concurrency

来源： https://stackoverflow.com/questions/60119169/what-are-memory-fences-used-for-in-java

来源： https://stackoverflow.com/questions/63306875/combining-multithreading-and-multiprocessing-with-concurrent-futures

来源： https://stackoverflow.com/questions/61105410/dart-future-wait-for-multiple-futures-and-get-back-results-of-different-types

来源： https://stackoverflow.com/questions/61105410/dart-future-wait-for-multiple-futures-and-get-back-results-of-different-types

来源： https://stackoverflow.com/questions/61105410/dart-future-wait-for-multiple-futures-and-get-back-results-of-different-types

问题 Should we set the interrupted flag when catching an InterruptedException inside a task managed by an ExecutorService ? Or should we just swallow the InterruptedException ? Example: final ExecutorService service = ...; final Object object = ...; service.submit(() -> { try { while (!condition) { object.wait(); } } catch (final InterruptedException exception) { Thread.currentThread().interrupt(); // yes or no? } }); 回答1: In a task submitted to an ExecutorService , receiving an interrupt is a

问题 Should we set the interrupted flag when catching an InterruptedException inside a task managed by an ExecutorService ? Or should we just swallow the InterruptedException ? Example: final ExecutorService service = ...; final Object object = ...; service.submit(() -> { try { while (!condition) { object.wait(); } } catch (final InterruptedException exception) { Thread.currentThread().interrupt(); // yes or no? } }); 回答1: In a task submitted to an ExecutorService , receiving an interrupt is a

问题 Should we set the interrupted flag when catching an InterruptedException inside a task managed by an ExecutorService ? Or should we just swallow the InterruptedException ? Example: final ExecutorService service = ...; final Object object = ...; service.submit(() -> { try { while (!condition) { object.wait(); } } catch (final InterruptedException exception) { Thread.currentThread().interrupt(); // yes or no? } }); 回答1: In a task submitted to an ExecutorService , receiving an interrupt is a

问题 I was previously using the threading.Thread module. Now I'm using concurrent.futures -> ThreadPoolExecutor . Previously, I was using the following code to exit/kill/finish a thread: def terminate_thread(thread): """Terminates a python thread from another thread. :param thread: a threading.Thread instance """ if not thread.isAlive(): return exc = ctypes.py_object(SystemExit) res = ctypes.pythonapi.PyThreadState_SetAsyncExc( ctypes.c_long(thread.ident), exc) if res == 0: raise ValueError(

问题 Since connection creation takes up quite a few times, and I'd like to connect to multiple hosts, I started to use JSch from multiple threads. However I get some nasty exceptions, which I think is because of JSch being not thread-safe. How should I use it, that it not throws any exception, which is due to the not-thread-safety of JSch? Stacktrace: com.jcraft.jsch.JSchException: connection is closed by foreign host at com.jcraft.jsch.Session.connect(Session.java:269) at com.jcraft.jsch.Session