void rtp_recorder_destroy(struct rtp_recorder_t* rr) {
mutex_lock(rr->timer_mutex);
if (rr->synchronization_thread != NULL) {
condition_signal(rr->timer_cond);
mutex_unlock(rr->timer_mutex);
thread_join(rr->synchronization_thread);
mutex_lock(rr->timer_mutex);
thread_destroy(rr->synchronization_thread);
rr->synchronization_thread = NULL;
}
mutex_unlock(rr->timer_mutex);
rtp_socket_destroy(rr->streaming_socket);
rtp_socket_destroy(rr->control_socket);
rtp_socket_destroy(rr->timing_socket);
sockaddr_destroy(rr->remote_control_end_point);
sockaddr_destroy(rr->remote_timing_end_point);
mutex_destroy(rr->timer_mutex);
condition_destroy(rr->timer_cond);
free(rr);
}
//push消息并执行同步操作
static inline void msgque_sync_push(ptq_t ptq)
{
assert(ptq->mode == MSGQ_WRITE);
if(ptq->mode != MSGQ_WRITE) return;
msgque_t que = ptq->que;
mutex_lock(que->mtx);
uint8_t empty = llist_is_empty(&que->share_que);
llist_swap(&que->share_que,&ptq->local_que);
if(empty){
struct dnode *l = dlist_pop(&que->blocks);
if(l){
//if there is a block per_thread_struct wake it up
ptq_t block_ptq = (ptq_t)l;
mutex_unlock(que->mtx);
condition_signal(block_ptq->cond);
}
}
//对所有在can_interrupt中的元素调用回调
while(!dlist_empty(&que->can_interrupt))
{
ptq_t ptq = (ptq_t)dlist_pop(&que->can_interrupt);
ptq->read_que.notify_function(ptq->read_que.ud);
}
mutex_unlock(que->mtx);
}
//加任务
void threadpool_add_task(threadpool_t *pool, void *(*run)(void *arg),void *arg)
{
task_t *newstask = (task_t *)malloc(sizeof(task_t));
newstask->run = run;
newstask->arg = arg;
newstask -> next = NULL;
condition_lock(&pool -> ready);
//将任务添加到对列中
if(pool -> first ==NULL)
{
pool -> first = newstask;
}
else
pool -> last -> next = newstask;
pool -> last = newstask;
//如果有等待线程，则唤醒其中一个
if(pool -> idle > 0)
{
condition_signal(&pool -> ready);
}
else if(pool -> counter < pool -> max_threads)
{
pthread_t tid;
pthread_create(&tid,NULL,thread_routine,pool);
pool -> counter++;
}
condition_unlock(&pool -> ready);
}
void
osfmach3_setrun(
struct task_struct *task)
{
ASSERT(holding_uniproc());
ASSERT(task->state != TASK_ZOMBIE);
ASSERT(task->state >= TASK_RUNNING && task->state <= TASK_SWAPPING);
condition_signal(&task->osfmach3.thread->mach_wait_channel);
}
/* increase available_resources by count */
int increase_count(int count) {
sem_wait(&lock);
printf("i curr:%d +%d\n", available_resources, count);
available_resources += count;
condition_signal();
if (next_count > 0)
sem_post(&next);
else
sem_post(&lock);
return 0;
}
static error_t
hurdio_assert_dtr ()
{
if (ioport == MACH_PORT_NULL)
{
assert_dtr = 1;
condition_signal (&hurdio_assert_dtr_condition);
}
return 0;
}
void thread_resume(thread_t t) {
pthread_t self = pthread_self();
if(self == t->threadid)
return;//只能有其它线程resume
mutex_lock(t->mtx);
if(t->is_suspend) {
t->is_suspend = 0;
condition_signal(t->cond);
}
mutex_unlock(t->mtx);
}
static void*
start_routine(void *_)
{
struct start_arg *starg = (struct start_arg*)_;
void *arg = starg->arg;
void*(*routine)(void*) = starg->routine;
mutex_lock(starg->mtx);
if(!starg->running){
starg->running = 1;
mutex_unlock(starg->mtx);
condition_signal(starg->cond);
}
void *ret = routine(arg);
clear_thdmailbox();
return ret;
}
/**
* @brief Get an event
*
* Wait for an event from the standard input.
*
* @param ui User Interface.
*/
static void ui_read_input(UI *ui)
{
char *buffer;
char cmd[8];
Event *event = ui->event;
Play *play = ui->play;
buffer = string_read_line(stdin);
if (buffer == NULL) {
if (ferror(stdin)) {
if (errno == EINTR) clearerr(stdin);
else fatal_error("stdin is broken\n");
} else if (feof(stdin)) {
buffer = string_duplicate("eof");
}
event->loop = false;
} else {
if (ui->type == UI_GTP) gtp_preprocess(buffer);
parse_word(buffer, cmd, 5);
string_to_lowercase(cmd);
if (strcmp(cmd, "stop") == 0) {
event_clear_messages(event);
info("<stop>\n");
play_stop(play);
if (ui->type == UI_GGS) play_stop(play + 1);
} else if (ui->type == UI_NBOARD && strcmp(cmd, "ping") == 0) {
play_stop(play);
} else if (ui->type == UI_XBOARD && strcmp(cmd, "?") == 0) {
play_stop(play);
} else {
if (strcmp(cmd, "quit") == 0 || strcmp(cmd, "q") == 0) {
event_clear_messages(event);
play_stop(play);
if (ui->type == UI_GGS) play_stop(play + 1);
event->loop = false;
}
}
}
if (buffer) {
lock(event);
event_add_message(event, buffer);
condition_signal(event);
unlock(event);
}
}
void WA_unlock(WA_recursiveLock _lock)
#endif
{
CThreadRecursiveLock *lock = (CThreadRecursiveLock *)_lock;
#ifdef EXTRA_DEBUGGING_LOGS
if (_lock != logMutex)
WOLog(WO_DBG, "thread unlocking %s from %s:%d", cthread_self(), lock->name, file, line);
#endif
mutex_lock(&lock->m);
lock->lockCount--;
if (lock->lockCount == 0)
{
lock->lockingThread = NULL;
condition_signal(&lock->c);
}
mutex_unlock(&lock->m);
}
void thread_resume(thread_t t)
{
pthread_t self = pthread_self();
#ifdef _MINGW_
if(self.p != t->threadid.p || self.x != t->threadid.x)
return;
#else
if(self == t->threadid)
return;//只能有其它线程resume
#endif
mutex_lock(t->mtx);
if(t->is_suspend)
{
t->is_suspend = 0;
condition_signal(t->cond);
}
mutex_unlock(t->mtx);
}
static inline mq_sync_push(mq_t m,struct per_thread_struct *pts)
{
mutex_lock(m->mtx);
uint8_t empty = link_list_is_empty(m->share_list);
link_list_swap(m->share_list,pts->local_push_q);
if(empty)
{
struct double_link_node *l = double_link_pop(&m->blocks);
if(l)
{
//if there is block per_thread_struct wake it up
struct per_thread_struct *block_pts = (struct per_thread_struct *)((uint8_t*)l - sizeof(struct list_node));
mutex_unlock(m->mtx);
condition_signal(block_pts->cond);
return;
}
}
mutex_unlock(m->mtx);
}
/* 向线程池中添加线程 */
void threadpool_add_task( threadpool_t* pool, void* (*run)( void* arg ), void* arg )
{
task_t* newtask = ( task_t* ) malloc ( sizeof( task_t ) ) ; // 创建线程控制块
newtask->run = run ; // 设置线程的回调函数
newtask->arg = arg ; // 设置回调函数的参数
newtask->next = NULL ; // 新加入的线程会被添加到链表尾部
/************************** 进入临界区 ***********************/
condition_lock( &pool->ready ) ; // 拿到互斥锁
// 把新创建的 TCB 添加到线程链表中
if ( pool->first == NULL )
{
// 如果线程链表为空，则 TCB 作为链表头部
pool->first = newtask ;
}
else
{
// 如果线程链表不为空，加入到链表尾部
pool->last->next = newtask ;
}
pool->last = newtask ; // 修改链表尾指针
// 如果有空闲线程，那么就唤醒空闲线程
if ( pool->idle > 0 )
{
condition_signal( &pool->ready ) ; // 通知等待在条件变量上的空闲线程
}
else if ( pool->counter < pool->max_threads )
{
// 如果没有空闲线程可用，而且当前线程数量小于线程池的容量，我们就创建一个线程
pthread_t tid ;
pthread_create( &tid, NULL, thread_runtime, pool ) ; // 指定新线程的起始函数为 thread_runtime，把线程池传递给 thread_runtime
++ pool->counter ;
}
condition_unlock( &pool->ready ) ; // 释放互斥锁
/************************** 退出临界区 ***********************/
}
/* Insert 'm' into the mailbox 'q' */
int mbox_send(int q, msg_t * m)
{
int msgSize = MSG_SIZE(m);
lock_acquire(&Q[q].l);
print_trace("Send", q, msgSize);
/* Wait until there is enough space */
while (space_available(&Q[q]) < msgSize) {
condition_wait(&Q[q].l, &Q[q].moreSpace);
}
/* copy from message m (header and body) to Q[q].buffer */
msg_to_buffer((char *) m, msgSize, Q[q].buffer, Q[q].head);
Q[q].head = (Q[q].head + msgSize) % BUFFER_SIZE;
/* Send of one message can only satisfy one reader. */
condition_signal(&Q[q].moreData);
Q[q].count++;
lock_release(&Q[q].l);
return 1;
}
void _rtp_recorder_process_timing_packet(struct rtp_recorder_t* rr, struct rtp_packet_t* packet) {
assert(packet != NULL);
double current_time = hardware_get_time();
double reference_time = _ntp_time_to_hardware_time(*(struct ntp_time*)(packet->packet_data + 4));
double received_time = _ntp_time_to_hardware_time(*(struct ntp_time*)(packet->packet_data + 12));
double send_time = _ntp_time_to_hardware_time(*(struct ntp_time*)(packet->packet_data + 20));
double delay = ((current_time - reference_time) - (send_time - received_time)) / 2;
double client_time = received_time + (send_time - received_time) + delay;
log_message(LOG_INFO, "Client time is %1.6f (peer delay: %1.6f)", client_time, delay);
audio_queue_set_remote_time(rr->audio_queue, client_time);
rr->initial_time_response_count++;
if (rr->initial_time_response_count == 2)
condition_signal(rr->timer_cond);
}
void *thread_routine(void *arg)
{
struct timespec abstime;
int timeout;
printf("thread 0x%0x is starting\n",(int)pthread_self());
threadpool_t *pool = (threadpool_t *)arg;
while(1)
{
timeout = 0;
condition_lock(&pool -> ready);
pool -> idle++;
//等待队列有任务到来或者线程池销毁的通知
while(pool -> first == NULL && !pool -> quit)
{
printf("thread 0x%0x is waiting\n",(int)pthread_self());
clock_gettime(CLOCK_REALTIME,&abstime);
abstime.tv_sec += 2;
int status=condition_timewait(&pool -> ready,&abstime);
if(status == ETIMEDOUT)
{
printf("thread 0x%0x is wait timed out\n",(int)pthread_self());
timeout = 1;
break;
}
}
//等到到条件，处于工作状态
pool -> idle--;
if(pool -> first != NULL)
{
task_t *t = pool -> first;
pool -> first = t -> next;
//需要先解锁，以便添加新任务。其他消费者线程能够进入等待任务。
condition_unlock(&pool -> ready);
t -> run(t->arg);
free(t);
condition_lock(&pool -> ready);
}
//等待线程池销毁的通知
if(pool -> quit && pool ->first == NULL)
{
pool -> counter--;
if(pool->counter == 0)
{
condition_signal(&pool -> ready);
}
condition_unlock(&pool->ready);
//跳出循环之前要记得解锁
break;
}
if(timeout &&pool -> first ==NULL)
{
pool -> counter--;
condition_unlock(&pool->ready);
//跳出循环之前要记得解锁
break;
}
condition_unlock(&pool -> ready);
}
printf("thread 0x%0x is exiting\n",(int)pthread_self());
return NULL;
}
void thread_wrap(){
current_thread->initial_function(current_thread->initial_argument);
current_thread->state = DONE;
condition_signal(current_thread->condList);
yield();
};
void
root_update_schedule ()
{
condition_signal (&update_wakeup);
}
int
ldap_pvt_thread_cond_signal( ldap_pvt_thread_cond_t *cond )
{
condition_signal( cond );
return( 0 );
}
void syscall_condition_signal(cond_t* cond, lock_t* lock)
{
condition_signal(cond, lock);
}
void* thread_routine(void* arg)
{
struct timespec abstime;
int timeout;
printf("thread 0x%x is starting ...\n", (int)pthread_self());
threadpool_t* pool = (threadpool_t*)arg;
while(1)
{
timeout = 0;
condition_lock(&pool->ready);
pool->idle++;
while(pool->first == NULL && !pool->quit)
{
printf("thread 0x%x is waiting ...\n", (int)pthread_self());
clock_gettime(CLOCK_REALTIME, &abstime);
abstime.tv_sec += 2;
int status = condition_timewait(&pool->ready, &abstime);
if(status == ETIMEDOUT)
{
printf("thread 0x%x is wait timed out ...\n", (int)pthread_self());
timeout = 1;
break;
}
}
pool->idle--;
if(pool->first != NULL)
{
task_t* t = pool->first;
pool->first = t->next;
condition_unlock(&pool->ready);
t->run(t->arg);
free(t);
condition_lock(&pool->ready);
}
if(pool->quit && pool->first == NULL)
{
if(--pool->counter == 0)
condition_signal(&pool->ready);
condition_unlock(&pool->ready);
break;
}
if(timeout && pool->first == NULL)
{
pool->counter--;
condition_unlock(&pool->ready);
break;
}
condition_unlock(&pool->ready);
}
printf("thread 0x%x is exiting ...\n", (int)pthread_self());
return NULL;
}
/* 线程入口函数 */
void* thread_runtime( void* arg )
{
struct timespec abstime ;
int timeout ;
// 拿到线程池对象
threadpool_t* pool = ( threadpool_t* ) arg ;
while ( 1 )
{
timeout = 0 ;
/************************** 进入临界区 ***********************/
condition_lock( &pool->ready ) ;
// 空闲线程数加 1
++ pool->idle ;
// 如果线程链表为空，而且线程池处于运行状态，那么线程就该等待任务的到来
while ( pool->first == NULL && pool->quit == 0 )
{
printf( "thread 0x%x is waiting\n", (int)pthread_self() ) ;
clock_gettime( CLOCK_REALTIME, &abstime ) ;
abstime.tv_sec += 2 ;
int status = condition_timedwait( &pool->ready, &abstime ) ;
if ( status == ETIMEDOUT )
{
printf( "thread 0x%x is wait timed out\n", (int)pthread_self() ) ;
timeout = 1 ;
break ;
}
}
// 如果线程等待超时
if ( timeout && pool->first == NULL )
{
-- pool->counter ; // 那么线程数量减 1
condition_unlock( &pool->ready ) ; // 释放互斥锁
break ; // 跳出 while，注意，break 之后，线程入口函数执行完毕，线程将不复存在
}
// 线程获得任务
-- pool->idle ; // 线程池空闲数减 1
if ( pool->first != NULL )
{
task_t* t = pool->first ; // 从链表头部取出 TCB
pool->first = t->next ; // 指向下一个 TCB
// 执行任务需要一定时间，所以要先解锁
// 以便生产者可以往链表中加入任务
// 以及其他消费者可以等待任务
condition_unlock( &pool->ready ) ;
t->run( t->arg ) ; // 执行任务的回调函数
free( t ) ; // 任务执行完毕，销毁 TCB
condition_lock( &pool->ready ) ;
}
// quit == 1 说明要销毁线程池
if ( pool->quit && pool->first == NULL )
{
-- pool->counter ;
if ( pool->counter == 0 )
{
condition_signal( &pool->ready ) ; // 唤醒等待在条件变量上的主线程
}
condition_unlock( &pool->ready ) ;
break ;
}
condition_unlock( &pool->ready ) ;
/************************** 退出临界区 ***********************/
}
return NULL ;
}