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 37namespace v8 { 38namespace internal { 39 40bool Snapshot::Deserialize(const byte* content, int len) { 41 SnapshotByteSource source(content, len); 42 Deserializer deserializer(&source); 43 return V8::Initialize(&deserializer); 44} 45 46 47bool 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 63Handle<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