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e0fd75b5ab
This caused us to lose our gn check certification. :( Turns out gn check was just ignoring all the header paths it didn't understand and so gn check passing for sky wasn't meaning much. I tried to straighten out some of the mess in this CL, but its going to take several more rounds of massaging before gn check passes again. On the bright side (almost) all of our headers are absolute now. Turns out my script (attached to the bug) didn't notice ../ includes but I'll fix that in the next patch. R=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/746023002
122 lines
4.7 KiB
C++
122 lines
4.7 KiB
C++
/*
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* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
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* Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SharedBuffer_h
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#define SharedBuffer_h
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#include "sky/engine/platform/PlatformExport.h"
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#include "sky/engine/platform/PurgeableVector.h"
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#include "sky/engine/wtf/ArrayBuffer.h"
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#include "sky/engine/wtf/Forward.h"
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#include "sky/engine/wtf/OwnPtr.h"
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#include "sky/engine/wtf/RefCounted.h"
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#include "sky/engine/wtf/text/WTFString.h"
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#include "third_party/skia/include/core/SkData.h"
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namespace blink {
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class PLATFORM_EXPORT SharedBuffer : public RefCounted<SharedBuffer> {
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public:
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static PassRefPtr<SharedBuffer> create() { return adoptRef(new SharedBuffer); }
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static PassRefPtr<SharedBuffer> create(size_t size) { return adoptRef(new SharedBuffer(size)); }
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static PassRefPtr<SharedBuffer> create(const char* c, int i) { return adoptRef(new SharedBuffer(c, i)); }
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static PassRefPtr<SharedBuffer> create(const unsigned char* c, int i) { return adoptRef(new SharedBuffer(c, i)); }
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static PassRefPtr<SharedBuffer> createPurgeable(const char* c, int i) { return adoptRef(new SharedBuffer(c, i, PurgeableVector::Purgeable)); }
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static PassRefPtr<SharedBuffer> adoptVector(Vector<char>&);
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~SharedBuffer();
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// Calling this function will force internal segmented buffers to be merged
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// into a flat buffer. Use getSomeData() whenever possible for better
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// performance.
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const char* data() const;
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unsigned size() const;
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bool isEmpty() const { return !size(); }
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void append(PassRefPtr<SharedBuffer>);
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void append(const char*, unsigned);
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void append(const Vector<char>&);
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void clear();
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PassRefPtr<SharedBuffer> copy() const;
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// Return the number of consecutive bytes after "position". "data"
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// points to the first byte.
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// Return 0 when no more data left.
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// When extracting all data with getSomeData(), the caller should
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// repeat calling it until it returns 0.
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// Usage:
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// const char* segment;
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// unsigned pos = 0;
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// while (unsigned length = sharedBuffer->getSomeData(segment, pos)) {
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// // Use the data. for example: decoder->decode(segment, length);
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// pos += length;
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// }
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unsigned getSomeData(const char*& data, unsigned position = 0) const;
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// Creates an ArrayBuffer and copies this SharedBuffer's contents to that
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// ArrayBuffer without merging segmented buffers into a flat buffer. If
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// allocation of an ArrayBuffer fails, returns 0.
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PassRefPtr<ArrayBuffer> getAsArrayBuffer() const;
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// Creates an SkData and copies this SharedBuffer's contents to that
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// SkData without merging segmented buffers into a flat buffer.
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PassRefPtr<SkData> getAsSkData() const;
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// See PurgeableVector::lock().
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bool lock();
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// WARNING: Calling unlock() on a SharedBuffer that wasn't created with the
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// purgeability option does an extra memcpy(). Please use
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// SharedBuffer::createPurgeable() if you intend to call unlock().
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void unlock();
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bool isLocked() const;
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private:
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SharedBuffer();
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explicit SharedBuffer(size_t);
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SharedBuffer(const char*, int);
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SharedBuffer(const char*, int, PurgeableVector::PurgeableOption);
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SharedBuffer(const unsigned char*, int);
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// See SharedBuffer::data().
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void mergeSegmentsIntoBuffer() const;
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unsigned m_size;
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mutable PurgeableVector m_buffer;
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mutable Vector<char*> m_segments;
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};
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} // namespace blink
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#endif // SharedBuffer_h
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