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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
commit | f8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch) | |
tree | 26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/libs/xpcom18a4/xpcom/ds/nsAtomTable.h | |
parent | Initial commit. (diff) | |
download | virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.tar.xz virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.zip |
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/ds/nsAtomTable.h')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/ds/nsAtomTable.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/ds/nsAtomTable.h b/src/libs/xpcom18a4/xpcom/ds/nsAtomTable.h new file mode 100644 index 00000000..d8971cf7 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/ds/nsAtomTable.h @@ -0,0 +1,101 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is mozilla.org code. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#ifndef nsAtomTable_h__ +#define nsAtomTable_h__ + +#include "nsIAtom.h" + +/** + * A threadsafely-refcounted implementation of nsIAtom. Note that + * AtomImpl objects are sometimes converted into PermanentAtomImpl + * objects using placement new and just overwriting the vtable pointer. + */ + +class AtomImpl : public nsIAtom { +public: + AtomImpl(); + +protected: + // We don't need a virtual destructor here because PermanentAtomImpl + // deletions aren't handled through Release(). + ~AtomImpl(); + +public: + NS_DECL_ISUPPORTS + NS_DECL_NSIATOM + + virtual PRBool IsPermanent(); + + void* operator new(size_t size, const nsACString& aString) CPP_THROW_NEW; + + void operator delete(void* ptr) { + ::operator delete(ptr); + } + + // for |#ifdef NS_BUILD_REFCNT_LOGGING| access to reference count + nsrefcnt GetRefCount() { return mRefCnt; } + + // Actually more; 0 terminated. This slot is reserved for the + // terminating zero. + char mString[1]; +}; + +/** + * A non-refcounted implementation of nsIAtom. + */ + +class PermanentAtomImpl : public AtomImpl { +public: +#ifdef AIX + PermanentAtomImpl() : AtomImpl() {} +#endif + NS_IMETHOD_(nsrefcnt) AddRef(); + NS_IMETHOD_(nsrefcnt) Release(); + + virtual PRBool IsPermanent(); + + void* operator new(size_t size, const nsACString& aString) CPP_THROW_NEW { + return AtomImpl::operator new(size, aString); + } + void* operator new(size_t size, AtomImpl* aAtom) CPP_THROW_NEW; + +}; + +void NS_PurgeAtomTable(); + +#endif // nsAtomTable_h__ |