1 // Copyright 2009-2010 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #ifndef V8_HEAP_PROFILER_H_ 29 #define V8_HEAP_PROFILER_H_ 30 31 #include "isolate.h" 32 33 namespace v8 { 34 namespace internal { 35 36 class HeapSnapshot; 37 class HeapSnapshotsCollection; 38 39 #define HEAP_PROFILE(heap, call) \ 40 do { \ 41 v8::internal::HeapProfiler* profiler = heap->isolate()->heap_profiler(); \ 42 if (profiler != NULL && profiler->is_profiling()) { \ 43 profiler->call; \ 44 } \ 45 } while (false) 46 47 // The HeapProfiler writes data to the log files, which can be postprocessed 48 // to generate .hp files for use by the GHC/Valgrind tool hp2ps. 49 class HeapProfiler { 50 public: 51 static void SetUp(); 52 static void TearDown(); 53 54 static HeapSnapshot* TakeSnapshot(const char* name, 55 int type, 56 v8::ActivityControl* control); 57 static HeapSnapshot* TakeSnapshot(String* name, 58 int type, 59 v8::ActivityControl* control); 60 static int GetSnapshotsCount(); 61 static HeapSnapshot* GetSnapshot(int index); 62 static HeapSnapshot* FindSnapshot(unsigned uid); 63 static void DeleteAllSnapshots(); 64 65 void ObjectMoveEvent(Address from, Address to); 66 67 void DefineWrapperClass( 68 uint16_t class_id, v8::HeapProfiler::WrapperInfoCallback callback); 69 70 v8::RetainedObjectInfo* ExecuteWrapperClassCallback(uint16_t class_id, 71 Object** wrapper); INLINE(bool is_profiling ())72 INLINE(bool is_profiling()) { 73 return snapshots_->is_tracking_objects(); 74 } 75 76 private: 77 HeapProfiler(); 78 ~HeapProfiler(); 79 HeapSnapshot* TakeSnapshotImpl(const char* name, 80 int type, 81 v8::ActivityControl* control); 82 HeapSnapshot* TakeSnapshotImpl(String* name, 83 int type, 84 v8::ActivityControl* control); 85 void ResetSnapshots(); 86 87 HeapSnapshotsCollection* snapshots_; 88 unsigned next_snapshot_uid_; 89 List<v8::HeapProfiler::WrapperInfoCallback> wrapper_callbacks_; 90 }; 91 92 } } // namespace v8::internal 93 94 #endif // V8_HEAP_PROFILER_H_ 95