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Use *NSYNC for POSIX threads locking APIs

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Condition variables, barriers, and r/w locks now work very well.
This commit is contained in:
Justine Tunney 2022-09-11 11:02:07 -07:00
parent 3de35e196c
commit b5cb71ab84
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GPG key ID: BE714B4575D6E328
197 changed files with 3734 additions and 3817 deletions
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30
libc/calls/_timespec_cmp.c Normal file
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@ -0,0 +1,30 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/struct/timespec.h"
/**
* Compares two nanosecond timestamps.
*/
int _timespec_cmp(struct timespec a, struct timespec b) {
int cmp;
if (!(cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec))) {
cmp = (a.tv_nsec > b.tv_nsec) - (a.tv_nsec < b.tv_nsec);
}
return cmp;
}

3
libc/calls/_timespec_real.c
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@ -16,7 +16,6 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/calls/struct/timespec.h"
#include "libc/sysv/consts/clock.h"
#include "libc/sysv/consts/nr.h"
@ -26,6 +25,6 @@ struct timespec _timespec_real(void) {
int ax, dx;
struct timespec ts;
ax = clock_gettime(CLOCK_REALTIME_FAST, &ts);
assert(!ax);
if (ax) notpossible;
return ts;
}

14
libc/calls/_timespec_sub.c
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@ -21,12 +21,12 @@
/**
* Subtracts two nanosecond timestamps.
*/
struct timespec _timespec_sub(struct timespec x, struct timespec y) {
x.tv_sec -= y.tv_sec;
x.tv_nsec -= y.tv_nsec;
if (x.tv_nsec < 0) {
x.tv_nsec += 1000000000;
x.tv_sec -= 1;
struct timespec _timespec_sub(struct timespec a, struct timespec b) {
a.tv_sec -= b.tv_sec;
if (a.tv_nsec < b.tv_nsec) {
a.tv_nsec += 1000000000;
a.tv_sec--;
}
return x;
a.tv_nsec -= b.tv_nsec;
return a;
}

2
libc/calls/siglock.c
View file

@ -30,5 +30,5 @@ void(__sig_unlock)(void) {
}
__attribute__((__constructor__)) static void init(void) {
__sig_lock_obj.type = PTHREAD_MUTEX_RECURSIVE;
__sig_lock_obj._type = PTHREAD_MUTEX_RECURSIVE;
}

1
libc/calls/struct/timespec.h
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@ -17,6 +17,7 @@ int utimensat(int, const char *, const struct timespec[2], int);
int timespec_get(struct timespec *, int);
int timespec_getres(struct timespec *, int);
int _timespec_cmp(struct timespec, struct timespec) pureconst;
bool _timespec_eq(struct timespec, struct timespec) pureconst;
bool _timespec_gte(struct timespec, struct timespec) pureconst;
int64_t _timespec_tomicros(struct timespec) pureconst;