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Introduce cosmo_futex_wait and cosmo_futex_wake

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Cosmopolitan Futexes are now exposed as a public API.
This commit is contained in:
Justine Tunney 2024-11-22 11:08:29 -08:00
parent 729f7045e3
commit 9ddbfd921e
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GPG key ID: BE714B4575D6E328
66 changed files with 886 additions and 917 deletions
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4
libc/thread/sem_post.c
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@ -19,6 +19,7 @@
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/cosmo.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/atomic.h"
@ -26,7 +27,6 @@
#include "libc/runtime/syslib.internal.h"
#include "libc/sysv/errfuns.h"
#include "libc/thread/semaphore.h"
#include "third_party/nsync/futex.internal.h"
/**
* Unlocks semaphore.
@ -46,7 +46,7 @@ int sem_post(sem_t *sem) {
old = atomic_fetch_add_explicit(&sem->sem_value, 1, memory_order_acq_rel);
unassert(old > INT_MIN);
if (old >= 0) {
wakeups = nsync_futex_wake_(&sem->sem_value, 1, sem->sem_pshared);
wakeups = cosmo_futex_wake(&sem->sem_value, 1, sem->sem_pshared);
npassert(wakeups >= 0);
rc = 0;
} else {