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
Deserialize(const byte * content,int len)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
Initialize(const char * snapshot_file)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
NewContextFromSnapshot()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