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Reset errno after EINTR

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This commit is contained in:
Lorenz Stechauner
2022-12-29 10:14:14 +01:00
parent b90ed61e03
commit cf3cff0746
3 changed files with 18 additions and 0 deletions
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6
src/lib/mpmc.c
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@ -54,6 +54,7 @@ int mpmc_queue(mpmc_t *ctx, void *obj) {
try_again_1:
if (sem_wait(&ctx->free) != 0) {
if (errno == EINTR) {
errno = 0;
goto try_again_1;
} else {
return -1;
@ -64,6 +65,7 @@ int mpmc_queue(mpmc_t *ctx, void *obj) {
try_again_2:
if (sem_wait(&ctx->lck_rd) != 0) {
if (errno == EINTR) {
errno = 0;
goto try_again_2;
} else {
sem_post(&ctx->free);
@ -92,9 +94,11 @@ static void *mpmc_worker(void *arg) {
// wait for buffer to be filled
if (sem_wait(&ctx->used) != 0) {
if (errno == EINTR) {
errno = 0;
continue;
} else {
critical("Unable to lock semaphore");
errno = 0;
break;
}
}
@ -102,10 +106,12 @@ static void *mpmc_worker(void *arg) {
// lock wr field
if (sem_wait(&ctx->lck_wr) != 0) {
if (errno == EINTR) {
errno = 0;
sem_post(&ctx->used);
continue;
} else {
critical("Unable to lock semaphore");
errno = 0;
sem_post(&ctx->used);
break;
}