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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // Used for building with external snapshots. | |
6 | |
7 #include "src/snapshot.h" | |
8 | |
9 #include "src/base/platform/mutex.h" | |
10 #include "src/serialize.h" | |
11 #include "src/snapshot-source-sink.h" | |
12 #include "src/v8.h" // for V8::Initialize | |
13 | |
14 | |
15 #ifndef V8_USE_EXTERNAL_STARTUP_DATA | |
16 #error snapshot-external.cc is used only for the external snapshot build. | |
17 #endif // V8_USE_EXTERNAL_STARTUP_DATA | |
18 | |
19 | |
20 namespace v8 { | |
21 namespace internal { | |
22 | |
23 static base::LazyMutex external_startup_data_mutex = LAZY_MUTEX_INITIALIZER; | |
24 static v8::StartupData external_startup_blob = {NULL, 0}; | |
25 | |
26 void SetSnapshotFromFile(StartupData* snapshot_blob) { | |
27 base::LockGuard<base::Mutex> lock_guard( | |
28 external_startup_data_mutex.Pointer()); | |
29 DCHECK(snapshot_blob); | |
30 DCHECK(snapshot_blob->data); | |
31 DCHECK(snapshot_blob->raw_size > 0); | |
32 DCHECK(!external_startup_blob.data); | |
33 DCHECK(Snapshot::SnapshotIsValid(snapshot_blob)); | |
34 external_startup_blob = *snapshot_blob; | |
35 } | |
36 | |
37 | |
38 const v8::StartupData* Snapshot::DefaultSnapshotBlob() { | |
39 base::LockGuard<base::Mutex> lock_guard( | |
40 external_startup_data_mutex.Pointer()); | |
41 return &external_startup_blob; | |
42 } | |
43 } } // namespace v8::internal | |
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