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annotate packages/services/memalloc/common/current/include/common.hxx @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #ifndef CYGONCE_MEMALLOC_COMMON_HXX
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2 #define CYGONCE_MEMALLOC_COMMON_HXX
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3
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4 /*==========================================================================
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5 //
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6 // common.hxx
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7 //
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8 // Shared definitions used by memory allocators
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9 //
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10 //==========================================================================
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11 // ####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later
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19 // version.
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20 //
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21 // eCos is distributed in the hope that it will be useful, but WITHOUT
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22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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24 // for more details.
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25 //
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26 // You should have received a copy of the GNU General Public License
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27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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29 //
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30 // As a special exception, if other files instantiate templates or use
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31 // macros or inline functions from this file, or you compile this file
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32 // and link it with other works to produce a work based on this file,
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33 // this file does not by itself cause the resulting work to be covered by
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34 // the GNU General Public License. However the source code for this file
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35 // must still be made available in accordance with section (3) of the GNU
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36 // General Public License v2.
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37 //
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38 // This exception does not invalidate any other reasons why a work based
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39 // on this file might be covered by the GNU General Public License.
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40 // -------------------------------------------
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41 // ####ECOSGPLCOPYRIGHTEND####
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42 //==========================================================================
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43 //#####DESCRIPTIONBEGIN####
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44 //
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45 // Author(s): jlarmour
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46 // Contributors:
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47 // Date: 2000-06-12
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48 // Purpose: Shared definitions used by memory allocators
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49 // Description:
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50 // Usage: #include <cyg/memalloc/common.hxx>
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51 //
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52 //
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53 //####DESCRIPTIONEND####
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54 //
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55 //========================================================================*/
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56
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57 /* CONFIGURATION */
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58
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59 #include <pkgconf/memalloc.h>
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60
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61 /* TYPE DEFINITIONS */
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62
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63 // struct Cyg_Mempool_Status is returned by the get_status() method of
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64 // standard eCos memory allocators. After return from get_status(), any
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65 // field of type T may be set to ((T)-1) to indicate that the information
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66 // is not available or not applicable to this allocator.
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67
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68
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69 class Cyg_Mempool_Status {
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70 public:
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71 const cyg_uint8 *arenabase; // base address of entire pool
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72 cyg_int32 arenasize; // total size of entire pool
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73 cyg_int32 freeblocks; // number of chunks free for use
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74 cyg_int32 totalallocated; // total allocated space in bytes
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75 cyg_int32 totalfree; // total space in bytes not in use
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76 cyg_int32 blocksize; // block size if fixed block
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77 cyg_int32 maxfree; // size of largest unused block
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78 cyg_int8 waiting; // are there any threads waiting for memory?
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79 const cyg_uint8 *origbase; // address of original region used when pool
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80 // created
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81 cyg_int32 origsize; // size of original region used when pool
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82 // created
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83
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84 // maxoverhead is the *maximum* per-allocation overhead imposed by
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85 // the allocator implementation. Note: this is rarely the typical
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86 // overhead which often depends on the size of the allocation requested.
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87 // It includes overhead due to alignment constraints. For example, if
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88 // maxfree and maxoverhead are available for this allocator, then an
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89 // allocation request of (maxfree-maxoverhead) bytes must always succeed
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90 // Unless maxoverhead is set to -1 of course, in which case the allocator
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91 // does not support reporting this information.
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92
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93 cyg_int8 maxoverhead;
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94
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95 void
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96 init() {
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97 arenabase = (const cyg_uint8 *)-1;
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98 arenasize = -1;
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99 freeblocks = -1;
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100 totalallocated = -1;
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101 totalfree = -1;
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102 blocksize = -1;
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103 maxfree = -1;
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104 waiting = -1;
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105 origbase = (const cyg_uint8 *)-1;
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106 origsize = -1;
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107 maxoverhead = -1;
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108 }
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109
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110 // constructor
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111 Cyg_Mempool_Status() { init(); }
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112 };
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113
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114 // Flags to pass to get_status() methods to tell it which stat(s) is/are
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115 // being requested
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116
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117 #define CYG_MEMPOOL_STAT_ARENABASE (1<<0)
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118 #define CYG_MEMPOOL_STAT_ARENASIZE (1<<1)
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119 #define CYG_MEMPOOL_STAT_FREEBLOCKS (1<<2)
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120 #define CYG_MEMPOOL_STAT_TOTALALLOCATED (1<<3)
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121 #define CYG_MEMPOOL_STAT_TOTALFREE (1<<4)
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122 #define CYG_MEMPOOL_STAT_BLOCKSIZE (1<<5)
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123 #define CYG_MEMPOOL_STAT_MAXFREE (1<<6)
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124 #define CYG_MEMPOOL_STAT_WAITING (1<<7)
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125 #define CYG_MEMPOOL_STAT_ORIGBASE (1<<9)
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126 #define CYG_MEMPOOL_STAT_ORIGSIZE (1<<10)
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127 #define CYG_MEMPOOL_STAT_MAXOVERHEAD (1<<11)
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128
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129 // And an opaque type for any arguments with these flags
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130 typedef cyg_uint16 cyg_mempool_status_flag_t;
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131
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132 // breakpoint site for out of memory conditions
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133 #ifdef CYGSEM_MEMALLOC_INVOKE_OUT_OF_MEMORY
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134 #include <cyg/memalloc/kapi.h> // protoype for cyg_memalloc_alloc_fail
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135 #define CYG_MEMALLOC_FAIL_TEST( test, size ) \
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136 CYG_MACRO_START \
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137 if ( test) { \
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138 cyg_memalloc_alloc_fail(__FILE__, __LINE__, size ); \
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139 } \
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140 CYG_MACRO_END
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141 #define CYG_MEMALLOC_FAIL( size) \
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142 CYG_MACRO_START \
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143 cyg_memalloc_alloc_fail(__FILE__, __LINE__, size ); \
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144 CYG_MACRO_END
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145 #else
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146 #define CYG_MEMALLOC_FAIL_TEST( test, size ) CYG_EMPTY_STATEMENT
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147 #define CYG_MEMALLOC_FAIL( size ) CYG_EMPTY_STATEMENT
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148 #endif
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149
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150 #endif /* ifndef CYGONCE_MEMALLOC_COMMON_HXX */
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151 /* EOF common.hxx */