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- 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
Download patch file Download diff file Expand all files Collapse all files

8
libc/intrin/asan.c
View file

@ -858,25 +858,25 @@ dontdiscard __asan_die_f *__asan_report_memory_fault(void *addr, int size,
void *__asan_morgue_add(void *p) {
int i;
void *r;
pthread_mutex_lock(&__asan_lock);
if (__threaded) pthread_mutex_lock(&__asan_lock);
i = __asan_morgue.i++ & (ARRAYLEN(__asan_morgue.p) - 1);
r = __asan_morgue.p[i];
__asan_morgue.p[i] = p;
pthread_mutex_unlock(&__asan_lock);
if (__threaded) pthread_mutex_unlock(&__asan_lock);
return r;
}
static void __asan_morgue_flush(void) {
int i;
void *p;
pthread_mutex_lock(&__asan_lock);
if (__threaded) pthread_mutex_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;
}
pthread_mutex_unlock(&__asan_lock);
if (__threaded) pthread_mutex_unlock(&__asan_lock);
}
static size_t __asan_user_size(size_t n) {

11
libc/intrin/cxalock.c
View file

@ -16,6 +16,15 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/intrin/pthread.h"
#include "libc/runtime/cxaatexit.internal.h"
pthread_mutex_t __cxa_lock_obj;
static pthread_mutex_t __cxa_lock_obj;
void(__cxa_lock)(void) {
pthread_mutex_lock(&__cxa_lock_obj);
}
void(__cxa_unlock)(void) {
pthread_mutex_unlock(&__cxa_lock_obj);
}

10
libc/intrin/g_fds.c
View file

@ -27,7 +27,15 @@
STATIC_YOINK("_init_g_fds");
struct Fds g_fds;
pthread_mutex_t __fds_lock_obj;
static pthread_mutex_t __fds_lock_obj;
void(__fds_lock)(void) {
pthread_mutex_lock(&__fds_lock_obj);
}
void(__fds_unlock)(void) {
pthread_mutex_unlock(&__fds_lock_obj);
}
textstartup void InitializeFileDescriptors(void) {
struct Fds *fds;

1
libc/intrin/gettid.greg.c
View file

@ -18,6 +18,7 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/nexgen32e/gettls.h"
#include "libc/nexgen32e/threaded.h"
#include "libc/nt/thread.h"
#include "libc/nt/thunk/msabi.h"

15
libc/intrin/intrin.mk
View file

@ -72,6 +72,21 @@ o/$(MODE)/libc/intrin/kprintf.greg.o: \
-fno-sanitize=all \
-fno-stack-protector
# synchronization primitives are intended to be magic free
o/$(MODE)/libc/intrin/gettid.greg.o \
o/$(MODE)/libc/intrin/pthread_mutex_lock.o \
o/$(MODE)/libc/intrin/pthread_mutex_unlock.o \
o/$(MODE)/libc/intrin/pthread_mutex_trylock.o \
o/$(MODE)/libc/intrin/_trylock_debug_4.o \
o/$(MODE)/libc/intrin/_spinlock_debug_4.o: \
OVERRIDE_CFLAGS += \
-fwrapv \
-x-no-pg \
-mno-fentry \
-ffreestanding \
-fno-sanitize=all \
-fno-stack-protector
o/$(MODE)/libc/intrin/tls.greg.o \
o/$(MODE)/libc/intrin/exit.greg.o \
o/$(MODE)/libc/intrin/exit1.greg.o \

33
libc/intrin/mmi.c Normal file
View file

@ -0,0 +1,33 @@
/*-*- 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 2020 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/intrin/pthread.h"
#include "libc/runtime/memtrack.internal.h"
STATIC_YOINK("_init__mmi");
struct MemoryIntervals _mmi;
static pthread_mutex_t __mmi_lock_obj;
void(__mmi_lock)(void) {
pthread_mutex_lock(&__mmi_lock_obj);
}
void(__mmi_unlock)(void) {
pthread_mutex_unlock(&__mmi_lock_obj);
}

24
libc/intrin/mmi.init.S Normal file
View file

@ -0,0 +1,24 @@
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2021 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/macros.internal.h"
.init.start 200,_init__mmi
movb $OPEN_MAX,_mmi+8
movl $_mmi+24,_mmi+16
.init.end 200,_init__mmi

5
libc/intrin/pthread.h
View file

@ -1,6 +1,7 @@
#ifndef COSMOPOLITAN_LIBC_RUNTIME_PTHREAD_H_
#define COSMOPOLITAN_LIBC_RUNTIME_PTHREAD_H_
#include "libc/calls/struct/timespec.h"
#include "libc/intrin/kprintf.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -23,9 +24,9 @@ typedef unsigned long *pthread_t;
typedef int pthread_once_t;
typedef struct {
_Atomic(int) owner;
_Atomic(int) waits;
int reent;
int owner;
int waits;
} pthread_mutex_t;
typedef struct {

34
libc/intrin/pthread_mutex_lock.c
View file

@ -18,7 +18,8 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/atomic.h"
#include "libc/calls/calls.h"
#include "libc/intrin/lockcmpxchgp.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"
@ -26,25 +27,24 @@
/**
* Acquires mutex.
*/
noasan noubsan int pthread_mutex_lock(pthread_mutex_t *mutex) {
int pthread_mutex_lock(pthread_mutex_t *mutex) {
int me, owner;
unsigned tries;
if (__threaded) {
for (tries = 0, me = gettid();;) {
owner = 0;
if (_lockcmpxchgp(&mutex->owner, &owner, me) || owner == me) {
break;
}
atomic_fetch_add(&mutex->waits, +1);
if (!IsLinux() || futex((void *)&mutex->owner, FUTEX_WAIT, owner, 0, 0)) {
if (++tries & 7) {
__builtin_ia32_pause();
} else {
sched_yield();
}
}
atomic_fetch_add(&mutex->waits, -1);
for (tries = 0, me = gettid();;) {
owner = 0;
if (atomic_compare_exchange_weak(&mutex->owner, &owner, me) ||
owner == me) {
break;
}
atomic_fetch_add(&mutex->waits, +1);
if (!IsLinux() || futex((void *)&mutex->owner, FUTEX_WAIT, owner, 0, 0)) {
if (++tries & 7) {
__builtin_ia32_pause();
} else {
sched_yield();
}
}
atomic_fetch_add(&mutex->waits, -1);
}
++mutex->reent;
return 0;

19
libc/intrin/pthread_mutex_trylock.c
View file

@ -16,9 +16,9 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/atomic.h"
#include "libc/calls/calls.h"
#include "libc/errno.h"
#include "libc/intrin/lockcmpxchgp.h"
#include "libc/intrin/pthread.h"
#include "libc/nexgen32e/threaded.h"
@ -26,18 +26,15 @@
* Tries to acquire mutex.
*/
int pthread_mutex_trylock(pthread_mutex_t *mutex) {
int rc, me, owner = 0;
if (__threaded) {
me = gettid();
if (!_lockcmpxchgp(&mutex->owner, &owner, me) && owner == me) {
rc = 0;
++mutex->reent;
} else {
rc = EBUSY;
}
} else {
int rc, me, owner;
me = gettid();
owner = 0;
if (!atomic_compare_exchange_strong(&mutex->owner, &owner, me) &&
owner == me) {
rc = 0;
++mutex->reent;
} else {
rc = EBUSY;
}
return rc;
}

17
libc/intrin/pthread_mutex_unlock.c
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;