Use YieldProcessor which already has the best definition for all MSVC
and MinGW supported architectures of the memory pause / yield
instruction.
Signed-off-by: Antonin Décimo <anto...@tarides.com>
---
mingw-w64-libraries/winpthreads/src/misc.h | 8 --------
mingw-w64-libraries/winpthreads/src/spinlock.c | 8 +-------
2 files changed, 1 insertion(+), 15 deletions(-)
diff --git a/mingw-w64-libraries/winpthreads/src/misc.h
b/mingw-w64-libraries/winpthreads/src/misc.h
index 49d1ee1fb..ce278c976 100644
--- a/mingw-w64-libraries/winpthreads/src/misc.h
+++ b/mingw-w64-libraries/winpthreads/src/misc.h
@@ -101,18 +101,10 @@ static WINPTHREADS_INLINE unsigned long
dwMilliSecs(unsigned long long ms)
return (unsigned long) ms;
}
-#ifndef _mm_pause
-#define _mm_pause() do { __asm__ __volatile__("pause"); } while (0)
-#endif
-
#ifndef _ReadWriteBarrier
#define _ReadWriteBarrier __sync_synchronize
#endif
-#ifndef YieldProcessor
-#define YieldProcessor _mm_pause
-#endif
-
unsigned long long _pthread_time_in_ms(void);
unsigned long long _pthread_time_in_ms_from_timespec(const struct timespec
*ts);
unsigned long long _pthread_rel_time_in_ms(const struct timespec *ts);
diff --git a/mingw-w64-libraries/winpthreads/src/spinlock.c
b/mingw-w64-libraries/winpthreads/src/spinlock.c
index d0e47f0b5..384c98970 100644
--- a/mingw-w64-libraries/winpthreads/src/spinlock.c
+++ b/mingw-w64-libraries/winpthreads/src/spinlock.c
@@ -52,13 +52,7 @@ pthread_spin_lock (pthread_spinlock_t *lock)
volatile spinlock_word_t *lk = (volatile spinlock_word_t *)lock;
while (unlikely(__sync_lock_test_and_set(lk, 0) == 0))
do {
-#if defined(__i386__) || defined(__x86_64__)
- asm("pause" ::: "memory");
-#elif defined(__arm__) || defined(__aarch64__)
- asm("wfe" ::: "memory");
-#else
-#error Unsupported architecture
-#endif
+ YieldProcessor();
} while (*lk == 0);
return 0;
}
--
2.43.0
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