1 // Copyright 2013 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_SNAPSHOT_GENERATOR_INL_H_ 29 #define V8_HEAP_SNAPSHOT_GENERATOR_INL_H_ 30 31 #include "heap-snapshot-generator.h" 32 33 namespace v8 { 34 namespace internal { 35 36 37 HeapEntry* HeapGraphEdge::from() const { 38 return &snapshot()->entries()[from_index_]; 39 } 40 41 42 HeapSnapshot* HeapGraphEdge::snapshot() const { 43 return to_entry_->snapshot(); 44 } 45 46 47 int HeapEntry::index() const { 48 return static_cast<int>(this - &snapshot_->entries().first()); 49 } 50 51 52 int HeapEntry::set_children_index(int index) { 53 children_index_ = index; 54 int next_index = index + children_count_; 55 children_count_ = 0; 56 return next_index; 57 } 58 59 60 HeapGraphEdge** HeapEntry::children_arr() { 61 ASSERT(children_index_ >= 0); 62 return &snapshot_->children()[children_index_]; 63 } 64 65 66 SnapshotObjectId HeapObjectsMap::GetNthGcSubrootId(int delta) { 67 return kGcRootsFirstSubrootId + delta * kObjectIdStep; 68 } 69 70 71 HeapObject* V8HeapExplorer::GetNthGcSubrootObject(int delta) { 72 return reinterpret_cast<HeapObject*>( 73 reinterpret_cast<char*>(kFirstGcSubrootObject) + 74 delta * HeapObjectsMap::kObjectIdStep); 75 } 76 77 78 int V8HeapExplorer::GetGcSubrootOrder(HeapObject* subroot) { 79 return static_cast<int>( 80 (reinterpret_cast<char*>(subroot) - 81 reinterpret_cast<char*>(kFirstGcSubrootObject)) / 82 HeapObjectsMap::kObjectIdStep); 83 } 84 85 } } // namespace v8::internal 86 87 #endif // V8_HEAP_SNAPSHOT_GENERATOR_INL_H_ 88 89
