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atm_gcc_atomic.h
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33 
34 #ifndef GRPC_SUPPORT_ATM_GCC_ATOMIC_H
35 #define GRPC_SUPPORT_ATM_GCC_ATOMIC_H
36 
37 /* atm_platform.h for gcc and gcc-like compilers with the
38  __atomic_* interface. */
40 
42 
43 #define gpr_atm_full_barrier() (__atomic_thread_fence(__ATOMIC_SEQ_CST))
44 
45 #define gpr_atm_acq_load(p) (__atomic_load_n((p), __ATOMIC_ACQUIRE))
46 #define gpr_atm_no_barrier_load(p) (__atomic_load_n((p), __ATOMIC_RELAXED))
47 #define gpr_atm_rel_store(p, value) \
48  (__atomic_store_n((p), (gpr_intptr)(value), __ATOMIC_RELEASE))
49 #define gpr_atm_no_barrier_store(p, value) \
50  (__atomic_store_n((p), (gpr_intptr)(value), __ATOMIC_RELAXED))
51 
52 #define gpr_atm_no_barrier_fetch_add(p, delta) \
53  (__atomic_fetch_add((p), (gpr_intptr)(delta), __ATOMIC_RELAXED))
54 #define gpr_atm_full_fetch_add(p, delta) \
55  (__atomic_fetch_add((p), (gpr_intptr)(delta), __ATOMIC_ACQ_REL))
56 
57 static __inline int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
58  return __atomic_compare_exchange_n(p, &o, n, 0, __ATOMIC_RELAXED,
59  __ATOMIC_RELAXED);
60 }
61 
62 static __inline int gpr_atm_acq_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
63  return __atomic_compare_exchange_n(p, &o, n, 0, __ATOMIC_ACQUIRE,
64  __ATOMIC_RELAXED);
65 }
66 
67 static __inline int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
68  return __atomic_compare_exchange_n(p, &o, n, 0, __ATOMIC_RELEASE,
69  __ATOMIC_RELAXED);
70 }
71 
72 #endif /* GRPC_SUPPORT_ATM_GCC_ATOMIC_H */
intptr_t gpr_intptr
Definition: port_platform.h:312
#define gpr_atm_acq_cas(p, o, n)
Definition: atm_gcc_sync.h:84
#define gpr_atm_no_barrier_cas(p, o, n)
Definition: atm_gcc_sync.h:83
#define gpr_atm_rel_cas(p, o, n)
Definition: atm_gcc_sync.h:85
gpr_intptr gpr_atm
Definition: atm_gcc_atomic.h:41