Last change
on this file since 44897 was 44145, checked in by [email protected], 16 years ago |
JavaScriptCore:
2009-05-25 David Levin <[email protected]>
Reviewed by Maciej Stachowiak and Oliver Hunt.
https://bugs.webkit.org/show_bug.cgi?id=25126
Allow the buffer underlying UString to be shared.
In order to not grow the underlying size of any structure,
there is a union in the Rep string which holds
+ m_sharedBuffer -- a pointer to the shared ref counted buffer
if the class is BaseString and the buffer is being shared OR
+ m_baseString -- the BaseString if the class is only UString::Rep
but not a UString::BaseString
Ideally, m_sharedBuffer would be a RefPtr, but it cannot be because
it is in a union.
No change in sunspider perf.
- JavaScriptCore.vcproj/WTF/WTF.vcproj:
- JavaScriptCore.xcodeproj/project.pbxproj:
- runtime/UString.cpp:
(JSC::UString::Rep::share):
(JSC::UString::Rep::destroy):
(JSC::UString::BaseString::sharedBuffer):
(JSC::UString::BaseString::setSharedBuffer):
(JSC::UString::BaseString::slowIsBufferReadOnly):
(JSC::expandCapacity):
(JSC::UString::Rep::reserveCapacity):
(JSC::UString::expandPreCapacity):
(JSC::concatenate):
(JSC::UString::append):
- runtime/UString.h:
(JSC::UString::Rep::Rep):
(JSC::UString::Rep::):
(JSC::UString::BaseString::isShared):
(JSC::UString::BaseString::isBufferReadOnly):
(JSC::UString::Rep::baseString):
- wtf/CrossThreadRefCounted.h:
(WTF::CrossThreadRefCounted::isShared):
- wtf/OwnFastMallocPtr.h: Added.
(WTF::OwnFastMallocPtr::OwnFastMallocPtr):
(WTF::OwnFastMallocPtr::~OwnFastMallocPtr):
(WTF::OwnFastMallocPtr::get):
(WTF::OwnFastMallocPtr::release):
JavaScriptGlue:
2009-05-25 David Levin <[email protected]>
Reviewed by Maciej Stachowiak and Oliver Hunt.
https://bugs.webkit.org/show_bug.cgi?id=25126
Added forwarding headers.
- ForwardingHeaders/wtf/CrossThreadRefCounted.h: Added.
- ForwardingHeaders/wtf/OwnFastMallocPtr.h: Added.
WebCore:
2009-05-25 David Levin <[email protected]>
Reviewed by Maciej Stachowiak and Oliver Hunt.
Added forwarding headers.
- ForwardingHeaders/wtf/CrossThreadRefCounted.h: Added.
- ForwardingHeaders/wtf/OwnFastMallocPtr.h: Added.
|
File size:
1.5 KB
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1 | /*
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2 | * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
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3 | * Copyright (C) 2009 Google Inc. All rights reserved.
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4 | *
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5 | * This library is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU Library General Public
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7 | * License as published by the Free Software Foundation; either
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8 | * version 2 of the License, or (at your option) any later version.
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9 | *
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10 | * This library is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 | * Library General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU Library General Public License
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16 | * along with this library; see the file COPYING.LIB. If not, write to
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17 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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18 | * Boston, MA 02110-1301, USA.
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19 | *
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20 | */
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21 |
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22 | #ifndef OwnFastMallocPtr_h
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23 | #define OwnFastMallocPtr_h
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24 |
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25 | #include "FastMalloc.h"
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26 | #include "Noncopyable.h"
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27 |
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28 | namespace WTF {
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29 |
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30 | template<class T> class OwnFastMallocPtr : Noncopyable {
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31 | public:
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32 | explicit OwnFastMallocPtr(T* ptr) : m_ptr(ptr)
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33 | {
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34 | }
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35 |
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36 | ~OwnFastMallocPtr()
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37 | {
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38 | fastFree(m_ptr);
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39 | }
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40 |
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41 | T* get() const { return m_ptr; }
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42 | T* release() { T* ptr = m_ptr; m_ptr = 0; return ptr; }
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43 |
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44 | private:
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45 | T* m_ptr;
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46 | };
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47 |
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48 | } // namespace WTF
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49 |
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50 | using WTF::OwnFastMallocPtr;
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51 |
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52 | #endif // OwnFastMallocPtr_h
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