Re: What functions, other than sleep(), can be interrupted by Ctrl-C?
You can hook the it on the main thread and just pass it. And let the threads execute. On Thu, Feb 26, 2009 at 10:47 PM, Gabriel Genellina gagsl-...@yahoo.com.arwrote: En Thu, 26 Feb 2009 16:17:42 -0200, Maxim Khitrov mkhit...@gmail.com escribió: I'm looking for a function in the standard library or pywin32 package that will block until a certain condition is met or it is interrupted by Ctrl-C. For example, time.sleep() would have been perfect for my needs if thread.interrupt_main() could interrupt the call from another thread in the same way that Ctrl-C does. Unfortunately, that is not the case. Another thing I tried was creating a pipe with os.pipe() and issuing a read call on it. The event to exit was a single byte written to the other end of the pipe, but Ctrl-C could not interrupt the read call. The threading.Event class does not work for me, because it uses short sleep intervals for timed waits. I need the reaction to be as close to instant as possible, something like this will not do: while not some condition is met: sleep(0.01) I actually replaced threading.Event with my own version that uses native Windows events, and waits on those also cannot be interrupted by Ctrl-C. I'm trying to achieve the same effect as that while loop and I don't care what the condition to exit is, but the loop needs to exit as soon as the condition is met without waiting for up to X additional milliseconds. Any ideas? You may try MsgWaitForMultipleObjects - send a message to the main thread from the other thread. An alertable wait (like SleepEx) plus QueueUserAPC should work, I presume, but I've never actually tried in Python. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list -- http://www.astorandblack.com -- http://mail.python.org/mailman/listinfo/python-list
Re: What functions, other than sleep(), can be interrupted by Ctrl-C?
On Thu, Feb 26, 2009 at 3:47 PM, Gabriel Genellina gagsl-...@yahoo.com.ar wrote: I'm looking for a function in the standard library or pywin32 package that will block until a certain condition is met or it is interrupted by Ctrl-C. For example, time.sleep() would have been perfect for my needs if thread.interrupt_main() could interrupt the call from another thread in the same way that Ctrl-C does. Unfortunately, that is not the case. You may try MsgWaitForMultipleObjects - send a message to the main thread from the other thread. An alertable wait (like SleepEx) plus QueueUserAPC should work, I presume, but I've never actually tried in Python. I tried using MsgWaitForMultipleObjects, but even with a wake mask of 0x Ctrl-C still did not interrupt the call. Maybe it has to do with the way pywin32 implements it. QueueUserAPC is not available in pywin32, but I suppose I can try getting to it via ctypes. - Max -- http://mail.python.org/mailman/listinfo/python-list
What functions, other than sleep(), can be interrupted by Ctrl-C?
Greetings, I'm looking for a function in the standard library or pywin32 package that will block until a certain condition is met or it is interrupted by Ctrl-C. For example, time.sleep() would have been perfect for my needs if thread.interrupt_main() could interrupt the call from another thread in the same way that Ctrl-C does. Unfortunately, that is not the case. Another thing I tried was creating a pipe with os.pipe() and issuing a read call on it. The event to exit was a single byte written to the other end of the pipe, but Ctrl-C could not interrupt the read call. The threading.Event class does not work for me, because it uses short sleep intervals for timed waits. I need the reaction to be as close to instant as possible, something like this will not do: while not some condition is met: sleep(0.01) I actually replaced threading.Event with my own version that uses native Windows events, and waits on those also cannot be interrupted by Ctrl-C. I'm trying to achieve the same effect as that while loop and I don't care what the condition to exit is, but the loop needs to exit as soon as the condition is met without waiting for up to X additional milliseconds. Any ideas? - Max -- http://mail.python.org/mailman/listinfo/python-list
Re: What functions, other than sleep(), can be interrupted by Ctrl-C?
En Thu, 26 Feb 2009 16:17:42 -0200, Maxim Khitrov mkhit...@gmail.com escribió: I'm looking for a function in the standard library or pywin32 package that will block until a certain condition is met or it is interrupted by Ctrl-C. For example, time.sleep() would have been perfect for my needs if thread.interrupt_main() could interrupt the call from another thread in the same way that Ctrl-C does. Unfortunately, that is not the case. Another thing I tried was creating a pipe with os.pipe() and issuing a read call on it. The event to exit was a single byte written to the other end of the pipe, but Ctrl-C could not interrupt the read call. The threading.Event class does not work for me, because it uses short sleep intervals for timed waits. I need the reaction to be as close to instant as possible, something like this will not do: while not some condition is met: sleep(0.01) I actually replaced threading.Event with my own version that uses native Windows events, and waits on those also cannot be interrupted by Ctrl-C. I'm trying to achieve the same effect as that while loop and I don't care what the condition to exit is, but the loop needs to exit as soon as the condition is met without waiting for up to X additional milliseconds. Any ideas? You may try MsgWaitForMultipleObjects - send a message to the main thread from the other thread. An alertable wait (like SleepEx) plus QueueUserAPC should work, I presume, but I've never actually tried in Python. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
