diff options
| author | Thomas Rodgers <rodgert@twrodgers.com> | 2021-04-21 08:15:16 -0700 |
|---|---|---|
| committer | Thomas Rodgers <rodgert@twrodgers.com> | 2021-04-21 08:18:28 -0700 |
| commit | 5445da1a94bb4df752209e54f4aa21702609a20a (patch) | |
| tree | 344da81f015612a5f7d560b4b871616742914459 /libstdc++-v3 | |
| parent | 7f9b7ccf0c14ee0dafb71860a94df65d08f59f2a (diff) | |
| download | gcc-5445da1a94bb4df752209e54f4aa21702609a20a.zip gcc-5445da1a94bb4df752209e54f4aa21702609a20a.tar.gz gcc-5445da1a94bb4df752209e54f4aa21702609a20a.tar.bz2 | |
[libstdc++] Add missing _M_try_acquire() to __platform_semaphore
libstdc++-v3/ChangeLog:
* include/bits/semaphore_base.h: Add missing _M_try_acquire()
member to __platform_wait.
Diffstat (limited to 'libstdc++-v3')
| -rw-r--r-- | libstdc++-v3/include/bits/semaphore_base.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libstdc++-v3/include/bits/semaphore_base.h b/libstdc++-v3/include/bits/semaphore_base.h index 7e3235d..35469e4 100644 --- a/libstdc++-v3/include/bits/semaphore_base.h +++ b/libstdc++-v3/include/bits/semaphore_base.h @@ -86,6 +86,24 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } } + _GLIBCXX_ALWAYS_INLINE bool + _M_try_acquire() noexcept + { + for (;;) + { + auto __err = sem_trywait(&_M_semaphore); + if (__err && (errno == EINTR)) + continue; + else if (__err && (errno == EAGAIN)) + return false; + else if (__err) + std::terminate(); + else + break; + } + return true; + } + _GLIBCXX_ALWAYS_INLINE void _M_release(std::ptrdiff_t __update) noexcept { |