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Backout bug 299992 - too much odd platform-specific bustage
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bsmedberg%covad.net
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62
xpcom/ds/nsDataHashtable.h
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62
xpcom/ds/nsDataHashtable.h
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is C++ hashtable templates.
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*
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* The Initial Developer of the Original Code is
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* Benjamin Smedberg.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsDataHashtable_h__
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#define nsDataHashtable_h__
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#include "nsHashKeys.h"
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#include "nsBaseHashtable.h"
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/**
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* templated hashtable class maps keys to simple datatypes.
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* See nsBaseHashtable for complete declaration
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* @param KeyClass a wrapper-class for the hashtable key, see nsHashKeys.h
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* for a complete specification.
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* @param DataType the simple datatype being wrapped
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* @see nsInterfaceHashtable, nsClassHashtable
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*/
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template<class KeyClass,class DataType>
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class nsDataHashtable :
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public nsBaseHashtable<KeyClass,DataType,DataType>
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{ };
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template<class KeyClass,class DataType>
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class nsDataHashtableMT :
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public nsBaseHashtableMT<KeyClass,DataType,DataType>
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{ };
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#endif // nsDataHashtable_h__
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197
xpcom/ds/nsRefPtrHashtable.h
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197
xpcom/ds/nsRefPtrHashtable.h
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@ -0,0 +1,197 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is C++ hashtable templates.
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*
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* The Initial Developer of the Original Code is
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* Benjamin Smedberg.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Neil Rashbrook <neil@parkwaycc.co.uk>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsRefPtrHashtable_h__
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#define nsRefPtrHashtable_h__
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#include "nsBaseHashtable.h"
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#include "nsHashKeys.h"
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#include "nsAutoPtr.h"
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/**
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* templated hashtable class maps keys to reference pointers.
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* See nsBaseHashtable for complete declaration.
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* @param KeyClass a wrapper-class for the hashtable key, see nsHashKeys.h
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* for a complete specification.
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* @param RefPtr the reference-type being wrapped
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* @see nsDataHashtable, nsClassHashtable
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*/
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template<class KeyClass, class RefPtr>
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class nsRefPtrHashtable :
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public nsBaseHashtable< KeyClass, nsRefPtr<RefPtr> , RefPtr* >
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{
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public:
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typedef typename KeyClass::KeyType KeyType;
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typedef RefPtr* UserDataType;
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/**
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* @copydoc nsBaseHashtable::Get
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* @param pData This is an XPCOM getter, so pData is already_addrefed.
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* If the key doesn't exist, pData will be set to nsnull.
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*/
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PRBool Get(KeyType aKey, UserDataType* pData) const;
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/**
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* Gets a weak reference to the hashtable entry.
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* @param aFound If not nsnull, will be set to PR_TRUE if the entry is found,
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* to PR_FALSE otherwise.
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* @return The entry, or nsnull if not found. Do not release this pointer!
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*/
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RefPtr* GetWeak(KeyType aKey, PRBool* aFound = nsnull) const;
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};
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/**
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* Thread-safe version of nsRefPtrHashtable
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* @param KeyClass a wrapper-class for the hashtable key, see nsHashKeys.h
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* for a complete specification.
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* @param RefPtr the reference-type being wrapped
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*/
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template<class KeyClass, class RefPtr>
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class nsRefPtrHashtableMT :
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public nsBaseHashtableMT< KeyClass, nsRefPtr<RefPtr> , RefPtr* >
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{
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public:
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typedef typename KeyClass::KeyType KeyType;
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typedef RefPtr* UserDataType;
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/**
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* @copydoc nsBaseHashtable::Get
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* @param pData This is an XPCOM getter, so pData is already_addrefed.
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* If the key doesn't exist, pData will be set to nsnull.
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*/
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PRBool Get(KeyType aKey, UserDataType* pData) const;
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// GetWeak does not make sense on a multi-threaded hashtable, where another
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// thread may remove the entry (and hence release it) as soon as GetWeak
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// returns
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};
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//
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// nsRefPtrHashtable definitions
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//
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template<class KeyClass, class RefPtr>
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PRBool
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nsRefPtrHashtable<KeyClass,RefPtr>::Get
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(KeyType aKey, UserDataType* pRefPtr) const
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{
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typename nsBaseHashtable<KeyClass, nsRefPtr<RefPtr>, RefPtr*>::EntryType* ent =
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GetEntry(aKey);
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if (ent)
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{
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if (pRefPtr)
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{
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*pRefPtr = ent->mData;
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NS_IF_ADDREF(*pRefPtr);
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}
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return PR_TRUE;
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}
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// if the key doesn't exist, set *pRefPtr to null
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// so that it is a valid XPCOM getter
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if (pRefPtr)
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*pRefPtr = nsnull;
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return PR_FALSE;
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}
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template<class KeyClass, class RefPtr>
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RefPtr*
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nsRefPtrHashtable<KeyClass,RefPtr>::GetWeak
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(KeyType aKey, PRBool* aFound) const
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{
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typename nsBaseHashtable<KeyClass, nsRefPtr<RefPtr>, RefPtr*>::EntryType* ent =
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GetEntry(aKey);
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if (ent)
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{
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if (aFound)
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*aFound = PR_TRUE;
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return ent->mData;
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}
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// Key does not exist, return nsnull and set aFound to PR_FALSE
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if (aFound)
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*aFound = PR_FALSE;
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return nsnull;
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}
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//
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// nsRefPtrHashtableMT definitions
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//
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template<class KeyClass, class RefPtr>
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PRBool
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nsRefPtrHashtableMT<KeyClass,RefPtr>::Get
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(KeyType aKey, UserDataType* pRefPtr) const
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{
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PR_Lock(this->mLock);
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typename nsBaseHashtableMT<KeyClass, nsRefPtr<RefPtr>, RefPtr*>::EntryType* ent =
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GetEntry(aKey);
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if (ent)
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{
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if (pRefPtr)
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{
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*pRefPtr = ent->mData;
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NS_IF_ADDREF(*pRefPtr);
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}
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PR_Unlock(this->mLock);
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return PR_TRUE;
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}
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// if the key doesn't exist, set *pRefPtr to null
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// so that it is a valid XPCOM getter
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if (pRefPtr)
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*pRefPtr = nsnull;
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PR_Unlock(this->mLock);
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return PR_FALSE;
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}
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#endif // nsRefPtrHashtable_h__
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