Apply even more fixups

- Finish cleaning up the stdio unlocked APIs
- Make __cxa_finalize() properly thread safe
- Don't log locks if threads aren't being used
- Add some more mutex guards to places using _mmi
- Specific lock names now appear in the --ftrace logs
- Fix mkdeps.com generating invalid Makefiles sometimes
- Simplify and fix bugs in the test runner infrastructure
- Fix issue where sometimes some functions wouldn't be logged
This commit is contained in:
Justine Tunney 2022-06-12 11:47:20 -07:00
parent 4ddfc47d6e
commit 8cdec62f5b
87 changed files with 955 additions and 899 deletions

View file

@ -20,6 +20,7 @@
#include "libc/bits/atomic.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/pthread.h"
#include "libc/nexgen32e/threaded.h"
#include "libc/sysv/consts/futex.h"
@ -27,19 +28,17 @@
/**
* Releases mutex.
*/
noasan noubsan int pthread_mutex_unlock(pthread_mutex_t *mutex) {
int pthread_mutex_unlock(pthread_mutex_t *mutex) {
int owner;
bool shouldunlock;
assert(mutex->reent > 0);
shouldunlock = --mutex->reent <= 0;
if (__threaded) {
assert(mutex->owner == gettid());
if (shouldunlock) {
atomic_store_explicit(&mutex->owner, 0, memory_order_relaxed);
if (IsLinux() &&
atomic_load_explicit(&mutex->waits, memory_order_acquire)) {
futex((void *)&mutex->owner, FUTEX_WAKE, 1, 0, 0);
}
assert(mutex->owner == gettid());
if (shouldunlock) {
atomic_store_explicit(&mutex->owner, 0, memory_order_relaxed);
if (IsLinux() &&
atomic_load_explicit(&mutex->waits, memory_order_acquire)) {
futex((void *)&mutex->owner, FUTEX_WAKE, 1, 0, 0);
}
}
return 0;