1/*M/////////////////////////////////////////////////////////////////////////////////////// 2// 3// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4// 5// By downloading, copying, installing or using the software you agree to this license. 6// If you do not agree to this license, do not download, install, 7// copy or use the software. 8// 9// 10// Intel License Agreement 11// For Open Source Computer Vision Library 12// 13// Copyright (C) 2000, Intel Corporation, all rights reserved. 14// Third party copyrights are property of their respective owners. 15// 16// Redistribution and use in source and binary forms, with or without modification, 17// are permitted provided that the following conditions are met: 18// 19// * Redistribution's of source code must retain the above copyright notice, 20// this list of conditions and the following disclaimer. 21// 22// * Redistribution's in binary form must reproduce the above copyright notice, 23// this list of conditions and the following disclaimer in the documentation 24// and/or other materials provided with the distribution. 25// 26// * The name of Intel Corporation may not be used to endorse or promote products 27// derived from this software without specific prior written permission. 28// 29// This software is provided by the copyright holders and contributors "as is" and 30// any express or implied warranties, including, but not limited to, the implied 31// warranties of merchantability and fitness for a particular purpose are disclaimed. 32// In no event shall the Intel Corporation or contributors be liable for any direct, 33// indirect, incidental, special, exemplary, or consequential damages 34// (including, but not limited to, procurement of substitute goods or services; 35// loss of use, data, or profits; or business interruption) however caused 36// and on any theory of liability, whether in contract, strict liability, 37// or tort (including negligence or otherwise) arising in any way out of 38// the use of this software, even if advised of the possibility of such damage. 39// 40//M*/ 41 42#include "_cxcore.h" 43 44// default <malloc> 45static void* 46icvDefaultAlloc( size_t size, void* ) 47{ 48 char *ptr, *ptr0 = (char*)malloc( 49 (size_t)(size + CV_MALLOC_ALIGN*((size >= 4096) + 1) + sizeof(char*))); 50 51 if( !ptr0 ) 52 return 0; 53 54 // align the pointer 55 ptr = (char*)cvAlignPtr(ptr0 + sizeof(char*) + 1, CV_MALLOC_ALIGN); 56 *(char**)(ptr - sizeof(char*)) = ptr0; 57 58 return ptr; 59} 60 61 62// default <free> 63static int 64icvDefaultFree( void* ptr, void* ) 65{ 66 // Pointer must be aligned by CV_MALLOC_ALIGN 67 if( ((size_t)ptr & (CV_MALLOC_ALIGN-1)) != 0 ) 68 return CV_BADARG_ERR; 69 free( *((char**)ptr - 1) ); 70 71 return CV_OK; 72} 73 74 75// pointers to allocation functions, initially set to default 76static CvAllocFunc p_cvAlloc = icvDefaultAlloc; 77static CvFreeFunc p_cvFree = icvDefaultFree; 78static void* p_cvAllocUserData = 0; 79 80CV_IMPL void cvSetMemoryManager( CvAllocFunc alloc_func, CvFreeFunc free_func, void* userdata ) 81{ 82 CV_FUNCNAME( "cvSetMemoryManager" ); 83 84 __BEGIN__; 85 86 if( (alloc_func == 0) ^ (free_func == 0) ) 87 CV_ERROR( CV_StsNullPtr, "Either both pointers should be NULL or none of them"); 88 89 p_cvAlloc = alloc_func ? alloc_func : icvDefaultAlloc; 90 p_cvFree = free_func ? free_func : icvDefaultFree; 91 p_cvAllocUserData = userdata; 92 93 __END__; 94} 95 96 97CV_IMPL void* cvAlloc( size_t size ) 98{ 99 void* ptr = 0; 100 101 CV_FUNCNAME( "cvAlloc" ); 102 103 __BEGIN__; 104 105 if( (size_t)size > CV_MAX_ALLOC_SIZE ) 106 CV_ERROR( CV_StsOutOfRange, 107 "Negative or too large argument of cvAlloc function" ); 108 109 ptr = p_cvAlloc( size, p_cvAllocUserData ); 110 if( !ptr ) 111 CV_ERROR( CV_StsNoMem, "Out of memory" ); 112 113 __END__; 114 115 return ptr; 116} 117 118 119CV_IMPL void cvFree_( void* ptr ) 120{ 121 CV_FUNCNAME( "cvFree_" ); 122 123 __BEGIN__; 124 125 if( ptr ) 126 { 127 CVStatus status = p_cvFree( ptr, p_cvAllocUserData ); 128 if( status < 0 ) 129 CV_ERROR( status, "Deallocation error" ); 130 } 131 132 __END__; 133} 134 135/* End of file. */ 136