Mercurial > flash_v2

annotate packages/services/memalloc/common/current/cdl/memalloc.cdl @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
parents
children 77cec8369160
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115
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1 # ====================================================================
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2 #
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3 # memalloc.cdl
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4 #
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5 # Dynamic memory allocator services configuration data
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6 #
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7 # ====================================================================
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8 #####COPYRIGHTBEGIN####
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9 #
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10 # -------------------------------------------
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11 # The contents of this file are subject to the Red Hat eCos Public License
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12 # Version 1.1 (the "License"); you may not use this file except in
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13 # compliance with the License. You may obtain a copy of the License at
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14 # http://www.redhat.com/
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15 #
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16 # Software distributed under the License is distributed on an "AS IS"
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17 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 # License for the specific language governing rights and limitations under
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19 # the License.
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20 #
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21 # The Original Code is eCos - Embedded Configurable Operating System,
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22 # released September 30, 1998.
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23 #
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24 # The Initial Developer of the Original Code is Red Hat.
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25 # Portions created by Red Hat are
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26 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 # All Rights Reserved.
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28 # -------------------------------------------
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29 #
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30 #####COPYRIGHTEND####
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31 # ====================================================================
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32 ######DESCRIPTIONBEGIN####
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33 #
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34 # Author(s): jlarmour
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35 # Contributors:
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36 # Date: 2000-06-02
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37 #
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38 #####DESCRIPTIONEND####
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39 #
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40 # ====================================================================
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41
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42 cdl_package CYGPKG_MEMALLOC {
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43 display "Dynamic memory allocation"
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44 description "
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45 This package provides memory allocator infrastructure required for
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46 dynamic memory allocators, including the ISO standard malloc
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47 interface. It also contains some sample implementations."
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48 include_dir cyg/memalloc
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49 compile dlmalloc.cxx kapi.cxx malloc.cxx memfixed.cxx memvar.cxx
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50
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51 # ====================================================================
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52
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53 cdl_component CYGPKG_MEMALLOC_ALLOCATORS {
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54 display "Memory allocator implementations"
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55 flavor none
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56 no_define
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57 description "
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58 This component contains configuration options related to the
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59 various memory allocators available."
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60
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61 cdl_component CYGPKG_MEMALLOC_ALLOCATOR_FIXED {
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62 display "Fixed block allocator"
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63 flavor none
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64 no_define
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65 description "
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66 This component contains configuration options related to the
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67 fixed block memory allocator."
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68
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69 cdl_option CYGSEM_MEMALLOC_ALLOCATOR_FIXED_THREADAWARE {
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70 display "Make thread safe"
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71 active_if CYGPKG_KERNEL
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72 default_value 1
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73 description "
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74 With this option enabled, this allocator will be
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75 made thread-safe. Additionally allocation functions
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76 are made available that allow a thread to wait
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77 until memory is available."
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78 }
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79 }
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80
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81 cdl_component CYGPKG_MEMALLOC_ALLOCATOR_VARIABLE {
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82 display "Simple variable block allocator"
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83 flavor none
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84 no_define
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85 description "
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86 This component contains configuration options related to the
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87 simple variable block memory allocator."
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88
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89 cdl_option CYGSEM_MEMALLOC_ALLOCATOR_VARIABLE_THREADAWARE {
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90 display "Make thread safe"
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91 active_if CYGPKG_KERNEL
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92 default_value 1
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93 description "
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94 With this option enabled, this allocator will be
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95 made thread-safe. Additionally allocation functions
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96 are added that allow a thread to wait until memory
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97 are made available that allow a thread to wait
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98 until memory is available."
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99 }
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100
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101 cdl_option CYGSEM_MEMALLOC_ALLOCATOR_VARIABLE_COALESCE {
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102 display "Coalesce memory"
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103 default_value 1
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104 description "
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105 The variable-block memory allocator can perform coalescing
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106 of memory whenever the application code releases memory back
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107 to the pool. This coalescing reduces the possibility of
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108 memory fragmentation problems, but involves extra code and
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109 processor cycles."
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110 }
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111 }
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112
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113 cdl_component CYGPKG_MEMALLOC_ALLOCATOR_DLMALLOC {
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114 display "Doug Lea's malloc"
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115 flavor none
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116 description "
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117 This component contains configuration options related to the
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118 port of Doug Lea's memory allocator, normally known as
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119 dlmalloc."
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120
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121 cdl_option CYGDBG_MEMALLOC_ALLOCATOR_DLMALLOC_DEBUG {
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122 display "Debug build"
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123 requires CYGDBG_USE_ASSERTS
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124 default_value { 0 != CYGDBG_USE_ASSERTS }
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125 description "
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126 Doug Lea's malloc implementation has substantial amounts
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127 of internal checking in order to verify the operation
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128 and consistency of the allocator. However this imposes
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129 substantial overhead on each operation. Therefore this
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130 checking may be individually disabled."
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131 }
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132
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133 cdl_option CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_THREADAWARE {
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134 display "Make thread safe"
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135 active_if CYGPKG_KERNEL
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136 requires CYGPKG_KERNEL
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137 default_value 1
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138 description "
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139 With this option enabled, this allocator will be
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140 made thread-safe. Additionally allocation functions
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141 are made available that allow a thread to wait
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142 until memory is available."
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143 }
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144
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145 cdl_option CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_SAFE_MULTIPLE {
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146 display "Support more than one instance"
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147 default_value 1
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148 description "
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149 Having this option disabled allows important
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150 implementation structures to be declared as a single
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151 static instance, allowing faster access. However this
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152 would fail if there is more than one instance of
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153 the dlmalloc allocator class. Therefore this option can
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154 be enabled if multiple instances are required. Note: as
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155 a special case, if this allocator is used as the
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156 implementation of malloc, and it can be determined there
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157 is more than one malloc pool, then this option will be
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158 silently enabled."
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159 }
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160
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161 cdl_option CYGIMP_MEMALLOC_ALLOCATOR_DLMALLOC_USE_MEMCPY {
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162 display "Use system memcpy() and memset()"
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163 requires CYGPKG_ISOINFRA
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164 default_value { 0 != CYGPKG_ISOINFRA }
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165 description "
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166 This may be used to control whether memset() and memcpy()
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167 are used within the implementation. The alternative is
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168 to use some macro equivalents, which some people report
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169 are faster in some circumstances."
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170 }
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171 }
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172 }
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173
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174 cdl_option CYGFUN_MEMALLOC_KAPI {
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175 display "Kernel C API support for memory allocation"
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176 active_if CYGPKG_KERNEL
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177 default_value CYGFUN_KERNEL_API_C
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178 description "
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179 This option must be enabled to provide the extensions required
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180 to support integration into the kernel C API."
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181 }
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182
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183 cdl_component CYGPKG_MEMALLOC_MALLOC_ALLOCATORS {
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184 display "malloc() and supporting allocators"
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185 flavor bool
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186 active_if CYGPKG_ISOINFRA
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187 implements CYGINT_ISO_MALLOC
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188 implements CYGINT_ISO_MALLINFO
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189 default_value 1
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190 description "
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191 This component enables support for dynamic memory
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192 allocation as supplied by the functions malloc(),
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193 free(), calloc() and realloc(). As these
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194 functions are often used, but can have quite an
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195 overhead, disabling them here can ensure they
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196 cannot even be used accidentally when static
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197 allocation is preferred. Within this component are
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198 various allocators that can be selected for use
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199 as the underlying implementation of the dynamic
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200 allocation functions."
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201
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202 make -priority 50 {
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203 heapgeninc.tcl : <PACKAGE>/src/heapgen.cpp
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204 $(CC) $(CFLAGS) $(INCLUDE_PATH) -Wp,-MD,heapgen.tmp -E $< > $@
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205 @echo $@ ':' $< '\' > $(notdir $@).deps
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206 @tail +2 heapgen.tmp >> $(notdir $@).deps
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207 @echo >> $(notdir $@).deps
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208 @rm heapgen.tmp
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209 }
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210
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211 # FIXME this should have a dependency on mlt_headers, but CDL doesn't
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212 # permit custom build rules depending on phony targets
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213 # FIXME we workaround an NT cygtclsh80 bug by cd'ing into the
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214 # correct dir and running heapgen.tcl from there rather than passing
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215 # an absolute path.
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216 make -priority 50 {
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217 heaps.cxx : heapgeninc.tcl <PACKAGE>/src/heapgen.tcl
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218 sh -c "cd $(REPOSITORY)/$(PACKAGE)/src ; sh heapgen.tcl $(PREFIX) `pwd`"
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219 @cp heaps.hxx $(PREFIX)/include/pkgconf/heaps.hxx
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220 @chmod u+w $(PREFIX)/include/pkgconf/heaps.hxx
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221 }
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222
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223 make_object {
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224 heaps.o.d : heaps.cxx
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225 $(CC) $(CFLAGS) $(INCLUDE_PATH) -Wp,-MD,heaps.tmp -c -o $(OBJECT_PREFIX)_$(notdir $(@:.o.d=.o)) $<
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226 @echo $@ ':' $< '\' > $@
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227 @tail +2 heaps.tmp >> $@
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228 @echo >> $@
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229 @rm heaps.tmp
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230 }
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231
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232 cdl_interface CYGINT_MEMALLOC_MALLOC_ALLOCATORS {
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233 display "malloc() allocator implementations"
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234 requires { CYGINT_MEMALLOC_MALLOC_ALLOCATORS == 1 }
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235 no_define
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236 }
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237
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238 cdl_option CYGBLD_MEMALLOC_MALLOC_IMPLEMENTATION_HEADER {
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239 display "malloc() implementation instantiation data"
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240 flavor data
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241 description "
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242 Memory allocator implementations that are capable of being
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243 used underneath malloc() must be instantiated. The code
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244 to do this is set in this option. It is only intended to
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245 be set by the implementation, not the user."
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246 # default corresponds to the default allocator
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247 default_value {"<cyg/memalloc/memvar.hxx>"}
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248 }
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249
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250 cdl_option CYGIMP_MEMALLOC_MALLOC_VARIABLE_SIMPLE {
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251 display "Simple variable block implementation"
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252 description "This causes malloc() to use the simple
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253 variable block allocator."
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254 default_value 1
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255 implements CYGINT_MEMALLOC_MALLOC_ALLOCATORS
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256 requires { CYGBLD_MEMALLOC_MALLOC_IMPLEMENTATION_HEADER == \
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257 "<cyg/memalloc/memvar.hxx>" }
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258 requires CYGSEM_MEMALLOC_ALLOCATOR_VARIABLE_COALESCE
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259 }
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260
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261 cdl_option CYGIMP_MEMALLOC_MALLOC_DLMALLOC {
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262 display "Doug Lea's malloc implementation"
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263 description "This causes malloc() to use a version of Doug Lea's
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264 malloc (dlmalloc) as the underlying implementation."
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265 default_value 0
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266 implements CYGINT_MEMALLOC_MALLOC_ALLOCATORS
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267 requires { CYGBLD_MEMALLOC_MALLOC_IMPLEMENTATION_HEADER == \
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268 "<cyg/memalloc/dlmalloc.hxx>" }
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269 }
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270 }
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271 cdl_option CYGNUM_MEMALLOC_FALLBACK_MALLOC_POOL_SIZE {
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272 display "Size of the fallback dynamic memory pool in bytes"
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273 flavor data
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274 legal_values 32 to 0x7fffffff
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275 default_value 16384
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276 description "
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277 If *no* heaps are configured in your memory layout,
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278 dynamic memory allocation by
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279 malloc() and calloc() must be from a fixed-size,
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280 contiguous memory pool (note here that it is the
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281 pool that is of a fixed size, but malloc() is still
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282 able to allocate variable sized chunks of memory
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283 from it). This option is the size
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284 of that pool, in bytes. Note that not all of
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285 this is available for programs to
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286 use - some is needed for internal information
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287 about memory regions, and some may be lost to
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288 ensure that memory allocation only returns
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289 memory aligned on word (or double word)
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290 boundaries - a very common architecture
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291 constraint."
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292 }
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293 # ====================================================================
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294
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295 cdl_component CYGPKG_MEMALLOC_OPTIONS {
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296 display "Common memory allocator package build options"
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297 flavor none
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298 no_define
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299 description "
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300 Package specific build options including control over
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301 compiler flags used only in building this package,
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302 and details of which tests are built."
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303
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304 cdl_option CYGPKG_MEMALLOC_CFLAGS_ADD {
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305 display "Additional compiler flags"
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306 flavor data
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307 no_define
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308 default_value { "" }
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309 description "
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310 This option modifies the set of compiler flags for
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311 building this package. These flags are used in addition
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312 to the set of global flags."
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313 }
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314
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315 cdl_option CYGPKG_MEMALLOC_CFLAGS_REMOVE {
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316 display "Suppressed compiler flags"
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317 flavor data
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318 no_define
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319 default_value { "" }
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320 description "
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321 This option modifies the set of compiler flags for
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322 building this package. These flags are removed from
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323 the set of global flags if present."
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324 }
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325
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326 cdl_option CYGPKG_MEMALLOC_TESTS {
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327 display "Tests"
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328 flavor data
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329 no_define
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330 calculated { "tests/dlmalloc1 tests/dlmalloc2 tests/kmemfix1 tests/kmemvar1 tests/malloc1 tests/malloc2 tests/malloc3 tests/malloc4 tests/memfix1 tests/memfix2 tests/memvar1 tests/memvar2 tests/realloc" }
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331 description "
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332 This option specifies the set of tests for this package."
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333 }
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334 }
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335 }
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336
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337 # ====================================================================
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338 # EOF memalloc.cdl