diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-atomic.hh')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-atomic.hh | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/thirdparty/harfbuzz/src/hb-atomic.hh b/thirdparty/harfbuzz/src/hb-atomic.hh index e640d1b586..d6dfb0f57a 100644 --- a/thirdparty/harfbuzz/src/hb-atomic.hh +++ b/thirdparty/harfbuzz/src/hb-atomic.hh @@ -111,6 +111,19 @@ _hb_atomic_ptr_impl_cmplexch (const void **P, const void *O_, const void *N) #endif +#ifndef _hb_compiler_memory_r_barrier +/* This we always use std::atomic for; and should never be disabled... + * except that MSVC gives me an internal compiler error on it. */ +#if !defined(_MSC_VER) +#include <atomic> +#define _hb_compiler_memory_r_barrier() std::atomic_signal_fence (std::memory_order_acquire) +#else +#define _hb_compiler_memory_r_barrier() do {} while (0) +#endif +#endif + + + #ifndef _hb_memory_r_barrier #define _hb_memory_r_barrier() _hb_memory_barrier () #endif |