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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef InspectorHeapProfilerAgent_h
     32 #define InspectorHeapProfilerAgent_h
     33 
     34 #include "core/InspectorFrontend.h"
     35 #include "core/inspector/InspectorBaseAgent.h"
     36 #include "wtf/Forward.h"
     37 #include "wtf/HashMap.h"
     38 #include "wtf/Noncopyable.h"
     39 #include "wtf/OwnPtr.h"
     40 #include "wtf/PassOwnPtr.h"
     41 #include "wtf/text/WTFString.h"
     42 
     43 namespace blink {
     44 
     45 class InjectedScriptManager;
     46 class HeapStatsUpdateTask;
     47 class ScriptHeapSnapshot;
     48 
     49 typedef String ErrorString;
     50 
     51 class InspectorHeapProfilerAgent FINAL : public InspectorBaseAgent<InspectorHeapProfilerAgent>, public InspectorBackendDispatcher::HeapProfilerCommandHandler {
     52     WTF_MAKE_NONCOPYABLE(InspectorHeapProfilerAgent);
     53     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     54 public:
     55     static PassOwnPtrWillBeRawPtr<InspectorHeapProfilerAgent> create(InjectedScriptManager*);
     56     virtual ~InspectorHeapProfilerAgent();
     57     virtual void trace(Visitor*) OVERRIDE;
     58 
     59     virtual void collectGarbage(ErrorString*) OVERRIDE;
     60 
     61     virtual void enable(ErrorString*) OVERRIDE;
     62     virtual void disable(ErrorString*) OVERRIDE;
     63     virtual void startTrackingHeapObjects(ErrorString*, const bool* trackAllocations) OVERRIDE;
     64     virtual void stopTrackingHeapObjects(ErrorString*, const bool* reportProgress) OVERRIDE;
     65 
     66     virtual void setFrontend(InspectorFrontend*) OVERRIDE;
     67     virtual void clearFrontend() OVERRIDE;
     68     virtual void restore() OVERRIDE;
     69 
     70     virtual void takeHeapSnapshot(ErrorString*, const bool* reportProgress) OVERRIDE;
     71 
     72     virtual void getObjectByHeapObjectId(ErrorString*, const String& heapSnapshotObjectId, const String* objectGroup, RefPtr<TypeBuilder::Runtime::RemoteObject>& result) OVERRIDE;
     73     virtual void getHeapObjectId(ErrorString*, const String& objectId, String* heapSnapshotObjectId) OVERRIDE;
     74 
     75 private:
     76     class HeapStatsStream;
     77     class HeapStatsUpdateTask;
     78 
     79     explicit InspectorHeapProfilerAgent(InjectedScriptManager*);
     80 
     81     void requestHeapStatsUpdate();
     82     void pushHeapStatsUpdate(const uint32_t* const data, const int size);
     83 
     84     void startTrackingHeapObjectsInternal(bool trackAllocations);
     85     void stopTrackingHeapObjectsInternal();
     86 
     87     RawPtrWillBeMember<InjectedScriptManager> m_injectedScriptManager;
     88     InspectorFrontend::HeapProfiler* m_frontend;
     89     unsigned m_nextUserInitiatedHeapSnapshotNumber;
     90     OwnPtrWillBeMember<HeapStatsUpdateTask> m_heapStatsUpdateTask;
     91 };
     92 
     93 } // namespace blink
     94 
     95 
     96 #endif // !defined(InspectorHeapProfilerAgent_h)
     97