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authorBernd Weimer <bweimer@rim.com>2012-11-22 09:50:59 (GMT)
committerThe Qt Project <gerrit-noreply@qt-project.org>2012-11-28 12:29:35 (GMT)
commit3f9a2ce751c10acbea505bb18a60cb4cb0fbcef9 (patch)
treebffce27df81c977ee4215a3c42d4ed4d4bf055cc /src/corelib/kernel
parent5b01e3d9b0295e962a329e02e8ccd9a2e94a45e3 (diff)
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BlackBerry: Restore proper BPS channel in event dispatcher
This change ensures that BPS events are delivered to the proper channel even if the application code would change the channel. Backport from qtbase: 131b86347384a97a7044942acd723c4ef5669636 Change-Id: Ib2bdd3d973bc51f5ce85eb6ef9adcb3e57093a54 Reviewed-by: Fabian Bumberger <fbumberger@rim.com> Reviewed-by: Kevin Krammer <kevin.krammer@kdab.com> Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Diffstat (limited to 'src/corelib/kernel')
-rw-r--r--src/corelib/kernel/qeventdispatcher_blackberry.cpp44
1 files changed, 36 insertions, 8 deletions
diff --git a/src/corelib/kernel/qeventdispatcher_blackberry.cpp b/src/corelib/kernel/qeventdispatcher_blackberry.cpp
index 784e971..0a8b0a6 100644
--- a/src/corelib/kernel/qeventdispatcher_blackberry.cpp
+++ b/src/corelib/kernel/qeventdispatcher_blackberry.cpp
@@ -55,7 +55,29 @@
#define qEventDispatcherDebug QT_NO_QDEBUG_MACRO()
#endif
-struct bpsIOHandlerData {
+class BpsChannelScopeSwitcher
+{
+public:
+ BpsChannelScopeSwitcher(int scopeChannel) : innerChannel(scopeChannel)
+ {
+ outerChannel = bps_channel_get_active();
+ if (outerChannel != innerChannel)
+ bps_channel_set_active(innerChannel);
+ }
+
+ ~BpsChannelScopeSwitcher()
+ {
+ if (outerChannel != innerChannel)
+ bps_channel_set_active(outerChannel);
+ }
+
+private:
+ int innerChannel;
+ int outerChannel;
+};
+
+struct bpsIOHandlerData
+{
bpsIOHandlerData()
: count(0), readfds(0), writefds(0), exceptfds(0)
{
@@ -101,7 +123,7 @@ static int bpsIOHandler(int fd, int io_events, void *data)
// but this only needs to happen once if multiple files become ready at the same time
if (firstReady) {
qEventDispatcherDebug << "Sending bpsIOReadyDomain event";
- // create IO ready event
+ // create unblock event
bps_event_t *event;
int result = bps_event_create(&event, bpsUnblockDomain, 0, NULL, NULL);
if (result != BPS_SUCCESS) {
@@ -109,7 +131,8 @@ static int bpsIOHandler(int fd, int io_events, void *data)
return BPS_FAILURE;
}
- // post unblock event to our thread
+ // post unblock event to our thread; in this callback the bps channel is
+ // guarenteed to be the same that was active when bps_add_fd was called
result = bps_push_event(event);
if (result != BPS_SUCCESS) {
qWarning("QEventDispatcherBlackberryPrivate::QEventDispatcherBlackberry: bps_push_event() failed");
@@ -175,6 +198,9 @@ QEventDispatcherBlackberry::~QEventDispatcherBlackberry()
void QEventDispatcherBlackberry::registerSocketNotifier(QSocketNotifier *notifier)
{
Q_ASSERT(notifier);
+ Q_D(QEventDispatcherBlackberry);
+
+ BpsChannelScopeSwitcher channelSwitcher(d->bps_channel);
// Register the fd with bps
int sockfd = notifier->socket();
@@ -205,8 +231,6 @@ void QEventDispatcherBlackberry::registerSocketNotifier(QSocketNotifier *notifie
break;
}
- Q_D(QEventDispatcherBlackberry);
-
errno = 0;
int result = bps_add_fd(sockfd, io_events, &bpsIOHandler, d->ioData.data());
@@ -216,6 +240,10 @@ void QEventDispatcherBlackberry::registerSocketNotifier(QSocketNotifier *notifie
void QEventDispatcherBlackberry::unregisterSocketNotifier(QSocketNotifier *notifier)
{
+ Q_D(QEventDispatcherBlackberry);
+
+ BpsChannelScopeSwitcher channelSwitcher(d->bps_channel);
+
// Allow the base Unix implementation to unregister the fd too
QEventDispatcherUNIX::unregisterSocketNotifier(notifier);
@@ -236,8 +264,6 @@ void QEventDispatcherBlackberry::unregisterSocketNotifier(QSocketNotifier *notif
if (!io_events)
return;
- Q_D(QEventDispatcherBlackberry);
-
errno = 0;
result = bps_add_fd(sockfd, io_events, &bpsIOHandler, d->ioData.data());
if (result != BPS_SUCCESS) {
@@ -249,12 +275,14 @@ int QEventDispatcherBlackberry::select(int nfds, fd_set *readfds, fd_set *writef
timeval *timeout)
{
Q_UNUSED(nfds);
+ Q_D(QEventDispatcherBlackberry);
+
+ BpsChannelScopeSwitcher channelSwitcher(d->bps_channel);
// Make a note of the start time
timeval startTime = qt_gettime();
// prepare file sets for bps callback
- Q_D(QEventDispatcherBlackberry);
d->ioData->count = 0;
d->ioData->readfds = readfds;
d->ioData->writefds = writefds;