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Make flag type configurable by the compiler

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115614 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant 2010-10-05 14:02:23 +00:00
parent b4ac745466
commit 6cac2c2c9c
1 changed files with 23 additions and 12 deletions
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35
include/atomic
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@ -12376,6 +12376,10 @@ __choose_compare_exchange_weak_relaxed_relaxed(void* volatile* __obj,
// flag type and operations // flag type and operations
#if !__has_feature(__atomic_flag)
typedef bool __atomic_flag__;
#endif
struct atomic_flag; struct atomic_flag;
bool atomic_flag_test_and_set(volatile atomic_flag*); bool atomic_flag_test_and_set(volatile atomic_flag*);
@ -12389,7 +12393,7 @@ void atomic_flag_clear_explicit(atomic_flag*, memory_order);
typedef struct _LIBCPP_VISIBLE atomic_flag typedef struct _LIBCPP_VISIBLE atomic_flag
{ {
bool __flg_; __atomic_flag__ __flg_;
_LIBCPP_INLINE_VISIBILITY _LIBCPP_INLINE_VISIBILITY
bool test_and_set() volatile bool test_and_set() volatile
@ -12441,7 +12445,8 @@ inline _LIBCPP_INLINE_VISIBILITY
bool bool
atomic_flag_test_and_set(volatile atomic_flag* __f) atomic_flag_test_and_set(volatile atomic_flag* __f)
{ {
return __choose_exchange_seq_cst(&__f->__flg_, true); return __choose_exchange_seq_cst(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
} }
inline _LIBCPP_INLINE_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY
@ -12458,17 +12463,23 @@ atomic_flag_test_and_set_explicit(volatile atomic_flag* __f, memory_order __o)
switch (__o) switch (__o)
{ {
case memory_order_relaxed: case memory_order_relaxed:
return __choose_exchange_relaxed(&__f->__flg_, true); return __choose_exchange_relaxed(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
case memory_order_consume: case memory_order_consume:
return __choose_exchange_consume(&__f->__flg_, true); return __choose_exchange_consume(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
case memory_order_acquire: case memory_order_acquire:
return __choose_exchange_acquire(&__f->__flg_, true); return __choose_exchange_acquire(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
case memory_order_release: case memory_order_release:
return __choose_exchange_release(&__f->__flg_, true); return __choose_exchange_release(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
case memory_order_acq_rel: case memory_order_acq_rel:
return __choose_exchange_acq_rel(&__f->__flg_, true); return __choose_exchange_acq_rel(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
case memory_order_seq_cst: case memory_order_seq_cst:
return __choose_exchange_seq_cst(&__f->__flg_, true); return __choose_exchange_seq_cst(&__f->__flg_, __atomic_flag__(true))
== __atomic_flag__(true);
} }
} }
@ -12484,7 +12495,7 @@ inline _LIBCPP_INLINE_VISIBILITY
void void
atomic_flag_clear(volatile atomic_flag* __f) atomic_flag_clear(volatile atomic_flag* __f)
{ {
return __choose_store_seq_cst(&__f->__flg_, false); __choose_store_seq_cst(&__f->__flg_, __atomic_flag__(false));
} }
inline _LIBCPP_INLINE_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY
@ -12501,13 +12512,13 @@ atomic_flag_clear_explicit(volatile atomic_flag* __f, memory_order __o)
switch (__o) switch (__o)
{ {
case memory_order_relaxed: case memory_order_relaxed:
__choose_store_relaxed(&__f->__flg_, false); __choose_store_relaxed(&__f->__flg_, __atomic_flag__(false));
break; break;
case memory_order_release: case memory_order_release:
__choose_store_release(&__f->__flg_, false); __choose_store_release(&__f->__flg_, __atomic_flag__(false));
break; break;
case memory_order_seq_cst: case memory_order_seq_cst:
__choose_store_seq_cst(&__f->__flg_, false); __choose_store_seq_cst(&__f->__flg_, __atomic_flag__(false));
break; break;
} }
} }