pthread_cond_t * restrict cond, pthread_mutex_t *restrict mutex ); 这里参数cond是条件变量并且mutex是一个互斥的锁变量,这个锁必须提前被线程锁住.当这个函数被执行,调用的线程被强迫释放唯一的锁,释放了之后,线程被挂起直到信号被唤醒.换醒线程的函数是pthread_cond_signal(pthread_cond_t *cond);唤醒等待该...
pthread_mutex_t *restrict mutex ); 这里参数cond是条件变量并且mutex是一个互斥的锁变量,这个锁必须提前被线程锁住.当这个函数被执行,调用的线程被强迫释放唯一的锁,释放了之后,线程被挂起直到信号被唤醒.换醒线程的函数是pthread_cond_signal(pthread_cond_t *cond);唤醒等待该条件的某个线程.pthread_cond_broadc...
cond_wait(object_reserve_wait);/* do we need to request a fresh batch of oids? */if(object_reserve_remaining ==0) {/* the first storage server is considered the master */Transaction *trans = trans_new(storage_servers[0],NULL,message_new());structRsreserve*res;pthread_cond_t*wait; ...
pthread_mutex_lock(&init_lock);while(init_count < nthreads){ pthread_cond_wait(&init_cond,&init_lock); } pthread_mutex_unlock(&init_lock); } 开发者ID:easingz,项目名称:BigHead,代码行数:25,代码来源:link_mining.c 示例10: ide_git_buffer_change_monitor_class_init ▲点赞 1▼ staticvoidi...
#include "pthread.h" #define BUFFER_SIZE 16 /*设置一个整数的圆形缓冲区*/ struct prodcons { int buffer[BUFFER_SIZE]; /*缓冲区数组*/ pthread_mutex_t lock; /*互斥锁*/ int readpos, writepos; /*读写的位置*/ pthread_cond_t notempty; /*缓冲区非空信号*/ ...
1 libsystem_pthread.dylib 0x7ff806df2a6f _pthread_cond_wait + 12492 libc++.1.dylib 0x7ff806d50db3 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chron...
例如,pthreads包,使用pthread_cond来代表这种变量,并且有函数pthread_cond_wait(),它代表一个线程调用等待一个事件的发生;另一个函数,pthread_cond_signal(),另一个线程调用,代表声明等待的线程事件已经发生。 python中的条件变量较之C语言中的来说更容易使用,对于第一层次的条件变量来说,可以使用类threading.Conditi...
pthread_mutex_lock(&p->progress_mutex); while (atomic_load_explicit(&p->state, memory_order_relaxed) != STATE_INPUT_READY) pthread_cond_wait(&p->output_cond, &p->progress_mutex); pthread_mutex_unlock(&p->progress_mutex); } av_frame_move_ref(picture, p->frame); ...
pthread_mutex_t bufferpool::mutex = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t bufferpool::cond = PTHREAD_COND_INITIALIZER;//Constructor and destructor bufferpool::bufferpool(long long unsigned int pool_items) : pool(pool_items) {long long unsigned int i; datapacket_t* dp; ...
#1 __pthread_cond_wait_common (abstime=0x75b18bcfd048, clockid=-1949315136, mutex=0x75b19c820ad0, cond=0x75b18bcfd0a0) at pthread_cond_wait.c:520 #2 __pthread_cond_timedwait (cond=0x75b18bcfd0a0, mutex=0x75b19c820ad0, abstime=0x75b18bcfd048) at pthread_cond_wait.c:656 ...