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> 45 static void* 46 icvDefaultAlloc( 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> 63 static int 64 icvDefaultFree( 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 76 static CvAllocFunc p_cvAlloc = icvDefaultAlloc; 77 static CvFreeFunc p_cvFree = icvDefaultFree; 78 static void* p_cvAllocUserData = 0; 79 80 CV_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 97 CV_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 } 117 118 119 CV_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
