threads[gtid];
- if ( !th ) return;
+ if (!th)
+ return;
- #ifdef KMP_CANCEL_THREADS
- KA_TRACE( 10, ("__kmp_terminate_thread: kill (%d)\n", gtid ) );
- status = pthread_cancel( th->th.th_info.ds.ds_thread );
- if ( status != 0 && status != ESRCH ) {
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( CantTerminateWorkerThread ),
- KMP_ERR( status ),
- __kmp_msg_null
- );
- }; // if
- #endif
- __kmp_yield( TRUE );
+#ifdef KMP_CANCEL_THREADS
+ KA_TRACE(10, ("__kmp_terminate_thread: kill (%d)\n", gtid));
+ status = pthread_cancel(th->th.th_info.ds.ds_thread);
+ if (status != 0 && status != ESRCH) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantTerminateWorkerThread), KMP_ERR(status),
+ __kmp_msg_null);
+ }; // if
+#endif
+ __kmp_yield(TRUE);
} //
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-/*
- * Set thread stack info according to values returned by
- * pthread_getattr_np().
- * If values are unreasonable, assume call failed and use
- * incremental stack refinement method instead.
- * Returns TRUE if the stack parameters could be determined exactly,
- * FALSE if incremental refinement is necessary.
- */
-static kmp_int32
-__kmp_set_stack_info( int gtid, kmp_info_t *th )
-{
- int stack_data;
+/* Set thread stack info according to values returned by pthread_getattr_np().
+ If values are unreasonable, assume call failed and use incremental stack
+ refinement method instead. Returns TRUE if the stack parameters could be
+ determined exactly, FALSE if incremental refinement is necessary. */
+static kmp_int32 __kmp_set_stack_info(int gtid, kmp_info_t *th) {
+ int stack_data;
#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
- /* Linux* OS only -- no pthread_getattr_np support on OS X* */
- pthread_attr_t attr;
- int status;
- size_t size = 0;
- void * addr = 0;
+ /* Linux* OS only -- no pthread_getattr_np support on OS X* */
+ pthread_attr_t attr;
+ int status;
+ size_t size = 0;
+ void *addr = 0;
- /* Always do incremental stack refinement for ubermaster threads since the initial
- thread stack range can be reduced by sibling thread creation so pthread_attr_getstack
- may cause thread gtid aliasing */
- if ( ! KMP_UBER_GTID(gtid) ) {
+ /* Always do incremental stack refinement for ubermaster threads since the
+ initial thread stack range can be reduced by sibling thread creation so
+ pthread_attr_getstack may cause thread gtid aliasing */
+ if (!KMP_UBER_GTID(gtid)) {
- /* Fetch the real thread attributes */
- status = pthread_attr_init( &attr );
- KMP_CHECK_SYSFAIL( "pthread_attr_init", status );
+ /* Fetch the real thread attributes */
+ status = pthread_attr_init(&attr);
+ KMP_CHECK_SYSFAIL("pthread_attr_init", status);
#if KMP_OS_FREEBSD || KMP_OS_NETBSD
- status = pthread_attr_get_np( pthread_self(), &attr );
- KMP_CHECK_SYSFAIL( "pthread_attr_get_np", status );
+ status = pthread_attr_get_np(pthread_self(), &attr);
+ KMP_CHECK_SYSFAIL("pthread_attr_get_np", status);
#else
- status = pthread_getattr_np( pthread_self(), &attr );
- KMP_CHECK_SYSFAIL( "pthread_getattr_np", status );
+ status = pthread_getattr_np(pthread_self(), &attr);
+ KMP_CHECK_SYSFAIL("pthread_getattr_np", status);
#endif
- status = pthread_attr_getstack( &attr, &addr, &size );
- KMP_CHECK_SYSFAIL( "pthread_attr_getstack", status );
- KA_TRACE( 60, ( "__kmp_set_stack_info: T#%d pthread_attr_getstack returned size: %lu, "
- "low addr: %p\n",
- gtid, size, addr ));
+ status = pthread_attr_getstack(&attr, &addr, &size);
+ KMP_CHECK_SYSFAIL("pthread_attr_getstack", status);
+ KA_TRACE(60,
+ ("__kmp_set_stack_info: T#%d pthread_attr_getstack returned size:"
+ " %lu, low addr: %p\n",
+ gtid, size, addr));
+ status = pthread_attr_destroy(&attr);
+ KMP_CHECK_SYSFAIL("pthread_attr_destroy", status);
+ }
- status = pthread_attr_destroy( &attr );
- KMP_CHECK_SYSFAIL( "pthread_attr_destroy", status );
- }
-
- if ( size != 0 && addr != 0 ) { /* was stack parameter determination successful? */
- /* Store the correct base and size */
- TCW_PTR(th->th.th_info.ds.ds_stackbase, (((char *)addr) + size));
- TCW_PTR(th->th.th_info.ds.ds_stacksize, size);
- TCW_4(th->th.th_info.ds.ds_stackgrow, FALSE);
- return TRUE;
- }
+ if (size != 0 && addr != 0) { // was stack parameter determination successful?
+ /* Store the correct base and size */
+ TCW_PTR(th->th.th_info.ds.ds_stackbase, (((char *)addr) + size));
+ TCW_PTR(th->th.th_info.ds.ds_stacksize, size);
+ TCW_4(th->th.th_info.ds.ds_stackgrow, FALSE);
+ return TRUE;
+ }
#endif /* KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD */
- /* Use incremental refinement starting from initial conservative estimate */
- TCW_PTR(th->th.th_info.ds.ds_stacksize, 0);
- TCW_PTR(th -> th.th_info.ds.ds_stackbase, &stack_data);
- TCW_4(th->th.th_info.ds.ds_stackgrow, TRUE);
- return FALSE;
+ /* Use incremental refinement starting from initial conservative estimate */
+ TCW_PTR(th->th.th_info.ds.ds_stacksize, 0);
+ TCW_PTR(th->th.th_info.ds.ds_stackbase, &stack_data);
+ TCW_4(th->th.th_info.ds.ds_stackgrow, TRUE);
+ return FALSE;
}
-static void*
-__kmp_launch_worker( void *thr )
-{
- int status, old_type, old_state;
+static void *__kmp_launch_worker(void *thr) {
+ int status, old_type, old_state;
#ifdef KMP_BLOCK_SIGNALS
- sigset_t new_set, old_set;
+ sigset_t new_set, old_set;
#endif /* KMP_BLOCK_SIGNALS */
- void *exit_val;
+ void *exit_val;
#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
- void * volatile padding = 0;
+ void *volatile padding = 0;
#endif
- int gtid;
+ int gtid;
- gtid = ((kmp_info_t*)thr) -> th.th_info.ds.ds_gtid;
- __kmp_gtid_set_specific( gtid );
+ gtid = ((kmp_info_t *)thr)->th.th_info.ds.ds_gtid;
+ __kmp_gtid_set_specific(gtid);
#ifdef KMP_TDATA_GTID
- __kmp_gtid = gtid;
+ __kmp_gtid = gtid;
#endif
#if KMP_STATS_ENABLED
- // set __thread local index to point to thread-specific stats
- __kmp_stats_thread_ptr = ((kmp_info_t*)thr)->th.th_stats;
- KMP_START_EXPLICIT_TIMER(OMP_worker_thread_life);
- KMP_SET_THREAD_STATE(IDLE);
- KMP_INIT_PARTITIONED_TIMERS(OMP_idle);
+ // set __thread local index to point to thread-specific stats
+ __kmp_stats_thread_ptr = ((kmp_info_t *)thr)->th.th_stats;
+ KMP_START_EXPLICIT_TIMER(OMP_worker_thread_life);
+ KMP_SET_THREAD_STATE(IDLE);
+ KMP_INIT_PARTITIONED_TIMERS(OMP_idle);
#endif
#if USE_ITT_BUILD
- __kmp_itt_thread_name( gtid );
+ __kmp_itt_thread_name(gtid);
#endif /* USE_ITT_BUILD */
#if KMP_AFFINITY_SUPPORTED
- __kmp_affinity_set_init_mask( gtid, FALSE );
+ __kmp_affinity_set_init_mask(gtid, FALSE);
#endif
#ifdef KMP_CANCEL_THREADS
- status = pthread_setcanceltype( PTHREAD_CANCEL_ASYNCHRONOUS, & old_type );
- KMP_CHECK_SYSFAIL( "pthread_setcanceltype", status );
- /* josh todo: isn't PTHREAD_CANCEL_ENABLE default for newly-created threads? */
- status = pthread_setcancelstate( PTHREAD_CANCEL_ENABLE, & old_state );
- KMP_CHECK_SYSFAIL( "pthread_setcancelstate", status );
+ status = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old_type);
+ KMP_CHECK_SYSFAIL("pthread_setcanceltype", status);
+ // josh todo: isn't PTHREAD_CANCEL_ENABLE default for newly-created threads?
+ status = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_state);
+ KMP_CHECK_SYSFAIL("pthread_setcancelstate", status);
#endif
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
- //
- // Set the FP control regs to be a copy of
- // the parallel initialization thread's.
- //
- __kmp_clear_x87_fpu_status_word();
- __kmp_load_x87_fpu_control_word( &__kmp_init_x87_fpu_control_word );
- __kmp_load_mxcsr( &__kmp_init_mxcsr );
+ // Set FP control regs to be a copy of the parallel initialization thread's.
+ __kmp_clear_x87_fpu_status_word();
+ __kmp_load_x87_fpu_control_word(&__kmp_init_x87_fpu_control_word);
+ __kmp_load_mxcsr(&__kmp_init_mxcsr);
#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
#ifdef KMP_BLOCK_SIGNALS
- status = sigfillset( & new_set );
- KMP_CHECK_SYSFAIL_ERRNO( "sigfillset", status );
- status = pthread_sigmask( SIG_BLOCK, & new_set, & old_set );
- KMP_CHECK_SYSFAIL( "pthread_sigmask", status );
+ status = sigfillset(&new_set);
+ KMP_CHECK_SYSFAIL_ERRNO("sigfillset", status);
+ status = pthread_sigmask(SIG_BLOCK, &new_set, &old_set);
+ KMP_CHECK_SYSFAIL("pthread_sigmask", status);
#endif /* KMP_BLOCK_SIGNALS */
#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
- if ( __kmp_stkoffset > 0 && gtid > 0 ) {
- padding = KMP_ALLOCA( gtid * __kmp_stkoffset );
- }
+ if (__kmp_stkoffset > 0 && gtid > 0) {
+ padding = KMP_ALLOCA(gtid * __kmp_stkoffset);
+ }
#endif
- KMP_MB();
- __kmp_set_stack_info( gtid, (kmp_info_t*)thr );
+ KMP_MB();
+ __kmp_set_stack_info(gtid, (kmp_info_t *)thr);
- __kmp_check_stack_overlap( (kmp_info_t*)thr );
+ __kmp_check_stack_overlap((kmp_info_t *)thr);
- exit_val = __kmp_launch_thread( (kmp_info_t *) thr );
+ exit_val = __kmp_launch_thread((kmp_info_t *)thr);
#ifdef KMP_BLOCK_SIGNALS
- status = pthread_sigmask( SIG_SETMASK, & old_set, NULL );
- KMP_CHECK_SYSFAIL( "pthread_sigmask", status );
+ status = pthread_sigmask(SIG_SETMASK, &old_set, NULL);
+ KMP_CHECK_SYSFAIL("pthread_sigmask", status);
#endif /* KMP_BLOCK_SIGNALS */
- return exit_val;
+ return exit_val;
}
#if KMP_USE_MONITOR
/* The monitor thread controls all of the threads in the complex */
-static void*
-__kmp_launch_monitor( void *thr )
-{
- int status, old_type, old_state;
+static void *__kmp_launch_monitor(void *thr) {
+ int status, old_type, old_state;
#ifdef KMP_BLOCK_SIGNALS
- sigset_t new_set;
+ sigset_t new_set;
#endif /* KMP_BLOCK_SIGNALS */
- struct timespec interval;
- int yield_count;
- int yield_cycles = 0;
+ struct timespec interval;
+ int yield_count;
+ int yield_cycles = 0;
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
- KA_TRACE( 10, ("__kmp_launch_monitor: #1 launched\n" ) );
+ KA_TRACE(10, ("__kmp_launch_monitor: #1 launched\n"));
- /* register us as the monitor thread */
- __kmp_gtid_set_specific( KMP_GTID_MONITOR );
+ /* register us as the monitor thread */
+ __kmp_gtid_set_specific(KMP_GTID_MONITOR);
#ifdef KMP_TDATA_GTID
- __kmp_gtid = KMP_GTID_MONITOR;
+ __kmp_gtid = KMP_GTID_MONITOR;
#endif
- KMP_MB();
+ KMP_MB();
#if USE_ITT_BUILD
- __kmp_itt_thread_ignore(); // Instruct Intel(R) Threading Tools to ignore monitor thread.
+ // Instruct Intel(R) Threading Tools to ignore monitor thread.
+ __kmp_itt_thread_ignore();
#endif /* USE_ITT_BUILD */
- __kmp_set_stack_info( ((kmp_info_t*)thr)->th.th_info.ds.ds_gtid, (kmp_info_t*)thr );
+ __kmp_set_stack_info(((kmp_info_t *)thr)->th.th_info.ds.ds_gtid,
+ (kmp_info_t *)thr);
- __kmp_check_stack_overlap( (kmp_info_t*)thr );
+ __kmp_check_stack_overlap((kmp_info_t *)thr);
#ifdef KMP_CANCEL_THREADS
- status = pthread_setcanceltype( PTHREAD_CANCEL_ASYNCHRONOUS, & old_type );
- KMP_CHECK_SYSFAIL( "pthread_setcanceltype", status );
- /* josh todo: isn't PTHREAD_CANCEL_ENABLE default for newly-created threads? */
- status = pthread_setcancelstate( PTHREAD_CANCEL_ENABLE, & old_state );
- KMP_CHECK_SYSFAIL( "pthread_setcancelstate", status );
+ status = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old_type);
+ KMP_CHECK_SYSFAIL("pthread_setcanceltype", status);
+ // josh todo: isn't PTHREAD_CANCEL_ENABLE default for newly-created threads?
+ status = pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_state);
+ KMP_CHECK_SYSFAIL("pthread_setcancelstate", status);
#endif
- #if KMP_REAL_TIME_FIX
- // This is a potential fix which allows application with real-time scheduling policy work.
- // However, decision about the fix is not made yet, so it is disabled by default.
- { // Are program started with real-time scheduling policy?
- int sched = sched_getscheduler( 0 );
- if ( sched == SCHED_FIFO || sched == SCHED_RR ) {
- // Yes, we are a part of real-time application. Try to increase the priority of the
- // monitor.
- struct sched_param param;
- int max_priority = sched_get_priority_max( sched );
- int rc;
- KMP_WARNING( RealTimeSchedNotSupported );
- sched_getparam( 0, & param );
- if ( param.sched_priority < max_priority ) {
- param.sched_priority += 1;
- rc = sched_setscheduler( 0, sched, & param );
- if ( rc != 0 ) {
- int error = errno;
- kmp_msg_t err_code = KMP_ERR( error );
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( CantChangeMonitorPriority ),
- err_code,
- KMP_MSG( MonitorWillStarve ),
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }; // if
- } else {
- // We cannot abort here, because number of CPUs may be enough for all the threads,
- // including the monitor thread, so application could potentially work...
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( RunningAtMaxPriority ),
- KMP_MSG( MonitorWillStarve ),
- KMP_HNT( RunningAtMaxPriority ),
- __kmp_msg_null
- );
- }; // if
+#if KMP_REAL_TIME_FIX
+ // This is a potential fix which allows application with real-time scheduling
+ // policy work. However, decision about the fix is not made yet, so it is
+ // disabled by default.
+ { // Are program started with real-time scheduling policy?
+ int sched = sched_getscheduler(0);
+ if (sched == SCHED_FIFO || sched == SCHED_RR) {
+ // Yes, we are a part of real-time application. Try to increase the
+ // priority of the monitor.
+ struct sched_param param;
+ int max_priority = sched_get_priority_max(sched);
+ int rc;
+ KMP_WARNING(RealTimeSchedNotSupported);
+ sched_getparam(0, ¶m);
+ if (param.sched_priority < max_priority) {
+ param.sched_priority += 1;
+ rc = sched_setscheduler(0, sched, ¶m);
+ if (rc != 0) {
+ int error = errno;
+ kmp_msg_t err_code = KMP_ERR(error);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(CantChangeMonitorPriority),
+ err_code, KMP_MSG(MonitorWillStarve), __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
}; // if
- TCW_4( __kmp_global.g.g_time.dt.t_value, 0 ); // AC: free thread that waits for monitor started
- }
- #endif // KMP_REAL_TIME_FIX
+ } else {
+ // We cannot abort here, because number of CPUs may be enough for all
+ // the threads, including the monitor thread, so application could
+ // potentially work...
+ __kmp_msg(kmp_ms_warning, KMP_MSG(RunningAtMaxPriority),
+ KMP_MSG(MonitorWillStarve), KMP_HNT(RunningAtMaxPriority),
+ __kmp_msg_null);
+ }; // if
+ }; // if
+ // AC: free thread that waits for monitor started
+ TCW_4(__kmp_global.g.g_time.dt.t_value, 0);
+ }
+#endif // KMP_REAL_TIME_FIX
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
- if ( __kmp_monitor_wakeups == 1 ) {
- interval.tv_sec = 1;
- interval.tv_nsec = 0;
- } else {
- interval.tv_sec = 0;
- interval.tv_nsec = (KMP_NSEC_PER_SEC / __kmp_monitor_wakeups);
+ if (__kmp_monitor_wakeups == 1) {
+ interval.tv_sec = 1;
+ interval.tv_nsec = 0;
+ } else {
+ interval.tv_sec = 0;
+ interval.tv_nsec = (KMP_NSEC_PER_SEC / __kmp_monitor_wakeups);
+ }
+
+ KA_TRACE(10, ("__kmp_launch_monitor: #2 monitor\n"));
+
+ if (__kmp_yield_cycle) {
+ __kmp_yielding_on = 0; /* Start out with yielding shut off */
+ yield_count = __kmp_yield_off_count;
+ } else {
+ __kmp_yielding_on = 1; /* Yielding is on permanently */
+ }
+
+ while (!TCR_4(__kmp_global.g.g_done)) {
+ struct timespec now;
+ struct timeval tval;
+
+ /* This thread monitors the state of the system */
+
+ KA_TRACE(15, ("__kmp_launch_monitor: update\n"));
+
+ status = gettimeofday(&tval, NULL);
+ KMP_CHECK_SYSFAIL_ERRNO("gettimeofday", status);
+ TIMEVAL_TO_TIMESPEC(&tval, &now);
+
+ now.tv_sec += interval.tv_sec;
+ now.tv_nsec += interval.tv_nsec;
+
+ if (now.tv_nsec >= KMP_NSEC_PER_SEC) {
+ now.tv_sec += 1;
+ now.tv_nsec -= KMP_NSEC_PER_SEC;
}
- KA_TRACE( 10, ("__kmp_launch_monitor: #2 monitor\n" ) );
+ status = pthread_mutex_lock(&__kmp_wait_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_lock", status);
+ // AC: the monitor should not fall asleep if g_done has been set
+ if (!TCR_4(__kmp_global.g.g_done)) { // check once more under mutex
+ status = pthread_cond_timedwait(&__kmp_wait_cv.c_cond,
+ &__kmp_wait_mx.m_mutex, &now);
+ if (status != 0) {
+ if (status != ETIMEDOUT && status != EINTR) {
+ KMP_SYSFAIL("pthread_cond_timedwait", status);
+ };
+ };
+ };
+ status = pthread_mutex_unlock(&__kmp_wait_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_unlock", status);
if (__kmp_yield_cycle) {
- __kmp_yielding_on = 0; /* Start out with yielding shut off */
- yield_count = __kmp_yield_off_count;
- } else {
- __kmp_yielding_on = 1; /* Yielding is on permanently */
- }
-
- while( ! TCR_4( __kmp_global.g.g_done ) ) {
- struct timespec now;
- struct timeval tval;
-
- /* This thread monitors the state of the system */
-
- KA_TRACE( 15, ( "__kmp_launch_monitor: update\n" ) );
-
- status = gettimeofday( &tval, NULL );
- KMP_CHECK_SYSFAIL_ERRNO( "gettimeofday", status );
- TIMEVAL_TO_TIMESPEC( &tval, &now );
-
- now.tv_sec += interval.tv_sec;
- now.tv_nsec += interval.tv_nsec;
-
- if (now.tv_nsec >= KMP_NSEC_PER_SEC) {
- now.tv_sec += 1;
- now.tv_nsec -= KMP_NSEC_PER_SEC;
- }
-
- status = pthread_mutex_lock( & __kmp_wait_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_lock", status );
- // AC: the monitor should not fall asleep if g_done has been set
- if ( !TCR_4(__kmp_global.g.g_done) ) { // check once more under mutex
- status = pthread_cond_timedwait( &__kmp_wait_cv.c_cond, &__kmp_wait_mx.m_mutex, &now );
- if ( status != 0 ) {
- if ( status != ETIMEDOUT && status != EINTR ) {
- KMP_SYSFAIL( "pthread_cond_timedwait", status );
- };
- };
- };
- status = pthread_mutex_unlock( & __kmp_wait_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_unlock", status );
-
- if (__kmp_yield_cycle) {
- yield_cycles++;
- if ( (yield_cycles % yield_count) == 0 ) {
- if (__kmp_yielding_on) {
- __kmp_yielding_on = 0; /* Turn it off now */
- yield_count = __kmp_yield_off_count;
- } else {
- __kmp_yielding_on = 1; /* Turn it on now */
- yield_count = __kmp_yield_on_count;
- }
- yield_cycles = 0;
- }
+ yield_cycles++;
+ if ((yield_cycles % yield_count) == 0) {
+ if (__kmp_yielding_on) {
+ __kmp_yielding_on = 0; /* Turn it off now */
+ yield_count = __kmp_yield_off_count;
} else {
- __kmp_yielding_on = 1;
+ __kmp_yielding_on = 1; /* Turn it on now */
+ yield_count = __kmp_yield_on_count;
}
-
- TCW_4( __kmp_global.g.g_time.dt.t_value,
- TCR_4( __kmp_global.g.g_time.dt.t_value ) + 1 );
-
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ yield_cycles = 0;
+ }
+ } else {
+ __kmp_yielding_on = 1;
}
- KA_TRACE( 10, ("__kmp_launch_monitor: #3 cleanup\n" ) );
+ TCW_4(__kmp_global.g.g_time.dt.t_value,
+ TCR_4(__kmp_global.g.g_time.dt.t_value) + 1);
+
+ KMP_MB(); /* Flush all pending memory write invalidates. */
+ }
+
+ KA_TRACE(10, ("__kmp_launch_monitor: #3 cleanup\n"));
#ifdef KMP_BLOCK_SIGNALS
- status = sigfillset( & new_set );
- KMP_CHECK_SYSFAIL_ERRNO( "sigfillset", status );
- status = pthread_sigmask( SIG_UNBLOCK, & new_set, NULL );
- KMP_CHECK_SYSFAIL( "pthread_sigmask", status );
+ status = sigfillset(&new_set);
+ KMP_CHECK_SYSFAIL_ERRNO("sigfillset", status);
+ status = pthread_sigmask(SIG_UNBLOCK, &new_set, NULL);
+ KMP_CHECK_SYSFAIL("pthread_sigmask", status);
#endif /* KMP_BLOCK_SIGNALS */
- KA_TRACE( 10, ("__kmp_launch_monitor: #4 finished\n" ) );
+ KA_TRACE(10, ("__kmp_launch_monitor: #4 finished\n"));
- if( __kmp_global.g.g_abort != 0 ) {
- /* now we need to terminate the worker threads */
- /* the value of t_abort is the signal we caught */
+ if (__kmp_global.g.g_abort != 0) {
+ /* now we need to terminate the worker threads */
+ /* the value of t_abort is the signal we caught */
- int gtid;
+ int gtid;
- KA_TRACE( 10, ("__kmp_launch_monitor: #5 terminate sig=%d\n", __kmp_global.g.g_abort ) );
+ KA_TRACE(10, ("__kmp_launch_monitor: #5 terminate sig=%d\n",
+ __kmp_global.g.g_abort));
- /* terminate the OpenMP worker threads */
- /* TODO this is not valid for sibling threads!!
- * the uber master might not be 0 anymore.. */
- for (gtid = 1; gtid < __kmp_threads_capacity; ++gtid)
- __kmp_terminate_thread( gtid );
+ /* terminate the OpenMP worker threads */
+ /* TODO this is not valid for sibling threads!!
+ * the uber master might not be 0 anymore.. */
+ for (gtid = 1; gtid < __kmp_threads_capacity; ++gtid)
+ __kmp_terminate_thread(gtid);
- __kmp_cleanup();
+ __kmp_cleanup();
- KA_TRACE( 10, ("__kmp_launch_monitor: #6 raise sig=%d\n", __kmp_global.g.g_abort ) );
+ KA_TRACE(10, ("__kmp_launch_monitor: #6 raise sig=%d\n",
+ __kmp_global.g.g_abort));
- if (__kmp_global.g.g_abort > 0)
- raise( __kmp_global.g.g_abort );
+ if (__kmp_global.g.g_abort > 0)
+ raise(__kmp_global.g.g_abort);
+ }
- }
+ KA_TRACE(10, ("__kmp_launch_monitor: #7 exit\n"));
- KA_TRACE( 10, ("__kmp_launch_monitor: #7 exit\n" ) );
-
- return thr;
+ return thr;
}
#endif // KMP_USE_MONITOR
-void
-__kmp_create_worker( int gtid, kmp_info_t *th, size_t stack_size )
-{
- pthread_t handle;
- pthread_attr_t thread_attr;
- int status;
+void __kmp_create_worker(int gtid, kmp_info_t *th, size_t stack_size) {
+ pthread_t handle;
+ pthread_attr_t thread_attr;
+ int status;
-
- th->th.th_info.ds.ds_gtid = gtid;
+ th->th.th_info.ds.ds_gtid = gtid;
#if KMP_STATS_ENABLED
- // sets up worker thread stats
- __kmp_acquire_tas_lock(&__kmp_stats_lock, gtid);
+ // sets up worker thread stats
+ __kmp_acquire_tas_lock(&__kmp_stats_lock, gtid);
- // th->th.th_stats is used to transfer thread specific stats-pointer to __kmp_launch_worker
- // So when thread is created (goes into __kmp_launch_worker) it will
- // set it's __thread local pointer to th->th.th_stats
- if(!KMP_UBER_GTID(gtid)) {
- th->th.th_stats = __kmp_stats_list->push_back(gtid);
- } else {
- // For root threads, the __kmp_stats_thread_ptr is set in __kmp_register_root(), so
- // set the th->th.th_stats field to it.
- th->th.th_stats = __kmp_stats_thread_ptr;
- }
- __kmp_release_tas_lock(&__kmp_stats_lock, gtid);
+ // th->th.th_stats is used to transfer thread-specific stats-pointer to
+ // __kmp_launch_worker. So when thread is created (goes into
+ // __kmp_launch_worker) it will set its __thread local pointer to
+ // th->th.th_stats
+ if (!KMP_UBER_GTID(gtid)) {
+ th->th.th_stats = __kmp_stats_list->push_back(gtid);
+ } else {
+ // For root threads, __kmp_stats_thread_ptr is set in __kmp_register_root(),
+ // so set the th->th.th_stats field to it.
+ th->th.th_stats = __kmp_stats_thread_ptr;
+ }
+ __kmp_release_tas_lock(&__kmp_stats_lock, gtid);
#endif // KMP_STATS_ENABLED
- if ( KMP_UBER_GTID(gtid) ) {
- KA_TRACE( 10, ("__kmp_create_worker: uber thread (%d)\n", gtid ) );
- th -> th.th_info.ds.ds_thread = pthread_self();
- __kmp_set_stack_info( gtid, th );
- __kmp_check_stack_overlap( th );
- return;
- }; // if
+ if (KMP_UBER_GTID(gtid)) {
+ KA_TRACE(10, ("__kmp_create_worker: uber thread (%d)\n", gtid));
+ th->th.th_info.ds.ds_thread = pthread_self();
+ __kmp_set_stack_info(gtid, th);
+ __kmp_check_stack_overlap(th);
+ return;
+ }; // if
- KA_TRACE( 10, ("__kmp_create_worker: try to create thread (%d)\n", gtid ) );
+ KA_TRACE(10, ("__kmp_create_worker: try to create thread (%d)\n", gtid));
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
#ifdef KMP_THREAD_ATTR
- status = pthread_attr_init( &thread_attr );
- if ( status != 0 ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( CantInitThreadAttrs ), KMP_ERR( status ), __kmp_msg_null);
- }; // if
- status = pthread_attr_setdetachstate( & thread_attr, PTHREAD_CREATE_JOINABLE );
- if ( status != 0 ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( CantSetWorkerState ), KMP_ERR( status ), __kmp_msg_null);
- }; // if
+ status = pthread_attr_init(&thread_attr);
+ if (status != 0) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantInitThreadAttrs), KMP_ERR(status),
+ __kmp_msg_null);
+ }; // if
+ status = pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
+ if (status != 0) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantSetWorkerState), KMP_ERR(status),
+ __kmp_msg_null);
+ }; // if
- /* Set stack size for this thread now.
- * The multiple of 2 is there because on some machines, requesting an unusual stacksize
- * causes the thread to have an offset before the dummy alloca() takes place to create the
- * offset. Since we want the user to have a sufficient stacksize AND support a stack offset, we
- * alloca() twice the offset so that the upcoming alloca() does not eliminate any premade
- * offset, and also gives the user the stack space they requested for all threads */
- stack_size += gtid * __kmp_stkoffset * 2;
+ /* Set stack size for this thread now.
+ The multiple of 2 is there because on some machines, requesting an unusual
+ stacksize causes the thread to have an offset before the dummy alloca()
+ takes place to create the offset. Since we want the user to have a
+ sufficient stacksize AND support a stack offset, we alloca() twice the
+ offset so that the upcoming alloca() does not eliminate any premade offset,
+ and also gives the user the stack space they requested for all threads */
+ stack_size += gtid * __kmp_stkoffset * 2;
- KA_TRACE( 10, ( "__kmp_create_worker: T#%d, default stacksize = %lu bytes, "
- "__kmp_stksize = %lu bytes, final stacksize = %lu bytes\n",
- gtid, KMP_DEFAULT_STKSIZE, __kmp_stksize, stack_size ) );
+ KA_TRACE(10, ("__kmp_create_worker: T#%d, default stacksize = %lu bytes, "
+ "__kmp_stksize = %lu bytes, final stacksize = %lu bytes\n",
+ gtid, KMP_DEFAULT_STKSIZE, __kmp_stksize, stack_size));
-# ifdef _POSIX_THREAD_ATTR_STACKSIZE
- status = pthread_attr_setstacksize( & thread_attr, stack_size );
-# ifdef KMP_BACKUP_STKSIZE
- if ( status != 0 ) {
- if ( ! __kmp_env_stksize ) {
- stack_size = KMP_BACKUP_STKSIZE + gtid * __kmp_stkoffset;
- __kmp_stksize = KMP_BACKUP_STKSIZE;
- KA_TRACE( 10, ("__kmp_create_worker: T#%d, default stacksize = %lu bytes, "
- "__kmp_stksize = %lu bytes, (backup) final stacksize = %lu "
- "bytes\n",
- gtid, KMP_DEFAULT_STKSIZE, __kmp_stksize, stack_size )
- );
- status = pthread_attr_setstacksize( &thread_attr, stack_size );
- }; // if
- }; // if
-# endif /* KMP_BACKUP_STKSIZE */
- if ( status != 0 ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( CantSetWorkerStackSize, stack_size ), KMP_ERR( status ),
- KMP_HNT( ChangeWorkerStackSize ), __kmp_msg_null);
- }; // if
-# endif /* _POSIX_THREAD_ATTR_STACKSIZE */
-
-#endif /* KMP_THREAD_ATTR */
-
- status = pthread_create( & handle, & thread_attr, __kmp_launch_worker, (void *) th );
- if ( status != 0 || ! handle ) { // ??? Why do we check handle??
#ifdef _POSIX_THREAD_ATTR_STACKSIZE
- if ( status == EINVAL ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( CantSetWorkerStackSize, stack_size ), KMP_ERR( status ),
- KMP_HNT( IncreaseWorkerStackSize ), __kmp_msg_null);
- };
- if ( status == ENOMEM ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( CantSetWorkerStackSize, stack_size ), KMP_ERR( status ),
- KMP_HNT( DecreaseWorkerStackSize ), __kmp_msg_null);
- };
+ status = pthread_attr_setstacksize(&thread_attr, stack_size);
+#ifdef KMP_BACKUP_STKSIZE
+ if (status != 0) {
+ if (!__kmp_env_stksize) {
+ stack_size = KMP_BACKUP_STKSIZE + gtid * __kmp_stkoffset;
+ __kmp_stksize = KMP_BACKUP_STKSIZE;
+ KA_TRACE(10, ("__kmp_create_worker: T#%d, default stacksize = %lu bytes, "
+ "__kmp_stksize = %lu bytes, (backup) final stacksize = %lu "
+ "bytes\n",
+ gtid, KMP_DEFAULT_STKSIZE, __kmp_stksize, stack_size));
+ status = pthread_attr_setstacksize(&thread_attr, stack_size);
+ }; // if
+ }; // if
+#endif /* KMP_BACKUP_STKSIZE */
+ if (status != 0) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantSetWorkerStackSize, stack_size),
+ KMP_ERR(status), KMP_HNT(ChangeWorkerStackSize), __kmp_msg_null);
+ }; // if
#endif /* _POSIX_THREAD_ATTR_STACKSIZE */
- if ( status == EAGAIN ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( NoResourcesForWorkerThread ), KMP_ERR( status ),
- KMP_HNT( Decrease_NUM_THREADS ), __kmp_msg_null);
- }; // if
- KMP_SYSFAIL( "pthread_create", status );
- }; // if
- th->th.th_info.ds.ds_thread = handle;
-
-#ifdef KMP_THREAD_ATTR
- status = pthread_attr_destroy( & thread_attr );
- if ( status ) {
- kmp_msg_t err_code = KMP_ERR( status );
- __kmp_msg(kmp_ms_warning, KMP_MSG( CantDestroyThreadAttrs ), err_code, __kmp_msg_null);
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }; // if
#endif /* KMP_THREAD_ATTR */
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ status =
+ pthread_create(&handle, &thread_attr, __kmp_launch_worker, (void *)th);
+ if (status != 0 || !handle) { // ??? Why do we check handle??
+#ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ if (status == EINVAL) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantSetWorkerStackSize, stack_size),
+ KMP_ERR(status), KMP_HNT(IncreaseWorkerStackSize),
+ __kmp_msg_null);
+ };
+ if (status == ENOMEM) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantSetWorkerStackSize, stack_size),
+ KMP_ERR(status), KMP_HNT(DecreaseWorkerStackSize),
+ __kmp_msg_null);
+ };
+#endif /* _POSIX_THREAD_ATTR_STACKSIZE */
+ if (status == EAGAIN) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(NoResourcesForWorkerThread),
+ KMP_ERR(status), KMP_HNT(Decrease_NUM_THREADS), __kmp_msg_null);
+ }; // if
+ KMP_SYSFAIL("pthread_create", status);
+ }; // if
- KA_TRACE( 10, ("__kmp_create_worker: done creating thread (%d)\n", gtid ) );
+ th->th.th_info.ds.ds_thread = handle;
+
+#ifdef KMP_THREAD_ATTR
+ status = pthread_attr_destroy(&thread_attr);
+ if (status) {
+ kmp_msg_t err_code = KMP_ERR(status);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(CantDestroyThreadAttrs), err_code,
+ __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
+ }; // if
+#endif /* KMP_THREAD_ATTR */
+
+ KMP_MB(); /* Flush all pending memory write invalidates. */
+
+ KA_TRACE(10, ("__kmp_create_worker: done creating thread (%d)\n", gtid));
} // __kmp_create_worker
-
#if KMP_USE_MONITOR
-void
-__kmp_create_monitor( kmp_info_t *th )
-{
- pthread_t handle;
- pthread_attr_t thread_attr;
- size_t size;
- int status;
- int auto_adj_size = FALSE;
+void __kmp_create_monitor(kmp_info_t *th) {
+ pthread_t handle;
+ pthread_attr_t thread_attr;
+ size_t size;
+ int status;
+ int auto_adj_size = FALSE;
- if( __kmp_dflt_blocktime == KMP_MAX_BLOCKTIME ) {
- // We don't need monitor thread in case of MAX_BLOCKTIME
- KA_TRACE( 10, ("__kmp_create_monitor: skipping monitor thread because of MAX blocktime\n" ) );
- th->th.th_info.ds.ds_tid = 0; // this makes reap_monitor no-op
- th->th.th_info.ds.ds_gtid = 0;
- return;
+ if (__kmp_dflt_blocktime == KMP_MAX_BLOCKTIME) {
+ // We don't need monitor thread in case of MAX_BLOCKTIME
+ KA_TRACE(10, ("__kmp_create_monitor: skipping monitor thread because of "
+ "MAX blocktime\n"));
+ th->th.th_info.ds.ds_tid = 0; // this makes reap_monitor no-op
+ th->th.th_info.ds.ds_gtid = 0;
+ return;
+ }
+ KA_TRACE(10, ("__kmp_create_monitor: try to create monitor\n"));
+
+ KMP_MB(); /* Flush all pending memory write invalidates. */
+
+ th->th.th_info.ds.ds_tid = KMP_GTID_MONITOR;
+ th->th.th_info.ds.ds_gtid = KMP_GTID_MONITOR;
+#if KMP_REAL_TIME_FIX
+ TCW_4(__kmp_global.g.g_time.dt.t_value,
+ -1); // Will use it for synchronization a bit later.
+#else
+ TCW_4(__kmp_global.g.g_time.dt.t_value, 0);
+#endif // KMP_REAL_TIME_FIX
+
+#ifdef KMP_THREAD_ATTR
+ if (__kmp_monitor_stksize == 0) {
+ __kmp_monitor_stksize = KMP_DEFAULT_MONITOR_STKSIZE;
+ auto_adj_size = TRUE;
+ }
+ status = pthread_attr_init(&thread_attr);
+ if (status != 0) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantInitThreadAttrs), KMP_ERR(status),
+ __kmp_msg_null);
+ }; // if
+ status = pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_JOINABLE);
+ if (status != 0) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(CantSetMonitorState), KMP_ERR(status),
+ __kmp_msg_null);
+ }; // if
+
+#ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ status = pthread_attr_getstacksize(&thread_attr, &size);
+ KMP_CHECK_SYSFAIL("pthread_attr_getstacksize", status);
+#else
+ size = __kmp_sys_min_stksize;
+#endif /* _POSIX_THREAD_ATTR_STACKSIZE */
+#endif /* KMP_THREAD_ATTR */
+
+ if (__kmp_monitor_stksize == 0) {
+ __kmp_monitor_stksize = KMP_DEFAULT_MONITOR_STKSIZE;
+ }
+ if (__kmp_monitor_stksize < __kmp_sys_min_stksize) {
+ __kmp_monitor_stksize = __kmp_sys_min_stksize;
+ }
+
+ KA_TRACE(10, ("__kmp_create_monitor: default stacksize = %lu bytes,"
+ "requested stacksize = %lu bytes\n",
+ size, __kmp_monitor_stksize));
+
+retry:
+
+/* Set stack size for this thread now. */
+#ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ KA_TRACE(10, ("__kmp_create_monitor: setting stacksize = %lu bytes,",
+ __kmp_monitor_stksize));
+ status = pthread_attr_setstacksize(&thread_attr, __kmp_monitor_stksize);
+ if (status != 0) {
+ if (auto_adj_size) {
+ __kmp_monitor_stksize *= 2;
+ goto retry;
}
- KA_TRACE( 10, ("__kmp_create_monitor: try to create monitor\n" ) );
-
- KMP_MB(); /* Flush all pending memory write invalidates. */
-
- th->th.th_info.ds.ds_tid = KMP_GTID_MONITOR;
- th->th.th_info.ds.ds_gtid = KMP_GTID_MONITOR;
- #if KMP_REAL_TIME_FIX
- TCW_4( __kmp_global.g.g_time.dt.t_value, -1 ); // Will use it for synchronization a bit later.
- #else
- TCW_4( __kmp_global.g.g_time.dt.t_value, 0 );
- #endif // KMP_REAL_TIME_FIX
-
- #ifdef KMP_THREAD_ATTR
- if ( __kmp_monitor_stksize == 0 ) {
- __kmp_monitor_stksize = KMP_DEFAULT_MONITOR_STKSIZE;
- auto_adj_size = TRUE;
- }
- status = pthread_attr_init( &thread_attr );
- if ( status != 0 ) {
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( CantInitThreadAttrs ),
- KMP_ERR( status ),
- __kmp_msg_null
- );
- }; // if
- status = pthread_attr_setdetachstate( & thread_attr, PTHREAD_CREATE_JOINABLE );
- if ( status != 0 ) {
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( CantSetMonitorState ),
- KMP_ERR( status ),
- __kmp_msg_null
- );
- }; // if
-
- #ifdef _POSIX_THREAD_ATTR_STACKSIZE
- status = pthread_attr_getstacksize( & thread_attr, & size );
- KMP_CHECK_SYSFAIL( "pthread_attr_getstacksize", status );
- #else
- size = __kmp_sys_min_stksize;
- #endif /* _POSIX_THREAD_ATTR_STACKSIZE */
- #endif /* KMP_THREAD_ATTR */
-
- if ( __kmp_monitor_stksize == 0 ) {
- __kmp_monitor_stksize = KMP_DEFAULT_MONITOR_STKSIZE;
+ kmp_msg_t err_code = KMP_ERR(status);
+ __kmp_msg(kmp_ms_warning, // should this be fatal? BB
+ KMP_MSG(CantSetMonitorStackSize, (long int)__kmp_monitor_stksize),
+ err_code, KMP_HNT(ChangeMonitorStackSize), __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
}
- if ( __kmp_monitor_stksize < __kmp_sys_min_stksize ) {
- __kmp_monitor_stksize = __kmp_sys_min_stksize;
- }
+ }; // if
+#endif /* _POSIX_THREAD_ATTR_STACKSIZE */
- KA_TRACE( 10, ( "__kmp_create_monitor: default stacksize = %lu bytes,"
- "requested stacksize = %lu bytes\n",
- size, __kmp_monitor_stksize ) );
+ status =
+ pthread_create(&handle, &thread_attr, __kmp_launch_monitor, (void *)th);
- retry:
-
- /* Set stack size for this thread now. */
-
- #ifdef _POSIX_THREAD_ATTR_STACKSIZE
- KA_TRACE( 10, ( "__kmp_create_monitor: setting stacksize = %lu bytes,",
- __kmp_monitor_stksize ) );
- status = pthread_attr_setstacksize( & thread_attr, __kmp_monitor_stksize );
- if ( status != 0 ) {
- if ( auto_adj_size ) {
- __kmp_monitor_stksize *= 2;
- goto retry;
- }
- kmp_msg_t err_code = KMP_ERR( status );
- __kmp_msg(
- kmp_ms_warning, // should this be fatal? BB
- KMP_MSG( CantSetMonitorStackSize, (long int) __kmp_monitor_stksize ),
- err_code,
- KMP_HNT( ChangeMonitorStackSize ),
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }; // if
- #endif /* _POSIX_THREAD_ATTR_STACKSIZE */
-
- status = pthread_create( &handle, & thread_attr, __kmp_launch_monitor, (void *) th );
-
- if ( status != 0 ) {
- #ifdef _POSIX_THREAD_ATTR_STACKSIZE
- if ( status == EINVAL ) {
- if ( auto_adj_size && ( __kmp_monitor_stksize < (size_t)0x40000000 ) ) {
- __kmp_monitor_stksize *= 2;
- goto retry;
- }
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( CantSetMonitorStackSize, __kmp_monitor_stksize ),
- KMP_ERR( status ),
- KMP_HNT( IncreaseMonitorStackSize ),
- __kmp_msg_null
- );
- }; // if
- if ( status == ENOMEM ) {
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( CantSetMonitorStackSize, __kmp_monitor_stksize ),
- KMP_ERR( status ),
- KMP_HNT( DecreaseMonitorStackSize ),
- __kmp_msg_null
- );
- }; // if
- #endif /* _POSIX_THREAD_ATTR_STACKSIZE */
- if ( status == EAGAIN ) {
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( NoResourcesForMonitorThread ),
- KMP_ERR( status ),
- KMP_HNT( DecreaseNumberOfThreadsInUse ),
- __kmp_msg_null
- );
- }; // if
- KMP_SYSFAIL( "pthread_create", status );
+ if (status != 0) {
+#ifdef _POSIX_THREAD_ATTR_STACKSIZE
+ if (status == EINVAL) {
+ if (auto_adj_size && (__kmp_monitor_stksize < (size_t)0x40000000)) {
+ __kmp_monitor_stksize *= 2;
+ goto retry;
+ }
+ __kmp_msg(
+ kmp_ms_fatal, KMP_MSG(CantSetMonitorStackSize, __kmp_monitor_stksize),
+ KMP_ERR(status), KMP_HNT(IncreaseMonitorStackSize), __kmp_msg_null);
}; // if
+ if (status == ENOMEM) {
+ __kmp_msg(
+ kmp_ms_fatal, KMP_MSG(CantSetMonitorStackSize, __kmp_monitor_stksize),
+ KMP_ERR(status), KMP_HNT(DecreaseMonitorStackSize), __kmp_msg_null);
+ }; // if
+#endif /* _POSIX_THREAD_ATTR_STACKSIZE */
+ if (status == EAGAIN) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(NoResourcesForMonitorThread),
+ KMP_ERR(status), KMP_HNT(DecreaseNumberOfThreadsInUse),
+ __kmp_msg_null);
+ }; // if
+ KMP_SYSFAIL("pthread_create", status);
+ }; // if
- th->th.th_info.ds.ds_thread = handle;
+ th->th.th_info.ds.ds_thread = handle;
- #if KMP_REAL_TIME_FIX
- // Wait for the monitor thread is really started and set its *priority*.
- KMP_DEBUG_ASSERT( sizeof( kmp_uint32 ) == sizeof( __kmp_global.g.g_time.dt.t_value ) );
- __kmp_wait_yield_4(
- (kmp_uint32 volatile *) & __kmp_global.g.g_time.dt.t_value, -1, & __kmp_neq_4, NULL
- );
- #endif // KMP_REAL_TIME_FIX
+#if KMP_REAL_TIME_FIX
+ // Wait for the monitor thread is really started and set its *priority*.
+ KMP_DEBUG_ASSERT(sizeof(kmp_uint32) ==
+ sizeof(__kmp_global.g.g_time.dt.t_value));
+ __kmp_wait_yield_4((kmp_uint32 volatile *)&__kmp_global.g.g_time.dt.t_value,
+ -1, &__kmp_neq_4, NULL);
+#endif // KMP_REAL_TIME_FIX
- #ifdef KMP_THREAD_ATTR
- status = pthread_attr_destroy( & thread_attr );
- if ( status != 0 ) {
- kmp_msg_t err_code = KMP_ERR( status );
- __kmp_msg(
- kmp_ms_warning,
- KMP_MSG( CantDestroyThreadAttrs ),
- err_code,
- __kmp_msg_null
- );
- if (__kmp_generate_warnings == kmp_warnings_off) {
- __kmp_str_free(&err_code.str);
- }
- }; // if
- #endif
+#ifdef KMP_THREAD_ATTR
+ status = pthread_attr_destroy(&thread_attr);
+ if (status != 0) {
+ kmp_msg_t err_code = KMP_ERR(status);
+ __kmp_msg(kmp_ms_warning, KMP_MSG(CantDestroyThreadAttrs), err_code,
+ __kmp_msg_null);
+ if (__kmp_generate_warnings == kmp_warnings_off) {
+ __kmp_str_free(&err_code.str);
+ }
+ }; // if
+#endif
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
- KA_TRACE( 10, ( "__kmp_create_monitor: monitor created %#.8lx\n", th->th.th_info.ds.ds_thread ) );
+ KA_TRACE(10, ("__kmp_create_monitor: monitor created %#.8lx\n",
+ th->th.th_info.ds.ds_thread));
} // __kmp_create_monitor
#endif // KMP_USE_MONITOR
-void
-__kmp_exit_thread(
- int exit_status
-) {
- pthread_exit( (void *)(intptr_t) exit_status );
+void __kmp_exit_thread(int exit_status) {
+ pthread_exit((void *)(intptr_t)exit_status);
} // __kmp_exit_thread
#if KMP_USE_MONITOR
void __kmp_resume_monitor();
-void
-__kmp_reap_monitor( kmp_info_t *th )
-{
- int status;
- void *exit_val;
+void __kmp_reap_monitor(kmp_info_t *th) {
+ int status;
+ void *exit_val;
- KA_TRACE( 10, ("__kmp_reap_monitor: try to reap monitor thread with handle %#.8lx\n",
- th->th.th_info.ds.ds_thread ) );
+ KA_TRACE(10, ("__kmp_reap_monitor: try to reap monitor thread with handle"
+ " %#.8lx\n",
+ th->th.th_info.ds.ds_thread));
- // If monitor has been created, its tid and gtid should be KMP_GTID_MONITOR.
- // If both tid and gtid are 0, it means the monitor did not ever start.
- // If both tid and gtid are KMP_GTID_DNE, the monitor has been shut down.
- KMP_DEBUG_ASSERT( th->th.th_info.ds.ds_tid == th->th.th_info.ds.ds_gtid );
- if ( th->th.th_info.ds.ds_gtid != KMP_GTID_MONITOR ) {
- KA_TRACE( 10, ("__kmp_reap_monitor: monitor did not start, returning\n") );
- return;
- }; // if
+ // If monitor has been created, its tid and gtid should be KMP_GTID_MONITOR.
+ // If both tid and gtid are 0, it means the monitor did not ever start.
+ // If both tid and gtid are KMP_GTID_DNE, the monitor has been shut down.
+ KMP_DEBUG_ASSERT(th->th.th_info.ds.ds_tid == th->th.th_info.ds.ds_gtid);
+ if (th->th.th_info.ds.ds_gtid != KMP_GTID_MONITOR) {
+ KA_TRACE(10, ("__kmp_reap_monitor: monitor did not start, returning\n"));
+ return;
+ }; // if
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
+ /* First, check to see whether the monitor thread exists to wake it up. This
+ is to avoid performance problem when the monitor sleeps during
+ blocktime-size interval */
- /* First, check to see whether the monitor thread exists to wake it up. This is
- to avoid performance problem when the monitor sleeps during blocktime-size
- interval */
+ status = pthread_kill(th->th.th_info.ds.ds_thread, 0);
+ if (status != ESRCH) {
+ __kmp_resume_monitor(); // Wake up the monitor thread
+ }
+ KA_TRACE(10, ("__kmp_reap_monitor: try to join with monitor\n"));
+ status = pthread_join(th->th.th_info.ds.ds_thread, &exit_val);
+ if (exit_val != th) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(ReapMonitorError), KMP_ERR(status),
+ __kmp_msg_null);
+ }
- status = pthread_kill( th->th.th_info.ds.ds_thread, 0 );
- if (status != ESRCH) {
- __kmp_resume_monitor(); // Wake up the monitor thread
- }
- KA_TRACE( 10, ("__kmp_reap_monitor: try to join with monitor\n") );
- status = pthread_join( th->th.th_info.ds.ds_thread, & exit_val);
- if (exit_val != th) {
- __kmp_msg(
- kmp_ms_fatal,
- KMP_MSG( ReapMonitorError ),
- KMP_ERR( status ),
- __kmp_msg_null
- );
- }
+ th->th.th_info.ds.ds_tid = KMP_GTID_DNE;
+ th->th.th_info.ds.ds_gtid = KMP_GTID_DNE;
- th->th.th_info.ds.ds_tid = KMP_GTID_DNE;
- th->th.th_info.ds.ds_gtid = KMP_GTID_DNE;
+ KA_TRACE(10, ("__kmp_reap_monitor: done reaping monitor thread with handle"
+ " %#.8lx\n",
+ th->th.th_info.ds.ds_thread));
- KA_TRACE( 10, ("__kmp_reap_monitor: done reaping monitor thread with handle %#.8lx\n",
- th->th.th_info.ds.ds_thread ) );
-
- KMP_MB(); /* Flush all pending memory write invalidates. */
-
+ KMP_MB(); /* Flush all pending memory write invalidates. */
}
#endif // KMP_USE_MONITOR
-void
-__kmp_reap_worker( kmp_info_t *th )
-{
- int status;
- void *exit_val;
+void __kmp_reap_worker(kmp_info_t *th) {
+ int status;
+ void *exit_val;
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
- KA_TRACE( 10, ("__kmp_reap_worker: try to reap T#%d\n", th->th.th_info.ds.ds_gtid ) );
+ KA_TRACE(
+ 10, ("__kmp_reap_worker: try to reap T#%d\n", th->th.th_info.ds.ds_gtid));
- status = pthread_join( th->th.th_info.ds.ds_thread, & exit_val);
+ status = pthread_join(th->th.th_info.ds.ds_thread, &exit_val);
#ifdef KMP_DEBUG
- /* Don't expose these to the user until we understand when they trigger */
- if ( status != 0 ) {
- __kmp_msg(kmp_ms_fatal, KMP_MSG( ReapWorkerError ), KMP_ERR( status ), __kmp_msg_null);
- }
- if ( exit_val != th ) {
- KA_TRACE( 10, ( "__kmp_reap_worker: worker T#%d did not reap properly, exit_val = %p\n",
- th->th.th_info.ds.ds_gtid, exit_val ) );
- }
+ /* Don't expose these to the user until we understand when they trigger */
+ if (status != 0) {
+ __kmp_msg(kmp_ms_fatal, KMP_MSG(ReapWorkerError), KMP_ERR(status),
+ __kmp_msg_null);
+ }
+ if (exit_val != th) {
+ KA_TRACE(10, ("__kmp_reap_worker: worker T#%d did not reap properly, "
+ "exit_val = %p\n",
+ th->th.th_info.ds.ds_gtid, exit_val));
+ }
#endif /* KMP_DEBUG */
- KA_TRACE( 10, ("__kmp_reap_worker: done reaping T#%d\n", th->th.th_info.ds.ds_gtid ) );
+ KA_TRACE(10, ("__kmp_reap_worker: done reaping T#%d\n",
+ th->th.th_info.ds.ds_gtid));
- KMP_MB(); /* Flush all pending memory write invalidates. */
+ KMP_MB(); /* Flush all pending memory write invalidates. */
}
-
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
#if KMP_HANDLE_SIGNALS
-
-static void
-__kmp_null_handler( int signo )
-{
- // Do nothing, for doing SIG_IGN-type actions.
+static void __kmp_null_handler(int signo) {
+ // Do nothing, for doing SIG_IGN-type actions.
} // __kmp_null_handler
-
-static void
-__kmp_team_handler( int signo )
-{
- if ( __kmp_global.g.g_abort == 0 ) {
- /* Stage 1 signal handler, let's shut down all of the threads */
- #ifdef KMP_DEBUG
- __kmp_debug_printf( "__kmp_team_handler: caught signal = %d\n", signo );
- #endif
- switch ( signo ) {
- case SIGHUP :
- case SIGINT :
- case SIGQUIT :
- case SIGILL :
- case SIGABRT :
- case SIGFPE :
- case SIGBUS :
- case SIGSEGV :
- #ifdef SIGSYS
- case SIGSYS :
- #endif
- case SIGTERM :
- if ( __kmp_debug_buf ) {
- __kmp_dump_debug_buffer( );
- }; // if
- KMP_MB(); // Flush all pending memory write invalidates.
- TCW_4( __kmp_global.g.g_abort, signo );
- KMP_MB(); // Flush all pending memory write invalidates.
- TCW_4( __kmp_global.g.g_done, TRUE );
- KMP_MB(); // Flush all pending memory write invalidates.
- break;
- default:
- #ifdef KMP_DEBUG
- __kmp_debug_printf( "__kmp_team_handler: unknown signal type" );
- #endif
- break;
- }; // switch
- }; // if
+static void __kmp_team_handler(int signo) {
+ if (__kmp_global.g.g_abort == 0) {
+/* Stage 1 signal handler, let's shut down all of the threads */
+#ifdef KMP_DEBUG
+ __kmp_debug_printf("__kmp_team_handler: caught signal = %d\n", signo);
+#endif
+ switch (signo) {
+ case SIGHUP:
+ case SIGINT:
+ case SIGQUIT:
+ case SIGILL:
+ case SIGABRT:
+ case SIGFPE:
+ case SIGBUS:
+ case SIGSEGV:
+#ifdef SIGSYS
+ case SIGSYS:
+#endif
+ case SIGTERM:
+ if (__kmp_debug_buf) {
+ __kmp_dump_debug_buffer();
+ }; // if
+ KMP_MB(); // Flush all pending memory write invalidates.
+ TCW_4(__kmp_global.g.g_abort, signo);
+ KMP_MB(); // Flush all pending memory write invalidates.
+ TCW_4(__kmp_global.g.g_done, TRUE);
+ KMP_MB(); // Flush all pending memory write invalidates.
+ break;
+ default:
+#ifdef KMP_DEBUG
+ __kmp_debug_printf("__kmp_team_handler: unknown signal type");
+#endif
+ break;
+ }; // switch
+ }; // if
} // __kmp_team_handler
-
-static
-void __kmp_sigaction( int signum, const struct sigaction * act, struct sigaction * oldact ) {
- int rc = sigaction( signum, act, oldact );
- KMP_CHECK_SYSFAIL_ERRNO( "sigaction", rc );
+static void __kmp_sigaction(int signum, const struct sigaction *act,
+ struct sigaction *oldact) {
+ int rc = sigaction(signum, act, oldact);
+ KMP_CHECK_SYSFAIL_ERRNO("sigaction", rc);
}
-
-static void
-__kmp_install_one_handler( int sig, sig_func_t handler_func, int parallel_init )
-{
- KMP_MB(); // Flush all pending memory write invalidates.
- KB_TRACE( 60, ( "__kmp_install_one_handler( %d, ..., %d )\n", sig, parallel_init ) );
- if ( parallel_init ) {
- struct sigaction new_action;
- struct sigaction old_action;
- new_action.sa_handler = handler_func;
- new_action.sa_flags = 0;
- sigfillset( & new_action.sa_mask );
- __kmp_sigaction( sig, & new_action, & old_action );
- if ( old_action.sa_handler == __kmp_sighldrs[ sig ].sa_handler ) {
- sigaddset( & __kmp_sigset, sig );
- } else {
- // Restore/keep user's handler if one previously installed.
- __kmp_sigaction( sig, & old_action, NULL );
- }; // if
+static void __kmp_install_one_handler(int sig, sig_func_t handler_func,
+ int parallel_init) {
+ KMP_MB(); // Flush all pending memory write invalidates.
+ KB_TRACE(60,
+ ("__kmp_install_one_handler( %d, ..., %d )\n", sig, parallel_init));
+ if (parallel_init) {
+ struct sigaction new_action;
+ struct sigaction old_action;
+ new_action.sa_handler = handler_func;
+ new_action.sa_flags = 0;
+ sigfillset(&new_action.sa_mask);
+ __kmp_sigaction(sig, &new_action, &old_action);
+ if (old_action.sa_handler == __kmp_sighldrs[sig].sa_handler) {
+ sigaddset(&__kmp_sigset, sig);
} else {
- // Save initial/system signal handlers to see if user handlers installed.
- __kmp_sigaction( sig, NULL, & __kmp_sighldrs[ sig ] );
+ // Restore/keep user's handler if one previously installed.
+ __kmp_sigaction(sig, &old_action, NULL);
}; // if
- KMP_MB(); // Flush all pending memory write invalidates.
+ } else {
+ // Save initial/system signal handlers to see if user handlers installed.
+ __kmp_sigaction(sig, NULL, &__kmp_sighldrs[sig]);
+ }; // if
+ KMP_MB(); // Flush all pending memory write invalidates.
} // __kmp_install_one_handler
-
-static void
-__kmp_remove_one_handler( int sig )
-{
- KB_TRACE( 60, ( "__kmp_remove_one_handler( %d )\n", sig ) );
- if ( sigismember( & __kmp_sigset, sig ) ) {
- struct sigaction old;
- KMP_MB(); // Flush all pending memory write invalidates.
- __kmp_sigaction( sig, & __kmp_sighldrs[ sig ], & old );
- if ( ( old.sa_handler != __kmp_team_handler ) && ( old.sa_handler != __kmp_null_handler ) ) {
- // Restore the users signal handler.
- KB_TRACE( 10, ( "__kmp_remove_one_handler: oops, not our handler, restoring: sig=%d\n", sig ) );
- __kmp_sigaction( sig, & old, NULL );
- }; // if
- sigdelset( & __kmp_sigset, sig );
- KMP_MB(); // Flush all pending memory write invalidates.
+static void __kmp_remove_one_handler(int sig) {
+ KB_TRACE(60, ("__kmp_remove_one_handler( %d )\n", sig));
+ if (sigismember(&__kmp_sigset, sig)) {
+ struct sigaction old;
+ KMP_MB(); // Flush all pending memory write invalidates.
+ __kmp_sigaction(sig, &__kmp_sighldrs[sig], &old);
+ if ((old.sa_handler != __kmp_team_handler) &&
+ (old.sa_handler != __kmp_null_handler)) {
+ // Restore the users signal handler.
+ KB_TRACE(10, ("__kmp_remove_one_handler: oops, not our handler, "
+ "restoring: sig=%d\n",
+ sig));
+ __kmp_sigaction(sig, &old, NULL);
}; // if
+ sigdelset(&__kmp_sigset, sig);
+ KMP_MB(); // Flush all pending memory write invalidates.
+ }; // if
} // __kmp_remove_one_handler
-
-void
-__kmp_install_signals( int parallel_init )
-{
- KB_TRACE( 10, ( "__kmp_install_signals( %d )\n", parallel_init ) );
- if ( __kmp_handle_signals || ! parallel_init ) {
- // If ! parallel_init, we do not install handlers, just save original handlers.
- // Let us do it even __handle_signals is 0.
- sigemptyset( & __kmp_sigset );
- __kmp_install_one_handler( SIGHUP, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGINT, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGQUIT, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGILL, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGABRT, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGFPE, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGBUS, __kmp_team_handler, parallel_init );
- __kmp_install_one_handler( SIGSEGV, __kmp_team_handler, parallel_init );
- #ifdef SIGSYS
- __kmp_install_one_handler( SIGSYS, __kmp_team_handler, parallel_init );
- #endif // SIGSYS
- __kmp_install_one_handler( SIGTERM, __kmp_team_handler, parallel_init );
- #ifdef SIGPIPE
- __kmp_install_one_handler( SIGPIPE, __kmp_team_handler, parallel_init );
- #endif // SIGPIPE
- }; // if
+void __kmp_install_signals(int parallel_init) {
+ KB_TRACE(10, ("__kmp_install_signals( %d )\n", parallel_init));
+ if (__kmp_handle_signals || !parallel_init) {
+ // If ! parallel_init, we do not install handlers, just save original
+ // handlers. Let us do it even __handle_signals is 0.
+ sigemptyset(&__kmp_sigset);
+ __kmp_install_one_handler(SIGHUP, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGINT, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGQUIT, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGILL, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGABRT, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGFPE, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGBUS, __kmp_team_handler, parallel_init);
+ __kmp_install_one_handler(SIGSEGV, __kmp_team_handler, parallel_init);
+#ifdef SIGSYS
+ __kmp_install_one_handler(SIGSYS, __kmp_team_handler, parallel_init);
+#endif // SIGSYS
+ __kmp_install_one_handler(SIGTERM, __kmp_team_handler, parallel_init);
+#ifdef SIGPIPE
+ __kmp_install_one_handler(SIGPIPE, __kmp_team_handler, parallel_init);
+#endif // SIGPIPE
+ }; // if
} // __kmp_install_signals
-
-void
-__kmp_remove_signals( void )
-{
- int sig;
- KB_TRACE( 10, ( "__kmp_remove_signals()\n" ) );
- for ( sig = 1; sig < NSIG; ++ sig ) {
- __kmp_remove_one_handler( sig );
- }; // for sig
+void __kmp_remove_signals(void) {
+ int sig;
+ KB_TRACE(10, ("__kmp_remove_signals()\n"));
+ for (sig = 1; sig < NSIG; ++sig) {
+ __kmp_remove_one_handler(sig);
+ }; // for sig
} // __kmp_remove_signals
-
#endif // KMP_HANDLE_SIGNALS
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-void
-__kmp_enable( int new_state )
-{
- #ifdef KMP_CANCEL_THREADS
- int status, old_state;
- status = pthread_setcancelstate( new_state, & old_state );
- KMP_CHECK_SYSFAIL( "pthread_setcancelstate", status );
- KMP_DEBUG_ASSERT( old_state == PTHREAD_CANCEL_DISABLE );
- #endif
+void __kmp_enable(int new_state) {
+#ifdef KMP_CANCEL_THREADS
+ int status, old_state;
+ status = pthread_setcancelstate(new_state, &old_state);
+ KMP_CHECK_SYSFAIL("pthread_setcancelstate", status);
+ KMP_DEBUG_ASSERT(old_state == PTHREAD_CANCEL_DISABLE);
+#endif
}
-void
-__kmp_disable( int * old_state )
-{
- #ifdef KMP_CANCEL_THREADS
- int status;
- status = pthread_setcancelstate( PTHREAD_CANCEL_DISABLE, old_state );
- KMP_CHECK_SYSFAIL( "pthread_setcancelstate", status );
- #endif
+void __kmp_disable(int *old_state) {
+#ifdef KMP_CANCEL_THREADS
+ int status;
+ status = pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, old_state);
+ KMP_CHECK_SYSFAIL("pthread_setcancelstate", status);
+#endif
}
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-static void
-__kmp_atfork_prepare (void)
-{
- /* nothing to do */
+static void __kmp_atfork_prepare(void) { /* nothing to do */
}
-static void
-__kmp_atfork_parent (void)
-{
- /* nothing to do */
+static void __kmp_atfork_parent(void) { /* nothing to do */
}
-/*
- Reset the library so execution in the child starts "all over again" with
- clean data structures in initial states. Don't worry about freeing memory
- allocated by parent, just abandon it to be safe.
-*/
-static void
-__kmp_atfork_child (void)
-{
- /* TODO make sure this is done right for nested/sibling */
- // ATT: Memory leaks are here? TODO: Check it and fix.
- /* KMP_ASSERT( 0 ); */
+/* Reset the library so execution in the child starts "all over again" with
+ clean data structures in initial states. Don't worry about freeing memory
+ allocated by parent, just abandon it to be safe. */
+static void __kmp_atfork_child(void) {
+ /* TODO make sure this is done right for nested/sibling */
+ // ATT: Memory leaks are here? TODO: Check it and fix.
+ /* KMP_ASSERT( 0 ); */
- ++__kmp_fork_count;
+ ++__kmp_fork_count;
- __kmp_init_runtime = FALSE;
+ __kmp_init_runtime = FALSE;
#if KMP_USE_MONITOR
- __kmp_init_monitor = 0;
+ __kmp_init_monitor = 0;
#endif
- __kmp_init_parallel = FALSE;
- __kmp_init_middle = FALSE;
- __kmp_init_serial = FALSE;
- TCW_4(__kmp_init_gtid, FALSE);
- __kmp_init_common = FALSE;
+ __kmp_init_parallel = FALSE;
+ __kmp_init_middle = FALSE;
+ __kmp_init_serial = FALSE;
+ TCW_4(__kmp_init_gtid, FALSE);
+ __kmp_init_common = FALSE;
- TCW_4(__kmp_init_user_locks, FALSE);
-#if ! KMP_USE_DYNAMIC_LOCK
- __kmp_user_lock_table.used = 1;
- __kmp_user_lock_table.allocated = 0;
- __kmp_user_lock_table.table = NULL;
- __kmp_lock_blocks = NULL;
+ TCW_4(__kmp_init_user_locks, FALSE);
+#if !KMP_USE_DYNAMIC_LOCK
+ __kmp_user_lock_table.used = 1;
+ __kmp_user_lock_table.allocated = 0;
+ __kmp_user_lock_table.table = NULL;
+ __kmp_lock_blocks = NULL;
#endif
- __kmp_all_nth = 0;
- TCW_4(__kmp_nth, 0);
+ __kmp_all_nth = 0;
+ TCW_4(__kmp_nth, 0);
- /* Must actually zero all the *cache arguments passed to __kmpc_threadprivate here
- so threadprivate doesn't use stale data */
- KA_TRACE( 10, ( "__kmp_atfork_child: checking cache address list %p\n",
- __kmp_threadpriv_cache_list ) );
+ /* Must actually zero all the *cache arguments passed to __kmpc_threadprivate
+ here so threadprivate doesn't use stale data */
+ KA_TRACE(10, ("__kmp_atfork_child: checking cache address list %p\n",
+ __kmp_threadpriv_cache_list));
- while ( __kmp_threadpriv_cache_list != NULL ) {
+ while (__kmp_threadpriv_cache_list != NULL) {
- if ( *__kmp_threadpriv_cache_list -> addr != NULL ) {
- KC_TRACE( 50, ( "__kmp_atfork_child: zeroing cache at address %p\n",
- &(*__kmp_threadpriv_cache_list -> addr) ) );
+ if (*__kmp_threadpriv_cache_list->addr != NULL) {
+ KC_TRACE(50, ("__kmp_atfork_child: zeroing cache at address %p\n",
+ &(*__kmp_threadpriv_cache_list->addr)));
- *__kmp_threadpriv_cache_list -> addr = NULL;
- }
- __kmp_threadpriv_cache_list = __kmp_threadpriv_cache_list -> next;
+ *__kmp_threadpriv_cache_list->addr = NULL;
}
+ __kmp_threadpriv_cache_list = __kmp_threadpriv_cache_list->next;
+ }
- __kmp_init_runtime = FALSE;
+ __kmp_init_runtime = FALSE;
- /* reset statically initialized locks */
- __kmp_init_bootstrap_lock( &__kmp_initz_lock );
- __kmp_init_bootstrap_lock( &__kmp_stdio_lock );
- __kmp_init_bootstrap_lock( &__kmp_console_lock );
+ /* reset statically initialized locks */
+ __kmp_init_bootstrap_lock(&__kmp_initz_lock);
+ __kmp_init_bootstrap_lock(&__kmp_stdio_lock);
+ __kmp_init_bootstrap_lock(&__kmp_console_lock);
- /* This is necessary to make sure no stale data is left around */
- /* AC: customers complain that we use unsafe routines in the atfork
- handler. Mathworks: dlsym() is unsafe. We call dlsym and dlopen
- in dynamic_link when check the presence of shared tbbmalloc library.
- Suggestion is to make the library initialization lazier, similar
- to what done for __kmpc_begin(). */
- // TODO: synchronize all static initializations with regular library
- // startup; look at kmp_global.cpp and etc.
- //__kmp_internal_begin ();
-
+ /* This is necessary to make sure no stale data is left around */
+ /* AC: customers complain that we use unsafe routines in the atfork
+ handler. Mathworks: dlsym() is unsafe. We call dlsym and dlopen
+ in dynamic_link when check the presence of shared tbbmalloc library.
+ Suggestion is to make the library initialization lazier, similar
+ to what done for __kmpc_begin(). */
+ // TODO: synchronize all static initializations with regular library
+ // startup; look at kmp_global.cpp and etc.
+ //__kmp_internal_begin ();
}
-void
-__kmp_register_atfork(void) {
- if ( __kmp_need_register_atfork ) {
- int status = pthread_atfork( __kmp_atfork_prepare, __kmp_atfork_parent, __kmp_atfork_child );
- KMP_CHECK_SYSFAIL( "pthread_atfork", status );
- __kmp_need_register_atfork = FALSE;
- }
+void __kmp_register_atfork(void) {
+ if (__kmp_need_register_atfork) {
+ int status = pthread_atfork(__kmp_atfork_prepare, __kmp_atfork_parent,
+ __kmp_atfork_child);
+ KMP_CHECK_SYSFAIL("pthread_atfork", status);
+ __kmp_need_register_atfork = FALSE;
+ }
}
-void
-__kmp_suspend_initialize( void )
-{
+void __kmp_suspend_initialize(void) {
+ int status;
+ status = pthread_mutexattr_init(&__kmp_suspend_mutex_attr);
+ KMP_CHECK_SYSFAIL("pthread_mutexattr_init", status);
+ status = pthread_condattr_init(&__kmp_suspend_cond_attr);
+ KMP_CHECK_SYSFAIL("pthread_condattr_init", status);
+}
+
+static void __kmp_suspend_initialize_thread(kmp_info_t *th) {
+ ANNOTATE_HAPPENS_AFTER(&th->th.th_suspend_init_count);
+ if (th->th.th_suspend_init_count <= __kmp_fork_count) {
+ /* this means we haven't initialized the suspension pthread objects for this
+ thread in this instance of the process */
int status;
- status = pthread_mutexattr_init( &__kmp_suspend_mutex_attr );
- KMP_CHECK_SYSFAIL( "pthread_mutexattr_init", status );
- status = pthread_condattr_init( &__kmp_suspend_cond_attr );
- KMP_CHECK_SYSFAIL( "pthread_condattr_init", status );
+ status = pthread_cond_init(&th->th.th_suspend_cv.c_cond,
+ &__kmp_suspend_cond_attr);
+ KMP_CHECK_SYSFAIL("pthread_cond_init", status);
+ status = pthread_mutex_init(&th->th.th_suspend_mx.m_mutex,
+ &__kmp_suspend_mutex_attr);
+ KMP_CHECK_SYSFAIL("pthread_mutex_init", status);
+ *(volatile int *)&th->th.th_suspend_init_count = __kmp_fork_count + 1;
+ ANNOTATE_HAPPENS_BEFORE(&th->th.th_suspend_init_count);
+ };
}
-static void
-__kmp_suspend_initialize_thread( kmp_info_t *th )
-{
- ANNOTATE_HAPPENS_AFTER(&th->th.th_suspend_init_count);
- if ( th->th.th_suspend_init_count <= __kmp_fork_count ) {
- /* this means we haven't initialized the suspension pthread objects for this thread
- in this instance of the process */
- int status;
- status = pthread_cond_init( &th->th.th_suspend_cv.c_cond, &__kmp_suspend_cond_attr );
- KMP_CHECK_SYSFAIL( "pthread_cond_init", status );
- status = pthread_mutex_init( &th->th.th_suspend_mx.m_mutex, & __kmp_suspend_mutex_attr );
- KMP_CHECK_SYSFAIL( "pthread_mutex_init", status );
- *(volatile int*)&th->th.th_suspend_init_count = __kmp_fork_count + 1;
- ANNOTATE_HAPPENS_BEFORE(&th->th.th_suspend_init_count);
+void __kmp_suspend_uninitialize_thread(kmp_info_t *th) {
+ if (th->th.th_suspend_init_count > __kmp_fork_count) {
+ /* this means we have initialize the suspension pthread objects for this
+ thread in this instance of the process */
+ int status;
+
+ status = pthread_cond_destroy(&th->th.th_suspend_cv.c_cond);
+ if (status != 0 && status != EBUSY) {
+ KMP_SYSFAIL("pthread_cond_destroy", status);
};
+ status = pthread_mutex_destroy(&th->th.th_suspend_mx.m_mutex);
+ if (status != 0 && status != EBUSY) {
+ KMP_SYSFAIL("pthread_mutex_destroy", status);
+ };
+ --th->th.th_suspend_init_count;
+ KMP_DEBUG_ASSERT(th->th.th_suspend_init_count == __kmp_fork_count);
+ }
}
-void
-__kmp_suspend_uninitialize_thread( kmp_info_t *th )
-{
- if(th->th.th_suspend_init_count > __kmp_fork_count) {
- /* this means we have initialize the suspension pthread objects for this thread
- in this instance of the process */
- int status;
-
- status = pthread_cond_destroy( &th->th.th_suspend_cv.c_cond );
- if ( status != 0 && status != EBUSY ) {
- KMP_SYSFAIL( "pthread_cond_destroy", status );
- };
- status = pthread_mutex_destroy( &th->th.th_suspend_mx.m_mutex );
- if ( status != 0 && status != EBUSY ) {
- KMP_SYSFAIL( "pthread_mutex_destroy", status );
- };
- --th->th.th_suspend_init_count;
- KMP_DEBUG_ASSERT(th->th.th_suspend_init_count == __kmp_fork_count);
- }
-}
/* This routine puts the calling thread to sleep after setting the
- * sleep bit for the indicated flag variable to true.
- */
+ sleep bit for the indicated flag variable to true. */
template <class C>
-static inline void __kmp_suspend_template( int th_gtid, C *flag )
-{
- KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(USER_suspend);
- kmp_info_t *th = __kmp_threads[th_gtid];
- int status;
- typename C::flag_t old_spin;
+static inline void __kmp_suspend_template(int th_gtid, C *flag) {
+ KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(USER_suspend);
+ kmp_info_t *th = __kmp_threads[th_gtid];
+ int status;
+ typename C::flag_t old_spin;
- KF_TRACE( 30, ("__kmp_suspend_template: T#%d enter for flag = %p\n", th_gtid, flag->get() ) );
+ KF_TRACE(30, ("__kmp_suspend_template: T#%d enter for flag = %p\n", th_gtid,
+ flag->get()));
- __kmp_suspend_initialize_thread( th );
+ __kmp_suspend_initialize_thread(th);
- status = pthread_mutex_lock( &th->th.th_suspend_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_lock", status );
+ status = pthread_mutex_lock(&th->th.th_suspend_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_lock", status);
- KF_TRACE( 10, ( "__kmp_suspend_template: T#%d setting sleep bit for spin(%p)\n",
- th_gtid, flag->get() ) );
+ KF_TRACE(10, ("__kmp_suspend_template: T#%d setting sleep bit for spin(%p)\n",
+ th_gtid, flag->get()));
- /* TODO: shouldn't this use release semantics to ensure that __kmp_suspend_initialize_thread
- gets called first?
- */
- old_spin = flag->set_sleeping();
+ /* TODO: shouldn't this use release semantics to ensure that
+ __kmp_suspend_initialize_thread gets called first? */
+ old_spin = flag->set_sleeping();
- KF_TRACE( 5, ( "__kmp_suspend_template: T#%d set sleep bit for spin(%p)==%x, was %x\n",
- th_gtid, flag->get(), *(flag->get()), old_spin ) );
+ KF_TRACE(5, ("__kmp_suspend_template: T#%d set sleep bit for spin(%p)==%x,"
+ " was %x\n",
+ th_gtid, flag->get(), *(flag->get()), old_spin));
- if ( flag->done_check_val(old_spin) ) {
- old_spin = flag->unset_sleeping();
- KF_TRACE( 5, ( "__kmp_suspend_template: T#%d false alarm, reset sleep bit for spin(%p)\n",
- th_gtid, flag->get()) );
- } else {
- /* Encapsulate in a loop as the documentation states that this may
- * "with low probability" return when the condition variable has
- * not been signaled or broadcast
- */
- int deactivated = FALSE;
- TCW_PTR(th->th.th_sleep_loc, (void *)flag);
- while ( flag->is_sleeping() ) {
+ if (flag->done_check_val(old_spin)) {
+ old_spin = flag->unset_sleeping();
+ KF_TRACE(5, ("__kmp_suspend_template: T#%d false alarm, reset sleep bit "
+ "for spin(%p)\n",
+ th_gtid, flag->get()));
+ } else {
+ /* Encapsulate in a loop as the documentation states that this may
+ "with low probability" return when the condition variable has
+ not been signaled or broadcast */
+ int deactivated = FALSE;
+ TCW_PTR(th->th.th_sleep_loc, (void *)flag);
+
+ while (flag->is_sleeping()) {
#ifdef DEBUG_SUSPEND
- char buffer[128];
- __kmp_suspend_count++;
- __kmp_print_cond( buffer, &th->th.th_suspend_cv );
- __kmp_printf( "__kmp_suspend_template: suspending T#%d: %s\n", th_gtid, buffer );
+ char buffer[128];
+ __kmp_suspend_count++;
+ __kmp_print_cond(buffer, &th->th.th_suspend_cv);
+ __kmp_printf("__kmp_suspend_template: suspending T#%d: %s\n", th_gtid,
+ buffer);
#endif
- // Mark the thread as no longer active (only in the first iteration of the loop).
- if ( ! deactivated ) {
- th->th.th_active = FALSE;
- if ( th->th.th_active_in_pool ) {
- th->th.th_active_in_pool = FALSE;
- KMP_TEST_THEN_DEC32(
- (kmp_int32 *) &__kmp_thread_pool_active_nth );
- KMP_DEBUG_ASSERT( TCR_4(__kmp_thread_pool_active_nth) >= 0 );
- }
- deactivated = TRUE;
- }
+ // Mark the thread as no longer active (only in the first iteration of the
+ // loop).
+ if (!deactivated) {
+ th->th.th_active = FALSE;
+ if (th->th.th_active_in_pool) {
+ th->th.th_active_in_pool = FALSE;
+ KMP_TEST_THEN_DEC32((kmp_int32 *)&__kmp_thread_pool_active_nth);
+ KMP_DEBUG_ASSERT(TCR_4(__kmp_thread_pool_active_nth) >= 0);
+ }
+ deactivated = TRUE;
+ }
#if USE_SUSPEND_TIMEOUT
- struct timespec now;
- struct timeval tval;
- int msecs;
+ struct timespec now;
+ struct timeval tval;
+ int msecs;
- status = gettimeofday( &tval, NULL );
- KMP_CHECK_SYSFAIL_ERRNO( "gettimeofday", status );
- TIMEVAL_TO_TIMESPEC( &tval, &now );
+ status = gettimeofday(&tval, NULL);
+ KMP_CHECK_SYSFAIL_ERRNO("gettimeofday", status);
+ TIMEVAL_TO_TIMESPEC(&tval, &now);
- msecs = (4*__kmp_dflt_blocktime) + 200;
- now.tv_sec += msecs / 1000;
- now.tv_nsec += (msecs % 1000)*1000;
+ msecs = (4 * __kmp_dflt_blocktime) + 200;
+ now.tv_sec += msecs / 1000;
+ now.tv_nsec += (msecs % 1000) * 1000;
- KF_TRACE( 15, ( "__kmp_suspend_template: T#%d about to perform pthread_cond_timedwait\n",
- th_gtid ) );
- status = pthread_cond_timedwait( &th->th.th_suspend_cv.c_cond, &th->th.th_suspend_mx.m_mutex, & now );
+ KF_TRACE(15, ("__kmp_suspend_template: T#%d about to perform "
+ "pthread_cond_timedwait\n",
+ th_gtid));
+ status = pthread_cond_timedwait(&th->th.th_suspend_cv.c_cond,
+ &th->th.th_suspend_mx.m_mutex, &now);
#else
- KF_TRACE( 15, ( "__kmp_suspend_template: T#%d about to perform pthread_cond_wait\n",
- th_gtid ) );
- status = pthread_cond_wait( &th->th.th_suspend_cv.c_cond, &th->th.th_suspend_mx.m_mutex );
+ KF_TRACE(15, ("__kmp_suspend_template: T#%d about to perform"
+ " pthread_cond_wait\n",
+ th_gtid));
+ status = pthread_cond_wait(&th->th.th_suspend_cv.c_cond,
+ &th->th.th_suspend_mx.m_mutex);
#endif
- if ( (status != 0) && (status != EINTR) && (status != ETIMEDOUT) ) {
- KMP_SYSFAIL( "pthread_cond_wait", status );
- }
+ if ((status != 0) && (status != EINTR) && (status != ETIMEDOUT)) {
+ KMP_SYSFAIL("pthread_cond_wait", status);
+ }
#ifdef KMP_DEBUG
- if (status == ETIMEDOUT) {
- if ( flag->is_sleeping() ) {
- KF_TRACE( 100, ( "__kmp_suspend_template: T#%d timeout wakeup\n", th_gtid ) );
- } else {
- KF_TRACE( 2, ( "__kmp_suspend_template: T#%d timeout wakeup, sleep bit not set!\n",
- th_gtid ) );
- }
- } else if ( flag->is_sleeping() ) {
- KF_TRACE( 100, ( "__kmp_suspend_template: T#%d spurious wakeup\n", th_gtid ) );
- }
-#endif
- } // while
-
- // Mark the thread as active again (if it was previous marked as inactive)
- if ( deactivated ) {
- th->th.th_active = TRUE;
- if ( TCR_4(th->th.th_in_pool) ) {
- KMP_TEST_THEN_INC32( (kmp_int32 *) &__kmp_thread_pool_active_nth );
- th->th.th_active_in_pool = TRUE;
- }
+ if (status == ETIMEDOUT) {
+ if (flag->is_sleeping()) {
+ KF_TRACE(100,
+ ("__kmp_suspend_template: T#%d timeout wakeup\n", th_gtid));
+ } else {
+ KF_TRACE(2, ("__kmp_suspend_template: T#%d timeout wakeup, sleep bit "
+ "not set!\n",
+ th_gtid));
}
- }
+ } else if (flag->is_sleeping()) {
+ KF_TRACE(100,
+ ("__kmp_suspend_template: T#%d spurious wakeup\n", th_gtid));
+ }
+#endif
+ } // while
-#ifdef DEBUG_SUSPEND
- {
- char buffer[128];
- __kmp_print_cond( buffer, &th->th.th_suspend_cv);
- __kmp_printf( "__kmp_suspend_template: T#%d has awakened: %s\n", th_gtid, buffer );
+ // Mark the thread as active again (if it was previous marked as inactive)
+ if (deactivated) {
+ th->th.th_active = TRUE;
+ if (TCR_4(th->th.th_in_pool)) {
+ KMP_TEST_THEN_INC32((kmp_int32 *)&__kmp_thread_pool_active_nth);
+ th->th.th_active_in_pool = TRUE;
+ }
}
+ }
+#ifdef DEBUG_SUSPEND
+ {
+ char buffer[128];
+ __kmp_print_cond(buffer, &th->th.th_suspend_cv);
+ __kmp_printf("__kmp_suspend_template: T#%d has awakened: %s\n", th_gtid,
+ buffer);
+ }
#endif
- status = pthread_mutex_unlock( &th->th.th_suspend_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_unlock", status );
-
- KF_TRACE( 30, ("__kmp_suspend_template: T#%d exit\n", th_gtid ) );
+ status = pthread_mutex_unlock(&th->th.th_suspend_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_unlock", status);
+ KF_TRACE(30, ("__kmp_suspend_template: T#%d exit\n", th_gtid));
}
void __kmp_suspend_32(int th_gtid, kmp_flag_32 *flag) {
- __kmp_suspend_template(th_gtid, flag);
+ __kmp_suspend_template(th_gtid, flag);
}
void __kmp_suspend_64(int th_gtid, kmp_flag_64 *flag) {
- __kmp_suspend_template(th_gtid, flag);
+ __kmp_suspend_template(th_gtid, flag);
}
void __kmp_suspend_oncore(int th_gtid, kmp_flag_oncore *flag) {
- __kmp_suspend_template(th_gtid, flag);
+ __kmp_suspend_template(th_gtid, flag);
}
-
/* This routine signals the thread specified by target_gtid to wake up
- * after setting the sleep bit indicated by the flag argument to FALSE.
- * The target thread must already have called __kmp_suspend_template()
- */
+ after setting the sleep bit indicated by the flag argument to FALSE.
+ The target thread must already have called __kmp_suspend_template() */
template <class C>
-static inline void __kmp_resume_template( int target_gtid, C *flag )
-{
- KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(USER_resume);
- kmp_info_t *th = __kmp_threads[target_gtid];
- int status;
+static inline void __kmp_resume_template(int target_gtid, C *flag) {
+ KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(USER_resume);
+ kmp_info_t *th = __kmp_threads[target_gtid];
+ int status;
#ifdef KMP_DEBUG
- int gtid = TCR_4(__kmp_init_gtid) ? __kmp_get_gtid() : -1;
+ int gtid = TCR_4(__kmp_init_gtid) ? __kmp_get_gtid() : -1;
#endif
- KF_TRACE( 30, ( "__kmp_resume_template: T#%d wants to wakeup T#%d enter\n", gtid, target_gtid ) );
- KMP_DEBUG_ASSERT( gtid != target_gtid );
+ KF_TRACE(30, ("__kmp_resume_template: T#%d wants to wakeup T#%d enter\n",
+ gtid, target_gtid));
+ KMP_DEBUG_ASSERT(gtid != target_gtid);
- __kmp_suspend_initialize_thread( th );
+ __kmp_suspend_initialize_thread(th);
- status = pthread_mutex_lock( &th->th.th_suspend_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_lock", status );
+ status = pthread_mutex_lock(&th->th.th_suspend_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_lock", status);
- if (!flag) { // coming from __kmp_null_resume_wrapper
- flag = (C *)th->th.th_sleep_loc;
+ if (!flag) { // coming from __kmp_null_resume_wrapper
+ flag = (C *)th->th.th_sleep_loc;
+ }
+
+ // First, check if the flag is null or its type has changed. If so, someone
+ // else woke it up.
+ if (!flag || flag->get_type() != flag->get_ptr_type()) { // get_ptr_type
+ // simply shows what
+ // flag was cast to
+ KF_TRACE(5, ("__kmp_resume_template: T#%d exiting, thread T#%d already "
+ "awake: flag(%p)\n",
+ gtid, target_gtid, NULL));
+ status = pthread_mutex_unlock(&th->th.th_suspend_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_unlock", status);
+ return;
+ } else { // if multiple threads are sleeping, flag should be internally
+ // referring to a specific thread here
+ typename C::flag_t old_spin = flag->unset_sleeping();
+ if (!flag->is_sleeping_val(old_spin)) {
+ KF_TRACE(5, ("__kmp_resume_template: T#%d exiting, thread T#%d already "
+ "awake: flag(%p): "
+ "%u => %u\n",
+ gtid, target_gtid, flag->get(), old_spin, *flag->get()));
+ status = pthread_mutex_unlock(&th->th.th_suspend_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_unlock", status);
+ return;
}
-
- // First, check if the flag is null or its type has changed. If so, someone else woke it up.
- if (!flag || flag->get_type() != flag->get_ptr_type()) { // get_ptr_type simply shows what flag was cast to
- KF_TRACE( 5, ( "__kmp_resume_template: T#%d exiting, thread T#%d already awake: flag(%p)\n",
- gtid, target_gtid, NULL ) );
- status = pthread_mutex_unlock( &th->th.th_suspend_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_unlock", status );
- return;
- }
- else { // if multiple threads are sleeping, flag should be internally referring to a specific thread here
- typename C::flag_t old_spin = flag->unset_sleeping();
- if ( ! flag->is_sleeping_val(old_spin) ) {
- KF_TRACE( 5, ( "__kmp_resume_template: T#%d exiting, thread T#%d already awake: flag(%p): "
- "%u => %u\n",
- gtid, target_gtid, flag->get(), old_spin, *flag->get() ) );
- status = pthread_mutex_unlock( &th->th.th_suspend_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_unlock", status );
- return;
- }
- KF_TRACE( 5, ( "__kmp_resume_template: T#%d about to wakeup T#%d, reset sleep bit for flag's loc(%p): "
- "%u => %u\n",
- gtid, target_gtid, flag->get(), old_spin, *flag->get() ) );
- }
- TCW_PTR(th->th.th_sleep_loc, NULL);
-
+ KF_TRACE(5, ("__kmp_resume_template: T#%d about to wakeup T#%d, reset "
+ "sleep bit for flag's loc(%p): "
+ "%u => %u\n",
+ gtid, target_gtid, flag->get(), old_spin, *flag->get()));
+ }
+ TCW_PTR(th->th.th_sleep_loc, NULL);
#ifdef DEBUG_SUSPEND
- {
- char buffer[128];
- __kmp_print_cond( buffer, &th->th.th_suspend_cv );
- __kmp_printf( "__kmp_resume_template: T#%d resuming T#%d: %s\n", gtid, target_gtid, buffer );
- }
+ {
+ char buffer[128];
+ __kmp_print_cond(buffer, &th->th.th_suspend_cv);
+ __kmp_printf("__kmp_resume_template: T#%d resuming T#%d: %s\n", gtid,
+ target_gtid, buffer);
+ }
#endif
-
- status = pthread_cond_signal( &th->th.th_suspend_cv.c_cond );
- KMP_CHECK_SYSFAIL( "pthread_cond_signal", status );
- status = pthread_mutex_unlock( &th->th.th_suspend_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_unlock", status );
- KF_TRACE( 30, ( "__kmp_resume_template: T#%d exiting after signaling wake up for T#%d\n",
- gtid, target_gtid ) );
+ status = pthread_cond_signal(&th->th.th_suspend_cv.c_cond);
+ KMP_CHECK_SYSFAIL("pthread_cond_signal", status);
+ status = pthread_mutex_unlock(&th->th.th_suspend_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_unlock", status);
+ KF_TRACE(30, ("__kmp_resume_template: T#%d exiting after signaling wake up"
+ " for T#%d\n",
+ gtid, target_gtid));
}
void __kmp_resume_32(int target_gtid, kmp_flag_32 *flag) {
- __kmp_resume_template(target_gtid, flag);
+ __kmp_resume_template(target_gtid, flag);
}
void __kmp_resume_64(int target_gtid, kmp_flag_64 *flag) {
- __kmp_resume_template(target_gtid, flag);
+ __kmp_resume_template(target_gtid, flag);
}
void __kmp_resume_oncore(int target_gtid, kmp_flag_oncore *flag) {
- __kmp_resume_template(target_gtid, flag);
+ __kmp_resume_template(target_gtid, flag);
}
#if KMP_USE_MONITOR
-void
-__kmp_resume_monitor()
-{
- KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(USER_resume);
- int status;
+void __kmp_resume_monitor() {
+ KMP_TIME_DEVELOPER_PARTITIONED_BLOCK(USER_resume);
+ int status;
#ifdef KMP_DEBUG
- int gtid = TCR_4(__kmp_init_gtid) ? __kmp_get_gtid() : -1;
- KF_TRACE( 30, ( "__kmp_resume_monitor: T#%d wants to wakeup T#%d enter\n",
- gtid, KMP_GTID_MONITOR ) );
- KMP_DEBUG_ASSERT( gtid != KMP_GTID_MONITOR );
+ int gtid = TCR_4(__kmp_init_gtid) ? __kmp_get_gtid() : -1;
+ KF_TRACE(30, ("__kmp_resume_monitor: T#%d wants to wakeup T#%d enter\n", gtid,
+ KMP_GTID_MONITOR));
+ KMP_DEBUG_ASSERT(gtid != KMP_GTID_MONITOR);
#endif
- status = pthread_mutex_lock( &__kmp_wait_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_lock", status );
+ status = pthread_mutex_lock(&__kmp_wait_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_lock", status);
#ifdef DEBUG_SUSPEND
- {
- char buffer[128];
- __kmp_print_cond( buffer, &__kmp_wait_cv.c_cond );
- __kmp_printf( "__kmp_resume_monitor: T#%d resuming T#%d: %s\n", gtid, KMP_GTID_MONITOR, buffer );
- }
+ {
+ char buffer[128];
+ __kmp_print_cond(buffer, &__kmp_wait_cv.c_cond);
+ __kmp_printf("__kmp_resume_monitor: T#%d resuming T#%d: %s\n", gtid,
+ KMP_GTID_MONITOR, buffer);
+ }
#endif
- status = pthread_cond_signal( &__kmp_wait_cv.c_cond );
- KMP_CHECK_SYSFAIL( "pthread_cond_signal", status );
- status = pthread_mutex_unlock( &__kmp_wait_mx.m_mutex );
- KMP_CHECK_SYSFAIL( "pthread_mutex_unlock", status );
- KF_TRACE( 30, ( "__kmp_resume_monitor: T#%d exiting after signaling wake up for T#%d\n",
- gtid, KMP_GTID_MONITOR ) );
+ status = pthread_cond_signal(&__kmp_wait_cv.c_cond);
+ KMP_CHECK_SYSFAIL("pthread_cond_signal", status);
+ status = pthread_mutex_unlock(&__kmp_wait_mx.m_mutex);
+ KMP_CHECK_SYSFAIL("pthread_mutex_unlock", status);
+ KF_TRACE(30, ("__kmp_resume_monitor: T#%d exiting after signaling wake up"
+ " for T#%d\n",
+ gtid, KMP_GTID_MONITOR));
}
#endif // KMP_USE_MONITOR
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-void
-__kmp_yield( int cond )
-{
- if (!cond)
- return;
+void __kmp_yield(int cond) {
+ if (!cond)
+ return;
#if KMP_USE_MONITOR
- if (!__kmp_yielding_on)
- return;
+ if (!__kmp_yielding_on)
+ return;
#else
- if (__kmp_yield_cycle && !KMP_YIELD_NOW())
- return;
+ if (__kmp_yield_cycle && !KMP_YIELD_NOW())
+ return;
#endif
- sched_yield();
+ sched_yield();
}
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-void
-__kmp_gtid_set_specific( int gtid )
-{
- if( __kmp_init_gtid ) {
- int status;
- status = pthread_setspecific( __kmp_gtid_threadprivate_key, (void*)(intptr_t)(gtid+1) );
- KMP_CHECK_SYSFAIL( "pthread_setspecific", status );
- } else {
- KA_TRACE( 50, ("__kmp_gtid_set_specific: runtime shutdown, returning\n" ) );
- }
-}
-
-int
-__kmp_gtid_get_specific()
-{
- int gtid;
- if ( !__kmp_init_gtid ) {
- KA_TRACE( 50, ("__kmp_gtid_get_specific: runtime shutdown, returning KMP_GTID_SHUTDOWN\n" ) );
- return KMP_GTID_SHUTDOWN;
- }
- gtid = (int)(size_t)pthread_getspecific( __kmp_gtid_threadprivate_key );
- if ( gtid == 0 ) {
- gtid = KMP_GTID_DNE;
- }
- else {
- gtid--;
- }
- KA_TRACE( 50, ("__kmp_gtid_get_specific: key:%d gtid:%d\n",
- __kmp_gtid_threadprivate_key, gtid ));
- return gtid;
-}
-
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-double
-__kmp_read_cpu_time( void )
-{
- /*clock_t t;*/
- struct tms buffer;
-
- /*t =*/ times( & buffer );
-
- return (buffer.tms_utime + buffer.tms_cutime) / (double) CLOCKS_PER_SEC;
-}
-
-int
-__kmp_read_system_info( struct kmp_sys_info *info )
-{
+void __kmp_gtid_set_specific(int gtid) {
+ if (__kmp_init_gtid) {
int status;
- struct rusage r_usage;
-
- memset( info, 0, sizeof( *info ) );
-
- status = getrusage( RUSAGE_SELF, &r_usage);
- KMP_CHECK_SYSFAIL_ERRNO( "getrusage", status );
-
- info->maxrss = r_usage.ru_maxrss; /* the maximum resident set size utilized (in kilobytes) */
- info->minflt = r_usage.ru_minflt; /* the number of page faults serviced without any I/O */
- info->majflt = r_usage.ru_majflt; /* the number of page faults serviced that required I/O */
- info->nswap = r_usage.ru_nswap; /* the number of times a process was "swapped" out of memory */
- info->inblock = r_usage.ru_inblock; /* the number of times the file system had to perform input */
- info->oublock = r_usage.ru_oublock; /* the number of times the file system had to perform output */
- info->nvcsw = r_usage.ru_nvcsw; /* the number of times a context switch was voluntarily */
- info->nivcsw = r_usage.ru_nivcsw; /* the number of times a context switch was forced */
-
- return (status != 0);
+ status = pthread_setspecific(__kmp_gtid_threadprivate_key,
+ (void *)(intptr_t)(gtid + 1));
+ KMP_CHECK_SYSFAIL("pthread_setspecific", status);
+ } else {
+ KA_TRACE(50, ("__kmp_gtid_set_specific: runtime shutdown, returning\n"));
+ }
}
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
-
-void
-__kmp_read_system_time( double *delta )
-{
- double t_ns;
- struct timeval tval;
- struct timespec stop;
- int status;
-
- status = gettimeofday( &tval, NULL );
- KMP_CHECK_SYSFAIL_ERRNO( "gettimeofday", status );
- TIMEVAL_TO_TIMESPEC( &tval, &stop );
- t_ns = TS2NS(stop) - TS2NS(__kmp_sys_timer_data.start);
- *delta = (t_ns * 1e-9);
+int __kmp_gtid_get_specific() {
+ int gtid;
+ if (!__kmp_init_gtid) {
+ KA_TRACE(50, ("__kmp_gtid_get_specific: runtime shutdown, returning "
+ "KMP_GTID_SHUTDOWN\n"));
+ return KMP_GTID_SHUTDOWN;
+ }
+ gtid = (int)(size_t)pthread_getspecific(__kmp_gtid_threadprivate_key);
+ if (gtid == 0) {
+ gtid = KMP_GTID_DNE;
+ } else {
+ gtid--;
+ }
+ KA_TRACE(50, ("__kmp_gtid_get_specific: key:%d gtid:%d\n",
+ __kmp_gtid_threadprivate_key, gtid));
+ return gtid;
}
-void
-__kmp_clear_system_time( void )
-{
- struct timeval tval;
- int status;
- status = gettimeofday( &tval, NULL );
- KMP_CHECK_SYSFAIL_ERRNO( "gettimeofday", status );
- TIMEVAL_TO_TIMESPEC( &tval, &__kmp_sys_timer_data.start );
+double __kmp_read_cpu_time(void) {
+ /*clock_t t;*/
+ struct tms buffer;
+
+ /*t =*/times(&buffer);
+
+ return (buffer.tms_utime + buffer.tms_cutime) / (double)CLOCKS_PER_SEC;
}
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
+int __kmp_read_system_info(struct kmp_sys_info *info) {
+ int status;
+ struct rusage r_usage;
+
+ memset(info, 0, sizeof(*info));
+
+ status = getrusage(RUSAGE_SELF, &r_usage);
+ KMP_CHECK_SYSFAIL_ERRNO("getrusage", status);
+
+ // The maximum resident set size utilized (in kilobytes)
+ info->maxrss = r_usage.ru_maxrss;
+ // The number of page faults serviced without any I/O
+ info->minflt = r_usage.ru_minflt;
+ // The number of page faults serviced that required I/O
+ info->majflt = r_usage.ru_majflt;
+ // The number of times a process was "swapped" out of memory
+ info->nswap = r_usage.ru_nswap;
+ // The number of times the file system had to perform input
+ info->inblock = r_usage.ru_inblock;
+ // The number of times the file system had to perform output
+ info->oublock = r_usage.ru_oublock;
+ // The number of times a context switch was voluntarily
+ info->nvcsw = r_usage.ru_nvcsw;
+ // The number of times a context switch was forced
+ info->nivcsw = r_usage.ru_nivcsw;
+
+ return (status != 0);
+}
+
+void __kmp_read_system_time(double *delta) {
+ double t_ns;
+ struct timeval tval;
+ struct timespec stop;
+ int status;
+
+ status = gettimeofday(&tval, NULL);
+ KMP_CHECK_SYSFAIL_ERRNO("gettimeofday", status);
+ TIMEVAL_TO_TIMESPEC(&tval, &stop);
+ t_ns = TS2NS(stop) - TS2NS(__kmp_sys_timer_data.start);
+ *delta = (t_ns * 1e-9);
+}
+
+void __kmp_clear_system_time(void) {
+ struct timeval tval;
+ int status;
+ status = gettimeofday(&tval, NULL);
+ KMP_CHECK_SYSFAIL_ERRNO("gettimeofday", status);
+ TIMEVAL_TO_TIMESPEC(&tval, &__kmp_sys_timer_data.start);
+}
#ifdef BUILD_TV
-void
-__kmp_tv_threadprivate_store( kmp_info_t *th, void *global_addr, void *thread_addr )
-{
- struct tv_data *p;
+void __kmp_tv_threadprivate_store(kmp_info_t *th, void *global_addr,
+ void *thread_addr) {
+ struct tv_data *p;
- p = (struct tv_data *) __kmp_allocate( sizeof( *p ) );
+ p = (struct tv_data *)__kmp_allocate(sizeof(*p));
- p->u.tp.global_addr = global_addr;
- p->u.tp.thread_addr = thread_addr;
+ p->u.tp.global_addr = global_addr;
+ p->u.tp.thread_addr = thread_addr;
- p->type = (void *) 1;
+ p->type = (void *)1;
- p->next = th->th.th_local.tv_data;
- th->th.th_local.tv_data = p;
+ p->next = th->th.th_local.tv_data;
+ th->th.th_local.tv_data = p;
- if ( p->next == 0 ) {
- int rc = pthread_setspecific( __kmp_tv_key, p );
- KMP_CHECK_SYSFAIL( "pthread_setspecific", rc );
- }
+ if (p->next == 0) {
+ int rc = pthread_setspecific(__kmp_tv_key, p);
+ KMP_CHECK_SYSFAIL("pthread_setspecific", rc);
+ }
}
#endif /* BUILD_TV */
-/* ------------------------------------------------------------------------ */
-/* ------------------------------------------------------------------------ */
+static int __kmp_get_xproc(void) {
-static int
-__kmp_get_xproc( void ) {
+ int r = 0;
- int r = 0;
+#if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
- #if KMP_OS_LINUX || KMP_OS_FREEBSD || KMP_OS_NETBSD
+ r = sysconf(_SC_NPROCESSORS_ONLN);
- r = sysconf( _SC_NPROCESSORS_ONLN );
+#elif KMP_OS_DARWIN
- #elif KMP_OS_DARWIN
+ // Bug C77011 High "OpenMP Threads and number of active cores".
- // Bug C77011 High "OpenMP Threads and number of active cores".
+ // Find the number of available CPUs.
+ kern_return_t rc;
+ host_basic_info_data_t info;
+ mach_msg_type_number_t num = HOST_BASIC_INFO_COUNT;
+ rc = host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&info, &num);
+ if (rc == 0 && num == HOST_BASIC_INFO_COUNT) {
+// Cannot use KA_TRACE() here because this code works before trace support is
+// initialized.
+ r = info.avail_cpus;
+ } else {
+ KMP_WARNING(CantGetNumAvailCPU);
+ KMP_INFORM(AssumedNumCPU);
+ }; // if
- // Find the number of available CPUs.
- kern_return_t rc;
- host_basic_info_data_t info;
- mach_msg_type_number_t num = HOST_BASIC_INFO_COUNT;
- rc = host_info( mach_host_self(), HOST_BASIC_INFO, (host_info_t) & info, & num );
- if ( rc == 0 && num == HOST_BASIC_INFO_COUNT ) {
- // Cannot use KA_TRACE() here because this code works before trace support is
- // initialized.
- r = info.avail_cpus;
- } else {
- KMP_WARNING( CantGetNumAvailCPU );
- KMP_INFORM( AssumedNumCPU );
- }; // if
+#else
- #else
+#error "Unknown or unsupported OS."
- #error "Unknown or unsupported OS."
+#endif
- #endif
-
- return r > 0 ? r : 2; /* guess value of 2 if OS told us 0 */
+ return r > 0 ? r : 2; /* guess value of 2 if OS told us 0 */
} // __kmp_get_xproc
-int
-__kmp_read_from_file( char const *path, char const *format, ... )
-{
- int result;
- va_list args;
+int __kmp_read_from_file(char const *path, char const *format, ...) {
+ int result;
+ va_list args;
- va_start(args, format);
- FILE *f = fopen(path, "rb");
- if ( f == NULL )
- return 0;
- result = vfscanf(f, format, args);
- fclose(f);
+ va_start(args, format);
+ FILE *f = fopen(path, "rb");
+ if (f == NULL)
+ return 0;
+ result = vfscanf(f, format, args);
+ fclose(f);
- return result;
+ return result;
}
-void
-__kmp_runtime_initialize( void )
-{
- int status;
- pthread_mutexattr_t mutex_attr;
- pthread_condattr_t cond_attr;
+void __kmp_runtime_initialize(void) {
+ int status;
+ pthread_mutexattr_t mutex_attr;
+ pthread_condattr_t cond_attr;
- if ( __kmp_init_runtime ) {
- return;
- }; // if
+ if (__kmp_init_runtime) {
+ return;
+ }; // if
- #if ( KMP_ARCH_X86 || KMP_ARCH_X86_64 )
- if ( ! __kmp_cpuinfo.initialized ) {
- __kmp_query_cpuid( &__kmp_cpuinfo );
- }; // if
- #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
+#if (KMP_ARCH_X86 || KMP_ARCH_X86_64)
+ if (!__kmp_cpuinfo.initialized) {
+ __kmp_query_cpuid(&__kmp_cpuinfo);
+ }; // if
+#endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */
- __kmp_xproc = __kmp_get_xproc();
+ __kmp_xproc = __kmp_get_xproc();
- if ( sysconf( _SC_THREADS ) ) {
+ if (sysconf(_SC_THREADS)) {
- /* Query the maximum number of threads */
- __kmp_sys_max_nth = sysconf( _SC_THREAD_THREADS_MAX );
- if ( __kmp_sys_max_nth == -1 ) {
- /* Unlimited threads for NPTL */
- __kmp_sys_max_nth = INT_MAX;
- }
- else if ( __kmp_sys_max_nth <= 1 ) {
- /* Can't tell, just use PTHREAD_THREADS_MAX */
- __kmp_sys_max_nth = KMP_MAX_NTH;
- }
-
- /* Query the minimum stack size */
- __kmp_sys_min_stksize = sysconf( _SC_THREAD_STACK_MIN );
- if ( __kmp_sys_min_stksize <= 1 ) {
- __kmp_sys_min_stksize = KMP_MIN_STKSIZE;
- }
+ /* Query the maximum number of threads */
+ __kmp_sys_max_nth = sysconf(_SC_THREAD_THREADS_MAX);
+ if (__kmp_sys_max_nth == -1) {
+ /* Unlimited threads for NPTL */
+ __kmp_sys_max_nth = INT_MAX;
+ } else if (__kmp_sys_max_nth <= 1) {
+ /* Can't tell, just use PTHREAD_THREADS_MAX */
+ __kmp_sys_max_nth = KMP_MAX_NTH;
}
- /* Set up minimum number of threads to switch to TLS gtid */
- __kmp_tls_gtid_min = KMP_TLS_GTID_MIN;
+ /* Query the minimum stack size */
+ __kmp_sys_min_stksize = sysconf(_SC_THREAD_STACK_MIN);
+ if (__kmp_sys_min_stksize <= 1) {
+ __kmp_sys_min_stksize = KMP_MIN_STKSIZE;
+ }
+ }
- #ifdef BUILD_TV
- {
- int rc = pthread_key_create( & __kmp_tv_key, 0 );
- KMP_CHECK_SYSFAIL( "pthread_key_create", rc );
- }
- #endif
+ /* Set up minimum number of threads to switch to TLS gtid */
+ __kmp_tls_gtid_min = KMP_TLS_GTID_MIN;
- status = pthread_key_create( &__kmp_gtid_threadprivate_key, __kmp_internal_end_dest );
- KMP_CHECK_SYSFAIL( "pthread_key_create", status );
- status = pthread_mutexattr_init( & mutex_attr );
- KMP_CHECK_SYSFAIL( "pthread_mutexattr_init", status );
- status = pthread_mutex_init( & __kmp_wait_mx.m_mutex, & mutex_attr );
- KMP_CHECK_SYSFAIL( "pthread_mutex_init", status );
- status = pthread_condattr_init( & cond_attr );
- KMP_CHECK_SYSFAIL( "pthread_condattr_init", status );
- status = pthread_cond_init( & __kmp_wait_cv.c_cond, & cond_attr );
- KMP_CHECK_SYSFAIL( "pthread_cond_init", status );
+#ifdef BUILD_TV
+ {
+ int rc = pthread_key_create(&__kmp_tv_key, 0);
+ KMP_CHECK_SYSFAIL("pthread_key_create", rc);
+ }
+#endif
+
+ status = pthread_key_create(&__kmp_gtid_threadprivate_key,
+ __kmp_internal_end_dest);
+ KMP_CHECK_SYSFAIL("pthread_key_create", status);
+ status = pthread_mutexattr_init(&mutex_attr);
+ KMP_CHECK_SYSFAIL("pthread_mutexattr_init", status);
+ status = pthread_mutex_init(&__kmp_wait_mx.m_mutex, &mutex_attr);
+ KMP_CHECK_SYSFAIL("pthread_mutex_init", status);
+ status = pthread_condattr_init(&cond_attr);
+ KMP_CHECK_SYSFAIL("pthread_condattr_init", status);
+ status = pthread_cond_init(&__kmp_wait_cv.c_cond, &cond_attr);
+ KMP_CHECK_SYSFAIL("pthread_cond_init", status);
#if USE_ITT_BUILD
- __kmp_itt_initialize();
+ __kmp_itt_initialize();
#endif /* USE_ITT_BUILD */
- __kmp_init_runtime = TRUE;
+ __kmp_init_runtime = TRUE;
}
-void
-__kmp_runtime_destroy( void )
-{
- int status;
+void __kmp_runtime_destroy(void) {
+ int status;
- if ( ! __kmp_init_runtime ) {
- return; // Nothing to do.
- };
+ if (!__kmp_init_runtime) {
+ return; // Nothing to do.
+ };
#if USE_ITT_BUILD
- __kmp_itt_destroy();
+ __kmp_itt_destroy();
#endif /* USE_ITT_BUILD */
- status = pthread_key_delete( __kmp_gtid_threadprivate_key );
- KMP_CHECK_SYSFAIL( "pthread_key_delete", status );
- #ifdef BUILD_TV
- status = pthread_key_delete( __kmp_tv_key );
- KMP_CHECK_SYSFAIL( "pthread_key_delete", status );
- #endif
+ status = pthread_key_delete(__kmp_gtid_threadprivate_key);
+ KMP_CHECK_SYSFAIL("pthread_key_delete", status);
+#ifdef BUILD_TV
+ status = pthread_key_delete(__kmp_tv_key);
+ KMP_CHECK_SYSFAIL("pthread_key_delete", status);
+#endif
- status = pthread_mutex_destroy( & __kmp_wait_mx.m_mutex );
- if ( status != 0 && status != EBUSY ) {
- KMP_SYSFAIL( "pthread_mutex_destroy", status );
- }
- status = pthread_cond_destroy( & __kmp_wait_cv.c_cond );
- if ( status != 0 && status != EBUSY ) {
- KMP_SYSFAIL( "pthread_cond_destroy", status );
- }
- #if KMP_AFFINITY_SUPPORTED
- __kmp_affinity_uninitialize();
- #endif
+ status = pthread_mutex_destroy(&__kmp_wait_mx.m_mutex);
+ if (status != 0 && status != EBUSY) {
+ KMP_SYSFAIL("pthread_mutex_destroy", status);
+ }
+ status = pthread_cond_destroy(&__kmp_wait_cv.c_cond);
+ if (status != 0 && status != EBUSY) {
+ KMP_SYSFAIL("pthread_cond_destroy", status);
+ }
+#if KMP_AFFINITY_SUPPORTED
+ __kmp_affinity_uninitialize();
+#endif
- __kmp_init_runtime = FALSE;
+ __kmp_init_runtime = FALSE;
}
-
/* Put the thread to sleep for a time period */
/* NOTE: not currently used anywhere */
-void
-__kmp_thread_sleep( int millis )
-{
- sleep( ( millis + 500 ) / 1000 );
-}
+void __kmp_thread_sleep(int millis) { sleep((millis + 500) / 1000); }
/* Calculate the elapsed wall clock time for the user */
-void
-__kmp_elapsed( double *t )
-{
- int status;
-# ifdef FIX_SGI_CLOCK
- struct timespec ts;
+void __kmp_elapsed(double *t) {
+ int status;
+#ifdef FIX_SGI_CLOCK
+ struct timespec ts;
- status = clock_gettime( CLOCK_PROCESS_CPUTIME_ID, &ts );
- KMP_CHECK_SYSFAIL_ERRNO( "clock_gettime", status );
- *t = (double) ts.tv_nsec * (1.0 / (double) KMP_NSEC_PER_SEC) +
- (double) ts.tv_sec;
-# else
- struct timeval tv;
+ status = clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
+ KMP_CHECK_SYSFAIL_ERRNO("clock_gettime", status);
+ *t =
+ (double)ts.tv_nsec * (1.0 / (double)KMP_NSEC_PER_SEC) + (double)ts.tv_sec;
+#else
+ struct timeval tv;
- status = gettimeofday( & tv, NULL );
- KMP_CHECK_SYSFAIL_ERRNO( "gettimeofday", status );
- *t = (double) tv.tv_usec * (1.0 / (double) KMP_USEC_PER_SEC) +
- (double) tv.tv_sec;
-# endif
+ status = gettimeofday(&tv, NULL);
+ KMP_CHECK_SYSFAIL_ERRNO("gettimeofday", status);
+ *t =
+ (double)tv.tv_usec * (1.0 / (double)KMP_USEC_PER_SEC) + (double)tv.tv_sec;
+#endif
}
/* Calculate the elapsed wall clock tick for the user */
-void
-__kmp_elapsed_tick( double *t )
-{
- *t = 1 / (double) CLOCKS_PER_SEC;
-}
+void __kmp_elapsed_tick(double *t) { *t = 1 / (double)CLOCKS_PER_SEC; }
/* Return the current time stamp in nsec */
-kmp_uint64
-__kmp_now_nsec()
-{
- struct timeval t;
- gettimeofday(&t, NULL);
- return KMP_NSEC_PER_SEC*t.tv_sec + 1000*t.tv_usec;
+kmp_uint64 __kmp_now_nsec() {
+ struct timeval t;
+ gettimeofday(&t, NULL);
+ return KMP_NSEC_PER_SEC * t.tv_sec + 1000 * t.tv_usec;
}
#if KMP_ARCH_X86 || KMP_ARCH_X86_64
/* Measure clock ticks per millisecond */
-void
-__kmp_initialize_system_tick()
-{
- kmp_uint64 delay = 100000; // 50~100 usec on most machines.
- kmp_uint64 nsec = __kmp_now_nsec();
- kmp_uint64 goal = __kmp_hardware_timestamp() + delay;
- kmp_uint64 now;
- while ((now = __kmp_hardware_timestamp()) < goal);
- __kmp_ticks_per_msec = (kmp_uint64)(1e6 * (delay + (now - goal)) / (__kmp_now_nsec() - nsec));
+void __kmp_initialize_system_tick() {
+ kmp_uint64 delay = 100000; // 50~100 usec on most machines.
+ kmp_uint64 nsec = __kmp_now_nsec();
+ kmp_uint64 goal = __kmp_hardware_timestamp() + delay;
+ kmp_uint64 now;
+ while ((now = __kmp_hardware_timestamp()) < goal)
+ ;
+ __kmp_ticks_per_msec =
+ (kmp_uint64)(1e6 * (delay + (now - goal)) / (__kmp_now_nsec() - nsec));
}
#endif
-/*
- Determine whether the given address is mapped into the current address space.
-*/
+/* Determine whether the given address is mapped into the current address
+ space. */
-int
-__kmp_is_address_mapped( void * addr ) {
+int __kmp_is_address_mapped(void *addr) {
- int found = 0;
- int rc;
+ int found = 0;
+ int rc;
- #if KMP_OS_LINUX || KMP_OS_FREEBSD
+#if KMP_OS_LINUX || KMP_OS_FREEBSD
- /*
- On Linux* OS, read the /proc/<pid>/maps pseudo-file to get all the address ranges mapped
- into the address space.
- */
+ /* On Linux* OS, read the /proc/<pid>/maps pseudo-file to get all the address
+ ranges mapped into the address space. */
- char * name = __kmp_str_format( "/proc/%d/maps", getpid() );
- FILE * file = NULL;
+ char *name = __kmp_str_format("/proc/%d/maps", getpid());
+ FILE *file = NULL;
- file = fopen( name, "r" );
- KMP_ASSERT( file != NULL );
+ file = fopen(name, "r");
+ KMP_ASSERT(file != NULL);
- for ( ; ; ) {
+ for (;;) {
- void * beginning = NULL;
- void * ending = NULL;
- char perms[ 5 ];
+ void *beginning = NULL;
+ void *ending = NULL;
+ char perms[5];
- rc = fscanf( file, "%p-%p %4s %*[^\n]\n", & beginning, & ending, perms );
- if ( rc == EOF ) {
- break;
- }; // if
- KMP_ASSERT( rc == 3 && KMP_STRLEN( perms ) == 4 ); // Make sure all fields are read.
+ rc = fscanf(file, "%p-%p %4s %*[^\n]\n", &beginning, &ending, perms);
+ if (rc == EOF) {
+ break;
+ }; // if
+ KMP_ASSERT(rc == 3 &&
+ KMP_STRLEN(perms) == 4); // Make sure all fields are read.
- // Ending address is not included in the region, but beginning is.
- if ( ( addr >= beginning ) && ( addr < ending ) ) {
- perms[ 2 ] = 0; // 3th and 4th character does not matter.
- if ( strcmp( perms, "rw" ) == 0 ) {
- // Memory we are looking for should be readable and writable.
- found = 1;
- }; // if
- break;
- }; // if
-
- }; // forever
-
- // Free resources.
- fclose( file );
- KMP_INTERNAL_FREE( name );
-
- #elif KMP_OS_DARWIN
-
- /*
- On OS X*, /proc pseudo filesystem is not available. Try to read memory using vm
- interface.
- */
-
- int buffer;
- vm_size_t count;
- rc =
- vm_read_overwrite(
- mach_task_self(), // Task to read memory of.
- (vm_address_t)( addr ), // Address to read from.
- 1, // Number of bytes to be read.
- (vm_address_t)( & buffer ), // Address of buffer to save read bytes in.
- & count // Address of var to save number of read bytes in.
- );
- if ( rc == 0 ) {
- // Memory successfully read.
- found = 1;
- }; // if
-
- #elif KMP_OS_FREEBSD || KMP_OS_NETBSD
-
- // FIXME(FreeBSD, NetBSD): Implement this
+ // Ending address is not included in the region, but beginning is.
+ if ((addr >= beginning) && (addr < ending)) {
+ perms[2] = 0; // 3th and 4th character does not matter.
+ if (strcmp(perms, "rw") == 0) {
+ // Memory we are looking for should be readable and writable.
found = 1;
+ }; // if
+ break;
+ }; // if
- #else
+ }; // forever
- #error "Unknown or unsupported OS"
+ // Free resources.
+ fclose(file);
+ KMP_INTERNAL_FREE(name);
- #endif
+#elif KMP_OS_DARWIN
- return found;
+ /* On OS X*, /proc pseudo filesystem is not available. Try to read memory
+ using vm interface. */
+
+ int buffer;
+ vm_size_t count;
+ rc = vm_read_overwrite(
+ mach_task_self(), // Task to read memory of.
+ (vm_address_t)(addr), // Address to read from.
+ 1, // Number of bytes to be read.
+ (vm_address_t)(&buffer), // Address of buffer to save read bytes in.
+ &count // Address of var to save number of read bytes in.
+ );
+ if (rc == 0) {
+ // Memory successfully read.
+ found = 1;
+ }; // if
+
+#elif KMP_OS_FREEBSD || KMP_OS_NETBSD
+
+ // FIXME(FreeBSD, NetBSD): Implement this
+ found = 1;
+
+#else
+
+#error "Unknown or unsupported OS"
+
+#endif
+
+ return found;
} // __kmp_is_address_mapped
#ifdef USE_LOAD_BALANCE
-
-# if KMP_OS_DARWIN
+#if KMP_OS_DARWIN
// The function returns the rounded value of the system load average
// during given time interval which depends on the value of
// __kmp_load_balance_interval variable (default is 60 sec, other values
// may be 300 sec or 900 sec).
// It returns -1 in case of error.
-int
-__kmp_get_load_balance( int max )
-{
- double averages[3];
- int ret_avg = 0;
+int __kmp_get_load_balance(int max) {
+ double averages[3];
+ int ret_avg = 0;
- int res = getloadavg( averages, 3 );
+ int res = getloadavg(averages, 3);
- //Check __kmp_load_balance_interval to determine which of averages to use.
- // getloadavg() may return the number of samples less than requested that is
- // less than 3.
- if ( __kmp_load_balance_interval < 180 && ( res >= 1 ) ) {
- ret_avg = averages[0];// 1 min
- } else if ( ( __kmp_load_balance_interval >= 180
- && __kmp_load_balance_interval < 600 ) && ( res >= 2 ) ) {
- ret_avg = averages[1];// 5 min
- } else if ( ( __kmp_load_balance_interval >= 600 ) && ( res == 3 ) ) {
- ret_avg = averages[2];// 15 min
- } else {// Error occurred
- return -1;
- }
+ // Check __kmp_load_balance_interval to determine which of averages to use.
+ // getloadavg() may return the number of samples less than requested that is
+ // less than 3.
+ if (__kmp_load_balance_interval < 180 && (res >= 1)) {
+ ret_avg = averages[0]; // 1 min
+ } else if ((__kmp_load_balance_interval >= 180 &&
+ __kmp_load_balance_interval < 600) &&
+ (res >= 2)) {
+ ret_avg = averages[1]; // 5 min
+ } else if ((__kmp_load_balance_interval >= 600) && (res == 3)) {
+ ret_avg = averages[2]; // 15 min
+ } else { // Error occurred
+ return -1;
+ }
- return ret_avg;
+ return ret_avg;
}
-# else // Linux* OS
+#else // Linux* OS
-// The fuction returns number of running (not sleeping) threads, or -1 in case of error.
-// Error could be reported if Linux* OS kernel too old (without "/proc" support).
-// Counting running threads stops if max running threads encountered.
-int
-__kmp_get_load_balance( int max )
-{
- static int permanent_error = 0;
+// The fuction returns number of running (not sleeping) threads, or -1 in case
+// of error. Error could be reported if Linux* OS kernel too old (without
+// "/proc" support). Counting running threads stops if max running threads
+// encountered.
+int __kmp_get_load_balance(int max) {
+ static int permanent_error = 0;
+ static int glb_running_threads = 0; // Saved count of the running threads for
+ // the thread balance algortihm
+ static double glb_call_time = 0; /* Thread balance algorithm call time */
- static int glb_running_threads = 0; /* Saved count of the running threads for the thread balance algortihm */
- static double glb_call_time = 0; /* Thread balance algorithm call time */
+ int running_threads = 0; // Number of running threads in the system.
- int running_threads = 0; // Number of running threads in the system.
+ DIR *proc_dir = NULL; // Handle of "/proc/" directory.
+ struct dirent *proc_entry = NULL;
- DIR * proc_dir = NULL; // Handle of "/proc/" directory.
- struct dirent * proc_entry = NULL;
+ kmp_str_buf_t task_path; // "/proc/<pid>/task/<tid>/" path.
+ DIR *task_dir = NULL; // Handle of "/proc/<pid>/task/<tid>/" directory.
+ struct dirent *task_entry = NULL;
+ int task_path_fixed_len;
- kmp_str_buf_t task_path; // "/proc/<pid>/task/<tid>/" path.
- DIR * task_dir = NULL; // Handle of "/proc/<pid>/task/<tid>/" directory.
- struct dirent * task_entry = NULL;
- int task_path_fixed_len;
+ kmp_str_buf_t stat_path; // "/proc/<pid>/task/<tid>/stat" path.
+ int stat_file = -1;
+ int stat_path_fixed_len;
- kmp_str_buf_t stat_path; // "/proc/<pid>/task/<tid>/stat" path.
- int stat_file = -1;
- int stat_path_fixed_len;
+ int total_processes = 0; // Total number of processes in system.
+ int total_threads = 0; // Total number of threads in system.
- int total_processes = 0; // Total number of processes in system.
- int total_threads = 0; // Total number of threads in system.
+ double call_time = 0.0;
- double call_time = 0.0;
+ __kmp_str_buf_init(&task_path);
+ __kmp_str_buf_init(&stat_path);
- __kmp_str_buf_init( & task_path );
- __kmp_str_buf_init( & stat_path );
+ __kmp_elapsed(&call_time);
- __kmp_elapsed( & call_time );
+ if (glb_call_time &&
+ (call_time - glb_call_time < __kmp_load_balance_interval)) {
+ running_threads = glb_running_threads;
+ goto finish;
+ }
- if ( glb_call_time &&
- ( call_time - glb_call_time < __kmp_load_balance_interval ) ) {
- running_threads = glb_running_threads;
- goto finish;
- }
+ glb_call_time = call_time;
- glb_call_time = call_time;
+ // Do not spend time on scanning "/proc/" if we have a permanent error.
+ if (permanent_error) {
+ running_threads = -1;
+ goto finish;
+ }; // if
- // Do not spend time on scanning "/proc/" if we have a permanent error.
- if ( permanent_error ) {
- running_threads = -1;
- goto finish;
- }; // if
+ if (max <= 0) {
+ max = INT_MAX;
+ }; // if
- if ( max <= 0 ) {
- max = INT_MAX;
- }; // if
+ // Open "/proc/" directory.
+ proc_dir = opendir("/proc");
+ if (proc_dir == NULL) {
+ // Cannot open "/prroc/". Probably the kernel does not support it. Return an
+ // error now and in subsequent calls.
+ running_threads = -1;
+ permanent_error = 1;
+ goto finish;
+ }; // if
- // Open "/proc/" directory.
- proc_dir = opendir( "/proc" );
- if ( proc_dir == NULL ) {
- // Cannot open "/prroc/". Probably the kernel does not support it. Return an error now and
- // in subsequent calls.
- running_threads = -1;
- permanent_error = 1;
- goto finish;
- }; // if
+ // Initialize fixed part of task_path. This part will not change.
+ __kmp_str_buf_cat(&task_path, "/proc/", 6);
+ task_path_fixed_len = task_path.used; // Remember number of used characters.
- // Initialize fixed part of task_path. This part will not change.
- __kmp_str_buf_cat( & task_path, "/proc/", 6 );
- task_path_fixed_len = task_path.used; // Remember number of used characters.
+ proc_entry = readdir(proc_dir);
+ while (proc_entry != NULL) {
+ // Proc entry is a directory and name starts with a digit. Assume it is a
+ // process' directory.
+ if (proc_entry->d_type == DT_DIR && isdigit(proc_entry->d_name[0])) {
- proc_entry = readdir( proc_dir );
- while ( proc_entry != NULL ) {
- // Proc entry is a directory and name starts with a digit. Assume it is a process'
- // directory.
- if ( proc_entry->d_type == DT_DIR && isdigit( proc_entry->d_name[ 0 ] ) ) {
+ ++total_processes;
+ // Make sure init process is the very first in "/proc", so we can replace
+ // strcmp( proc_entry->d_name, "1" ) == 0 with simpler total_processes ==
+ // 1. We are going to check that total_processes == 1 => d_name == "1" is
+ // true (where "=>" is implication). Since C++ does not have => operator,
+ // let us replace it with its equivalent: a => b == ! a || b.
+ KMP_DEBUG_ASSERT(total_processes != 1 ||
+ strcmp(proc_entry->d_name, "1") == 0);
- ++ total_processes;
- // Make sure init process is the very first in "/proc", so we can replace
- // strcmp( proc_entry->d_name, "1" ) == 0 with simpler total_processes == 1.
- // We are going to check that total_processes == 1 => d_name == "1" is true (where
- // "=>" is implication). Since C++ does not have => operator, let us replace it with its
- // equivalent: a => b == ! a || b.
- KMP_DEBUG_ASSERT( total_processes != 1 || strcmp( proc_entry->d_name, "1" ) == 0 );
+ // Construct task_path.
+ task_path.used = task_path_fixed_len; // Reset task_path to "/proc/".
+ __kmp_str_buf_cat(&task_path, proc_entry->d_name,
+ KMP_STRLEN(proc_entry->d_name));
+ __kmp_str_buf_cat(&task_path, "/task", 5);
- // Construct task_path.
- task_path.used = task_path_fixed_len; // Reset task_path to "/proc/".
- __kmp_str_buf_cat( & task_path, proc_entry->d_name, KMP_STRLEN( proc_entry->d_name ) );
- __kmp_str_buf_cat( & task_path, "/task", 5 );
+ task_dir = opendir(task_path.str);
+ if (task_dir == NULL) {
+ // Process can finish between reading "/proc/" directory entry and
+ // opening process' "task/" directory. So, in general case we should not
+ // complain, but have to skip this process and read the next one. But on
+ // systems with no "task/" support we will spend lot of time to scan
+ // "/proc/" tree again and again without any benefit. "init" process
+ // (its pid is 1) should exist always, so, if we cannot open
+ // "/proc/1/task/" directory, it means "task/" is not supported by
+ // kernel. Report an error now and in the future.
+ if (strcmp(proc_entry->d_name, "1") == 0) {
+ running_threads = -1;
+ permanent_error = 1;
+ goto finish;
+ }; // if
+ } else {
+ // Construct fixed part of stat file path.
+ __kmp_str_buf_clear(&stat_path);
+ __kmp_str_buf_cat(&stat_path, task_path.str, task_path.used);
+ __kmp_str_buf_cat(&stat_path, "/", 1);
+ stat_path_fixed_len = stat_path.used;
- task_dir = opendir( task_path.str );
- if ( task_dir == NULL ) {
- // Process can finish between reading "/proc/" directory entry and opening process'
- // "task/" directory. So, in general case we should not complain, but have to skip
- // this process and read the next one.
- // But on systems with no "task/" support we will spend lot of time to scan "/proc/"
- // tree again and again without any benefit. "init" process (its pid is 1) should
- // exist always, so, if we cannot open "/proc/1/task/" directory, it means "task/"
- // is not supported by kernel. Report an error now and in the future.
- if ( strcmp( proc_entry->d_name, "1" ) == 0 ) {
- running_threads = -1;
- permanent_error = 1;
- goto finish;
- }; // if
+ task_entry = readdir(task_dir);
+ while (task_entry != NULL) {
+ // It is a directory and name starts with a digit.
+ if (proc_entry->d_type == DT_DIR && isdigit(task_entry->d_name[0])) {
+ ++total_threads;
+
+ // Consruct complete stat file path. Easiest way would be:
+ // __kmp_str_buf_print( & stat_path, "%s/%s/stat", task_path.str,
+ // task_entry->d_name );
+ // but seriae of __kmp_str_buf_cat works a bit faster.
+ stat_path.used =
+ stat_path_fixed_len; // Reset stat path to its fixed part.
+ __kmp_str_buf_cat(&stat_path, task_entry->d_name,
+ KMP_STRLEN(task_entry->d_name));
+ __kmp_str_buf_cat(&stat_path, "/stat", 5);
+
+ // Note: Low-level API (open/read/close) is used. High-level API
+ // (fopen/fclose) works ~ 30 % slower.
+ stat_file = open(stat_path.str, O_RDONLY);
+ if (stat_file == -1) {
+ // We cannot report an error because task (thread) can terminate
+ // just before reading this file.
} else {
- // Construct fixed part of stat file path.
- __kmp_str_buf_clear( & stat_path );
- __kmp_str_buf_cat( & stat_path, task_path.str, task_path.used );
- __kmp_str_buf_cat( & stat_path, "/", 1 );
- stat_path_fixed_len = stat_path.used;
+ /* Content of "stat" file looks like:
+ 24285 (program) S ...
- task_entry = readdir( task_dir );
- while ( task_entry != NULL ) {
- // It is a directory and name starts with a digit.
- if ( proc_entry->d_type == DT_DIR && isdigit( task_entry->d_name[ 0 ] ) ) {
+ It is a single line (if program name does not include funny
+ symbols). First number is a thread id, then name of executable
+ file name in paretheses, then state of the thread. We need just
+ thread state.
- ++ total_threads;
+ Good news: Length of program name is 15 characters max. Longer
+ names are truncated.
- // Consruct complete stat file path. Easiest way would be:
- // __kmp_str_buf_print( & stat_path, "%s/%s/stat", task_path.str, task_entry->d_name );
- // but seriae of __kmp_str_buf_cat works a bit faster.
- stat_path.used = stat_path_fixed_len; // Reset stat path to its fixed part.
- __kmp_str_buf_cat( & stat_path, task_entry->d_name, KMP_STRLEN( task_entry->d_name ) );
- __kmp_str_buf_cat( & stat_path, "/stat", 5 );
+ Thus, we need rather short buffer: 15 chars for program name +
+ 2 parenthesis, + 3 spaces + ~7 digits of pid = 37.
- // Note: Low-level API (open/read/close) is used. High-level API
- // (fopen/fclose) works ~ 30 % slower.
- stat_file = open( stat_path.str, O_RDONLY );
- if ( stat_file == -1 ) {
- // We cannot report an error because task (thread) can terminate just
- // before reading this file.
- } else {
- /*
- Content of "stat" file looks like:
+ Bad news: Program name may contain special symbols like space,
+ closing parenthesis, or even new line. This makes parsing
+ "stat" file not 100 % reliable. In case of fanny program names
+ parsing may fail (report incorrect thread state).
- 24285 (program) S ...
-
- It is a single line (if program name does not include fanny
- symbols). First number is a thread id, then name of executable file
- name in paretheses, then state of the thread. We need just thread
- state.
-
- Good news: Length of program name is 15 characters max. Longer
- names are truncated.
-
- Thus, we need rather short buffer: 15 chars for program name +
- 2 parenthesis, + 3 spaces + ~7 digits of pid = 37.
-
- Bad news: Program name may contain special symbols like space,
- closing parenthesis, or even new line. This makes parsing "stat"
- file not 100 % reliable. In case of fanny program names parsing
- may fail (report incorrect thread state).
-
- Parsing "status" file looks more promissing (due to different
- file structure and escaping special symbols) but reading and
- parsing of "status" file works slower.
-
- -- ln
- */
- char buffer[ 65 ];
- int len;
- len = read( stat_file, buffer, sizeof( buffer ) - 1 );
- if ( len >= 0 ) {
- buffer[ len ] = 0;
- // Using scanf:
- // sscanf( buffer, "%*d (%*s) %c ", & state );
- // looks very nice, but searching for a closing parenthesis works a
- // bit faster.
- char * close_parent = strstr( buffer, ") " );
- if ( close_parent != NULL ) {
- char state = * ( close_parent + 2 );
- if ( state == 'R' ) {
- ++ running_threads;
- if ( running_threads >= max ) {
- goto finish;
- }; // if
- }; // if
- }; // if
- }; // if
- close( stat_file );
- stat_file = -1;
- }; // if
+ Parsing "status" file looks more promissing (due to different
+ file structure and escaping special symbols) but reading and
+ parsing of "status" file works slower.
+ -- ln
+ */
+ char buffer[65];
+ int len;
+ len = read(stat_file, buffer, sizeof(buffer) - 1);
+ if (len >= 0) {
+ buffer[len] = 0;
+ // Using scanf:
+ // sscanf( buffer, "%*d (%*s) %c ", & state );
+ // looks very nice, but searching for a closing parenthesis
+ // works a bit faster.
+ char *close_parent = strstr(buffer, ") ");
+ if (close_parent != NULL) {
+ char state = *(close_parent + 2);
+ if (state == 'R') {
+ ++running_threads;
+ if (running_threads >= max) {
+ goto finish;
}; // if
- task_entry = readdir( task_dir );
- }; // while
- closedir( task_dir );
- task_dir = NULL;
+ }; // if
+ }; // if
+ }; // if
+ close(stat_file);
+ stat_file = -1;
}; // if
- }; // if
- proc_entry = readdir( proc_dir );
- }; // while
+ }; // if
+ task_entry = readdir(task_dir);
+ }; // while
+ closedir(task_dir);
+ task_dir = NULL;
+ }; // if
+ }; // if
+ proc_entry = readdir(proc_dir);
+ }; // while
- //
- // There _might_ be a timing hole where the thread executing this
- // code get skipped in the load balance, and running_threads is 0.
- // Assert in the debug builds only!!!
- //
- KMP_DEBUG_ASSERT( running_threads > 0 );
- if ( running_threads <= 0 ) {
- running_threads = 1;
- }
+ // There _might_ be a timing hole where the thread executing this
+ // code get skipped in the load balance, and running_threads is 0.
+ // Assert in the debug builds only!!!
+ KMP_DEBUG_ASSERT(running_threads > 0);
+ if (running_threads <= 0) {
+ running_threads = 1;
+ }
- finish: // Clean up and exit.
- if ( proc_dir != NULL ) {
- closedir( proc_dir );
- }; // if
- __kmp_str_buf_free( & task_path );
- if ( task_dir != NULL ) {
- closedir( task_dir );
- }; // if
- __kmp_str_buf_free( & stat_path );
- if ( stat_file != -1 ) {
- close( stat_file );
- }; // if
+finish: // Clean up and exit.
+ if (proc_dir != NULL) {
+ closedir(proc_dir);
+ }; // if
+ __kmp_str_buf_free(&task_path);
+ if (task_dir != NULL) {
+ closedir(task_dir);
+ }; // if
+ __kmp_str_buf_free(&stat_path);
+ if (stat_file != -1) {
+ close(stat_file);
+ }; // if
- glb_running_threads = running_threads;
+ glb_running_threads = running_threads;
- return running_threads;
+ return running_threads;
} // __kmp_get_load_balance
-# endif // KMP_OS_DARWIN
+#endif // KMP_OS_DARWIN
#endif // USE_LOAD_BALANCE
@@ -2520,15 +2302,13 @@
// we really only need the case with 1 argument, because CLANG always build
// a struct of pointers to shared variables referenced in the outlined function
-int
-__kmp_invoke_microtask( microtask_t pkfn,
- int gtid, int tid,
- int argc, void *p_argv[]
+int __kmp_invoke_microtask(microtask_t pkfn, int gtid, int tid, int argc,
+ void *p_argv[]
#if OMPT_SUPPORT
- , void **exit_frame_ptr
+ ,
+ void **exit_frame_ptr
#endif
-)
-{
+ ) {
#if OMPT_SUPPORT
*exit_frame_ptr = __builtin_frame_address(0);
#endif
@@ -2612,4 +2392,3 @@
#endif
// end of file //
-