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| author | Ivan Maidanski <ivmai@mail.ru> | 2017-11-28 22:11:15 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2017-11-30 18:52:14 +0300 |
| commit | e8d559f5be67befec44c839809b2941295c03988 (patch) | |
| tree | 2221ffb6721df4cc0a56704e2bf65cd51835ebda | |
| parent | 2258660c6adc4ad6eb56e950cbeffedc50e9fbb0 (diff) | |
Define AO_TS_SET to true (1) if GCC atomic_test_and_set is used
(fix commit 3315a03)
According to GCC manual about the built-in functions for memory model
aware atomic operations, __atomic_test_and_set returns bool value;
bool true is encoded as 1.
* src/atomic_ops/sysdeps/test_and_set_t_is_char.h [AO_PREFER_GENERALIZED
|| !__GCC_ATOMIC_TEST_AND_SET_TRUEVAL] (AO_TS_SET_TRUEVAL): Define to 1
(instead of 0xff).
| -rw-r--r-- | src/atomic_ops/sysdeps/test_and_set_t_is_char.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/atomic_ops/sysdeps/test_and_set_t_is_char.h b/src/atomic_ops/sysdeps/test_and_set_t_is_char.h index 75df9c0..9eb250c 100644 --- a/src/atomic_ops/sysdeps/test_and_set_t_is_char.h +++ b/src/atomic_ops/sysdeps/test_and_set_t_is_char.h @@ -26,11 +26,13 @@ * all zeroes, and the "set" value contains all ones typically. */ -#if defined(AO_GCC_ATOMIC_TEST_AND_SET) && !defined(AO_PREFER_GENERALIZED) \ - && defined(__GCC_ATOMIC_TEST_AND_SET_TRUEVAL) +#ifndef AO_GCC_ATOMIC_TEST_AND_SET +# define AO_TS_SET_TRUEVAL 0xff +#elif defined(__GCC_ATOMIC_TEST_AND_SET_TRUEVAL) \ + && !defined(AO_PREFER_GENERALIZED) # define AO_TS_SET_TRUEVAL __GCC_ATOMIC_TEST_AND_SET_TRUEVAL #else -# define AO_TS_SET_TRUEVAL 0xff +# define AO_TS_SET_TRUEVAL 1 /* true */ #endif typedef enum { |