diff options
Diffstat (limited to 'source/dng_ref_counted_block.cpp')
| -rw-r--r-- | source/dng_ref_counted_block.cpp | 374 |
1 files changed, 187 insertions, 187 deletions
diff --git a/source/dng_ref_counted_block.cpp b/source/dng_ref_counted_block.cpp index d3e027b..0bd03ca 100644 --- a/source/dng_ref_counted_block.cpp +++ b/source/dng_ref_counted_block.cpp @@ -1,187 +1,187 @@ -/*****************************************************************************/
-// Copyright 2006 Adobe Systems Incorporated
-// All Rights Reserved.
-//
-// NOTICE: Adobe permits you to use, modify, and distribute this file in
-// accordance with the terms of the Adobe license agreement accompanying it.
-/*****************************************************************************/
-
-/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_ref_counted_block.cpp#1 $ */
-/* $DateTime: 2012/05/30 13:28:51 $ */
-/* $Change: 832332 $ */
-/* $Author: tknoll $ */
-
-/*****************************************************************************/
-
-#include <new>
-
-#include "dng_ref_counted_block.h"
-
-#include "dng_exceptions.h"
-
-/*****************************************************************************/
-
-dng_ref_counted_block::dng_ref_counted_block ()
-
- : fBuffer (NULL)
-
- {
-
- }
-
-/*****************************************************************************/
-
-dng_ref_counted_block::dng_ref_counted_block (uint32 size)
-
- : fBuffer (NULL)
-
- {
-
- Allocate (size);
-
- }
-
-/*****************************************************************************/
-
-dng_ref_counted_block::~dng_ref_counted_block ()
- {
-
- Clear ();
-
- }
-
-/*****************************************************************************/
-
-void dng_ref_counted_block::Allocate (uint32 size)
- {
-
- Clear ();
-
- if (size)
- {
-
- fBuffer = malloc (size + sizeof (header));
-
- if (!fBuffer)
- {
-
- ThrowMemoryFull ();
-
- }
-
- new (fBuffer) header (size);
-
- }
-
- }
-
-/*****************************************************************************/
-
-void dng_ref_counted_block::Clear ()
- {
-
- if (fBuffer)
- {
-
-
- bool doFree = false;
-
- header *blockHeader = (struct header *)fBuffer;
-
- {
-
- dng_lock_mutex lock (&blockHeader->fMutex);
-
- if (--blockHeader->fRefCount == 0)
- doFree = true;
- }
-
- if (doFree)
- {
-
- blockHeader->~header ();
-
- free (fBuffer);
-
- }
-
- fBuffer = NULL;
-
- }
-
- }
-
-/*****************************************************************************/
-
-dng_ref_counted_block::dng_ref_counted_block (const dng_ref_counted_block &data)
- : fBuffer (NULL)
- {
-
- header *blockHeader = (struct header *)data.fBuffer;
-
- dng_lock_mutex lock (&blockHeader->fMutex);
-
- blockHeader->fRefCount++;
-
- fBuffer = blockHeader;
-
- }
-
-/*****************************************************************************/
-
-dng_ref_counted_block & dng_ref_counted_block::operator= (const dng_ref_counted_block &data)
- {
-
- if (this != &data)
- {
- Clear ();
-
- header *blockHeader = (struct header *)data.fBuffer;
-
- dng_lock_mutex lock (&blockHeader->fMutex);
-
- blockHeader->fRefCount++;
-
- fBuffer = blockHeader;
-
- }
-
- return *this;
-
- }
-
-/*****************************************************************************/
-
-void dng_ref_counted_block::EnsureWriteable ()
- {
-
- if (fBuffer)
- {
-
- header *possiblySharedHeader = (header *)fBuffer;
-
- {
-
- dng_lock_mutex lock (&possiblySharedHeader->fMutex);
-
- if (possiblySharedHeader->fRefCount > 1)
- {
-
- fBuffer = NULL;
-
- Allocate ((uint32)possiblySharedHeader->fSize);
-
- memcpy (Buffer (),
- ((char *)possiblySharedHeader) + sizeof (struct header), // could just do + 1 w/o cast, but this makes the type mixing more explicit
- possiblySharedHeader->fSize);
-
- possiblySharedHeader->fRefCount--;
-
- }
-
- }
-
- }
- }
-
-/*****************************************************************************/
+/*****************************************************************************/ +// Copyright 2006 Adobe Systems Incorporated +// All Rights Reserved. +// +// NOTICE: Adobe permits you to use, modify, and distribute this file in +// accordance with the terms of the Adobe license agreement accompanying it. +/*****************************************************************************/ + +/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_ref_counted_block.cpp#1 $ */ +/* $DateTime: 2012/05/30 13:28:51 $ */ +/* $Change: 832332 $ */ +/* $Author: tknoll $ */ + +/*****************************************************************************/ + +#include <new> + +#include "dng_ref_counted_block.h" + +#include "dng_exceptions.h" + +/*****************************************************************************/ + +dng_ref_counted_block::dng_ref_counted_block () + + : fBuffer (NULL) + + { + + } + +/*****************************************************************************/ + +dng_ref_counted_block::dng_ref_counted_block (uint32 size) + + : fBuffer (NULL) + + { + + Allocate (size); + + } + +/*****************************************************************************/ + +dng_ref_counted_block::~dng_ref_counted_block () + { + + Clear (); + + } + +/*****************************************************************************/ + +void dng_ref_counted_block::Allocate (uint32 size) + { + + Clear (); + + if (size) + { + + fBuffer = malloc (size + sizeof (header)); + + if (!fBuffer) + { + + ThrowMemoryFull (); + + } + + new (fBuffer) header (size); + + } + + } + +/*****************************************************************************/ + +void dng_ref_counted_block::Clear () + { + + if (fBuffer) + { + + + bool doFree = false; + + header *blockHeader = (struct header *)fBuffer; + + { + + dng_lock_mutex lock (&blockHeader->fMutex); + + if (--blockHeader->fRefCount == 0) + doFree = true; + } + + if (doFree) + { + + blockHeader->~header (); + + free (fBuffer); + + } + + fBuffer = NULL; + + } + + } + +/*****************************************************************************/ + +dng_ref_counted_block::dng_ref_counted_block (const dng_ref_counted_block &data) + : fBuffer (NULL) + { + + header *blockHeader = (struct header *)data.fBuffer; + + dng_lock_mutex lock (&blockHeader->fMutex); + + blockHeader->fRefCount++; + + fBuffer = blockHeader; + + } + +/*****************************************************************************/ + +dng_ref_counted_block & dng_ref_counted_block::operator= (const dng_ref_counted_block &data) + { + + if (this != &data) + { + Clear (); + + header *blockHeader = (struct header *)data.fBuffer; + + dng_lock_mutex lock (&blockHeader->fMutex); + + blockHeader->fRefCount++; + + fBuffer = blockHeader; + + } + + return *this; + + } + +/*****************************************************************************/ + +void dng_ref_counted_block::EnsureWriteable () + { + + if (fBuffer) + { + + header *possiblySharedHeader = (header *)fBuffer; + + { + + dng_lock_mutex lock (&possiblySharedHeader->fMutex); + + if (possiblySharedHeader->fRefCount > 1) + { + + fBuffer = NULL; + + Allocate ((uint32)possiblySharedHeader->fSize); + + memcpy (Buffer (), + ((char *)possiblySharedHeader) + sizeof (struct header), // could just do + 1 w/o cast, but this makes the type mixing more explicit + possiblySharedHeader->fSize); + + possiblySharedHeader->fRefCount--; + + } + + } + + } + } + +/*****************************************************************************/ |