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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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30 #include "v8.h" | 30 #include "v8.h" |
31 | 31 |
32 #include "api.h" | 32 #include "api.h" |
33 #include "serialize.h" | 33 #include "serialize.h" |
34 #include "snapshot.h" | 34 #include "snapshot.h" |
35 #include "platform.h" | 35 #include "platform.h" |
36 | 36 |
37 namespace v8 { | 37 namespace v8 { |
38 namespace internal { | 38 namespace internal { |
39 | 39 |
40 | 40 bool Snapshot::Deserialize(const byte* content, int len) { |
41 static void ReserveSpaceForSnapshot(Deserializer* deserializer, | 41 SnapshotByteSource source(content, len); |
42 const char* file_name) { | 42 Deserializer deserializer(&source); |
43 int file_name_length = StrLength(file_name) + 10; | 43 return V8::Initialize(&deserializer); |
44 Vector<char> name = Vector<char>::New(file_name_length + 1); | |
45 OS::SNPrintF(name, "%s.size", file_name); | |
46 FILE* fp = OS::FOpen(name.start(), "r"); | |
47 CHECK_NE(NULL, fp); | |
48 int new_size, pointer_size, data_size, code_size, map_size, cell_size; | |
49 #ifdef _MSC_VER | |
50 // Avoid warning about unsafe fscanf from MSVC. | |
51 // Please note that this is only fine if %c and %s are not being used. | |
52 #define fscanf fscanf_s | |
53 #endif | |
54 CHECK_EQ(1, fscanf(fp, "new %d\n", &new_size)); | |
55 CHECK_EQ(1, fscanf(fp, "pointer %d\n", &pointer_size)); | |
56 CHECK_EQ(1, fscanf(fp, "data %d\n", &data_size)); | |
57 CHECK_EQ(1, fscanf(fp, "code %d\n", &code_size)); | |
58 CHECK_EQ(1, fscanf(fp, "map %d\n", &map_size)); | |
59 CHECK_EQ(1, fscanf(fp, "cell %d\n", &cell_size)); | |
60 #ifdef _MSC_VER | |
61 #undef fscanf | |
62 #endif | |
63 fclose(fp); | |
64 deserializer->set_reservation(NEW_SPACE, new_size); | |
65 deserializer->set_reservation(OLD_POINTER_SPACE, pointer_size); | |
66 deserializer->set_reservation(OLD_DATA_SPACE, data_size); | |
67 deserializer->set_reservation(CODE_SPACE, code_size); | |
68 deserializer->set_reservation(MAP_SPACE, map_size); | |
69 deserializer->set_reservation(CELL_SPACE, cell_size); | |
70 name.Dispose(); | |
71 } | 44 } |
72 | 45 |
73 | 46 |
74 void Snapshot::ReserveSpaceForLinkedInSnapshot(Deserializer* deserializer) { | |
75 deserializer->set_reservation(NEW_SPACE, new_space_used_); | |
76 deserializer->set_reservation(OLD_POINTER_SPACE, pointer_space_used_); | |
77 deserializer->set_reservation(OLD_DATA_SPACE, data_space_used_); | |
78 deserializer->set_reservation(CODE_SPACE, code_space_used_); | |
79 deserializer->set_reservation(MAP_SPACE, map_space_used_); | |
80 deserializer->set_reservation(CELL_SPACE, cell_space_used_); | |
81 } | |
82 | |
83 | |
84 bool Snapshot::Initialize(const char* snapshot_file) { | 47 bool Snapshot::Initialize(const char* snapshot_file) { |
85 if (snapshot_file) { | 48 if (snapshot_file) { |
86 int len; | 49 int len; |
87 byte* str = ReadBytes(snapshot_file, &len); | 50 byte* str = ReadBytes(snapshot_file, &len); |
88 if (!str) return false; | 51 if (!str) return false; |
89 bool success; | 52 Deserialize(str, len); |
90 { | |
91 SnapshotByteSource source(str, len); | |
92 Deserializer deserializer(&source); | |
93 ReserveSpaceForSnapshot(&deserializer, snapshot_file); | |
94 success = V8::Initialize(&deserializer); | |
95 } | |
96 DeleteArray(str); | 53 DeleteArray(str); |
97 return success; | 54 return true; |
98 } else if (size_ > 0) { | 55 } else if (size_ > 0) { |
99 SnapshotByteSource source(raw_data_, raw_size_); | 56 Deserialize(raw_data_, raw_size_); |
100 Deserializer deserializer(&source); | 57 return true; |
101 ReserveSpaceForLinkedInSnapshot(&deserializer); | |
102 return V8::Initialize(&deserializer); | |
103 } | 58 } |
104 return false; | 59 return false; |
105 } | 60 } |
106 | 61 |
107 | 62 |
108 bool Snapshot::HaveASnapshotToStartFrom() { | 63 bool Snapshot::HaveASnapshotToStartFrom() { |
109 return size_ != 0; | 64 return size_ != 0; |
110 } | 65 } |
111 | 66 |
112 | 67 |
113 Handle<Context> Snapshot::NewContextFromSnapshot() { | 68 Handle<Context> Snapshot::NewContextFromSnapshot() { |
114 if (context_size_ == 0) { | 69 if (context_size_ == 0) { |
115 return Handle<Context>(); | 70 return Handle<Context>(); |
116 } | 71 } |
| 72 HEAP->ReserveSpace(new_space_used_, |
| 73 pointer_space_used_, |
| 74 data_space_used_, |
| 75 code_space_used_, |
| 76 map_space_used_, |
| 77 cell_space_used_, |
| 78 large_space_used_); |
117 SnapshotByteSource source(context_raw_data_, | 79 SnapshotByteSource source(context_raw_data_, |
118 context_raw_size_); | 80 context_raw_size_); |
119 Deserializer deserializer(&source); | 81 Deserializer deserializer(&source); |
120 Object* root; | 82 Object* root; |
121 deserializer.set_reservation(NEW_SPACE, context_new_space_used_); | |
122 deserializer.set_reservation(OLD_POINTER_SPACE, context_pointer_space_used_); | |
123 deserializer.set_reservation(OLD_DATA_SPACE, context_data_space_used_); | |
124 deserializer.set_reservation(CODE_SPACE, context_code_space_used_); | |
125 deserializer.set_reservation(MAP_SPACE, context_map_space_used_); | |
126 deserializer.set_reservation(CELL_SPACE, context_cell_space_used_); | |
127 deserializer.DeserializePartial(&root); | 83 deserializer.DeserializePartial(&root); |
128 CHECK(root->IsContext()); | 84 CHECK(root->IsContext()); |
129 return Handle<Context>(Context::cast(root)); | 85 return Handle<Context>(Context::cast(root)); |
130 } | 86 } |
131 | 87 |
132 } } // namespace v8::internal | 88 } } // namespace v8::internal |
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