On Fri, 26 Feb 2010 14:14:51 +0100, Denis RIVIERE <denis.rivi...@cea.fr> wrote: > Le vendredi 26 février 2010, Phil Thompson a écrit : >> On Fri, 26 Feb 2010 12:08:58 +0000, Phil Thompson >> >> <p...@riverbankcomputing.com> wrote: >> > >> > Unless you can provide me with a test case you'll have to experiment... >> > >> > Try adding... >> > >> > pthread_atfork(NULL, NULL, PyOS_AfterFork); >> > >> > ...after the call to PyEval_InitThreads() in siplib.c. >> >> An alternative (which I may be more comfortable with) is to add the >> /HoldGIL/ annotation to all QProcess.start() overloads. However the >> asynchronous nature of process starts may mean it has no effect. >> >> Phil > > I will try the pthread_atfork() thing, which seems to me to be safer. While > I > recompile sip and PyQt (I was using the linux distribution compiled > version), > here is a test case, which holds after a while: > > > #!/usr/bin/env python > > import threading > from PyQt4 import QtCore > > def theotherthread(): > print 'theotherthread' > while True: > a = 'turlute' > > def processExited(): > print 'processExited' > > def readStdout(): > global qprocess > print qprocess.readAllStandardOutput() > > def readStderr(): > global qprocess > print qprocess.readAllStandardError() > > thread1 = threading.Thread( target=theotherthread ) > thread1.start() > while True: > qprocess = QtCore.QProcess() > qprocess.connect( qprocess, > QtCore.SIGNAL( 'finished( int, > QProcess::ExitStatus )' ), > processExited ) > qprocess.connect( qprocess, QtCore.SIGNAL( 'readyReadStandardOutput()' > ), > readStdout ) > qprocess.connect( qprocess, QtCore.SIGNAL( 'readyReadStandardError()' > ), > readStderr ) > qprocess.start( 'echo', [ 'totototototototo' ] ) > qprocess.waitForFinished(-1)
The pthread_atfork() didn't work for me. The /HoldGIL/ annotation did. Phil _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
