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      1 /*
      2  * Copyright (c) 2010, 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 ScriptProfiler_h
     32 #define ScriptProfiler_h
     33 
     34 #include "bindings/core/v8/ScriptHeapSnapshot.h"
     35 #include "core/inspector/ScriptProfile.h"
     36 
     37 #include "wtf/Forward.h"
     38 #include "wtf/PassRefPtr.h"
     39 #include "wtf/text/WTFString.h"
     40 
     41 namespace blink {
     42 
     43 class ExternalStringVisitor;
     44 class WrappedNodeVisitor;
     45 class Page;
     46 class ScriptValue;
     47 class WorkerGlobalScope;
     48 
     49 class ScriptProfiler {
     50     WTF_MAKE_NONCOPYABLE(ScriptProfiler);
     51 public:
     52     class HeapSnapshotProgress {
     53     public:
     54         virtual ~HeapSnapshotProgress() { }
     55         virtual void Start(int totalWork) = 0;
     56         virtual void Worked(int workDone) = 0;
     57         virtual void Done() = 0;
     58         virtual bool isCanceled() = 0;
     59     };
     60 
     61     class OutputStream {
     62     public:
     63         virtual ~OutputStream() { }
     64         virtual void write(const uint32_t* chunk, const int size) = 0;
     65     };
     66 
     67     static void collectGarbage();
     68     static ScriptValue objectByHeapObjectId(unsigned id);
     69     static unsigned getHeapObjectId(const ScriptValue&);
     70     static void clearHeapObjectIds();
     71     static void setSamplingInterval(int intervalUs);
     72     static void start(const String& title);
     73     static PassRefPtrWillBeRawPtr<ScriptProfile> stop(const String& title);
     74     static PassRefPtr<ScriptHeapSnapshot> takeHeapSnapshot(const String& title, HeapSnapshotProgress*);
     75     static void startTrackingHeapObjects(bool trackAllocations);
     76     static void stopTrackingHeapObjects();
     77     static unsigned requestHeapStatsUpdate(OutputStream*);
     78     static void initialize();
     79     static void visitNodeWrappers(WrappedNodeVisitor*);
     80     static HashMap<String, double>* currentProfileNameIdleTimeMap();
     81     static void setIdle(bool isIdle);
     82 };
     83 
     84 } // namespace blink
     85 
     86 #endif // ScriptProfiler_h
     87