publicclassMySemaphore{// ...// 等待信号量publicvoidwaitSemaphore(){try{// 调用acquire方法等待信号量的值变为大于0semaphore.acquire();}catch(InterruptedExceptione){e.printStackTrace();}}// 发送信号量publicvoidpostSemaphore(){// 调用release方法发送信号量,将信号量的值加1semaphore.release();}} 1...
extern int sem_init __P ((sem_t *__sem, int __pshared, unsigned int __value)); sem为指向信号量结构的一个指针;pshared不为0时此信号量在进程间共享,否则只能为当前进程的所有线程共享;value给出了信号量的初始值。 函数sem_post( sem_t *sem )用来增加信号量的值。当有线程阻塞在这个信号量上...
sem_wait(&upData->uart_begin); if(!upData->uart_inited) { sem_post(&upData->uart_end); break; } //No message to upload if(upData->messageCnt <=0) sem_wait(&upData->uart_begin); upData->SYNCCode = SYNCDATA1; #if1 if(!CRCCheck((uuint8*)upData,Send))//CRC { LOGE("u...
(sem_t* __sem, int* __value); int sem_init(sem_t* __sem, int __shared, unsigned int __value); int sem_post(sem_t* __sem); int sem_timedwait(sem_t* __sem, const struct timespec* __ts); /* * POSIX only supports using sem_timedwait() with CLOCK_REALTIME, however that ...
continue_parent_sem.Post(); LOGE("ProcessMappings failed"); return 1; } // malloc must be enabled to call fork, at_fork handlers take the same // locks as ScopedDisableMalloc. All threads are paused in ptrace, so // memory state is still consistent. Unfreeze the original thread so it...
Android上层触发关机的入口很多,但最终几乎都是调用ShutdownThread.shutdown来实现。如下是一些常见的调用关机的点: StatusBarManagerService#shutdown, 这个主要是对接SystemUI(StatusBarManager是Android 系统中的一个服务,用于管理状态栏和快速设置等组件) WindowManagerService#shutdown, 以WindowManagerFuncs接口提供给系统...
问sem_timedwait与AndroidEN一、创建一个HTML网址进行测试 webView.html 1. ...
as ScopedDisableMalloc. All threads are paused in ptrace, so// memory state is still consistent. Unfreeze the original thread so it// can drop the malloc locks, it will block until the collection thread// exits.thread_capture.ReleaseThread(parent_tid);continue_parent_sem.Post();// fork a...
ipc ipc/sem: Fix dangling sem_array access in semtimedop race Dec 8, 2022 kernel Revert "ANDROID: sched: fair: balance for single core cluster" Apr 13, 2024 lib cpumask: Add optimized helpers when NR_CPUS fits in a long Apr 6, 2024 mm ANDROID: ashmem: Add shmem_set_file to mm/shm...
sem_post(&sem_w);// 释放一个写资源 } return (void *)0; } int main(int argc, char **argv) { pthread_t thread[2*N]; int i; pthread_mutex_init(&mutex_w,NULL); pthread_mutex_init(&mutex_r,NULL); sem_init(&sem_w,0,N); ...