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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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35
libc/intrin/asan.c
View file

@ -25,6 +25,7 @@
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/asancodes.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/leaky.internal.h"
#include "libc/intrin/likely.h"
#include "libc/intrin/lockcmpxchg.h"
#include "libc/intrin/nomultics.internal.h"
@ -170,7 +171,7 @@ struct ReportOriginHeap {
};
static int __asan_noreentry;
static pthread_mutex_t __asan_lock;
static pthread_spinlock_t __asan_lock;
static struct AsanMorgue __asan_morgue;
#define __asan_unreachable() \
@ -867,25 +868,25 @@ dontdiscard __asan_die_f *__asan_report_memory_fault(void *addr, int size,
void *__asan_morgue_add(void *p) {
int i;
void *r;
if (__threaded) pthread_mutex_lock(&__asan_lock);
if (__threaded) pthread_spin_lock(&__asan_lock);
i = __asan_morgue.i++ & (ARRAYLEN(__asan_morgue.p) - 1);
r = __asan_morgue.p[i];
__asan_morgue.p[i] = p;
if (__threaded) pthread_mutex_unlock(&__asan_lock);
if (__threaded) pthread_spin_unlock(&__asan_lock);
return r;
}
static void __asan_morgue_flush(void) {
int i;
void *p;
if (__threaded) pthread_mutex_lock(&__asan_lock);
if (__threaded) pthread_spin_lock(&__asan_lock);
for (i = 0; i < ARRAYLEN(__asan_morgue.p); ++i) {
if (__asan_morgue.p[i] && weaken(dlfree)) {
weaken(dlfree)(__asan_morgue.p[i]);
}
__asan_morgue.p[i] = 0;
}
if (__threaded) pthread_mutex_unlock(&__asan_lock);
if (__threaded) pthread_spin_unlock(&__asan_lock);
}
static size_t __asan_user_size(size_t n) {
@ -1052,6 +1053,30 @@ int __asan_print_trace(void *p) {
return 0;
}
// Returns true if `p` was allocated by an IGNORE_LEAKS(function).
int __asan_is_leaky(void *p) {
int sym;
size_t c, i, n;
intptr_t f, *l;
struct AsanExtra *e;
struct SymbolTable *st;
if (!weaken(GetSymbolTable)) notpossible;
if (!(e = __asan_get_extra(p, &c))) return 0;
if (!__asan_read48(e->size, &n)) return 0;
if (!__asan_is_mapped((((intptr_t)p >> 3) + 0x7fff8000) >> 16)) return 0;
if (!(st = GetSymbolTable())) return 0;
for (i = 0; i < ARRAYLEN(e->bt.p) && e->bt.p[i]; ++i) {
if ((sym = weaken(__get_symbol)(st, e->bt.p[i])) == -1) continue;
f = st->addr_base + st->symbols[sym].x;
for (l = _leaky_start; l < _leaky_end; ++l) {
if (f == *l) {
return 1;
}
}
}
return 0;
}
static void __asan_deallocate(char *p, long kind) {
size_t c, n;
struct AsanExtra *e;