1 files changed, 107 insertions, 0 deletions
diff --git a/Source/WebInspectorUI/UserInterface/Proxies/HeapSnapshotDiffProxy.js b/Source/WebInspectorUI/UserInterface/Proxies/HeapSnapshotDiffProxy.js
new file mode 100644
index 000000000..4dc62ed61
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Proxies/HeapSnapshotDiffProxy.js
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+WebInspector.HeapSnapshotDiffProxy = class HeapSnapshotDiffProxy extends WebInspector.Object
+{
+    constructor(snapshotDiffObjectId, snapshot1, snapshot2, totalSize, totalObjectCount, categories)
+    {
+        super();
+
+        this._proxyObjectId = snapshotDiffObjectId;
+
+        console.assert(snapshot1 instanceof WebInspector.HeapSnapshotProxy);
+        console.assert(snapshot2 instanceof WebInspector.HeapSnapshotProxy);
+
+        this._snapshot1 = snapshot1;
+        this._snapshot2 = snapshot2;
+        this._totalSize = totalSize;
+        this._totalObjectCount = totalObjectCount;
+        this._categories = Map.fromObject(categories);
+    }
+
+    // Static
+
+    static deserialize(objectId, serializedSnapshotDiff)
+    {
+        let {snapshot1: serializedSnapshot1, snapshot2: serializedSnapshot2, totalSize, totalObjectCount, categories} = serializedSnapshotDiff;
+        // FIXME: The objectId for these snapshots is the snapshotDiff's objectId. Currently these
+        // snapshots are only used for static data so the proxing doesn't matter. However,
+        // should we serialize the objectId with the snapshot so we have the right objectId?
+        let snapshot1 = WebInspector.HeapSnapshotProxy.deserialize(objectId, serializedSnapshot1);
+        let snapshot2 = WebInspector.HeapSnapshotProxy.deserialize(objectId, serializedSnapshot2);
+        return new WebInspector.HeapSnapshotDiffProxy(objectId, snapshot1, snapshot2, totalSize, totalObjectCount, categories);
+    }
+
+    // Public
+
+    get snapshot1() { return this._snapshot1; }
+    get snapshot2() { return this._snapshot2; }
+    get totalSize() { return this._totalSize; }
+    get totalObjectCount() { return this._totalObjectCount; }
+    get categories() { return this._categories; }
+    get invalid() { return this._snapshot1.invalid || this._snapshot2.invalid; }
+
+    updateForCollectionEvent(event)
+    {
+        console.assert(!this.invalid);
+        if (!event.data.affectedSnapshots.includes(this._snapshot2._identifier))
+            return;
+
+        this.update(() => {
+            this.dispatchEventToListeners(WebInspector.HeapSnapshotProxy.Event.CollectedNodes, event.data);
+        });
+    }
+
+    allocationBucketCounts(bucketSizes, callback)
+    {
+        console.assert(!this.invalid);
+        WebInspector.HeapSnapshotWorkerProxy.singleton().callMethod(this._proxyObjectId, "allocationBucketCounts", bucketSizes, callback);
+    }
+
+    instancesWithClassName(className, callback)
+    {
+        console.assert(!this.invalid);
+        WebInspector.HeapSnapshotWorkerProxy.singleton().callMethod(this._proxyObjectId, "instancesWithClassName", className, (serializedNodes) => {
+            callback(serializedNodes.map(WebInspector.HeapSnapshotNodeProxy.deserialize.bind(null, this._proxyObjectId)));
+        });
+    }
+
+    update(callback)
+    {
+        console.assert(!this.invalid);
+        WebInspector.HeapSnapshotWorkerProxy.singleton().callMethod(this._proxyObjectId, "update", ({liveSize, categories}) => {
+            this._categories = Map.fromObject(categories);
+            callback();
+        });
+    }
+
+    nodeWithIdentifier(nodeIdentifier, callback)
+    {
+        console.assert(!this.invalid);
+        WebInspector.HeapSnapshotWorkerProxy.singleton().callMethod(this._proxyObjectId, "nodeWithIdentifier", nodeIdentifier, (serializedNode) => {
+            callback(WebInspector.HeapSnapshotNodeProxy.deserialize(this._proxyObjectId, serializedNode));
+        });
+    }
+};