diff options
Diffstat (limited to 'include/grpc/impl/codegen/atm_gcc_sync.h')
| -rw-r--r-- | include/grpc/impl/codegen/atm_gcc_sync.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/grpc/impl/codegen/atm_gcc_sync.h b/include/grpc/impl/codegen/atm_gcc_sync.h index 915b09fb0c..9aa2b43189 100644 --- a/include/grpc/impl/codegen/atm_gcc_sync.h +++ b/include/grpc/impl/codegen/atm_gcc_sync.h @@ -84,4 +84,12 @@ static __inline void gpr_atm_no_barrier_store(gpr_atm *p, gpr_atm value) { #define gpr_atm_acq_cas(p, o, n) (__sync_bool_compare_and_swap((p), (o), (n))) #define gpr_atm_rel_cas(p, o, n) gpr_atm_acq_cas((p), (o), (n)) +static __inline gpr_atm gpr_atm_full_xchg(gpr_atm *p, gpr_atm n) { + gpr_atm cur; + do { + cur = gpr_atm_acq_load(p); + } while (!gpr_atm_rel_cas(p, cur, n)); + return cur; +} + #endif /* GRPC_IMPL_CODEGEN_ATM_GCC_SYNC_H */ |