1 // Copyright 2006-2008 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 // The common functionality when building with or without snapshots. 29 30 #include "v8.h" 31 32 #include "api.h" 33 #include "serialize.h" 34 #include "snapshot.h" 35 #include "platform.h" 36 37 namespace v8 { 38 namespace internal { 39 40 bool Snapshot::Deserialize(const byte* content, int len) { 41 SnapshotByteSource source(content, len); 42 Deserializer deserializer(&source); 43 return V8::Initialize(&deserializer); 44 } 45 46 47 bool Snapshot::Initialize(const char* snapshot_file) { 48 if (snapshot_file) { 49 int len; 50 byte* str = ReadBytes(snapshot_file, &len); 51 if (!str) return false; 52 Deserialize(str, len); 53 DeleteArray(str); 54 return true; 55 } else if (size_ > 0) { 56 Deserialize(data_, size_); 57 return true; 58 } 59 return false; 60 } 61 62 63 Handle<Context> Snapshot::NewContextFromSnapshot() { 64 if (context_size_ == 0) { 65 return Handle<Context>(); 66 } 67 HEAP->ReserveSpace(new_space_used_, 68 pointer_space_used_, 69 data_space_used_, 70 code_space_used_, 71 map_space_used_, 72 cell_space_used_, 73 large_space_used_); 74 SnapshotByteSource source(context_data_, context_size_); 75 Deserializer deserializer(&source); 76 Object* root; 77 deserializer.DeserializePartial(&root); 78 CHECK(root->IsContext()); 79 return Handle<Context>(Context::cast(root)); 80 } 81 82 } } // namespace v8::internal 83
