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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ | 5 #ifndef BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ |
| 6 #define BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ | 6 #define BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ |
| 7 | 7 |
| 8 #include <queue> | 8 #include <queue> |
| 9 #include <string> | 9 #include <string> |
| 10 | 10 |
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| 27 | 27 |
| 28 // TODO(sky): these includes should not be necessary. Nuke them. | 28 // TODO(sky): these includes should not be necessary. Nuke them. |
| 29 #if defined(OS_WIN) | 29 #if defined(OS_WIN) |
| 30 #include "base/message_loop/message_pump_win.h" | 30 #include "base/message_loop/message_pump_win.h" |
| 31 #elif defined(OS_IOS) | 31 #elif defined(OS_IOS) |
| 32 #include "base/message_loop/message_pump_io_ios.h" | 32 #include "base/message_loop/message_pump_io_ios.h" |
| 33 #elif defined(OS_POSIX) | 33 #elif defined(OS_POSIX) |
| 34 #include "base/message_loop/message_pump_libevent.h" | 34 #include "base/message_loop/message_pump_libevent.h" |
| 35 #if !defined(OS_MACOSX) && !defined(OS_ANDROID) | 35 #if !defined(OS_MACOSX) && !defined(OS_ANDROID) |
| 36 | 36 |
| 37 #if defined(USE_AURA) && defined(USE_X11) && !defined(OS_NACL) | 37 #if defined(USE_GLIB) && !defined(OS_NACL) |
| 38 #include "base/message_loop/message_pump_x11.h" | 38 #include "base/message_loop/message_pump_glib.h" |
| 39 #elif !defined(OS_ANDROID_HOST) | 39 #elif !defined(OS_ANDROID_HOST) |
| 40 #define USE_GTK_MESSAGE_PUMP | 40 #include "base/message_loop/message_pump_glib.h" |
| 41 #include "base/message_loop/message_pump_gtk.h" | |
| 42 #if defined(TOOLKIT_GTK) | |
| 43 #include "base/message_loop/message_pump_x11.h" | |
| 44 #endif | |
| 45 #endif | 41 #endif |
| 46 | 42 |
| 47 #endif | 43 #endif |
| 48 #endif | 44 #endif |
| 49 | 45 |
| 50 namespace base { | 46 namespace base { |
| 51 | 47 |
| 52 class HistogramBase; | 48 class HistogramBase; |
| 53 class MessagePumpObserver; | 49 class MessagePumpObserver; |
| 54 class RunLoop; | 50 class RunLoop; |
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| 88 // } | 84 // } |
| 89 // // Process |hr| (the result returned by DoDragDrop()). | 85 // // Process |hr| (the result returned by DoDragDrop()). |
| 90 // | 86 // |
| 91 // Please be SURE your task is reentrant (nestable) and all global variables | 87 // Please be SURE your task is reentrant (nestable) and all global variables |
| 92 // are stable and accessible before calling SetNestableTasksAllowed(true). | 88 // are stable and accessible before calling SetNestableTasksAllowed(true). |
| 93 // | 89 // |
| 94 class BASE_EXPORT MessageLoop : public MessagePump::Delegate { | 90 class BASE_EXPORT MessageLoop : public MessagePump::Delegate { |
| 95 public: | 91 public: |
| 96 #if defined(OS_WIN) | 92 #if defined(OS_WIN) |
| 97 typedef MessagePumpObserver Observer; | 93 typedef MessagePumpObserver Observer; |
| 98 #elif defined(USE_GTK_MESSAGE_PUMP) | |
| 99 typedef MessagePumpGdkObserver Observer; | |
| 100 #endif | 94 #endif |
| 101 | 95 |
| 102 // A MessageLoop has a particular type, which indicates the set of | 96 // A MessageLoop has a particular type, which indicates the set of |
| 103 // asynchronous events it may process in addition to tasks and timers. | 97 // asynchronous events it may process in addition to tasks and timers. |
| 104 // | 98 // |
| 105 // TYPE_DEFAULT | 99 // TYPE_DEFAULT |
| 106 // This type of ML only supports tasks and timers. | 100 // This type of ML only supports tasks and timers. |
| 107 // | 101 // |
| 108 // TYPE_UI | 102 // TYPE_UI |
| 109 // This type of ML also supports native UI events (e.g., Windows messages). | 103 // This type of ML also supports native UI events (e.g., Windows messages). |
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| 406 protected: | 400 protected: |
| 407 | 401 |
| 408 #if defined(OS_WIN) | 402 #if defined(OS_WIN) |
| 409 MessagePumpWin* pump_win() { | 403 MessagePumpWin* pump_win() { |
| 410 return static_cast<MessagePumpWin*>(pump_.get()); | 404 return static_cast<MessagePumpWin*>(pump_.get()); |
| 411 } | 405 } |
| 412 #elif defined(OS_POSIX) && !defined(OS_IOS) | 406 #elif defined(OS_POSIX) && !defined(OS_IOS) |
| 413 MessagePumpLibevent* pump_libevent() { | 407 MessagePumpLibevent* pump_libevent() { |
| 414 return static_cast<MessagePumpLibevent*>(pump_.get()); | 408 return static_cast<MessagePumpLibevent*>(pump_.get()); |
| 415 } | 409 } |
| 416 #if defined(TOOLKIT_GTK) | |
| 417 friend class MessagePumpX11; | |
| 418 MessagePumpX11* pump_gpu() { | |
| 419 DCHECK_EQ(TYPE_GPU, type()); | |
| 420 return static_cast<MessagePumpX11*>(pump_.get()); | |
| 421 } | |
| 422 #endif | |
| 423 #endif | 410 #endif |
| 424 | 411 |
| 425 scoped_ptr<MessagePump> pump_; | 412 scoped_ptr<MessagePump> pump_; |
| 426 | 413 |
| 427 private: | 414 private: |
| 428 friend class internal::IncomingTaskQueue; | 415 friend class internal::IncomingTaskQueue; |
| 429 friend class RunLoop; | 416 friend class RunLoop; |
| 430 | 417 |
| 431 // Configures various members for the two constructors. | 418 // Configures various members for the two constructors. |
| 432 void Init(); | 419 void Init(); |
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| 586 // Please see MessagePumpLibevent for definition. | 573 // Please see MessagePumpLibevent for definition. |
| 587 bool WatchFileDescriptor( | 574 bool WatchFileDescriptor( |
| 588 int fd, | 575 int fd, |
| 589 bool persistent, | 576 bool persistent, |
| 590 MessagePumpLibevent::Mode mode, | 577 MessagePumpLibevent::Mode mode, |
| 591 MessagePumpLibevent::FileDescriptorWatcher* controller, | 578 MessagePumpLibevent::FileDescriptorWatcher* controller, |
| 592 MessagePumpLibevent::Watcher* delegate); | 579 MessagePumpLibevent::Watcher* delegate); |
| 593 #endif | 580 #endif |
| 594 | 581 |
| 595 protected: | 582 protected: |
| 596 #if defined(USE_X11) | |
| 597 friend class MessagePumpX11; | |
| 598 #endif | |
| 599 | |
| 600 #if !defined(OS_MACOSX) && !defined(OS_ANDROID) | 583 #if !defined(OS_MACOSX) && !defined(OS_ANDROID) |
| 601 // TODO(rvargas): Make this platform independent. | 584 // TODO(rvargas): Make this platform independent. |
| 602 MessagePumpForUI* pump_ui() { | 585 MessagePumpForUI* pump_ui() { |
| 603 return static_cast<MessagePumpForUI*>(pump_.get()); | 586 return static_cast<MessagePumpForUI*>(pump_.get()); |
| 604 } | 587 } |
| 605 #endif | 588 #endif |
| 606 }; | 589 }; |
| 607 | 590 |
| 608 // Do not add any member variables to MessageLoopForUI! This is important b/c | 591 // Do not add any member variables to MessageLoopForUI! This is important b/c |
| 609 // MessageLoopForUI is often allocated via MessageLoop(TYPE_UI). Any extra | 592 // MessageLoopForUI is often allocated via MessageLoop(TYPE_UI). Any extra |
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| 714 | 697 |
| 715 // Do not add any member variables to MessageLoopForIO! This is important b/c | 698 // Do not add any member variables to MessageLoopForIO! This is important b/c |
| 716 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO). Any extra | 699 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO). Any extra |
| 717 // data that you need should be stored on the MessageLoop's pump_ instance. | 700 // data that you need should be stored on the MessageLoop's pump_ instance. |
| 718 COMPILE_ASSERT(sizeof(MessageLoop) == sizeof(MessageLoopForIO), | 701 COMPILE_ASSERT(sizeof(MessageLoop) == sizeof(MessageLoopForIO), |
| 719 MessageLoopForIO_should_not_have_extra_member_variables); | 702 MessageLoopForIO_should_not_have_extra_member_variables); |
| 720 | 703 |
| 721 } // namespace base | 704 } // namespace base |
| 722 | 705 |
| 723 #endif // BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ | 706 #endif // BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_ |
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