netwerk/base/src/AutoClose.h@b8a032363ba2 (annotated)
netwerk/base/src/AutoClose.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 5 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef mozilla_net_AutoClose_h |
| michael@0 | 8 | #define mozilla_net_AutoClose_h |
| michael@0 | 9 | |
| michael@0 | 10 | #include "nsCOMPtr.h" |
| michael@0 | 11 | |
| michael@0 | 12 | namespace mozilla { namespace net { |
| michael@0 | 13 | |
| michael@0 | 14 | // Like an nsAutoPtr for XPCOM streams (e.g. nsIAsyncInputStream) and other |
| michael@0 | 15 | // refcounted classes that need to have the Close() method called explicitly |
| michael@0 | 16 | // before they are destroyed. |
| michael@0 | 17 | template <typename T> |
| michael@0 | 18 | class AutoClose |
| michael@0 | 19 | { |
| michael@0 | 20 | public: |
| michael@0 | 21 | AutoClose() { } |
| michael@0 | 22 | ~AutoClose(){ |
| michael@0 | 23 | Close(); |
| michael@0 | 24 | } |
| michael@0 | 25 | |
| michael@0 | 26 | operator bool() const |
| michael@0 | 27 | { |
| michael@0 | 28 | return mPtr; |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | already_AddRefed<T> forget() |
| michael@0 | 32 | { |
| michael@0 | 33 | return mPtr.forget(); |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | void takeOver(nsCOMPtr<T> & rhs) |
| michael@0 | 37 | { |
| michael@0 | 38 | Close(); |
| michael@0 | 39 | mPtr = rhs.forget(); |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | void takeOver(AutoClose<T> & rhs) |
| michael@0 | 43 | { |
| michael@0 | 44 | Close(); |
| michael@0 | 45 | mPtr = rhs.mPtr.forget(); |
| michael@0 | 46 | } |
| michael@0 | 47 | |
| michael@0 | 48 | void CloseAndRelease() |
| michael@0 | 49 | { |
| michael@0 | 50 | Close(); |
| michael@0 | 51 | mPtr = nullptr; |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | T* operator->() const |
| michael@0 | 55 | { |
| michael@0 | 56 | return mPtr.operator->(); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | private: |
| michael@0 | 60 | void Close() |
| michael@0 | 61 | { |
| michael@0 | 62 | if (mPtr) { |
| michael@0 | 63 | mPtr->Close(); |
| michael@0 | 64 | } |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | void operator=(const AutoClose<T> &) MOZ_DELETE; |
| michael@0 | 68 | AutoClose(const AutoClose<T> &) MOZ_DELETE; |
| michael@0 | 69 | |
| michael@0 | 70 | nsCOMPtr<T> mPtr; |
| michael@0 | 71 | }; |
| michael@0 | 72 | |
| michael@0 | 73 | } } // namespace mozilla::net |
| michael@0 | 74 | |
| michael@0 | 75 | #endif // mozilla_net_AutoClose_h |
