/* Restart all threads that are waiting on the condition variable */
int acl_pthread_cond_broadcast(acl_pthread_cond_t *cond)
{
const char *myname = "acl_pthread_cond_broadcast";
if (cond == NULL) {
acl_msg_error("%s, %s(%d): input invalid",
__FILE__, myname, __LINE__);
return -1;
}
/* If there are waiting threads not already signalled, then
* signal the condition and wait for the thread to respond.
*/
acl_pthread_mutex_lock(cond->lock);
if (cond->waiting > cond->signals) {
int i, num_waiting;
num_waiting = (cond->waiting - cond->signals);
cond->signals = cond->waiting;
for (i = 0; i < num_waiting; ++i)
acl_sem_post(cond->wait_sem);
/* Now all released threads are blocked here, waiting for us.
* Collect them all (and win fabulous prizes!) :-)
*/
acl_pthread_mutex_unlock(cond->lock);
for (i = 0; i < num_waiting; ++i)
acl_sem_wait(cond->wait_done);
} else
acl_pthread_mutex_unlock(cond->lock);
return 0;
}
bool rpc_request::cond_signal()
{
int status;
status = acl_pthread_mutex_lock(lock_);
if (status != 0)
{
logger_error("pthread_mutex_lock error: %d", status);
return false;
}
cond_count_++;
status = acl_pthread_cond_signal(cond_);
if (status != 0)
{
(void) acl_pthread_mutex_unlock(lock_);
logger_error("pthread_cond_signal error: %d", status);
return false;
}
status = acl_pthread_mutex_unlock(lock_);
if (status != 0)
{
logger_error("pthread_mutex_unlock error: %d", status);
return false;
}
return true;
}
void hook_epoll(void)
{
static acl_pthread_mutex_t __lock = PTHREAD_MUTEX_INITIALIZER;
static int __called = 0;
(void) acl_pthread_mutex_lock(&__lock);
if (__called) {
(void) acl_pthread_mutex_unlock(&__lock);
return;
}
__called++;
__sys_epoll_create = (epoll_create_fn) dlsym(RTLD_NEXT, "epoll_create");
acl_assert(__sys_epoll_create);
__sys_epoll_wait = (epoll_wait_fn) dlsym(RTLD_NEXT, "epoll_wait");
acl_assert(__sys_epoll_wait);
__sys_epoll_ctl = (epoll_ctl_fn) dlsym(RTLD_NEXT, "epoll_ctl");
acl_assert(__sys_epoll_ctl);
(void) acl_pthread_mutex_unlock(&__lock);
}
void * acl_atomic_xchg(ACL_ATOMIC *self, void *value)
{
#ifndef HAS_ATOMIC
void *old;
acl_pthread_mutex_lock(&self->lock);
old = self->value;
self->value = value;
acl_pthread_mutex_unlock(&self->lock);
return old;
#elif defined(ACL_WINDOWS)
return InterlockedExchangePointer((volatile PVOID*)&self->value, value);
#elif defined(ACL_LINUX)
# if defined(__GNUC__) && (__GNUC__ >= 4)
return __sync_lock_test_and_set(&self->value, value);
# else
(void) self;
(void) value;
acl_msg_error("%s(%d), %s: not support!",
__FILE__, __LINE__, __FUNCTION__);
return NULL;
# endif
#endif
}
bool locker::lock()
{
#ifdef ACL_HAS_SPINLOCK
if (spinlock_)
{
if (pthread_spin_lock(spinlock_) != 0)
return false;
}
else
#endif
if (mutex_)
{
if (acl_pthread_mutex_lock(mutex_) != 0)
return false;
}
if (fHandle_ == ACL_FILE_INVALID)
return true;
int operation = ACL_FLOCK_OP_EXCLUSIVE;
if (acl_myflock(fHandle_, ACL_FLOCK_STYLE_FCNTL, operation) == 0)
return true;
if (mutex_)
acl_assert(acl_pthread_mutex_unlock(mutex_) == 0);
return false;
}
static void run_thread(void *arg)
{
RUN_CTX *ctx = (RUN_CTX*) arg;
acl_pthread_mutex_lock(&__mutex);
acl_vstream_fprintf(ctx->fp, "hello world, hello world, hello world, hello world, i: %d\n", ctx->i);
acl_pthread_mutex_unlock(&__mutex);
acl_myfree(ctx);
}
static void test_thread(void)
{
acl_pthread_t tid;
acl_pthread_attr_t attr;
THREAD_CTX ctx, *pctx;
void *return_arg;
unsigned int id;
acl_pthread_mutex_lock(&mutex_init1);
printf("lock mutex_init1 ok\n");
acl_pthread_mutex_lock(&mutex_init2);
printf("lock mutex_init2 ok\n");
ctx.i = 0;
acl_pthread_attr_init(&attr);
acl_pthread_create(&tid, &attr, test_thread_fn, &ctx);
acl_pthread_join(tid, (void**) &return_arg);
pctx = (THREAD_CTX*) return_arg;
memcpy(&id, &tid, sizeof(id));
printf("ctx.i=%d, pctx->i=%d, the thread id is: %u\r\n",
ctx.i, pctx->i, id);
}
bool thread_mutex::lock(void)
{
int ret = acl_pthread_mutex_lock(mutex_);
if (ret)
{
#ifdef ACL_UNIX
acl_set_error(ret);
logger_error("pthread_mutex_lock error %s", last_serror());
#endif
return false;
}
return true;
}
static DWORD WINAPI RunThreadWrap(LPVOID data)
#endif
{
acl_pthread_t *thread = (acl_pthread_t *) data;
void *return_arg;
ACL_FIFO *tls_value_list_ptr = tls_value_list_get();
unsigned long *tid = 0;
/* 只是为了避免与主线程的 h_thread->handle = handle 产生冲突 */
if (__thread_inited)
acl_pthread_mutex_lock(&__thread_lock);
if (__thread_inited)
acl_pthread_mutex_unlock(&__thread_lock);
thread->id = acl_pthread_self();
return_arg = (void*) thread->start_routine(thread->routine_arg);
/* 释放由 acl_pthread_setspecific 添加的线程局部变量 */
while (1) {
TLS_VALUE *tls_value = private_fifo_pop(tls_value_list_ptr);
if (tls_value == NULL)
break;
if (tls_value->tls_key == NULL
|| tls_value->tls_key->destructor == NULL
|| tls_value->tls_key->key < 0
|| tls_value->tls_key->key >= ACL_PTHREAD_KEYS_MAX)
{
acl_default_free(__FILE__, __LINE__, tls_value);
continue;
}
tls_value->tls_key->destructor(tls_value->value);
acl_default_free(__FILE__, __LINE__, tls_value);
}
private_fifo_free(tls_value_list_ptr, NULL);
/* 如果线程创建时为分离方式则需要关闭线程句柄 */
if (thread->detached) {
if (!CloseHandle(thread->handle)) {
acl_msg_error("close handle error(%s)",
acl_last_serror());
}
}
acl_default_free(__FILE__, __LINE__, thread);
return (DWORD) return_arg;
}
int acl_mbox_send(ACL_MBOX *mbox, void *msg)
{
int ret;
acl_pthread_mutex_lock(mbox->lock);
acl_ypipe_write(mbox->ypipe, msg);
ret = acl_ypipe_flush(mbox->ypipe);
acl_pthread_mutex_unlock(mbox->lock);
if (ret == 0)
return 0;
mbox->nsend++;
if (acl_vstream_writen(mbox->out, __key, sizeof(__key) - 1)
== ACL_VSTREAM_EOF)
{
return -1;
} else
return 0;
}
/* Restart one of the threads that are waiting on the condition variable */
int acl_pthread_cond_signal(acl_pthread_cond_t *cond)
{
const char *myname = "acl_pthread_cond_signal";
if (cond == NULL) {
acl_msg_error("%s, %s(%d): input invalid",
__FILE__, myname, __LINE__);
return -1;
}
/* If there are waiting threads not already signalled, then
* signal the condition and wait for the thread to respond.
*/
acl_pthread_mutex_lock(cond->lock);
if (cond->waiting > cond->signals) {
++cond->signals;
acl_sem_post(cond->wait_sem);
acl_pthread_mutex_unlock(cond->lock);
acl_sem_wait(cond->wait_done);
} else
acl_pthread_mutex_unlock(cond->lock);
return 0;
}
int acl_pthread_create(acl_pthread_t *thread, acl_pthread_attr_t *attr,
void *(*start_routine)(void *), void *arg)
{
const char *myname = "acl_pthread_create";
acl_pthread_t *h_thread;
HANDLE handle;
unsigned long id, flag;
if (thread == NULL) {
acl_msg_error("%s, %s(%d): input invalid",
__FILE__, myname, __LINE__);
acl_set_error(ACL_EINVAL);
return ACL_EINVAL;
}
acl_pthread_once(&__create_thread_control_once, acl_pthread_init_once);
memset(thread, 0, sizeof(acl_pthread_t));
h_thread = acl_default_calloc(__FILE__, __LINE__,
1, sizeof(acl_pthread_t));
if (h_thread == NULL) {
acl_msg_error("%s, %s(%d): calloc error(%s)",
__FILE__, myname, __LINE__, acl_last_serror());
acl_set_error(ACL_ENOMEM);
return ACL_ENOMEM;
}
if (attr != NULL)
h_thread->detached = attr->detached;
else
h_thread->detached = 1;
h_thread->start_routine = start_routine;
h_thread->routine_arg = arg;
if (__thread_inited) {
acl_pthread_mutex_lock(&__thread_lock);
flag = 0;
} else
flag = CREATE_SUSPENDED;
#ifdef ACL_WIN32_STDC
h_thread->handle = handle = (HANDLE) _beginthreadex(NULL,
attr ? (unsigned int) attr->stacksize : 0,
RunThreadWrap,
(void *) h_thread,
flag,
&id);
#else
h_thread->handle = handle = CreateThread(NULL,
attr ? attr->stacksize : 0,,
RunThreadWrap,
h_thread,
flag,
&id);
#endif
if (__thread_inited)
acl_pthread_mutex_unlock(&__thread_lock);
else if (flag == CREATE_SUSPENDED && handle != 0)
ResumeThread(handle);
if (handle == 0) {
acl_msg_error("%s, %s(%d): CreateThread error(%s)",
__FILE__, myname, __LINE__, acl_last_serror());
return -1;
}
thread->start_routine = start_routine;
thread->routine_arg = arg;
thread->id = id;
thread->handle = 0;
/* 根据线程的属性来确定线程创建时是分离模式还是非分离模式 */
if (attr == NULL || attr->detached) {
thread->detached = 1;
return 0;
}
thread->detached = 0;
thread->handle = handle;
return 0;
}
bool rpc_request::cond_wait(int timeout /* = -1 */)
{
int status;
status = acl_pthread_mutex_lock(lock_);
if (status != 0)
{
logger_error("pthread_mutex_lock error: %d", status);
return false;
}
if (--cond_count_ >= 0)
{
status = acl_pthread_mutex_unlock(lock_);
if (status != 0)
{
logger_error("pthread_mutex_unlock error: %d", status);
return false;
}
return true;
}
if (timeout < 0)
{
status = acl_pthread_cond_wait(cond_, lock_);
if (status != 0)
{
logger_error("pthread_cond_wait error: %d", status);
status = acl_pthread_mutex_unlock(lock_);
if (status != 0)
logger_error("pthread_mutex_unlock error: %d", status);
return false;
}
status = acl_pthread_mutex_unlock(lock_);
if (status != 0)
{
logger_error("pthread_mutex_unlock error: %d", status);
return false;
}
return true;
}
struct timeval tv;
struct timespec when_ttl;
gettimeofday(&tv, NULL);
when_ttl.tv_sec = tv.tv_sec + timeout / 1000;
when_ttl.tv_nsec = tv.tv_usec * 1000 + (timeout % 1000) * 1000;
wait_timedout_ = false;
status = acl_pthread_cond_timedwait(cond_, lock_, &when_ttl);
if (status != 0)
{
if (status == ACL_ETIMEDOUT)
wait_timedout_ = true;
else
logger_error("pthread_cond_timedwait error: %d", status);
status = acl_pthread_mutex_unlock(lock_);
if (status != 0)
logger_error("pthread_mutex_unlock error: %d", status);
return false;
}
else
{
status = acl_pthread_mutex_unlock(lock_);
if (status != 0)
{
logger_error("pthread_mutex_unlock error: %d", status);
return false;
}
return true;
}
}
static void mempool_bench_test(const char *label, int mutex, int loop, acl_mem_type type, int size)
{
int i = 0;
time_t begin = 0, end = 0;
void *buf;
#ifdef MUTEX_INIT
acl_pthread_mutex_t lock;
#elif defined(WIN32)
acl_pthread_mutex_t lock;
#define MUTEX_INIT
#else
acl_pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
#endif
if (mutex) {
#ifdef MUTEX_INIT
acl_pthread_mutex_init(&lock, NULL);
#endif
time(&begin);
while (i++ < loop) {
acl_pthread_mutex_lock(&lock);
acl_pthread_mutex_unlock(&lock);
}
time(&end);
printf("lock and unkock, loop %d, time cost is %ld\r\n", loop, (long int) end - begin);
i = 0;
if (type > ACL_MEM_TYPE_NONE && type < ACL_MEM_TYPE_MAX) {
time(&begin);
while (i++ < loop) {
acl_pthread_mutex_lock(&lock);
buf = acl_allocator_mem_alloc(__var_allocator, type);
acl_pthread_mutex_unlock(&lock);
acl_pthread_mutex_lock(&lock);
acl_allocator_mem_free(__var_allocator, type, buf);
acl_pthread_mutex_unlock(&lock);
}
time(&end);
} else if (type == MEM_TYPE_GROSS) {
acl_pthread_mutex_lock(&lock);
buf = acl_allocator_membuf_alloc(__FILE__, __LINE__,
__var_allocator, size);
acl_pthread_mutex_unlock(&lock);
acl_pthread_mutex_lock(&lock);
acl_allocator_membuf_free(__FILE__, __LINE__,
__var_allocator, buf);
acl_pthread_mutex_unlock(&lock);
} else {
time(&begin);
while (i++ < loop) {
acl_pthread_mutex_lock(&lock);
buf = MALLOC(size);
acl_pthread_mutex_unlock(&lock);
acl_pthread_mutex_lock(&lock);
FREE(buf);
acl_pthread_mutex_unlock(&lock);
}
time(&end);
}
#ifdef MUTEX_INIT
acl_pthread_mutex_destroy(&lock);
#endif
} else {
if (type > ACL_MEM_TYPE_NONE && type < ACL_MEM_TYPE_MAX) {
time(&begin);
while (i++ < loop) {
buf = acl_allocator_mem_alloc(__var_allocator, type);
acl_allocator_mem_free(__var_allocator, type, buf);
}
time(&end);
} else if (type == MEM_TYPE_GROSS) {
buf = acl_allocator_membuf_alloc(__FILE__, __LINE__,
__var_allocator, size);
acl_allocator_membuf_free(__FILE__, __LINE__,
__var_allocator, buf);
} else {
time(&begin);
while (i++ < loop) {
buf = MALLOC(size);
FREE(buf);
}
time(&end);
}
}
printf("%s: time cost is %ld seconds, count is %d\r\n",
label, (long int) end - begin, loop);
}
void hook_io(void)
{
static acl_pthread_mutex_t __lock = PTHREAD_MUTEX_INITIALIZER;
static int __called = 0;
(void) acl_pthread_mutex_lock(&__lock);
if (__called) {
(void) acl_pthread_mutex_unlock(&__lock);
return;
}
__called++;
__sys_sleep = (sleep_fn) dlsym(RTLD_NEXT, "sleep");
acl_assert(__sys_sleep);
__sys_pipe = (pipe_fn) dlsym(RTLD_NEXT, "pipe");
acl_assert(__sys_pipe);
#ifdef HAS_PIPE2
__sys_pipe2 = (pipe2_fn) dlsym(RTLD_NEXT, "pipe2");
acl_assert(__sys_pipe2);
#endif
__sys_popen = (popen_fn) dlsym(RTLD_NEXT, "popen");
acl_assert(__sys_popen);
__sys_pclose = (pclose_fn) dlsym(RTLD_NEXT, "pclose");
acl_assert(__sys_pclose);
__sys_close = (close_fn) dlsym(RTLD_NEXT, "close");
acl_assert(__sys_close);
__sys_mkdir = (mkdir_fn) dlsym(RTLD_NEXT, "mkdir");
acl_assert(__sys_mkdir);
__sys_stat = (stat_fn) dlsym(RTLD_NEXT, "__xstat");
acl_assert(__sys_stat);
__sys_fstat = (fstat_fn) dlsym(RTLD_NEXT, "__fxstat");
acl_assert(__sys_fstat);
__sys_read = (read_fn) dlsym(RTLD_NEXT, "read");
acl_assert(__sys_read);
__sys_readv = (readv_fn) dlsym(RTLD_NEXT, "readv");
acl_assert(__sys_readv);
__sys_recv = (recv_fn) dlsym(RTLD_NEXT, "recv");
acl_assert(__sys_recv);
__sys_recvfrom = (recvfrom_fn) dlsym(RTLD_NEXT, "recvfrom");
acl_assert(__sys_recvfrom);
__sys_recvmsg = (recvmsg_fn) dlsym(RTLD_NEXT, "recvmsg");
acl_assert(__sys_recvmsg);
__sys_write = (write_fn) dlsym(RTLD_NEXT, "write");
acl_assert(__sys_write);
__sys_writev = (writev_fn) dlsym(RTLD_NEXT, "writev");
acl_assert(__sys_writev);
__sys_send = (send_fn) dlsym(RTLD_NEXT, "send");
acl_assert(__sys_send);
__sys_sendto = (sendto_fn) dlsym(RTLD_NEXT, "sendto");
acl_assert(__sys_sendto);
__sys_sendmsg = (sendmsg_fn) dlsym(RTLD_NEXT, "sendmsg");
acl_assert(__sys_sendmsg);
#ifndef __USE_FILE_OFFSET64
__sys_sendfile = (sendfile_fn) dlsym(RTLD_NEXT, "sendfile");
acl_assert(__sys_sendfile);
#endif
#ifdef __USE_LARGEFILE64
__sys_sendfile64 = (sendfile64_fn) dlsym(RTLD_NEXT, "sendfile64");
acl_assert(__sys_sendfile64);
#endif
__sys_pread = (pread_fn) dlsym(RTLD_NEXT, "pread");
acl_assert(__sys_pread);
__sys_pwrite = (pwrite_fn) dlsym(RTLD_NEXT, "pwrite");
acl_assert(__sys_pwrite);
__sys_pread64 = (pread64_fn) dlsym(RTLD_NEXT, "pread64");
acl_assert(__sys_pread64);
__sys_pwrite64 = (pwrite64_fn) dlsym(RTLD_NEXT, "pwrite64");
acl_assert(__sys_pwrite64);
(void) acl_pthread_mutex_unlock(&__lock);
}
/* Wait on the condition variable for at most 'ms' milliseconds.
* The mutex must be locked before entering this function!
* The mutex is unlocked during the wait, and locked again after the wait.
Typical use:
Thread A:
pthread_mutex_lock(lock);
while ( ! condition ) {
SDL_CondWait(cond);
}
pthread_mutex_unlock(lock);
Thread B:
pthread_mutex_lock(lock);
...
condition = true;
...
pthread_mutex_unlock(lock);
*/
int acl_pthread_cond_timedwait(acl_pthread_cond_t *cond,
acl_pthread_mutex_t *mutex, const struct timespec *timeout)
{
const char *myname = "acl_pthread_cond_timedwait";
int retval;
if (cond == NULL) {
acl_msg_error("%s, %s(%d): input invalid",
__FILE__, myname, __LINE__);
return -1;
}
/* Obtain the protection mutex, and increment the number of waiters.
* This allows the signal mechanism to only perform a signal if there
* are waiting threads.
*/
acl_pthread_mutex_lock(cond->lock);
++cond->waiting;
acl_pthread_mutex_unlock(cond->lock);
/* Unlock the mutex, as is required by condition variable semantics */
acl_pthread_mutex_unlock(mutex);
/* Wait for a signal */
if (timeout == NULL)
retval = acl_sem_wait(cond->wait_sem);
else {
int ms;
struct timeval tv;
gettimeofday(&tv, NULL);
ms = (int) (timeout->tv_sec * 1000 + timeout->tv_nsec / 1000000);
ms -= tv.tv_sec * 1000 + tv.tv_usec / 1000;
if (ms < 0)
ms = 0;
retval = acl_sem_wait_timeout(cond->wait_sem, (unsigned int) ms);
}
/* Let the signaler know we have completed the wait, otherwise
* the signaler can race ahead and get the condition semaphore
* if we are stopped between the mutex unlock and semaphore wait,
* giving a deadlock. See the following URL for details:
* http://www-classic.be.com/aboutbe/benewsletter/volume_III/Issue40.html
*/
acl_pthread_mutex_lock(cond->lock);
if (cond->signals > 0) {
/* If we timed out, we need to eat a condition signal */
if (retval > 0)
acl_sem_wait(cond->wait_sem);
/* We always notify the signal thread that we are done */
acl_sem_post(cond->wait_done);
/* Signal handshake complete */
--cond->signals;
}
--cond->waiting;
acl_pthread_mutex_unlock(cond->lock);
/* Lock the mutex, as is required by condition variable semantics */
acl_pthread_mutex_lock(mutex);
return retval;
}