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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/thread/pthread_create.c
View file

@ -19,14 +19,16 @@
#include "libc/assert.h"
#include "libc/calls/calls.h"
#include "libc/calls/sched-sysv.internal.h"
#include "libc/calls/struct/sigaltstack.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/bits.h"
#include "libc/intrin/wait0.internal.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/weaken.h"
#include "libc/log/internal.h"
#include "libc/macros.internal.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/gc.internal.h"
@ -35,11 +37,16 @@
#include "libc/sysv/consts/clone.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/prot.h"
#include "libc/sysv/consts/ss.h"
#include "libc/sysv/errfuns.h"
#include "libc/thread/posixthread.internal.h"
#include "libc/thread/spawn.h"
#include "libc/thread/thread.h"
#include "libc/thread/tls.h"
#include "libc/thread/wait0.internal.h"
STATIC_YOINK("nsync_mu_lock");
STATIC_YOINK("nsync_mu_unlock");
#define MAP_ANON_OPENBSD 0x1000
#define MAP_STACK_OPENBSD 0x4000
@ -53,7 +60,12 @@ void _pthread_free(struct PosixThread *pt) {
if (pt->ownstack && //
pt->attr.stackaddr && //
pt->attr.stackaddr != MAP_FAILED) {
munmap(&pt->attr.stackaddr, pt->attr.stacksize);
if (munmap(pt->attr.stackaddr, pt->attr.stacksize)) {
notpossible;
}
}
if (pt->altstack) {
free(pt->altstack);
}
free(pt);
}
@ -61,6 +73,15 @@ void _pthread_free(struct PosixThread *pt) {
static int PosixThread(void *arg, int tid) {
struct PosixThread *pt = arg;
enum PosixThreadStatus status;
struct sigaltstack ss;
if (pt->altstack) {
ss.ss_flags = 0;
ss.ss_size = SIGSTKSZ;
ss.ss_sp = pt->altstack;
if (sigaltstack(&ss, 0)) {
notpossible;
}
}
if (pt->attr.inheritsched == PTHREAD_EXPLICIT_SCHED) {
_pthread_reschedule(pt);
}
@ -254,6 +275,11 @@ int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
}
}
// setup signal handler stack
if (_wantcrashreports && !IsWindows()) {
pt->altstack = malloc(SIGSTKSZ);
}
// set initial status
switch (pt->attr.detachstate) {
case PTHREAD_CREATE_JOINABLE: