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Fixed deadlock in layer

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Michael Jumper
2011-02-15 18:46:02 -08:00
parent fabeca7414
commit 25fd42afea
1 changed files with 12 additions and 4 deletions
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14
guacamole-common-js/src/main/resources/layer.js
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@@ -151,13 +151,21 @@ function Layer(width, height) {
display.copyRect = function(srcLayer, srcx, srcy, w, h, x, y) {
var updateId = currentUpdate++;
// Synchronize copy operation with source layer
srcLayer.sync(function() {
function scheduleCopyRect() {
setUpdate(updateId, function() {
if (autosize != 0) fitRect(x, y, w, h);
displayContext.drawImage(srcLayer, srcx, srcy, w, h, x, y, w, h);
});
});
}
// If we ARE the source layer, no need to sync.
// Syncing would result in deadlock.
if (display === srcLayer)
scheduleCopyRect();
// Otherwise synchronize copy operation with source layer
else
srcLayer.sync(scheduleCopyRect);
};