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Support using compielr intrinsics for atomic operations

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Works with GCC and most likely clang
This commit is contained in:
Thomas Rodgers
2015-01-28 10:27:15 -06:00
parent 8c8d23c761
commit e6c45f5376
4 changed files with 48 additions and 3 deletions
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9
src/atomic_counter.hpp
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@@ -25,6 +25,8 @@
#if defined ZMQ_FORCE_MUTEXES
#define ZMQ_ATOMIC_COUNTER_MUTEX
#elif defined ZMQ_HAVE_ATOMIC_INTRINSICS
#define ZMQ_ATOMIC_INTRINSIC
#elif (defined __i386__ || defined __x86_64__) && defined __GNUC__
#define ZMQ_ATOMIC_COUNTER_X86
#elif defined __ARM_ARCH_7A__ && defined __GNUC__
@@ -83,11 +85,13 @@ namespace zmq
#if defined ZMQ_ATOMIC_COUNTER_WINDOWS
old_value = InterlockedExchangeAdd ((LONG*) &value, increment_);
#elif defined ZMQ_ATOMIC_INTRINSIC
old_value = __atomic_fetch_add(&value, increment_, __ATOMIC_ACQ_REL);
#elif defined ZMQ_ATOMIC_COUNTER_ATOMIC_H
integer_t new_value = atomic_add_32_nv (&value, increment_);
old_value = new_value - increment_;
#elif defined ZMQ_ATOMIC_COUNTER_TILE
old_value = arch_atomic_add (&value, increment_);
old_value = arch_atomic_add (&value, increment_);
#elif defined ZMQ_ATOMIC_COUNTER_X86
__asm__ volatile (
"lock; xadd %0, %1 \n\t"
@@ -125,6 +129,9 @@ namespace zmq
LONG delta = - ((LONG) decrement);
integer_t old = InterlockedExchangeAdd ((LONG*) &value, delta);
return old - decrement != 0;
#elif defined ZMQ_ATOMIC_INTRINSIC
integer_t nv = __atomic_sub_fetch(&value, decrement, __ATOMIC_ACQ_REL);
return nv != 0;
#elif defined ZMQ_ATOMIC_COUNTER_ATOMIC_H
int32_t delta = - ((int32_t) decrement);
integer_t nv = atomic_add_32_nv (&value, delta);