Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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/snapshot.h" |
| 8 | |
| 9 | #include "src/base/platform/mutex.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 10 | #include "src/snapshot/snapshot-source-sink.h" |
| 11 | #include "src/v8.h" // for V8::Initialize |
| 12 | |
| 13 | |
| 14 | #ifndef V8_USE_EXTERNAL_STARTUP_DATA |
| 15 | #error snapshot-external.cc is used only for the external snapshot build. |
| 16 | #endif // V8_USE_EXTERNAL_STARTUP_DATA |
| 17 | |
| 18 | |
| 19 | namespace v8 { |
| 20 | namespace internal { |
| 21 | |
| 22 | static base::LazyMutex external_startup_data_mutex = LAZY_MUTEX_INITIALIZER; |
| 23 | static v8::StartupData external_startup_blob = {NULL, 0}; |
| 24 | |
| 25 | void SetSnapshotFromFile(StartupData* snapshot_blob) { |
| 26 | base::LockGuard<base::Mutex> lock_guard( |
| 27 | external_startup_data_mutex.Pointer()); |
| 28 | DCHECK(snapshot_blob); |
| 29 | DCHECK(snapshot_blob->data); |
| 30 | DCHECK(snapshot_blob->raw_size > 0); |
| 31 | DCHECK(!external_startup_blob.data); |
| 32 | DCHECK(Snapshot::SnapshotIsValid(snapshot_blob)); |
| 33 | external_startup_blob = *snapshot_blob; |
| 34 | } |
| 35 | |
| 36 | |
| 37 | const v8::StartupData* Snapshot::DefaultSnapshotBlob() { |
| 38 | base::LockGuard<base::Mutex> lock_guard( |
| 39 | external_startup_data_mutex.Pointer()); |
| 40 | return &external_startup_blob; |
| 41 | } |
| 42 | } // namespace internal |
| 43 | } // namespace v8 |