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| 1 // This file was GENERATED by command: | |
| 2 // pump.py bind_to_loop.h.pump | |
| 3 // DO NOT EDIT BY HAND!!! | |
| 4 | |
| 5 | |
| 6 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 7 // Use of this source code is governed by a BSD-style license that can be | |
| 8 // found in the LICENSE file. | |
| 9 | |
| 10 #ifndef MEDIA_BASE_BIND_TO_LOOP_H_ | |
| 11 #define MEDIA_BASE_BIND_TO_LOOP_H_ | |
| 12 | |
| 13 #include "base/bind.h" | |
| 14 #include "base/location.h" | |
| 15 #include "base/message_loop/message_loop_proxy.h" | |
| 16 #include "base/single_thread_task_runner.h" | |
| 17 | |
| 18 // This is a helper utility for base::Bind()ing callbacks to the current | |
| 19 // MessageLoop. The typical use is when |a| (of class |A|) wants to hand a | |
| 20 // callback such as base::Bind(&A::AMethod, a) to |b|, but needs to ensure that | |
| 21 // when |b| executes the callback, it does so on |a|'s current MessageLoop. | |
| 22 // | |
| 23 // Typical usage: request to be called back on the current thread: | |
| 24 // other->StartAsyncProcessAndCallMeBack( | |
| 25 // media::BindToCurrentLoop(base::Bind(&MyClass::MyMethod, this))); | |
| 26 // | |
| 27 // Note that like base::Bind(), BindToCurrentLoop() can't bind non-constant | |
| 28 // references, and that *unlike* base::Bind(), BindToCurrentLoop() makes copies | |
| 29 // of its arguments, and thus can't be used with arrays. | |
| 30 | |
| 31 namespace media { | |
| 32 | |
| 33 // Mimic base::internal::CallbackForward, replacing p.Pass() with | |
| 34 // base::Passed(&p) to account for the extra layer of indirection. | |
| 35 namespace internal { | |
| 36 template <typename T> | |
| 37 T& TrampolineForward(T& t) { return t; } | |
| 38 | |
| 39 template <typename T> | |
| 40 base::internal::PassedWrapper<scoped_ptr<T> > TrampolineForward( | |
| 41 scoped_ptr<T>& p) { return base::Passed(&p); } | |
| 42 | |
| 43 template <typename T, typename R> | |
| 44 base::internal::PassedWrapper<scoped_ptr_malloc<T, R> > TrampolineForward( | |
| 45 scoped_ptr_malloc<T, R>& p) { return base::Passed(&p); } | |
| 46 | |
| 47 template <typename T> | |
| 48 base::internal::PassedWrapper<ScopedVector<T> > TrampolineForward( | |
| 49 ScopedVector<T>& p) { return base::Passed(&p); } | |
| 50 | |
| 51 template <typename T> struct TrampolineHelper; | |
| 52 | |
| 53 template <> | |
| 54 struct TrampolineHelper<void()> { | |
| 55 static void Run( | |
| 56 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 57 const base::Callback<void()>& cb) { | |
| 58 task_runner->PostTask(FROM_HERE, base::Bind(cb)); | |
| 59 } | |
| 60 }; | |
| 61 | |
| 62 | |
| 63 template <typename A1> | |
| 64 struct TrampolineHelper<void(A1)> { | |
| 65 static void Run( | |
| 66 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 67 const base::Callback<void(A1)>& cb, A1 a1) { | |
| 68 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 69 internal::TrampolineForward(a1))); | |
| 70 } | |
| 71 }; | |
| 72 | |
| 73 | |
| 74 template <typename A1, typename A2> | |
| 75 struct TrampolineHelper<void(A1, A2)> { | |
| 76 static void Run( | |
| 77 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 78 const base::Callback<void(A1, A2)>& cb, A1 a1, A2 a2) { | |
| 79 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 80 internal::TrampolineForward(a1), internal::TrampolineForward(a2))); | |
| 81 } | |
| 82 }; | |
| 83 | |
| 84 | |
| 85 template <typename A1, typename A2, typename A3> | |
| 86 struct TrampolineHelper<void(A1, A2, A3)> { | |
| 87 static void Run( | |
| 88 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 89 const base::Callback<void(A1, A2, A3)>& cb, A1 a1, A2 a2, A3 a3) { | |
| 90 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 91 internal::TrampolineForward(a1), internal::TrampolineForward(a2), | |
| 92 internal::TrampolineForward(a3))); | |
| 93 } | |
| 94 }; | |
| 95 | |
| 96 | |
| 97 template <typename A1, typename A2, typename A3, typename A4> | |
| 98 struct TrampolineHelper<void(A1, A2, A3, A4)> { | |
| 99 static void Run( | |
| 100 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 101 const base::Callback<void(A1, A2, A3, A4)>& cb, A1 a1, A2 a2, A3 a3, | |
| 102 A4 a4) { | |
| 103 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 104 internal::TrampolineForward(a1), internal::TrampolineForward(a2), | |
| 105 internal::TrampolineForward(a3), internal::TrampolineForward(a4))); | |
| 106 } | |
| 107 }; | |
| 108 | |
| 109 | |
| 110 template <typename A1, typename A2, typename A3, typename A4, typename A5> | |
| 111 struct TrampolineHelper<void(A1, A2, A3, A4, A5)> { | |
| 112 static void Run( | |
| 113 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 114 const base::Callback<void(A1, A2, A3, A4, A5)>& cb, A1 a1, A2 a2, A3 a3, | |
| 115 A4 a4, A5 a5) { | |
| 116 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 117 internal::TrampolineForward(a1), internal::TrampolineForward(a2), | |
| 118 internal::TrampolineForward(a3), internal::TrampolineForward(a4), | |
| 119 internal::TrampolineForward(a5))); | |
| 120 } | |
| 121 }; | |
| 122 | |
| 123 | |
| 124 template <typename A1, typename A2, typename A3, typename A4, typename A5, | |
| 125 typename A6> | |
| 126 struct TrampolineHelper<void(A1, A2, A3, A4, A5, A6)> { | |
| 127 static void Run( | |
| 128 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 129 const base::Callback<void(A1, A2, A3, A4, A5, A6)>& cb, A1 a1, A2 a2, | |
| 130 A3 a3, A4 a4, A5 a5, A6 a6) { | |
| 131 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 132 internal::TrampolineForward(a1), internal::TrampolineForward(a2), | |
| 133 internal::TrampolineForward(a3), internal::TrampolineForward(a4), | |
| 134 internal::TrampolineForward(a5), internal::TrampolineForward(a6))); | |
| 135 } | |
| 136 }; | |
| 137 | |
| 138 | |
| 139 template <typename A1, typename A2, typename A3, typename A4, typename A5, | |
| 140 typename A6, typename A7> | |
| 141 struct TrampolineHelper<void(A1, A2, A3, A4, A5, A6, A7)> { | |
| 142 static void Run( | |
| 143 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner, | |
| 144 const base::Callback<void(A1, A2, A3, A4, A5, A6, A7)>& cb, A1 a1, A2 a2, | |
| 145 A3 a3, A4 a4, A5 a5, A6 a6, A7 a7) { | |
| 146 task_runner->PostTask(FROM_HERE, base::Bind(cb, | |
| 147 internal::TrampolineForward(a1), internal::TrampolineForward(a2), | |
| 148 internal::TrampolineForward(a3), internal::TrampolineForward(a4), | |
| 149 internal::TrampolineForward(a5), internal::TrampolineForward(a6), | |
| 150 internal::TrampolineForward(a7))); | |
| 151 } | |
| 152 }; | |
| 153 | |
| 154 | |
| 155 } // namespace internal | |
| 156 | |
| 157 // TODO(scherkus): Rename me to something that emphasizes the asynchrony | |
| 158 // http://crbug.com/167240 | |
| 159 template<typename T> | |
| 160 static base::Callback<T> BindToCurrentLoop( | |
| 161 const base::Callback<T>& cb) { | |
| 162 return base::Bind(&internal::TrampolineHelper<T>::Run, | |
| 163 base::MessageLoopProxy::current(), cb); | |
| 164 } | |
| 165 | |
| 166 } // namespace media | |
| 167 | |
| 168 #endif // MEDIA_BASE_BIND_TO_LOOP_H_ | |
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Chromium Code Reviews
Issue 132163006:
Rename media/base/bind_to_loop.h to media/base/bind_to_current_loop.h. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src