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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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33 #include "../checks.h" | 33 #include "../checks.h" |
34 // TODO(jochen): Why is cpu.h not in platform/? | 34 // TODO(jochen): Why is cpu.h not in platform/? |
35 #include "../cpu.h" | 35 #include "../cpu.h" |
36 #include "worker-thread.h" | 36 #include "worker-thread.h" |
37 | 37 |
38 namespace v8 { | 38 namespace v8 { |
39 namespace internal { | 39 namespace internal { |
40 | 40 |
41 | 41 |
42 DefaultPlatform::DefaultPlatform() | 42 DefaultPlatform::DefaultPlatform() |
43 : initialized_(false) {} | 43 : initialized_(false), thread_pool_size_(0) {} |
44 | 44 |
45 | 45 |
46 DefaultPlatform::~DefaultPlatform() { | 46 DefaultPlatform::~DefaultPlatform() { |
47 LockGuard<Mutex> guard(&lock_); | 47 LockGuard<Mutex> guard(&lock_); |
48 if (initialized_) { | 48 if (initialized_) { |
49 queue_.Terminate(); | 49 queue_.Terminate(); |
50 for (std::vector<WorkerThread*>::iterator i = thread_pool_.begin(); | 50 for (std::vector<WorkerThread*>::iterator i = thread_pool_.begin(); |
51 i != thread_pool_.end(); ++i) { | 51 i != thread_pool_.end(); ++i) { |
52 delete *i; | 52 delete *i; |
53 } | 53 } |
54 } | 54 } |
55 } | 55 } |
56 | 56 |
57 | 57 |
58 void DefaultPlatform::SetThreadPoolSize(int thread_pool_size) { | 58 void DefaultPlatform::SetThreadPoolSize(int thread_pool_size) { |
59 LockGuard<Mutex> guard(&lock_); | 59 LockGuard<Mutex> guard(&lock_); |
60 ASSERT(thread_pool_size >= 0); | 60 ASSERT(thread_pool_size >= 0); |
| 61 if (thread_pool_size < 1) |
| 62 thread_pool_size = CPU::NumberOfProcessorsOnline(); |
| 63 thread_pool_size_ = Max(Min(thread_pool_size, kMaxThreadPoolSize), 1); |
| 64 } |
| 65 |
| 66 |
| 67 void DefaultPlatform::EnsureInitialized() { |
| 68 LockGuard<Mutex> guard(&lock_); |
61 if (initialized_) return; | 69 if (initialized_) return; |
62 initialized_ = true; | 70 initialized_ = true; |
63 if (thread_pool_size < 1) | |
64 thread_pool_size = CPU::NumberOfProcessorsOnline(); | |
65 thread_pool_size = Max(Min(thread_pool_size, kMaxThreadPoolSize), 1); | |
66 | 71 |
67 for (int i = 0; i < thread_pool_size; ++i) | 72 for (int i = 0; i < thread_pool_size_; ++i) |
68 thread_pool_.push_back(new WorkerThread(&queue_)); | 73 thread_pool_.push_back(new WorkerThread(&queue_)); |
69 } | 74 } |
70 | 75 |
71 void DefaultPlatform::CallOnBackgroundThread(Task *task, | 76 void DefaultPlatform::CallOnBackgroundThread(Task *task, |
72 ExpectedRuntime expected_runtime) { | 77 ExpectedRuntime expected_runtime) { |
73 #ifdef DEBUG | 78 EnsureInitialized(); |
74 { | |
75 LockGuard<Mutex> guard(&lock_); | |
76 ASSERT(initialized_); | |
77 } | |
78 #endif | |
79 queue_.Append(task); | 79 queue_.Append(task); |
80 } | 80 } |
81 | 81 |
82 | 82 |
83 void DefaultPlatform::CallOnForegroundThread(v8::Isolate* isolate, Task* task) { | 83 void DefaultPlatform::CallOnForegroundThread(v8::Isolate* isolate, Task* task) { |
84 // TODO(jochen): implement. | 84 // TODO(jochen): implement. |
85 task->Run(); | 85 task->Run(); |
86 delete task; | 86 delete task; |
87 } | 87 } |
88 | 88 |
89 } } // namespace v8::internal | 89 } } // namespace v8::internal |
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