diff options
Diffstat (limited to 'src/plugins/platforms')
| -rw-r--r-- | src/plugins/platforms/cocoa/qnsview.mm | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm index 66c3b6fad4..80c8bfc48b 100644 --- a/src/plugins/platforms/cocoa/qnsview.mm +++ b/src/plugins/platforms/cocoa/qnsview.mm @@ -381,6 +381,14 @@ static bool _q_dontOverrideCtrlLMB = false; m_backingStore = backingStore; m_backingStoreOffset = offset * m_backingStore->paintDevice()->devicePixelRatio(); + + // Prevent buildup of NSDisplayCycle objects during setNeedsDisplayInRect, which + // would normally be released as part of the root runloop's autorelease pool, but + // can be kept alive during repeated painting which starve the root runloop. + // FIXME: Move this to the event dispatcher, to cover more cases of starvation. + // FIXME: Figure out if there's a way to detect and/or prevent runloop starvation. + QMacAutoReleasePool pool; + for (const QRect &rect : region) [self setNeedsDisplayInRect:NSMakeRect(rect.x(), rect.y(), rect.width(), rect.height())]; } |