Mirrorlandia_minetest/minetest
1
0
Fork 1
mirror of https://github.com/minetest/minetest.git synced 2024-12-23 14:42:24 +01:00
Code Issues Packages Projects Releases Wiki Activity

Optimize semaphore wait with zero timeout on POSIX

Browse Source
This commit is contained in:
sfan5 2019-11-14 17:58:07 +01:00
parent b5f5e00b29
commit 49365b25d9
1 changed files with 17 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/threading/semaphore.cpp
View File

@ -140,6 +140,8 @@ bool Semaphore::wait(unsigned int time_ms)
errno = EINVAL;
}
# else
int ret;
if (time_ms > 0) {
struct timespec wait_time;
struct timeval now;
@ -152,10 +154,13 @@ bool Semaphore::wait(unsigned int time_ms)
wait_time.tv_sec = (time_ms / 1000) + (wait_time.tv_nsec / (1000 * 1000 * 1000)) + now.tv_sec;
wait_time.tv_nsec %= 1000 * 1000 * 1000;
int ret = sem_timedwait(&semaphore, &wait_time);
ret = sem_timedwait(&semaphore, &wait_time);
} else {
ret = sem_trywait(&semaphore);
}
# endif
assert(!ret || (errno == ETIMEDOUT || errno == EINTR));
assert(!ret || (errno == ETIMEDOUT || errno == EINTR || errno == EAGAIN));
return !ret;
#endif
}