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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef VM_THREAD_INTERRUPTER_H_ | 5 #ifndef VM_THREAD_INTERRUPTER_H_ |
6 #define VM_THREAD_INTERRUPTER_H_ | 6 #define VM_THREAD_INTERRUPTER_H_ |
7 | 7 |
8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
9 #include "vm/signal_handler.h" | 9 #include "vm/signal_handler.h" |
10 #include "vm/os_thread.h" | 10 #include "vm/os_thread.h" |
11 #include "vm/thread.h" | 11 #include "vm/thread.h" |
12 | 12 |
13 namespace dart { | 13 namespace dart { |
14 | 14 |
15 class ThreadInterrupter : public AllStatic { | 15 class ThreadInterrupter : public AllStatic { |
16 public: | 16 public: |
17 static void InitOnce(); | 17 static void InitOnce(); |
18 | 18 |
19 static void Startup(); | 19 static void Startup(); |
20 static void Shutdown(); | 20 static void Shutdown(); |
21 | 21 |
22 // Delay between interrupts. | 22 // Delay between interrupts. |
23 static void SetInterruptPeriod(intptr_t period); | 23 static void SetInterruptPeriod(intptr_t period); |
24 | 24 |
25 // Wake up the thread interrupter thread. | 25 // Wake up the thread interrupter thread. |
26 static void WakeUp(); | 26 static void WakeUp(); |
27 | 27 |
28 // Register the currently running thread for interrupts. If the current thread | |
29 // is already registered, callback and data will be updated. | |
30 static void Register(ThreadInterruptCallback callback, void* data); | |
31 | |
32 // Unregister the currently running thread for interrupts. | |
33 static void Unregister(); | |
34 | |
35 // Interrupt a thread. | 28 // Interrupt a thread. |
36 static void InterruptThread(Thread* thread); | 29 static void InterruptThread(Thread* thread); |
37 | 30 |
38 private: | 31 private: |
39 static const intptr_t kMaxThreads = 4096; | 32 static const intptr_t kMaxThreads = 4096; |
40 static bool initialized_; | 33 static bool initialized_; |
41 static bool shutdown_; | 34 static bool shutdown_; |
42 static bool thread_running_; | 35 static bool thread_running_; |
| 36 static bool woken_up_; |
43 static ThreadJoinId interrupter_thread_id_; | 37 static ThreadJoinId interrupter_thread_id_; |
44 static Monitor* monitor_; | 38 static Monitor* monitor_; |
45 static intptr_t interrupt_period_; | 39 static intptr_t interrupt_period_; |
46 static intptr_t current_wait_time_; | 40 static intptr_t current_wait_time_; |
47 | 41 |
48 static bool InDeepSleep() { | 42 static bool InDeepSleep() { |
49 return current_wait_time_ == Monitor::kNoTimeout; | 43 return current_wait_time_ == Monitor::kNoTimeout; |
50 } | 44 } |
51 | 45 |
52 static void UpdateStateObject(ThreadInterruptCallback callback, void* data); | 46 static void UpdateStateObject(ThreadInterruptCallback callback, void* data); |
53 | 47 |
54 static void ThreadMain(uword parameters); | 48 static void ThreadMain(uword parameters); |
55 | 49 |
56 static void InstallSignalHandler(); | 50 static void InstallSignalHandler(); |
57 | 51 |
58 static void RemoveSignalHandler(); | 52 static void RemoveSignalHandler(); |
59 | 53 |
60 friend class ThreadInterrupterVisitIsolates; | 54 friend class ThreadInterrupterVisitIsolates; |
61 }; | 55 }; |
62 | 56 |
63 void ThreadInterruptNoOp(const InterruptedThreadState& state, void* data); | |
64 | |
65 } // namespace dart | 57 } // namespace dart |
66 | 58 |
67 #endif // VM_THREAD_INTERRUPTER_H_ | 59 #endif // VM_THREAD_INTERRUPTER_H_ |
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