1 files changed, 38 insertions, 0 deletions
diff --git a/dom/locks/LockRequestParent.cpp b/dom/locks/LockRequestParent.cpp
new file mode 100644
index 0000000000..60afa0679a
--- /dev/null
+++ b/dom/locks/LockRequestParent.cpp
@@ -0,0 +1,38 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "LockManagerParent.h"
+#include "LockRequestParent.h"
+
+#include "mozilla/dom/Promise.h"
+
+namespace mozilla::dom::locks {
+
+mozilla::ipc::IPCResult LockRequestParent::Recv__delete__(bool aAborted) {
+  RefPtr<LockManagerParent> manager =
+      static_cast<LockManagerParent*>(Manager());
+  ManagedLocks& managed = manager->Locks();
+
+  DebugOnly<bool> unheld = managed.mHeldLocks.RemoveElement(this);
+  MOZ_ASSERT_IF(!aAborted, unheld);
+
+  if (auto queue = managed.mQueueMap.Lookup(mRequest.name())) {
+    if (aAborted) {
+      DebugOnly<bool> dequeued = queue.Data().RemoveElement(this);
+      MOZ_ASSERT_IF(!unheld, dequeued);
+    }
+    manager->ProcessRequestQueue(queue.Data());
+    if (queue.Data().IsEmpty()) {
+      // Remove if empty, to prevent the queue map from growing forever
+      queue.Remove();
+    }
+  }
+  // or else, the queue is removed during the previous lock release (since
+  // multiple held locks are possible with `shared: true`)
+  return IPC_OK();
+}
+
+}  // namespace mozilla::dom::locks