| /*****************************************************************************/ |
| // 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_memory.cpp#1 $ */ |
| /* $DateTime: 2012/05/30 13:28:51 $ */ |
| /* $Change: 832332 $ */ |
| /* $Author: tknoll $ */ |
| |
| /*****************************************************************************/ |
| |
| #include "dng_memory.h" |
| |
| #include "dng_bottlenecks.h" |
| #include "dng_exceptions.h" |
| #include "dng_safe_arithmetic.h" |
| |
| /*****************************************************************************/ |
| |
| dng_memory_data::dng_memory_data () |
| |
| : fBuffer (NULL) |
| |
| { |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_memory_data::dng_memory_data (uint32 size) |
| |
| : fBuffer (NULL) |
| |
| { |
| |
| Allocate (size); |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_memory_data::dng_memory_data (uint32 count, std::size_t elementSize) |
| |
| : fBuffer (NULL) |
| |
| { |
| |
| Allocate (count, elementSize); |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_memory_data::~dng_memory_data () |
| { |
| |
| Clear (); |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| void dng_memory_data::Allocate (uint32 size) |
| { |
| |
| Clear (); |
| |
| if (size) |
| { |
| |
| fBuffer = (char*)malloc (size); |
| |
| if (!fBuffer) |
| { |
| |
| ThrowMemoryFull (); |
| |
| } |
| |
| } |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| void dng_memory_data::Allocate (uint32 count, std::size_t elementSize) |
| { |
| |
| // Convert elementSize to a uint32. |
| const uint32 elementSizeAsUint32 = static_cast<uint32> (elementSize); |
| if (static_cast<std::size_t> (elementSizeAsUint32) != elementSize) |
| { |
| ThrowMemoryFull(); |
| } |
| |
| // Compute required number of bytes and allocate memory. |
| uint32 numBytes; |
| if (!SafeUint32Mult(count, elementSizeAsUint32, &numBytes)) |
| { |
| ThrowMemoryFull(); |
| } |
| Allocate(numBytes); |
| |
| } |
| |
| void dng_memory_data::Clear () |
| { |
| |
| if (fBuffer) |
| { |
| |
| free (fBuffer); |
| |
| fBuffer = NULL; |
| |
| } |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_memory_block * dng_memory_block::Clone (dng_memory_allocator &allocator) const |
| { |
| |
| uint32 size = LogicalSize (); |
| |
| dng_memory_block * result = allocator.Allocate (size); |
| |
| DoCopyBytes (Buffer (), result->Buffer (), size); |
| |
| return result; |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| class dng_malloc_block : public dng_memory_block |
| { |
| |
| private: |
| |
| void *fMalloc; |
| |
| public: |
| |
| dng_malloc_block (uint32 logicalSize); |
| |
| virtual ~dng_malloc_block (); |
| |
| private: |
| |
| // Hidden copy constructor and assignment operator. |
| |
| dng_malloc_block (const dng_malloc_block &block); |
| |
| dng_malloc_block & operator= (const dng_malloc_block &block); |
| |
| }; |
| |
| /*****************************************************************************/ |
| |
| dng_malloc_block::dng_malloc_block (uint32 logicalSize) |
| |
| : dng_memory_block (logicalSize) |
| |
| , fMalloc (NULL) |
| |
| { |
| |
| #if (qLinux && !defined(__ANDROID_API__)) || (defined(__ANDROID_API__) && __ANDROID_API__ >= 17) |
| |
| int err = ::posix_memalign( (void **) &fMalloc, 16, (size_t) PhysicalSize() ); |
| |
| if (err) |
| { |
| |
| ThrowMemoryFull (); |
| |
| } |
| |
| #else |
| |
| fMalloc = (char*)malloc (PhysicalSize ()); |
| |
| if (!fMalloc) |
| { |
| |
| ThrowMemoryFull (); |
| |
| } |
| |
| #endif |
| |
| SetBuffer (fMalloc); |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_malloc_block::~dng_malloc_block () |
| { |
| |
| if (fMalloc) |
| { |
| |
| free (fMalloc); |
| |
| } |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_memory_block * dng_memory_allocator::Allocate (uint32 size) |
| { |
| |
| dng_memory_block *result = new dng_malloc_block (size); |
| |
| if (!result) |
| { |
| |
| ThrowMemoryFull (); |
| |
| } |
| |
| return result; |
| |
| } |
| |
| /*****************************************************************************/ |
| |
| dng_memory_allocator gDefaultDNGMemoryAllocator; |
| |
| /*****************************************************************************/ |