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Diffstat (limited to 'include/EASTL/internal/enable_shared.h')
| -rw-r--r-- | include/EASTL/internal/enable_shared.h | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/include/EASTL/internal/enable_shared.h b/include/EASTL/internal/enable_shared.h deleted file mode 100644 index ac5f072..0000000 --- a/include/EASTL/internal/enable_shared.h +++ /dev/null @@ -1,83 +0,0 @@ -///////////////////////////////////////////////////////////////////////////// -// Copyright (c) Electronic Arts Inc. All rights reserved. -///////////////////////////////////////////////////////////////////////////// - - -#ifndef EASTL_INTERNAL_ENABLE_SHARED_H -#define EASTL_INTERNAL_ENABLE_SHARED_H - - -#include <EABase/eabase.h> -#if defined(EA_PRAGMA_ONCE_SUPPORTED) - #pragma once -#endif - -namespace eastl -{ - - /// enable_shared_from_this - /// - /// This is a helper mixin class that allows you to make any class - /// export a shared_ptr instance that is associated with the class - /// instance. Any class that inherits from this class gets two functions: - /// shared_ptr<T> shared_from_this(); - /// shared_ptr<T> shared_from_this() const; - /// If you call shared_from_this, you get back a shared_ptr that - /// refers to the class. A second call to shared_from_this returns - /// another shared_ptr that is shared with the first one. - /// - /// The trick that happens which is not so obvious here (and which is - /// not mentioned at all in the Boost documentation of their version - /// of this) is that the shared_ptr constructor detects that the - /// class has an enable_shared_from_this mixin and sets up this system - /// automatically for the user. This is done with template tricks. - /// - /// For some additional explanation, see the Boost documentation for - /// their description of their version of enable_shared_from_this. - /// - template <typename T> - class enable_shared_from_this - { - public: - shared_ptr<T> shared_from_this() - { return shared_ptr<T>(mWeakPtr); } - - shared_ptr<const T> shared_from_this() const - { return shared_ptr<const T>(mWeakPtr); } - - weak_ptr<T> weak_from_this() - { return mWeakPtr; } - - weak_ptr<const T> weak_from_this() const - { return mWeakPtr; } - - public: // This is public because the alternative fails on some compilers that we need to support. - mutable weak_ptr<T> mWeakPtr; - - protected: - template <typename U> friend class shared_ptr; - - EA_CONSTEXPR enable_shared_from_this() EA_NOEXCEPT - { } - - enable_shared_from_this(const enable_shared_from_this&) EA_NOEXCEPT - { } - - enable_shared_from_this& operator=(const enable_shared_from_this&) EA_NOEXCEPT - { return *this; } - - ~enable_shared_from_this() - { } - - }; // enable_shared_from_this - -} // namespace eastl - - -#endif // Header include guard - - - - - - |