callback_helper.h revision 5c02ac1a9c1b504631c0a3d2b6e737b5d738bae1 
1// This file was GENERATED by command:
2//     pump.py callback_helper.h.pump
3// DO NOT EDIT BY HAND!!!
4
5
6// Copyright 2014 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 CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_HELPER_H_
11#define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_HELPER_H_
12
13#include "base/bind.h"
14#include "base/location.h"
15#include "base/logging.h"
16#include "base/thread_task_runner_handle.h"
17
18// TODO(tzik): Merge this file to media/base/bind_to_current_loop.h.
19
20namespace sync_file_system {
21namespace drive_backend {
22
23namespace internal {
24
25template <typename T>
26typename base::enable_if<
27    base::internal::IsMoveOnlyType<T>::value,
28    base::internal::PassedWrapper<T> >::type
29RebindForward(T& t) {
30  return base::Passed(&t);
31}
32
33template <typename T>
34typename base::enable_if<
35    !base::internal::IsMoveOnlyType<T>::value,
36    T&>::type
37RebindForward(T& t) {
38  return t;
39}
40
41template <typename>
42struct RelayToTaskRunnerHelper;
43
44template <>
45struct RelayToTaskRunnerHelper<void()> {
46  static void Run(base::TaskRunner* task_runner,
47                  const tracked_objects::Location& from_here,
48                  const base::Callback<void()>& callback) {
49    task_runner->PostTask(from_here, base::Bind(callback));
50  }
51};
52
53template <typename A1>
54struct RelayToTaskRunnerHelper<void(A1)> {
55  static void Run(base::TaskRunner* task_runner,
56                  const tracked_objects::Location& from_here,
57                  const base::Callback<void(A1)>& callback, A1 a1) {
58    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1)));
59  }
60};
61
62template <typename A1, typename A2>
63struct RelayToTaskRunnerHelper<void(A1, A2)> {
64  static void Run(base::TaskRunner* task_runner,
65                  const tracked_objects::Location& from_here,
66                  const base::Callback<void(A1, A2)>& callback, A1 a1, A2 a2) {
67    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1),
68        RebindForward(a2)));
69  }
70};
71
72template <typename A1, typename A2, typename A3>
73struct RelayToTaskRunnerHelper<void(A1, A2, A3)> {
74  static void Run(base::TaskRunner* task_runner,
75                  const tracked_objects::Location& from_here,
76                  const base::Callback<void(A1, A2, A3)>& callback, A1 a1,
77                      A2 a2, A3 a3) {
78    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1),
79        RebindForward(a2), RebindForward(a3)));
80  }
81};
82
83template <typename A1, typename A2, typename A3, typename A4>
84struct RelayToTaskRunnerHelper<void(A1, A2, A3, A4)> {
85  static void Run(base::TaskRunner* task_runner,
86                  const tracked_objects::Location& from_here,
87                  const base::Callback<void(A1, A2, A3, A4)>& callback, A1 a1,
88                      A2 a2, A3 a3, A4 a4) {
89    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1),
90        RebindForward(a2), RebindForward(a3), RebindForward(a4)));
91  }
92};
93
94template <typename A1, typename A2, typename A3, typename A4, typename A5>
95struct RelayToTaskRunnerHelper<void(A1, A2, A3, A4, A5)> {
96  static void Run(base::TaskRunner* task_runner,
97                  const tracked_objects::Location& from_here,
98                  const base::Callback<void(A1, A2, A3, A4, A5)>& callback,
99                      A1 a1, A2 a2, A3 a3, A4 a4, A5 a5) {
100    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1),
101        RebindForward(a2), RebindForward(a3), RebindForward(a4),
102        RebindForward(a5)));
103  }
104};
105
106template <typename A1, typename A2, typename A3, typename A4, typename A5,
107    typename A6>
108struct RelayToTaskRunnerHelper<void(A1, A2, A3, A4, A5, A6)> {
109  static void Run(base::TaskRunner* task_runner,
110                  const tracked_objects::Location& from_here,
111                  const base::Callback<void(A1, A2, A3, A4, A5, A6)>& callback,
112                      A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6) {
113    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1),
114        RebindForward(a2), RebindForward(a3), RebindForward(a4),
115        RebindForward(a5), RebindForward(a6)));
116  }
117};
118
119template <typename A1, typename A2, typename A3, typename A4, typename A5,
120    typename A6, typename A7>
121struct RelayToTaskRunnerHelper<void(A1, A2, A3, A4, A5, A6, A7)> {
122  static void Run(base::TaskRunner* task_runner,
123                  const tracked_objects::Location& from_here,
124                  const base::Callback<void(A1, A2, A3, A4, A5, A6,
125                      A7)>& callback, A1 a1, A2 a2, A3 a3, A4 a4, A5 a5, A6 a6,
126                      A7 a7) {
127    task_runner->PostTask(from_here, base::Bind(callback, RebindForward(a1),
128        RebindForward(a2), RebindForward(a3), RebindForward(a4),
129        RebindForward(a5), RebindForward(a6), RebindForward(a7)));
130  }
131};
132
133}  // namespace internal
134
135template <typename T>
136base::Callback<T> RelayCallbackToTaskRunner(
137    base::TaskRunner* task_runner,
138    const tracked_objects::Location& from_here,
139    const base::Callback<T>& callback) {
140  DCHECK(task_runner->RunsTasksOnCurrentThread());
141  return base::Bind(&internal::RelayToTaskRunnerHelper<T>::Run,
142                    make_scoped_refptr(task_runner), from_here,
143                    callback);
144}
145
146template <typename T>
147base::Callback<T> RelayCallbackToCurrentThread(
148    const tracked_objects::Location& from_here,
149    const base::Callback<T>& callback) {
150  return RelayCallbackToTaskRunner(
151      base::ThreadTaskRunnerHandle::Get(),
152      from_here, callback);
153}
154
155}  // namespace drive_backend
156}  // namespace sync_file_system
157
158#endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_CALLBACK_HELPER_H_
159