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comparison packages/language/c/libc/current/src/stdlib/malloc.cxx @ 2:443894e2e912 ecos-v1_2_1-release

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Block commit of eCos version 1.2.1
author jlarmour
date Tue, 11 May 1999 12:24:34 +0000
parents 3111d98ba7b3
children e97d78785e2d
comparison
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1:72f549f0d891 2:443894e2e912
1 //======================================================================== 1 //========================================================================
2 // 2 //
3 // malloc.cxx 3 // malloc.cxx
4 // 4 //
5 // Implementation of ANSI standard allocation routines 5 // Implementation of ISO C memory allocation routines
6 // 6 //
7 //======================================================================== 7 //========================================================================
8 //####COPYRIGHTBEGIN#### 8 //####COPYRIGHTBEGIN####
9 // 9 //
10 // ------------------------------------------- 10 // -------------------------------------------
20 // 20 //
21 // The Original Code is eCos - Embedded Cygnus Operating System, released 21 // The Original Code is eCos - Embedded Cygnus Operating System, released
22 // September 30, 1998. 22 // September 30, 1998.
23 // 23 //
24 // The Initial Developer of the Original Code is Cygnus. Portions created 24 // The Initial Developer of the Original Code is Cygnus. Portions created
25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. 25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
26 // ------------------------------------------- 26 // -------------------------------------------
27 // 27 //
28 //####COPYRIGHTEND#### 28 //####COPYRIGHTEND####
29 //======================================================================== 29 //========================================================================
30 //#####DESCRIPTIONBEGIN#### 30 //#####DESCRIPTIONBEGIN####
31 // 31 //
32 // Author(s): jlarmour@cygnus.co.uk 32 // Author(s): jlarmour
33 // Contributors: jlarmour@cygnus.co.uk 33 // Contributors: jlarmour
34 // Date: 1998-02-13 34 // Date: 1999-01-21
35 // Purpose: 35 // Purpose: Provides ISO C calloc(), malloc(), realloc() and free()
36 // Description: Implementation of ANSI standard allocation routines as per 36 // functions
37 // ANSI section 7.10.3 37 // Description: Implementation of ANSI standard allocation routines as per
38 // ISO C section 7.10.3
38 // Usage: 39 // Usage:
39 // 40 //
40 //####DESCRIPTIONEND#### 41 //####DESCRIPTIONEND####
41 // 42 //
42 //======================================================================== 43 //========================================================================
43 44
44 // CONFIGURATION 45 // CONFIGURATION
45 46
46 #include <pkgconf/libc.h> // Configuration header 47 #include <pkgconf/libc.h> // Configuration header
47 48
48 // Include the C library? 49 // Do we want these functions?
49 #ifdef CYGPKG_LIBC
50
51 // And do we want these functions?
52 #ifdef CYGPKG_LIBC_MALLOC 50 #ifdef CYGPKG_LIBC_MALLOC
53 51
54 // INCLUDES 52 // INCLUDES
55 53
56 #include <cyg/infra/cyg_type.h> // Common type definitions and support 54 #include <cyg/infra/cyg_type.h> // Common type definitions and support
57 #include <cyg/infra/cyg_trac.h> // Common tracing support 55 #include <cyg/infra/cyg_trac.h> // Common tracing support
58 #include <cyg/infra/cyg_ass.h> // Common assertion support 56 #include <cyg/infra/cyg_ass.h> // Common assertion support
59 #include <string.h> // For memset() and memcpy() 57 #include <string.h> // For memset() and memcpy()
60 #include <stdlib.h> // header for this file 58 #include <stdlib.h> // header for this file
59 #include <pkgconf/kernel.h> // kernel configuration
61 #include <cyg/kernel/memvar.hxx> // Kernel variable size block allocator 60 #include <cyg/kernel/memvar.hxx> // Kernel variable size block allocator
62 61
63 #include "clibincl/stdlibsupp.hxx" // Additional support for stdlib stuff 62 #include "clibincl/stdlibsupp.hxx" // Additional support for stdlib stuff
64 // internal to the C library 63 // internal to the C library
65 64
66 // EXPORTED SYMBOLS 65 // EXPORTED SYMBOLS
67 66
68 externC void * 67 externC void *
69 calloc( size_t, size_t ) CYGPRI_LIBC_WEAK_ALIAS("_calloc"); 68 calloc( size_t, size_t ) CYGBLD_ATTRIB_WEAK_ALIAS(_calloc);
70 69
71 externC void 70 externC void
72 free( void * ) CYGPRI_LIBC_WEAK_ALIAS("_free"); 71 free( void * ) CYGBLD_ATTRIB_WEAK_ALIAS(_free);
73 72
74 externC void * 73 externC void *
75 malloc( size_t ) CYGPRI_LIBC_WEAK_ALIAS("_malloc"); 74 malloc( size_t ) CYGBLD_ATTRIB_WEAK_ALIAS(_malloc);
76 75
77 externC void * 76 externC void *
78 realloc( void *, size_t ) CYGPRI_LIBC_WEAK_ALIAS("_realloc"); 77 realloc( void *, size_t ) CYGBLD_ATTRIB_WEAK_ALIAS(_realloc);
79 78
80 79
81 // STATIC VARIABLES 80 // STATIC VARIABLES
82 81
83 // the data space for the memory pool 82 // the data space for the memory pool - can be externally overriden
84 static cyg_uint8 pooldata[ CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE ]; 83 // FIXME: but should be in different file for this to work
84 cyg_uint8 cyg_libc_malloc_memorypool[ CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE ]
85 CYGBLD_ATTRIB_WEAK;
85 86
86 // the memory pool object itself 87 // the memory pool object itself
87 static Cyg_Mempool_Variable pool CYG_INIT_PRIORITY( LIBC ) = 88 static Cyg_Mempool_Variable pool CYG_INIT_PRIORITY( LIBC ) =
88 Cyg_Mempool_Variable( pooldata, CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE ); 89 Cyg_Mempool_Variable( cyg_libc_malloc_memorypool,
90 CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE );
89 91
90 92
91 // FUNCTIONS 93 // FUNCTIONS
92 94
93 void * 95 void *
216 return ret_ptr; 218 return ret_ptr;
217 } // _realloc() 219 } // _realloc()
218 220
219 #endif // ifdef CYGPKG_LIBC_MALLOC 221 #endif // ifdef CYGPKG_LIBC_MALLOC
220 222
221 #endif // ifdef CYGPKG_LIBC
222
223 // EOF malloc.cxx 223 // EOF malloc.cxx