pthread_mutex_t {int__lock;//锁变量, 传给系统调用futex,用作用户空间的锁变量 mutex状态,0表示未占用,1表示占用usignedint__count;//可重入的计数 记录owner线程持有锁的次数int__owner;//被哪个线程占有了 owner线程IDint__kind;//记录mutex的类型,有以下几个取值 PTHREAD_MUTE
先signal pthread_mutex_lock(&lock); pthread_cond_signal(&cond1); pthread_mutex_unl...
// code2 (revision) pthread_mutex_lock(mtx); pass = 1; pthread_cond_signal(cv); ...
inttasks=0,done=0; pthread_mutex_tlock; voiddummy_task(void*arg) { usleep(10000); pthread_mutex_lock(&lock); /* 记录成功完成的任务数 */ done++; pthread_mutex_unlock(&lock); } intmain(intargc,char**argv) { threadpool_t*pool; /* 初始化互斥锁 */ pthread_mutex_init(&lock,NULL);...
(1) Mutex(互斥量):pthread_mutex_*** (2) Spin lock(自旋锁):pthread_spin_*** (3) Condition Variable(条件变量):pthread_con_*** (4) Read/Write lock(读写锁):pthread_rwlock_*** Pthreads提供的Mutex锁操作相关的API主要有: pthread_mutex_lock (pthread_mutex_t *mutex); ...
pthread_mutex_t lock;/* 互斥锁 */ pthread_cond_t notify;/* 条件变量 */ pthread_t *threads;/* 线程数组的起始指针 */ threadpool_task_t *queue;/* 任务队列数组的起始指针 */int thread_count;/* 线程数量 */int queue_size;/* 任务队列长度 */int head;/* 当前任务队列头 */int tail;/...
If pthread_mutex_lock returns a non-zero value, System exception is raised. inline void MutexImpl::lockImpl() { if (pthread_mutex_lock(&_mutex)) throw SystemException("cannot lock mutex"); } Can this exception contain the error code as well? Or if there's some other method which shoul...
The global mutex is one lock. Any code that calls any function that is not known to be reentrant uses the same lock. This prevents dependencies among threads calling library functions and those functions calling other functions, and so on. ...
(HandleUsingDestroyedMutex(pthread_mutex_t*, char const*)+60) #03 pc 0x00000000000b4788 /apex/com.android.runtime/lib64/bionic/libc.so (pthread_mutex_lock+176) #04 pc 0x00000000000b2b1c /apex/com.android.runtime/lib64/bionic/libc.so (pthread_cond_wait+108) #05 pc 0x000000000005697c ...
, when nThreads == nLogicalProcessorcs are running in parallel during a scheduled time slice (no context switch shall occur without interaction) and can interleave access to a ressource without beeing “scheduled out”, because a spin lock has no relation to the sheduler compared to a mutex....