diff options
Diffstat (limited to 'src/atomic_counter.hpp')
| -rw-r--r-- | src/atomic_counter.hpp | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/src/atomic_counter.hpp b/src/atomic_counter.hpp index 32395d9..156eebf 100644 --- a/src/atomic_counter.hpp +++ b/src/atomic_counter.hpp @@ -69,17 +69,7 @@ namespace xs { integer_t old_value; -#if defined(XS_ATOMIC_GCC_SYNC) - old_value = __sync_fetch_and_add (&value, increment_); - -#elif (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) - __asm__ volatile ( - "lock; xadd %0, %1 \n\t" - : "=r" (old_value), "=m" (value) - : "0" (increment_), "m" (value) - : "cc", "memory"); - -#elif (defined(__GNUC__) && defined(__ARM_ARCH_7A__)) +#if (defined(__GNUC__) && defined(__ARM_ARCH_7A__)) integer_t flag, tmp; __asm__ volatile ( " dmb sy\n\t" @@ -93,6 +83,16 @@ namespace xs : "Ir"(increment_), "r"(&value) : "cc"); +#elif defined(XS_ATOMIC_GCC_SYNC) + old_value = __sync_fetch_and_add (&value, increment_); + +#elif (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) + __asm__ volatile ( + "lock; xadd %0, %1 \n\t" + : "=r" (old_value), "=m" (value) + : "0" (increment_), "m" (value) + : "cc", "memory"); + #elif defined(XS_ATOMIC_SOLARIS) integer_t new_value = atomic_add_32_nv (&value, increment_); old_value = new_value - increment_; @@ -112,20 +112,7 @@ namespace xs // Atomic subtraction. Returns false if the counter drops to zero. inline bool sub (integer_t decrement) { -#if defined(XS_ATOMIC_GCC_SYNC) - integer_t new_value = __sync_sub_and_fetch (&value, decrement); - return (new_value != 0); - -#elif (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) - integer_t oldval = -decrement; - volatile integer_t *val = &value; - __asm__ volatile ("lock; xaddl %0,%1" - : "=r" (oldval), "=m" (*val) - : "0" (oldval), "m" (*val) - : "cc", "memory"); - return oldval != decrement; - -#elif (defined(__GNUC__) && defined(__ARM_ARCH_7A__)) +#if (defined(__GNUC__) && defined(__ARM_ARCH_7A__)) integer_t old_value, flag, tmp; __asm__ volatile ( " dmb sy\n\t" @@ -140,6 +127,19 @@ namespace xs : "cc"); return old_value - decrement != 0; +#elif defined(XS_ATOMIC_GCC_SYNC) + integer_t new_value = __sync_sub_and_fetch (&value, decrement); + return (new_value != 0); + +#elif (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))) + integer_t oldval = -decrement; + volatile integer_t *val = &value; + __asm__ volatile ("lock; xaddl %0,%1" + : "=r" (oldval), "=m" (*val) + : "0" (oldval), "m" (*val) + : "cc", "memory"); + return oldval != decrement; + #elif defined(XS_ATOMIC_SOLARIS) int32_t delta = - ((int32_t) decrement); integer_t nv = atomic_add_32_nv (&value, delta); |