1 // Copyright 2013 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 #ifndef V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
6 #define V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
7 
8 #include <map>
9 #include <queue>
10 #include <vector>
11 
12 #include "include/v8-platform.h"
13 #include "src/base/macros.h"
14 #include "src/base/platform/mutex.h"
15 #include "src/libplatform/task-queue.h"
16 
17 namespace v8 {
18 namespace platform {
19 
20 class TaskQueue;
21 class Thread;
22 class WorkerThread;
23 
24 class DefaultPlatform : public Platform {
25  public:
26   DefaultPlatform();
27   virtual ~DefaultPlatform();
28 
29   void SetThreadPoolSize(int thread_pool_size);
30 
31   void EnsureInitialized();
32 
33   bool PumpMessageLoop(v8::Isolate* isolate);
34 
35   // v8::Platform implementation.
36   virtual void CallOnBackgroundThread(
37       Task* task, ExpectedRuntime expected_runtime) OVERRIDE;
38   virtual void CallOnForegroundThread(v8::Isolate* isolate,
39                                       Task* task) OVERRIDE;
40 
41  private:
42   static const int kMaxThreadPoolSize;
43 
44   base::Mutex lock_;
45   bool initialized_;
46   int thread_pool_size_;
47   std::vector<WorkerThread*> thread_pool_;
48   TaskQueue queue_;
49   std::map<v8::Isolate*, std::queue<Task*> > main_thread_queue_;
50 
51   DISALLOW_COPY_AND_ASSIGN(DefaultPlatform);
52 };
53 
54 
55 } }  // namespace v8::platform
56 
57 
58 #endif  // V8_LIBPLATFORM_DEFAULT_PLATFORM_H_
59