if (Semaphore_getCount(sem) == 0) { System_printf("Sem blocked in task2\n"); } /* Get access to resource */ Semaphore_pend(sem, BIOS_WAIT_FOREVER); /* do work on locked resource */ resource += 1; /* unlock resource */ Semaphore_post(sem); Task_sleep(10); finishCount++; i...
Bool Semaphore_pend( Semaphore_Handle sem, UInt timeout); Semaphore_pend()的timeout参数允许任务等待到超时(有限等待)、无限期等待(BIOS_WAIT_FOREVER)或根本不等待(BIOS_NO_WAIT)。 2.3 Signaling a Semaphore with Semaphore_post() Void Semaphore_post(Semaphore_Handle sem); 在特定情况下,调用Semaphore...
*/staticvoidtrainingTag_clockHandler(UArg arg){// Store the event.events |= arg;// Wake up the application.Semaphore_post(sem); } 开发者ID:andrewfaf,项目名称:SensorTagTest,代码行数:17,代码来源:trainingTag.c 示例6: USBCDC_handleReceiveCompleted ▲点赞 1▼ uint8_tUSBCDC_handleReceiveComple...
Semaphore_Handle semHandle=Semaphore_handle(&mySemaphore);// 获取信号量句柄// 任务1:获取信号量if(Semaphore_pend(semHandle,BIOS_WAIT_FOREVER))// 尝试获取信号量{// 进入临界区,执行对共享资源的操作// ...Semaphore_post(semHandle);// 释放信号量} 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 代...
cout<<"Fun() is running!"<< endl;sem_post(&g_semaphore);usleep(100); } }intmain(){pthread_thHandle;sem_init(&g_semaphore,0,1);intiRet =pthread_create(&hHandle,NULL, Fun,NULL);//create a thread;if(0!= iRet) { cout <<"Create thread failed!"<< endl; ...
2个函数的传入参数一样,需要传入信号量的数量count,和保存信号量编号的semHandle。计数信号量的最大数量为OS_SEM_COUNTING_MAX_COUNT,二值信号量的最大数量为OS_SEM_BINARY_MAX_COUNT。会进一步调用函数OsSemCreate()实现信号量的创建,下文继续分析。 复制 ...
Semaphore_post(Semaphore_handle(&semUartTaskAlert)); stopUartEmulator(); } } void stopUartEmulator(void) { while(1){ Semaphore_pend(Semaphore_handle(&semUartTaskAlert), BIOS_WAIT_FOREVER); CPUdelay((100 * 1000 * 48) / 3); scifUartStopEmulator(); uartClosed = 1; scifResetT...
HANDLE sem;#ifdefined(NEED_SEM)intleftToUnblock;#endif}; 其方法有: intsem_init (sem_t * sem,intpshared,unsignedintvalue);intsem_destroy (sem_t *sem);intsem_trywait (sem_t *sem);intsem_wait (sem_t *sem);intsem_timedwait (sem_t * sem,conststructtimespec *abstime);intsem_post (...
2个函数的传入参数一样,需要传入信号量的数量count,和保存信号量编号的semHandle。计数信号量的最大数量为OS_SEM_COUNTING_MAX_COUNT,二值信号量的最大数量为OS_SEM_BINARY_MAX_COUNT。会进一步调用函数OsSemCreate()实现信号量的创建,下文继续分析。 LITE_OS_SEC_TEXT_INIT UINT32 LOS_SemCreate(UINT16 count, ...
调用sem_post时，将信号量加一，同时唤醒阻塞在信号量上的线程。2. 互斥量mutex 我们已经知道了互斥量...