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/*
*
* Copyright 2015-2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
#define GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H
/* atm_platform.h for gcc and gcc-like compilers with the
__atomic_* interface. */
#include <grpc/impl/codegen/port_platform.h>
typedef intptr_t gpr_atm;
#define gpr_atm_full_barrier() (__atomic_thread_fence(__ATOMIC_SEQ_CST))
#define gpr_atm_acq_load(p) (__atomic_load_n((p), __ATOMIC_ACQUIRE))
#define gpr_atm_no_barrier_load(p) (__atomic_load_n((p), __ATOMIC_RELAXED))
#define gpr_atm_rel_store(p, value) \
(__atomic_store_n((p), (intptr_t)(value), __ATOMIC_RELEASE))
#define gpr_atm_no_barrier_store(p, value) \
(__atomic_store_n((p), (intptr_t)(value), __ATOMIC_RELAXED))
#define gpr_atm_no_barrier_fetch_add(p, delta) \
(__atomic_fetch_add((p), (intptr_t)(delta), __ATOMIC_RELAXED))
#define gpr_atm_full_fetch_add(p, delta) \
(__atomic_fetch_add((p), (intptr_t)(delta), __ATOMIC_ACQ_REL))
static __inline int gpr_atm_no_barrier_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return __atomic_compare_exchange_n(p, &o, n, 0, __ATOMIC_RELAXED,
__ATOMIC_RELAXED);
}
static __inline int gpr_atm_acq_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return __atomic_compare_exchange_n(p, &o, n, 0, __ATOMIC_ACQUIRE,
__ATOMIC_RELAXED);
}
static __inline int gpr_atm_rel_cas(gpr_atm *p, gpr_atm o, gpr_atm n) {
return __atomic_compare_exchange_n(p, &o, n, 0, __ATOMIC_RELEASE,
__ATOMIC_RELAXED);
}
#endif /* GRPC_IMPL_CODEGEN_ATM_GCC_ATOMIC_H */
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