Changeset 643 for trunk/src

Timestamp:

Mar 7, 2010, 6:22:35 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

corelib: Protect against the frozen system when QSocketNotifier is given an unsupported socket (for example, an OS/2 file handle). There is still 100% CPU load in this case, but the application can be at least closed using normal means.

File:

• trunk/src/corelib/kernel/qeventdispatcher_pm.cpp (modified) (1 diff)

trunk/src/corelib/kernel/qeventdispatcher_pm.cpp

@@ -786 +786 @@
             mutex.unlock();
             nsel = ::select(maxSockfd + 1, &tmpRead, &tmpWrite, &tmpEx, timeout);
+            if (nsel == -1 && errno == EINVAL) {
+                qWarning("QSocketNotifier: select() returned EINVAL, check that "
+                         "the socket is not an OS/2 file handle.");
+                // give it some sleep to let other threads do something
+                DosSleep(0);
+            }
             mutex.lock();
             if (nsel > 0) {