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Add *NSYNC unit test suite

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This change also fixes the clock_nanosleep() api and polyfills futexes
on Windows, Mac, and NetBSD using exponential backoff.
This commit is contained in:
Justine Tunney 2022-10-07 21:29:40 -07:00
parent 3421b9a580
commit 9849b4c7ba
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GPG key ID: BE714B4575D6E328
51 changed files with 5505 additions and 1060 deletions
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26
libc/calls/clock_nanosleep.c
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@ -17,11 +17,13 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/asan.internal.h"
#include "libc/calls/state.internal.h"
#include "libc/calls/struct/timespec.h"
#include "libc/calls/struct/timespec.internal.h"
#include "libc/calls/struct/timeval.h"
#include "libc/calls/struct/timeval.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/sysv/consts/clock.h"
@ -69,7 +71,7 @@
* (1) it's non-null; (2) `flags` is 0; and (3) -1 w/ `EINTR` is
* returned; if this function returns 0 then `rem` is undefined;
* if flags is `TIMER_ABSTIME` then `rem` is ignored
* @return 0 on success, or -1 w/ errno
* @return 0 on success, or errno on error
* @raise EINTR when a signal got delivered while we were waiting
* @raise ENOTSUP if `clock` is known but we can't use it here
* @raise EINVAL if `clock` is unknown to current platform
@ -77,11 +79,12 @@
* @raise EINVAL if `req->tv_nsec ∉ [0,1000000000)`
* @raise EFAULT if bad memory was passed
* @raise ENOSYS on bare metal
* @returnserrno
* @norestart
*/
int clock_nanosleep(int clock, int flags, const struct timespec *req,
struct timespec *rem) {
int rc;
errno_t clock_nanosleep(int clock, int flags, const struct timespec *req,
struct timespec *rem) {
int rc, e = errno;
if (!req || (IsAsan() && (!__asan_is_valid_timespec(req) ||
(rem && !__asan_is_valid_timespec(rem))))) {
@ -103,9 +106,18 @@ int clock_nanosleep(int clock, int flags, const struct timespec *req,
rc = sys_clock_nanosleep_nt(clock, flags, req, rem);
}
STRACE("clock_nanosleep(%s, %s, %s, [%s]) → %d% m", DescribeClockName(clock),
DescribeSleepFlags(flags), flags, DescribeTimespec(0, req),
DescribeTimespec(rc, rem), rc);
if (rc == -1) {
rc = errno;
errno = e;
}
#if SYSDEBUG
if (!__time_critical) {
STRACE("clock_nanosleep(%s, %s, %s, [%s]) → %s", DescribeClockName(clock),
DescribeSleepFlags(flags), DescribeTimespec(0, req),
DescribeTimespec(rc, rem), DescribeErrnoResult(rc));
}
#endif
return rc;
}