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| 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 RUNTIME_VM_MESSAGE_HANDLER_H_ | 5 #ifndef RUNTIME_VM_MESSAGE_HANDLER_H_ |
| 6 #define RUNTIME_VM_MESSAGE_HANDLER_H_ | 6 #define RUNTIME_VM_MESSAGE_HANDLER_H_ |
| 7 | 7 |
| 8 #include "vm/isolate.h" | 8 #include "vm/isolate.h" |
| 9 #include "vm/lockers.h" | 9 #include "vm/lockers.h" |
| 10 #include "vm/message.h" | 10 #include "vm/message.h" |
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| 70 // Returns true on success. | 70 // Returns true on success. |
| 71 MessageStatus HandleOOBMessages(); | 71 MessageStatus HandleOOBMessages(); |
| 72 | 72 |
| 73 // Returns true if there are pending OOB messages for this message | 73 // Returns true if there are pending OOB messages for this message |
| 74 // handler. | 74 // handler. |
| 75 bool HasOOBMessages(); | 75 bool HasOOBMessages(); |
| 76 | 76 |
| 77 // A message handler tracks how many live ports it has. | 77 // A message handler tracks how many live ports it has. |
| 78 bool HasLivePorts() const { return live_ports_ > 0; } | 78 bool HasLivePorts() const { return live_ports_ > 0; } |
| 79 | 79 |
| 80 intptr_t live_ports() const { | 80 intptr_t live_ports() const { return live_ports_; } |
| 81 return live_ports_; | |
| 82 } | |
| 83 | 81 |
| 84 void DebugDump(); | 82 void DebugDump(); |
| 85 | 83 |
| 86 bool paused() const { return paused_ > 0; } | 84 bool paused() const { return paused_ > 0; } |
| 87 | 85 |
| 88 void increment_paused() { paused_++; } | 86 void increment_paused() { paused_++; } |
| 89 void decrement_paused() { ASSERT(paused_ > 0); paused_--; } | 87 void decrement_paused() { |
| 88 ASSERT(paused_ > 0); |
| 89 paused_--; |
| 90 } |
| 90 | 91 |
| 91 bool ShouldPauseOnStart(MessageStatus status) const; | 92 bool ShouldPauseOnStart(MessageStatus status) const; |
| 92 bool should_pause_on_start() const { | 93 bool should_pause_on_start() const { return should_pause_on_start_; } |
| 93 return should_pause_on_start_; | |
| 94 } | |
| 95 | 94 |
| 96 void set_should_pause_on_start(bool should_pause_on_start) { | 95 void set_should_pause_on_start(bool should_pause_on_start) { |
| 97 should_pause_on_start_ = should_pause_on_start; | 96 should_pause_on_start_ = should_pause_on_start; |
| 98 } | 97 } |
| 99 | 98 |
| 100 bool is_paused_on_start() const { | 99 bool is_paused_on_start() const { return is_paused_on_start_; } |
| 101 return is_paused_on_start_; | |
| 102 } | |
| 103 | 100 |
| 104 bool ShouldPauseOnExit(MessageStatus status) const; | 101 bool ShouldPauseOnExit(MessageStatus status) const; |
| 105 bool should_pause_on_exit() const { | 102 bool should_pause_on_exit() const { return should_pause_on_exit_; } |
| 106 return should_pause_on_exit_; | |
| 107 } | |
| 108 | 103 |
| 109 void set_should_pause_on_exit(bool should_pause_on_exit) { | 104 void set_should_pause_on_exit(bool should_pause_on_exit) { |
| 110 should_pause_on_exit_ = should_pause_on_exit; | 105 should_pause_on_exit_ = should_pause_on_exit; |
| 111 } | 106 } |
| 112 | 107 |
| 113 bool is_paused_on_exit() const { | 108 bool is_paused_on_exit() const { return is_paused_on_exit_; } |
| 114 return is_paused_on_exit_; | |
| 115 } | |
| 116 | 109 |
| 117 // Timestamp of the paused on start or paused on exit. | 110 // Timestamp of the paused on start or paused on exit. |
| 118 int64_t paused_timestamp() const { | 111 int64_t paused_timestamp() const { return paused_timestamp_; } |
| 119 return paused_timestamp_; | |
| 120 } | |
| 121 | 112 |
| 122 void PausedOnStart(bool paused); | 113 void PausedOnStart(bool paused); |
| 123 void PausedOnExit(bool paused); | 114 void PausedOnExit(bool paused); |
| 124 | 115 |
| 125 // Gives temporary ownership of |queue| and |oob_queue|. Using this object | 116 // Gives temporary ownership of |queue| and |oob_queue|. Using this object |
| 126 // has the side effect that no OOB messages will be handled if a stack | 117 // has the side effect that no OOB messages will be handled if a stack |
| 127 // overflow interrupt is delivered. | 118 // overflow interrupt is delivered. |
| 128 class AcquiredQueues : public ValueObject { | 119 class AcquiredQueues : public ValueObject { |
| 129 public: | 120 public: |
| 130 explicit AcquiredQueues(MessageHandler* handler); | 121 explicit AcquiredQueues(MessageHandler* handler); |
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| 233 bool allow_normal_messages, | 224 bool allow_normal_messages, |
| 234 bool allow_multiple_normal_messages); | 225 bool allow_multiple_normal_messages); |
| 235 | 226 |
| 236 Monitor monitor_; // Protects all fields in MessageHandler. | 227 Monitor monitor_; // Protects all fields in MessageHandler. |
| 237 MessageQueue* queue_; | 228 MessageQueue* queue_; |
| 238 MessageQueue* oob_queue_; | 229 MessageQueue* oob_queue_; |
| 239 // This flag is not thread safe and can only reliably be accessed on a single | 230 // This flag is not thread safe and can only reliably be accessed on a single |
| 240 // thread. | 231 // thread. |
| 241 bool oob_message_handling_allowed_; | 232 bool oob_message_handling_allowed_; |
| 242 intptr_t live_ports_; // The number of open ports, including control ports. | 233 intptr_t live_ports_; // The number of open ports, including control ports. |
| 243 intptr_t paused_; // The number of pause messages received. | 234 intptr_t paused_; // The number of pause messages received. |
| 244 bool should_pause_on_start_; | 235 bool should_pause_on_start_; |
| 245 bool should_pause_on_exit_; | 236 bool should_pause_on_exit_; |
| 246 bool is_paused_on_start_; | 237 bool is_paused_on_start_; |
| 247 bool is_paused_on_exit_; | 238 bool is_paused_on_exit_; |
| 248 bool delete_me_; | 239 bool delete_me_; |
| 249 int64_t paused_timestamp_; | 240 int64_t paused_timestamp_; |
| 250 ThreadPool* pool_; | 241 ThreadPool* pool_; |
| 251 ThreadPool::Task* task_; | 242 ThreadPool::Task* task_; |
| 252 StartCallback start_callback_; | 243 StartCallback start_callback_; |
| 253 EndCallback end_callback_; | 244 EndCallback end_callback_; |
| 254 CallbackData callback_data_; | 245 CallbackData callback_data_; |
| 255 | 246 |
| 256 DISALLOW_COPY_AND_ASSIGN(MessageHandler); | 247 DISALLOW_COPY_AND_ASSIGN(MessageHandler); |
| 257 }; | 248 }; |
| 258 | 249 |
| 259 } // namespace dart | 250 } // namespace dart |
| 260 | 251 |
| 261 #endif // RUNTIME_VM_MESSAGE_HANDLER_H_ | 252 #endif // RUNTIME_VM_MESSAGE_HANDLER_H_ |
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