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null check semaphore otherwise sem_* crashes

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This commit is contained in:
Nikita Smith
2026-06-02 12:10:11 -07:00
committed by Ryan Fleury
parent 7c6ad4c563
commit 3da0b89ac6
1 changed files with 15 additions and 18 deletions
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src/linux/base/linux_base.c
+15 -18
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@@ -662,36 +662,33 @@ semaphore_open(String8 name)
internal void internal void
semaphore_close(Semaphore semaphore) semaphore_close(Semaphore semaphore)
{ {
sem_t *s = (sem_t *)semaphore.u64[0]; if(semaphore.u64[0] != 0)
sem_close(s); {
sem_t *s = (sem_t *)semaphore.u64[0];
sem_close(s);
}
} }
internal B32 internal B32
semaphore_take(Semaphore semaphore, U64 endt_us) semaphore_take(Semaphore semaphore, U64 endt_us)
{ {
struct timespec t = { .tv_sec = endt_us / 1000000, .tv_nsec = (endt_us % 1000000) * 1000 }; int err = -1;
int err = OS_LNX_RETRY_ON_EINTR(sem_clockwait((sem_t*)semaphore.u64[0], CLOCK_MONOTONIC, &t)); if(semaphore.u64[0] != 0)
{
struct timespec t = { .tv_sec = endt_us / 1000000, .tv_nsec = (endt_us % 1000000) * 1000 };
err = OS_LNX_RETRY_ON_EINTR(sem_clockwait((sem_t*)semaphore.u64[0], CLOCK_MONOTONIC, &t));
}
return err == 0; return err == 0;
} }
internal void internal void
semaphore_drop(Semaphore semaphore) semaphore_drop(Semaphore semaphore)
{ {
for(;;) int err = -1;
if(semaphore.u64[0] != 0)
{ {
int err = sem_post((sem_t*)semaphore.u64[0]); err = OS_LNX_RETRY_ON_EINTR(sem_post((sem_t*)semaphore.u64[0]));
if(err == 0) Assert(err == 0);
{
break;
}
else
{
if(errno == EAGAIN)
{
continue;
}
}
break;
} }
} }