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Side by Side Diff: mojo/public/cpp/environment/environment.h

Issue 814543006: Move //mojo/{public, edk} underneath //third_party (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Rebase Created 5 years, 11 months ago
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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 // Other parts of the Mojo C++ APIs use the *static* methods of this class.
16 //
17 // The "standalone" implementation of this class requires that this class (in
18 // the lib/ subdirectory) be instantiated (and remain so) while using the Mojo
19 // C++ APIs. I.e., the static methods depend on things set up by the constructor
20 // and torn down by the destructor.
21 //
22 // Other implementations may not have this requirement.
23 class Environment {
24 public:
25 Environment();
26 // This constructor allows the standard implementations to be overridden (set
27 // a parameter to null to get the standard implementation).
28 Environment(const MojoAsyncWaiter* default_async_waiter,
29 const MojoLogger* default_logger);
30 ~Environment();
31
32 static const MojoAsyncWaiter* GetDefaultAsyncWaiter();
33 static const MojoLogger* GetDefaultLogger();
34
35 // These instantiate and destroy an environment-specific run loop for the
36 // current thread, allowing |GetDefaultAsyncWaiter()| to be used. (The run
37 // loop itself should be accessible via thread-local storage, using methods
38 // specific to the run loop implementation.) Creating and destroying nested
39 // run loops is not supported.
40 static void InstantiateDefaultRunLoop();
41 static void DestroyDefaultRunLoop();
42
43 private:
44 MOJO_DISALLOW_COPY_AND_ASSIGN(Environment);
45 };
46
47 } // namespace mojo
48
49 #endif // MOJO_PUBLIC_CPP_ENVIRONMENT_ENVIRONMENT_H_
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