int __timedwait(volatile int *addr, int val,
clockid_t clk, const struct timespec *at,
void (*cleanup)(void *), void *arg, int priv)
{
int r, cs;
struct timespec to, *top=0;
if (priv) priv = 128;
if (at) {
if (at->tv_nsec >= 1000000000UL) return EINVAL;
if (__clock_gettime(clk, &to)) return EINVAL;
to.tv_sec = at->tv_sec - to.tv_sec;
if ((to.tv_nsec = at->tv_nsec - to.tv_nsec) < 0) {
to.tv_sec--;
to.tv_nsec += 1000000000;
}
if (to.tv_sec < 0) return ETIMEDOUT;
top = &to;
}
if (!cleanup) __pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
pthread_cleanup_push(cleanup, arg);
r = -__syscall_cp(SYS_futex, addr, FUTEX_WAIT|priv, val, top);
if (r == ENOSYS) r = -__syscall_cp(SYS_futex, addr, FUTEX_WAIT, val, top);
if (r != EINTR && r != ETIMEDOUT) r = 0;
pthread_cleanup_pop(0);
if (!cleanup) __pthread_setcancelstate(cs, 0);
return r;
}
static int do_wait(volatile int *addr, int val,
clockid_t clk, const struct timespec *at, int priv)
{
int r;
struct timespec to, *top=0;
if (at) {
if (at->tv_nsec >= 1000000000UL) return EINVAL;
if (clock_gettime(clk, &to)) return EINVAL;
to.tv_sec = at->tv_sec - to.tv_sec;
if ((to.tv_nsec = at->tv_nsec - to.tv_nsec) < 0) {
to.tv_sec--;
to.tv_nsec += 1000000000;
}
if (to.tv_sec < 0) return ETIMEDOUT;
top = &to;
}
#ifdef __EMSCRIPTEN__
if (1 || pthread_self()->cancelasync == PTHREAD_CANCEL_ASYNCHRONOUS) {
do {
if (_pthread_isduecanceled(pthread_self())) {
// Emscripten-specific return value: The wait was canceled by user calling
// pthread_cancel() for this thread, and the caller needs to cooperatively
// cancel execution.
return ECANCELED;
}
// Must wait in slices in case this thread is cancelled in between.
double waitMsecs = at ? _pthread_msecs_until(at) : INFINITY;
if (waitMsecs <= 0) {
r = ETIMEDOUT;
break;
}
if (waitMsecs > 100) waitMsecs = 100;
r = -emscripten_futex_wait((void*)addr, val, waitMsecs);
// Assist other threads by executing proxied operations that are effectively singlethreaded.
if (emscripten_is_main_runtime_thread()) emscripten_main_thread_process_queued_calls();
} while(r == ETIMEDOUT);
} else {
// Can wait in one go.
double waitMsecs = at ? _pthread_msecs_until(at) : INFINITY;
r = -emscripten_futex_wait((void*)addr, val, waitMsecs);
}
#else
r = -__syscall_cp(SYS_futex, addr, FUTEX_WAIT, val, top);
#endif
if (r == EINTR || r == EINVAL || r == ETIMEDOUT) return r;
return 0;
}
static int do_wait(volatile int *addr, int val,
clockid_t clk, const struct timespec *at, int priv)
{
int r;
struct timespec to, *top=0;
if (at) {
if (at->tv_nsec >= 1000000000UL) return EINVAL;
if (clock_gettime(clk, &to)) return EINVAL;
to.tv_sec = at->tv_sec - to.tv_sec;
if ((to.tv_nsec = at->tv_nsec - to.tv_nsec) < 0) {
to.tv_sec--;
to.tv_nsec += 1000000000;
}
if (to.tv_sec < 0) return ETIMEDOUT;
top = &to;
}
r = -__syscall_cp(SYS_futex, addr, FUTEX_WAIT, val, top);
if (r == EINTR || r == EINVAL || r == ETIMEDOUT) return r;
return 0;
}
int clock_nanosleep(clockid_t clk, int flags, const struct timespec *req, struct timespec *rem)
{
return -__syscall_cp(SYS_clock_nanosleep, clk, flags, req, mcfi_sandbox_mask(rem));
}
