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Merge "Fix, generalize stdatomic.h; improve test."

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Hans Boehm
2014-08-22 22:52:31 +00:00
committed by Gerrit Code Review
parent 9d34f6a909 00aaea3645
commit a4a8c4feb8
3 changed files with 94 additions and 11 deletions
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14
libc/include/stdatomic.h
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@@ -123,6 +123,12 @@ using std::atomic_uintmax_t;
* bits as a T.
*/
#include <stddef.h> /* For ptrdiff_t. */
#include <stdint.h> /* TODO: Should pollute namespace less. */
#if __STDC_VERSION__ >= 201112L
# include <uchar.h> /* For char16_t and char32_t. */
#endif
#if __has_extension(c_atomic) || __has_extension(cxx_atomic)
#define __CLANG_ATOMICS
#elif __GNUC_PREREQ__(4, 7)
@@ -228,7 +234,7 @@ typedef enum {
*/
static __inline void
atomic_thread_fence(memory_order __order __unused)
atomic_thread_fence(memory_order __order __attribute__((unused)))
{
#ifdef __CLANG_ATOMICS
@@ -241,7 +247,7 @@ atomic_thread_fence(memory_order __order __unused)
}
static __inline void
atomic_signal_fence(memory_order __order __unused)
atomic_signal_fence(memory_order __order __attribute__((unused)))
{
#ifdef __CLANG_ATOMICS
@@ -263,7 +269,7 @@ atomic_signal_fence(memory_order __order __unused)
((void)(obj), (_Bool)1)
#elif defined(__CLANG_ATOMICS)
#define atomic_is_lock_free(obj) \
__atomic_is_lock_free(sizeof(*(obj)), obj)
__c11_atomic_is_lock_free(sizeof(*(obj)))
#elif defined(__GNUC_ATOMICS)
#define atomic_is_lock_free(obj) \
__atomic_is_lock_free(sizeof((obj)->__val), &(obj)->__val)
@@ -477,7 +483,7 @@ typedef struct {
atomic_bool __flag;
} atomic_flag;
#define ATOMIC_FLAG_INIT { ATOMIC_VAR_INIT(0) }
#define ATOMIC_FLAG_INIT { ATOMIC_VAR_INIT(false) }
static __inline bool
atomic_flag_test_and_set_explicit(volatile atomic_flag *__object,