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Resolved deadlock if an invalidate call was sent to the Electron while it was in the middle of an update.

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This commit is contained in:
Thomas Harte 2016-02-16 20:35:45 -05:00
parent a01f90ff3e
commit bbffbb5dc2
1 changed files with 8 additions and 5 deletions
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11
OSBindings/Mac/Clock Signal/Documents/ElectronDocument.swift
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@ -55,21 +55,24 @@ class ElectronDocument: MachineDocument {
electron.setROM(data, slot: 15) electron.setROM(data, slot: 15)
} }
lazy var actionLock = NSLock()
override func close() { override func close() {
objc_sync_enter(self) actionLock.lock()
electron.sync() electron.sync()
openGLView.invalidate() openGLView.invalidate()
openGLView.openGLContext!.makeCurrentContext() openGLView.openGLContext!.makeCurrentContext()
electron = nil electron = nil
actionLock.unlock()
super.close() super.close()
objc_sync_exit(self)
} }
// MARK: CSOpenGLViewDelegate // MARK: CSOpenGLViewDelegate
override func runForNumberOfCycles(numberOfCycles: Int32) { override func runForNumberOfCycles(numberOfCycles: Int32) {
objc_sync_enter(self) if actionLock.tryLock() {
electron?.runForNumberOfCycles(numberOfCycles) electron?.runForNumberOfCycles(numberOfCycles)
objc_sync_exit(self) actionLock.unlock()
}
} }
override func openGLView(view: CSCathodeRayView, drawViewOnlyIfDirty onlyIfDirty: Bool) { override func openGLView(view: CSCathodeRayView, drawViewOnlyIfDirty onlyIfDirty: Bool) {