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Side by Side Diff: base/callback_internal.h

Issue 6729002: Base: A few more files using BASE_API (for base.dll) (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: Created 9 years, 9 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 // This file contains utility functions and classes that help the 5 // This file contains utility functions and classes that help the
6 // implementation, and management of the Callback objects. 6 // implementation, and management of the Callback objects.
7 7
8 #ifndef BASE_CALLBACK_INTERNAL_H_ 8 #ifndef BASE_CALLBACK_INTERNAL_H_
9 #define BASE_CALLBACK_INTERNAL_H_ 9 #define BASE_CALLBACK_INTERNAL_H_
10 #pragma once 10 #pragma once
11 11
12 #include "base/base_api.h"
12 #include "base/ref_counted.h" 13 #include "base/ref_counted.h"
13 14
14 namespace base { 15 namespace base {
15 namespace internal { 16 namespace internal {
16 17
17 // InvokerStorageBase is used to provide an opaque handle that the Callback 18 // InvokerStorageBase is used to provide an opaque handle that the Callback
18 // class can use to represent a function object with bound arguments. It 19 // class can use to represent a function object with bound arguments. It
19 // behaves as an existential type that is used by a corresponding 20 // behaves as an existential type that is used by a corresponding
20 // DoInvoke function to perform the function execution. This allows 21 // DoInvoke function to perform the function execution. This allows
21 // us to shield the Callback class from the types of the bound argument via 22 // us to shield the Callback class from the types of the bound argument via
(...skipping 22 matching lines...) Expand all
44 mutable scoped_refptr<InvokerStorageBase> invoker_storage_; 45 mutable scoped_refptr<InvokerStorageBase> invoker_storage_;
45 }; 46 };
46 47
47 template <typename T> 48 template <typename T>
48 InvokerStorageHolder<T> MakeInvokerStorageHolder(T* o) { 49 InvokerStorageHolder<T> MakeInvokerStorageHolder(T* o) {
49 return InvokerStorageHolder<T>(o); 50 return InvokerStorageHolder<T>(o);
50 } 51 }
51 52
52 // Holds the Callback methods that don't require specialization to reduce 53 // Holds the Callback methods that don't require specialization to reduce
53 // template bloat. 54 // template bloat.
54 class CallbackBase { 55 class BASE_API CallbackBase {
55 public: 56 public:
56 // Returns true if Callback is null (doesn't refer to anything). 57 // Returns true if Callback is null (doesn't refer to anything).
57 bool is_null() const; 58 bool is_null() const;
58 59
59 // Returns the Callback into an uninitalized state. 60 // Returns the Callback into an uninitalized state.
60 void Reset(); 61 void Reset();
61 62
62 bool Equals(const CallbackBase& other) const; 63 bool Equals(const CallbackBase& other) const;
63 64
64 protected: 65 protected:
(...skipping 12 matching lines...) Expand all
77 ~CallbackBase(); 78 ~CallbackBase();
78 79
79 scoped_refptr<InvokerStorageBase> invoker_storage_; 80 scoped_refptr<InvokerStorageBase> invoker_storage_;
80 InvokeFuncStorage polymorphic_invoke_; 81 InvokeFuncStorage polymorphic_invoke_;
81 }; 82 };
82 83
83 } // namespace internal 84 } // namespace internal
84 } // namespace base 85 } // namespace base
85 86
86 #endif // BASE_CALLBACK_INTERNAL_H_ 87 #endif // BASE_CALLBACK_INTERNAL_H_
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