timeout

TcpClient BeginConnect timeout

别等时光非礼了梦想. 提交于 2020-08-05 19:18:25
问题 How can setting a custom timeout for BeginConnect async call be accomplished in c#? It is very useful, while connecting to a host with a chance of not listening on given port. Each such call wastes around 15s of time before releasing the Thread. I have following code, as advised in many stackoverflow answers: public bool Test() { using (var tcp = new TcpClient()) { var c = tcp.BeginConnect(IPAddress.Parse("8.8.8.8"), 8080, null, null); var success = c.AsyncWaitHandle.WaitOne(TimeSpan

“Error Code: 1205. Lock wait timeout exceeded; try restarting transaction” on delete event

巧了我就是萌 提交于 2020-08-05 10:03:27
问题 I'm trying to delete a row in my table delete from tbllink where linkid=243 but i keep getting that error message: Error Code: 1205. Lock wait timeout exceeded; try restarting transaction As mentioned in other questions, I tried running : show open tables where in_use>0; This returned 0 results. I also tried running: show processlist This returned these columns: > 2244 username IP:50487 newdatabasetemp Sleep 1777 > 2247 username IP:50723 newdatabasetemp Sleep 1346 > 2249 username IP:50725

python process pool with timeout on each process not all of the pool

别说谁变了你拦得住时间么 提交于 2020-08-04 08:32:07
问题 I need to run many processes, but not all together, for example 4 processes at same time. multiprocessing.Pool is exactly what I need. But the problem is that I need to terminate a process if it lasts more than a timeout (e.g. 3 seconds). Pool just supports wait for a timeout for all processes not each of them. This is what I need: def f(): process_but_kill_if_it_takes_more_than_3_sec() pool.map(f, inputs) I couldn't find a simple way to use Pool with timeouts. There is a solution from Eli

python process pool with timeout on each process not all of the pool

不羁的心 提交于 2020-08-04 08:31:46
问题 I need to run many processes, but not all together, for example 4 processes at same time. multiprocessing.Pool is exactly what I need. But the problem is that I need to terminate a process if it lasts more than a timeout (e.g. 3 seconds). Pool just supports wait for a timeout for all processes not each of them. This is what I need: def f(): process_but_kill_if_it_takes_more_than_3_sec() pool.map(f, inputs) I couldn't find a simple way to use Pool with timeouts. There is a solution from Eli

Example mq_timedreceive

荒凉一梦 提交于 2020-07-22 03:49:28
问题 I can not find how to work properly with mq_timedreceive, can anyone give me an example? ssize_t mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio, const struct timespec *abs_timeout); I want timereceive to do not spent more than 20 seconds waiting. Thank you very much. 回答1: struct timespec tm; clock_gettime(CLOCK_REALTIME, &tm); tm.tv_sec += 20; // Set for 20 seconds if( 0 > mq_timedreceive( fd, buf, 4096, NULL, &tm ) ) { ... } Take a look at the full description