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Corrects potential machine shutdown race condition.

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This commit is contained in:
Thomas Harte 2019-03-02 23:17:31 -05:00
parent 113efd9b16
commit 05d483bc5b
1 changed files with 15 additions and 15 deletions
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30
OSBindings/Mac/Clock Signal/Documents/MachineDocument.swift
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@ -199,23 +199,23 @@ class MachineDocument:
// MARK: CSOpenGLViewDelegate
final func openGLViewRedraw(_ view: CSOpenGLView, event redrawEvent: CSOpenGLViewRedrawEvent) {
if let machine = self.machine {
switch redrawEvent {
case .timer:
bestEffortLock.lock()
if let bestEffortUpdater = bestEffortUpdater {
bestEffortLock.unlock()
bestEffortUpdater.update()
} else {
bestEffortLock.unlock()
}
machine.updateView(forPixelSize: view.backingSize)
fallthrough
case .appKit:
machine.drawView(forPixelSize: view.backingSize)
if redrawEvent == .timer {
bestEffortLock.lock()
if let bestEffortUpdater = bestEffortUpdater {
bestEffortLock.unlock()
bestEffortUpdater.update()
} else {
bestEffortLock.unlock()
}
}
if drawLock.try() {
if redrawEvent == .timer {
machine.updateView(forPixelSize: view.backingSize)
}
machine.drawView(forPixelSize: view.backingSize)
drawLock.unlock()
}
}
// MARK: Runtime media insertion.