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Improve cancellations, randomness, and time

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- Exhaustively document cancellation points
- Rename SIGCANCEL to SIGTHR just like BSDs
- Further improve POSIX thread cancellations
- Ensure asynchronous cancellations work correctly
- Elevate the quality of getrandom() and getentropy()
- Make futexes cancel correctly on OpenBSD 6.x and 7.x
- Add reboot.com and shutdown.com to examples directory
- Remove underscore prefix from awesome timespec_*() APIs
- Create assertions that help verify our cancellation points
- Remove bad timespec APIs (cmp generalizes eq/ne/gt/gte/lt/lte)
This commit is contained in:
Justine Tunney 2022-11-05 19:49:41 -07:00
parent 0d7c265392
commit 3f0bcdc3ef
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GPG key ID: BE714B4575D6E328
173 changed files with 1599 additions and 782 deletions
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6
libc/calls/clock_gettime-mono.c
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@ -17,11 +17,11 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/struct/timespec.h"
#include "libc/thread/thread.h"
#include "libc/nexgen32e/rdtsc.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/errfuns.h"
#include "libc/thread/thread.h"
static struct {
pthread_once_t once;
@ -30,7 +30,7 @@ static struct {
} g_mono;
static void sys_clock_gettime_mono_init(void) {
g_mono.base_wall = _timespec_real();
g_mono.base_wall = timespec_real();
g_mono.base_tick = rdtsc();
}
@ -42,7 +42,7 @@ int sys_clock_gettime_mono(struct timespec *time) {
pthread_once(&g_mono.once, sys_clock_gettime_mono_init);
cycles = rdtsc() - g_mono.base_tick;
nanos = cycles / 3;
*time = _timespec_add(g_mono.base_wall, _timespec_fromnanos(nanos));
*time = timespec_add(g_mono.base_wall, timespec_fromnanos(nanos));
return 0;
} else {
return einval();