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| author | Ritt Konstantin <qnx@ics.com> | 2011-06-21 11:51:04 (GMT) |
|---|---|---|
| committer | Harald Fernengel <harald.fernengel@nokia.com> | 2011-06-21 12:05:38 (GMT) |
| commit | 648bf773b1aa759a40d8609039c44f9dce31da61 (patch) | |
| tree | 6d0e09b8f1a9012504d000a95eb1fc4dc69055fb | |
| parent | f60789de3be437ce0fbe16430467adfd6fe66cc7 (diff) | |
| download | Qt-648bf773b1aa759a40d8609039c44f9dce31da61.zip Qt-648bf773b1aa759a40d8609039c44f9dce31da61.tar.gz Qt-648bf773b1aa759a40d8609039c44f9dce31da61.tar.bz2 | |
use RoundRobin scheduler by default on QNX
otherwise drawn intensive apps will hog the cpu
and make the system appear frozen
Merge-request: 1259
Reviewed-by: Harald Fernengel <harald.fernengel@nokia.com>
| -rw-r--r-- | src/corelib/kernel/qcoreapplication.cpp | 16 | ||||
| -rw-r--r-- | src/corelib/thread/qthread_unix.cpp | 5 |
2 files changed, 21 insertions, 0 deletions
diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp index 7694a0f..c818ffc 100644 --- a/src/corelib/kernel/qcoreapplication.cpp +++ b/src/corelib/kernel/qcoreapplication.cpp @@ -98,6 +98,11 @@ # include <taskLib.h> #endif +#ifdef Q_OS_QNX +# include <pthread.h> +# include <sched.h> +#endif + QT_BEGIN_NAMESPACE class QMutexUnlocker @@ -353,6 +358,17 @@ QCoreApplicationPrivate::QCoreApplicationPrivate(int &aargc, char **aargv, uint qt_application_thread_id = QThread::currentThreadId(); #endif +#ifdef Q_OS_QNX + // without Round Robin drawn intensive apps will hog the cpu + // and make the system appear frozen + int sched_policy; + sched_param param; + if (pthread_getschedparam(0, &sched_policy, ¶m) == 0 && sched_policy != SCHED_RR) { + sched_policy = SCHED_RR; + pthread_setschedparam(0, sched_policy, ¶m); + } +#endif + // note: this call to QThread::currentThread() may end up setting theMainThread! if (QThread::currentThread() != theMainThread) qWarning("WARNING: QApplication was not created in the main() thread."); diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp index 839a396..765969e 100644 --- a/src/corelib/thread/qthread_unix.cpp +++ b/src/corelib/thread/qthread_unix.cpp @@ -479,6 +479,11 @@ void QThread::usleep(unsigned long usecs) // sched_priority is OUT only static bool calculateUnixPriority(int priority, int *sched_policy, int *sched_priority) { +#ifdef Q_OS_QNX + // without Round Robin drawn intensive apps will hog the cpu + // and make the system appear frozen + *sched_policy = SCHED_RR; +#endif #ifdef SCHED_IDLE if (priority == QThread::IdlePriority) { *sched_policy = SCHED_IDLE; |