Bug 604026 - Sync event loops in workers should be created only if compatible with the worker shutdown status

1 files changed, 7 insertions, 4 deletions

diff --git a/dom/canvas/ImageBitmap.cpp b/dom/canvas/ImageBitmap.cpp
index 6588e0aa3..e45cdfc6f 100644
--- a/dom/canvas/ImageBitmap.cpp
+++ b/dom/canvas/ImageBitmap.cpp
@@ -950,7 +950,7 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, ImageData& aImageData,
                                                        imageSize,
                                                        aCropRect,
                                                        getter_AddRefs(data));
-    task->Dispatch(aRv);
+    task->Dispatch(Terminating, aRv);
   }
 
   if (NS_WARN_IF(!data)) {
@@ -1377,10 +1377,10 @@ private:
     RefPtr<DecodeBlobInMainThreadSyncTask> task =
       new DecodeBlobInMainThreadSyncTask(mWorkerPrivate, *mBlob, mCropRect,
                                          getter_AddRefs(data), sourceSize);
-    task->Dispatch(rv); // This is a synchronous call.
+    task->Dispatch(Terminating, rv); // This is a synchronous call.
 
+    // In case the worker is terminating, this rejection can be handled.
     if (NS_WARN_IF(rv.Failed())) {
-      // XXXbz does this really make sense if we're shutting down?  Ah, well.
       mPromise->MaybeReject(rv);
       return nullptr;
     }
@@ -2104,7 +2104,10 @@ ImageBitmap::Create(nsIGlobalObject* aGlobal,
                                                                  aFormat,
                                                                  aLayout,
                                                                  getter_AddRefs(data));
-    task->Dispatch(aRv);
+    task->Dispatch(Terminating, aRv);
+    if (aRv.Failed()) {
+      return promise.forget();
+    }
   }
 
   if (NS_WARN_IF(!data)) {