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// =================================================================================================
// Copyright Adobe
// Copyright 2015 Adobe
// 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. If you have received this file from a source other
// than Adobe, then your use, modification, or distribution of it requires the prior written permission
// of Adobe.
// =================================================================================================
#define IMPLEMENTATION_HEADERS_CAN_BE_INCLUDED 1
#include "XMPCommon/ImplHeaders/MemoryAllocatorWrapperImpl.h"
#undef IMPLEMENTATION_HEADERS_CAN_BE_INCLUDED
#include <cstdlib>
namespace XMP_COMPONENT_INT_NAMESPACE {
using AdobeXMPCommon::sizet;
static const size_t kSIZE_OF_POINTER = sizeof( void * );
static const size_t kOFFSET = ( ( kSIZE_OF_POINTER + sizeof( sizet ) - 1 ) / sizeof( sizet ) )
* sizeof( sizet );
MemoryAllocatorWrapperImpl::MemoryAllocatorWrapperImpl()
: mpMemoryAllocator( NULL ) { }
AdobeXMPCommon::pIMemoryAllocator_base MemoryAllocatorWrapperImpl::SetMemoryAllocator( pIMemoryAllocator_base memoryAllocator ) {
auto retValue = mpMemoryAllocator;
mpMemoryAllocator = memoryAllocator;
return retValue;
}
void * APICALL MemoryAllocatorWrapperImpl::allocate( sizet size ) __NOTHROW__ {
size_t actualSize = size + kOFFSET;
void * memPtr = NULL;
if ( mpMemoryAllocator )
memPtr = mpMemoryAllocator->allocate( actualSize );
else
memPtr = malloc( actualSize );
if ( memPtr ) {
IMemoryAllocator ** address = ( IMemoryAllocator ** ) memPtr;
*address = mpMemoryAllocator;
return ( XMP_Uns8 * ) memPtr + kOFFSET;
}
return NULL;
}
void APICALL MemoryAllocatorWrapperImpl::deallocate( void * ptr ) __NOTHROW__ {
void * actualMemPtr = ( XMP_Uns8 * ) ptr - kOFFSET;
pIMemoryAllocator allocator = *( ( IMemoryAllocator ** ) actualMemPtr );
if ( allocator )
allocator->deallocate( actualMemPtr );
else
free( actualMemPtr );
}
void * APICALL MemoryAllocatorWrapperImpl::reallocate( void * ptr, sizet size ) __NOTHROW__ {
size_t actualSize = size + kOFFSET;
void * actualMemPtr = ( XMP_Uns8 * ) ptr - kOFFSET;
void * memPtr( NULL );
if ( mpMemoryAllocator )
memPtr = mpMemoryAllocator->reallocate( actualMemPtr, actualSize );
else
memPtr = realloc( actualMemPtr, actualSize );
if ( memPtr ) {
IMemoryAllocator ** address = ( IMemoryAllocator ** ) memPtr;
*address = mpMemoryAllocator;
return ( XMP_Uns8 * ) memPtr + kOFFSET;
}
return NULL;
}
}
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