multithreading

问题 My question refers specifically to why it was designed that way, due to the unnecessary performance implication. When thread T1 has this code: cv.acquire() cv.wait() cv.release() and thread T2 has this code: cv.acquire() cv.notify() # requires that lock be held cv.release() what happens is that T1 waits and releases the lock, then T2 acquires it, notifies cv which wakes up T1. Now, there is a race-condition between T2's release and T1's reacquiring after returning from wait() . If T1 tries to

问题 I'm looking for a way to exit sleep when an user interrupt arrives - its important to exit sleep rather than do this: interrupt sleep , do ISR processing, and go back to sleep - which is what I'm finding solutions for. I'm looking for something like this in C++ - an equivalent in C is even better: void * timer_thread(void*dummy) { while(1) { // Check if some callbacks are to be given // when all are given, Determine x duration to sleep try { sleep(x); } except(/* the except block should hit

问题 I'm looking for a way to exit sleep when an user interrupt arrives - its important to exit sleep rather than do this: interrupt sleep , do ISR processing, and go back to sleep - which is what I'm finding solutions for. I'm looking for something like this in C++ - an equivalent in C is even better: void * timer_thread(void*dummy) { while(1) { // Check if some callbacks are to be given // when all are given, Determine x duration to sleep try { sleep(x); } except(/* the except block should hit

来源： https://stackoverflow.com/questions/45556440/pyqt-emit-signal-from-threading-thread

来源： https://stackoverflow.com/questions/45556440/pyqt-emit-signal-from-threading-thread

来源： https://stackoverflow.com/questions/45556440/pyqt-emit-signal-from-threading-thread

来源： https://stackoverflow.com/questions/64754236/how-to-run-opencv-videocaptures-read-function-outside-multithreading-class

来源： https://stackoverflow.com/questions/64513948/attributeerror-flask-object-has-no-attribute-count-obj

来源： https://stackoverflow.com/questions/64513948/attributeerror-flask-object-has-no-attribute-count-obj

来源： https://stackoverflow.com/questions/64618494/how-to-run-a-algorithm-on-a-separate-thread-while-updating-a-progressbar