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Implement POSIX threads API

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Justine Tunney 2022-09-05 08:26:03 -07:00
parent af24f21556
commit 9be364d40a
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GPG key ID: BE714B4575D6E328
95 changed files with 6029 additions and 317 deletions
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14
libc/intrin/wait0.c
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@ -16,11 +16,12 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/intrin/atomic.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/futex.internal.h"
#include "libc/intrin/pthread.h"
#include "libc/intrin/wait0.internal.h"
#include "libc/linux/futex.h"
@ -34,16 +35,17 @@
void _wait0(const int *ctid) {
int x;
for (;;) {
if (!(x = atomic_load_explicit(ctid, memory_order_acquire))) {
if (!(x = atomic_load_explicit(ctid, memory_order_relaxed))) {
break;
} else if (IsLinux() || IsOpenbsd()) {
_futex_wait(ctid, x, &(struct timespec){2});
_futex_wait_public(ctid, x, &(struct timespec){2});
} else {
sched_yield();
pthread_yield();
}
}
if (IsOpenbsd()) {
// TODO(jart): whyyyy do we need it
sched_yield();
// TODO(jart): Why do we need it? It's not even perfect.
// What's up with all these OpenBSD flakes??
pthread_yield();
}
}