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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_ | |
6 #define MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_ | |
7 | |
8 #include "mojo/public/cpp/system/macros.h" | |
9 | |
10 struct MojoAsyncWaiter; | |
11 struct MojoLogger; | |
12 | |
13 namespace mojo { | |
14 | |
15 // This class just acts as a "namespace": it only has static methods (whose | |
16 // implementation may be varied). Note that some implementations may require | |
17 // their own explicit initialization/shut down functions to be called. | |
18 class Environment { | |
19 public: | |
20 static const MojoAsyncWaiter* GetDefaultAsyncWaiter(); | |
21 // Setting the default async waiter to null will use the original default | |
22 // implementation. | |
23 static void SetDefaultAsyncWaiter(const MojoAsyncWaiter* async_waiter); | |
24 | |
25 static const MojoLogger* GetDefaultLogger(); | |
26 // Setting the logger to null will use the will use the original default | |
27 // implementation. | |
28 static void SetDefaultLogger(const MojoLogger* logger); | |
29 | |
30 // These instantiate and destroy an environment-specific run loop for the | |
31 // current thread, allowing |GetDefaultAsyncWaiter()| to be used. (The run | |
32 // loop itself should be accessible via thread-local storage, using methods | |
33 // specific to the run loop implementation.) Creating and destroying nested | |
34 // run loops is not supported. | |
35 static void InstantiateDefaultRunLoop(); | |
36 static void DestroyDefaultRunLoop(); | |
37 | |
38 private: | |
39 Environment() = delete; | |
40 ~Environment() = delete; | |
41 }; | |
42 | |
43 } // namespace mojo | |
44 | |
45 #endif // MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_ | |
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