mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-06 11:18:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make fixes and improvements

Browse source 
- Introduce __assert_disable global
- Improve strsignal() thread safety
- Make system call tracing thread safe
- Fix SO_RCVTIMEO / SO_SNDTIMEO on Windows
- Refactor DescribeFoo() functions into one place
- Fix fork() on Windows when TLS and MAP_STACK exist
- Round upwards in setsockopt(SO_RCVTIMEO) on Windows
- Disable futexes on OpenBSD which seem extremely broken
- Implement a better kludge for monotonic time on Windows
This commit is contained in:
Justine Tunney 2022-06-25 18:17:31 -07:00
parent 5d837c4e7c
commit fbc053e018
186 changed files with 1836 additions and 1325 deletions
Download patch file Download diff file Expand all files Collapse all files

42
libc/calls/clock_gettime-nt.c
View file

@ -16,15 +16,27 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/likely.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/timespec.h"
#include "libc/fmt/conv.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/spinlock.h"
#include "libc/nexgen32e/rdtsc.h"
#include "libc/nexgen32e/threaded.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/nt/struct/filetime.h"
#include "libc/nt/synchronization.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/errfuns.h"
#include "libc/time/clockstonanos.internal.h"
textwindows int sys_clock_gettime_nt(int clockid, struct timespec *ts) {
int64_t ms;
uint64_t nanos;
static bool once;
static char lock;
struct timespec res;
static uint64_t base;
struct NtFileTime ft;
static struct timespec mono;
if (!ts) return efault();
@ -32,21 +44,21 @@ textwindows int sys_clock_gettime_nt(int clockid, struct timespec *ts) {
GetSystemTimeAsFileTime(&ft);
*ts = FileTimeToTimeSpec(ft);
return 0;
} else if (clockid == CLOCK_MONOTONIC || clockid == CLOCK_MONOTONIC_RAW) {
ms = GetTickCount64();
res.tv_sec = ms / 1000;
res.tv_nsec = ms % 1000 * 1000000;
res.tv_nsec += rdtsc() / 3 % 1000000000;
if (res.tv_nsec > 1000000000) {
res.tv_nsec -= 1000000000;
res.tv_sec += 1;
}
if (res.tv_sec > mono.tv_sec ||
(res.tv_sec == mono.tv_sec && res.tv_nsec > mono.tv_nsec)) {
mono = res;
} else {
res = mono;
} else if ((clockid == CLOCK_MONOTONIC || clockid == CLOCK_MONOTONIC_RAW) &&
X86_HAVE(INVTSC)) {
// this routine stops being monotonic after 194 years of uptime
if (__threaded) _spinlock(&lock);
if (UNLIKELY(!once)) {
GetSystemTimeAsFileTime(&ft);
mono = FileTimeToTimeSpec(ft);
base = rdtsc();
once = true;
}
nanos = ClocksToNanos(rdtsc(), base);
res = mono;
res.tv_sec += nanos / 1000000000;
res.tv_nsec += nanos % 1000000000;
_spunlock(&lock);
*ts = res;
return 0;
} else {