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annotate packages/services/memalloc/common/current/src/kapi.cxx @ 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 087a81b7ea16
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // kapi.cxx
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4 //
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5 // Implementation of kernel C API functions for memory pools
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6 //
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7 //==========================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): nickg, dsm, jlarmour
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43 // Contributors:
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44 // Date: 2000-06-12
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45 // Description: Implementation of kernel C API functions for memory pools
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46 // Usage:
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47 //
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //==========================================================================
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52
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53 // CONFIGURATION
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54
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55 #include <pkgconf/memalloc.h>
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56 #include <pkgconf/system.h>
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57 #ifdef CYGPKG_KERNEL
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58 # include <pkgconf/kernel.h>
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59 #endif
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60
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61 #ifdef CYGFUN_MEMALLOC_KAPI
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62
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63 // INCLUDES
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64
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65 #include <cyg/infra/cyg_type.h> // types
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66 #include <cyg/infra/cyg_ass.h> // assertion macros
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67 #include <cyg/infra/cyg_trac.h> // tracing macros
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68 #include <cyg/kernel/ktypes.h> // base kernel types
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69
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70 #include <cyg/memalloc/memvar.hxx>
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71 #include <cyg/memalloc/memfixed.hxx>
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72 #include <cyg/memalloc/common.hxx> // status flags
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73
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74 #include <cyg/kernel/kapi.h> // C API
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75
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76 // MACROS
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77
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78 #ifdef CYGDBG_USE_ASSERTS
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79
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80 #define CYG_ASSERT_SIZES(cstruct, cxxstruct) \
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81 CYG_MACRO_START \
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82 char *msg = "Size of C struct " #cstruct \
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83 " != size of C++ struct " #cxxstruct ; \
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84 CYG_ASSERT( sizeof(cstruct) == sizeof(cxxstruct) , msg ); \
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85 CYG_MACRO_END
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86
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87 #else
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88
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89 #define CYG_ASSERT_SIZES(cstruct, cxxstruct)
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90
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91 #endif
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92
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93 // FUNCTIONS
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94
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95 // -------------------------------------------------------------------------
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96 // Magic new function
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97
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98 inline void *operator new(size_t size, void *ptr)
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99 {
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100 CYG_CHECK_DATA_PTR( ptr, "Bad pointer" );
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101 return ptr;
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102 }
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103
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104 /*-----------------------------------------------------------------------*/
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105 /* Memory pools */
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106
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107 /* Create a variable size memory pool */
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108 externC void cyg_mempool_var_create(
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109 void *base, /* base of memory to use for pool */
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110 cyg_int32 size, /* size of memory in bytes */
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111 cyg_handle_t *handle, /* returned handle of memory pool */
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112 cyg_mempool_var *var /* space to put pool structure in */
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113 ) __THROW
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114 {
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115 CYG_ASSERT_SIZES( cyg_mempool_var, Cyg_Mempool_Variable );
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116
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117 Cyg_Mempool_Variable *t = new((void *)var) Cyg_Mempool_Variable (
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118 (cyg_uint8 *)base,
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119 size
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120 );
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121 t=t;
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122
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123 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
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124 *handle = (cyg_handle_t)var;
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125 }
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126
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127 /* Delete variable size memory pool */
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128 externC void cyg_mempool_var_delete(cyg_handle_t varpool) __THROW
115
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129 {
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130 ((Cyg_Mempool_Variable *)varpool)->~Cyg_Mempool_Variable();
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131 }
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132
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133 /* Allocates a block of length size. This waits if the memory is not
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134 currently available. */
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135 #ifdef CYGSEM_MEMALLOC_ALLOCATOR_VARIABLE_THREADAWARE
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136 externC void *cyg_mempool_var_alloc(cyg_handle_t varpool, cyg_int32 size) __THROW
115
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137 {
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138 return ((Cyg_Mempool_Variable *)varpool)->alloc(size);
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139 }
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140
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141 # ifdef CYGFUN_KERNEL_THREADS_TIMER
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142
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143 /* Allocates a block of length size. This waits for up to delay
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144 ticks, if the memory is not already available. NULL is returned if
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145 no memory is available. */
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146 externC void *cyg_mempool_var_timed_alloc(
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147 cyg_handle_t varpool,
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148 cyg_int32 size,
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149 cyg_tick_count_t abstime) __THROW
115
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150 {
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151 return ((Cyg_Mempool_Variable *)varpool)->alloc(size, abstime);
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152 }
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153
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154 # endif
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155 #endif
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156
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157 /* Allocates a block of length size. NULL is returned if no memory is
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158 available. */
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159 externC void *cyg_mempool_var_try_alloc(
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160 cyg_handle_t varpool,
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161 cyg_int32 size) __THROW
115
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162 {
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163 return ((Cyg_Mempool_Variable *)varpool)->try_alloc(size);
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164 }
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165
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166 /* Frees memory back into variable size pool. */
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167 externC void cyg_mempool_var_free(cyg_handle_t varpool, void *p) __THROW
115
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168 {
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169 cyg_bool b CYGBLD_ATTRIB_UNUSED;
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170 b = ((Cyg_Mempool_Variable *)varpool)->free((cyg_uint8 *)p, 0);
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171 CYG_ASSERT( b, "Bad free");
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172 }
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173
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174
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175 /* Returns true if there are any threads waiting for memory in the
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176 given memory pool. */
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177 externC cyg_bool_t cyg_mempool_var_waiting(cyg_handle_t varpool) __THROW
115
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178 {
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179 Cyg_Mempool_Variable *v = (Cyg_Mempool_Variable *)varpool;
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180 Cyg_Mempool_Status stat;
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181
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182 v->get_status( CYG_MEMPOOL_STAT_WAITING, stat );
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183 return (stat.waiting != 0);
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184 }
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185
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186 /* Puts information about a variable memory pool into the structure
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187 provided. */
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188 externC void cyg_mempool_var_get_info(
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189 cyg_handle_t varpool,
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190 cyg_mempool_info *info) __THROW
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191 {
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192 Cyg_Mempool_Variable *v = (Cyg_Mempool_Variable *)varpool;
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193 Cyg_Mempool_Status stat;
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194
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195 v->get_status( CYG_MEMPOOL_STAT_ARENASIZE|
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196 CYG_MEMPOOL_STAT_TOTALFREE|
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197 CYG_MEMPOOL_STAT_ARENABASE|
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198 CYG_MEMPOOL_STAT_ORIGSIZE|
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199 CYG_MEMPOOL_STAT_MAXFREE, stat );
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200
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201 info->totalmem = stat.arenasize;
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202 info->freemem = stat.totalfree;
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203 info->size = stat.origsize;
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204 info->base = const_cast<cyg_uint8 *>(stat.arenabase);
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205 info->blocksize = -1;
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206 info->maxfree = stat.maxfree;
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207 }
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208
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209
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210 /* Create a fixed size memory pool */
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211 externC void cyg_mempool_fix_create(
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212 void *base, // base of memory to use for pool
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213 cyg_int32 size, // size of memory in byte
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214 cyg_int32 blocksize, // size of allocation in bytes
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215 cyg_handle_t *handle, // handle of memory pool
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216 cyg_mempool_fix *fix // space to put pool structure in
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217 ) __THROW
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218 {
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219 CYG_ASSERT_SIZES( cyg_mempool_fix, Cyg_Mempool_Fixed );
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220
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221 Cyg_Mempool_Fixed *t = new((void *)fix) Cyg_Mempool_Fixed (
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222 (cyg_uint8 *)base,
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223 size,
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224 blocksize
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225 );
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226 t=t;
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227
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228 CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
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229 *handle = (cyg_handle_t)fix;
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230 }
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231
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232 /* Delete fixed size memory pool */
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233 externC void cyg_mempool_fix_delete(cyg_handle_t fixpool) __THROW
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234 {
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235 ((Cyg_Mempool_Fixed *)fixpool)->~Cyg_Mempool_Fixed();
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236 }
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237
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238 #ifdef CYGSEM_MEMALLOC_ALLOCATOR_FIXED_THREADAWARE
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239 /* Allocates a block. This waits if the memory is not
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240 currently available. */
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241 externC void *cyg_mempool_fix_alloc(cyg_handle_t fixpool) __THROW
115
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242 {
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243 return ((Cyg_Mempool_Fixed *)fixpool)->alloc();
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244 }
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245
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246 # ifdef CYGFUN_KERNEL_THREADS_TIMER
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247
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248 /* Allocates a block. This waits for up to delay ticks, if the memory
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249 is not already available. NULL is returned if no memory is
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250 available. */
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251 externC void *cyg_mempool_fix_timed_alloc(
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252 cyg_handle_t fixpool,
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253 cyg_tick_count_t abstime) __THROW
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254 {
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255 return ((Cyg_Mempool_Fixed *)fixpool)->alloc(abstime);
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256 }
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257
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258 # endif
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259 #endif
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260
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261 /* Allocates a block. NULL is returned if no memory is available. */
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262 externC void *cyg_mempool_fix_try_alloc(cyg_handle_t fixpool) __THROW
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263 {
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264 return ((Cyg_Mempool_Fixed *)fixpool)->try_alloc();
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265 }
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266
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267 /* Frees memory back into fixed size pool. */
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268 externC void cyg_mempool_fix_free(cyg_handle_t fixpool, void *p) __THROW
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269 {
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270 cyg_bool b CYGBLD_ATTRIB_UNUSED;
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271 b = ((Cyg_Mempool_Fixed *)fixpool)->free((cyg_uint8 *)p);
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272 CYG_ASSERT( b, "Bad free");
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273 }
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274
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275 /* Returns true if there are any threads waiting for memory in the
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276 given memory pool. */
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277 externC cyg_bool_t cyg_mempool_fix_waiting(cyg_handle_t fixpool) __THROW
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278 {
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279 Cyg_Mempool_Fixed *f = (Cyg_Mempool_Fixed *)fixpool;
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280 Cyg_Mempool_Status stat;
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281
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282 f->get_status( CYG_MEMPOOL_STAT_WAITING, stat );
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283 return (stat.waiting != 0);
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284 }
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285
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286 /* Puts information about a fixed block memory pool into the structure
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287 provided. */
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288 externC void cyg_mempool_fix_get_info(
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289 cyg_handle_t fixpool,
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290 cyg_mempool_info *info) __THROW
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291 {
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292 Cyg_Mempool_Fixed *f = (Cyg_Mempool_Fixed *)fixpool;
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293 Cyg_Mempool_Status stat;
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294
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295 f->get_status( CYG_MEMPOOL_STAT_ARENASIZE|
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296 CYG_MEMPOOL_STAT_TOTALFREE|
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297 CYG_MEMPOOL_STAT_ARENABASE|
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298 CYG_MEMPOOL_STAT_ORIGSIZE|
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299 CYG_MEMPOOL_STAT_BLOCKSIZE|
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300 CYG_MEMPOOL_STAT_MAXFREE, stat );
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301
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302 info->totalmem = stat.arenasize;
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303 info->freemem = stat.totalfree;
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304 info->size = stat.origsize;
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305 info->base = const_cast<cyg_uint8 *>(stat.arenabase);
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306 info->blocksize = stat.blocksize;
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307 info->maxfree = stat.maxfree;
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308 }
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309
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310 // -------------------------------------------------------------------------
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311 // Check structure sizes.
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312 // This class and constructor get run automatically in debug versions
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313 // of the kernel and check that the structures configured in the C
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314 // code are the same size as the C++ classes they should match.
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315
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316 #ifdef CYGPKG_INFRA_DEBUG
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317
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318 class Cyg_Check_Mem_Structure_Sizes
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319 {
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320 int dummy;
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321 public:
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322 Cyg_Check_Mem_Structure_Sizes( int x ) __THROW;
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323
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324 };
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325
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326 #define CYG_CHECK_SIZES(cstruct, cxxstruct) \
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327 if( sizeof(cstruct) != sizeof(cxxstruct) ) \
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328 { \
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329 char *fmt = "Size of C struct " #cstruct \
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330 " != size of C++ struct " #cxxstruct ; \
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331 CYG_TRACE2(1, fmt, sizeof(cstruct) , sizeof(cxxstruct) ); \
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332 fail = true; \
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333 fmt = fmt; \
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334 }
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335
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336 Cyg_Check_Mem_Structure_Sizes::Cyg_Check_Mem_Structure_Sizes(int x) __THROW
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337 {
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338 cyg_bool fail = false;
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339
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340 dummy = x+1;
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341
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342 CYG_CHECK_SIZES( cyg_mempool_var, Cyg_Mempool_Variable );
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343 CYG_CHECK_SIZES( cyg_mempool_fix, Cyg_Mempool_Fixed );
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344
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345 CYG_ASSERT( !fail, "Size checks failed");
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346 }
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347
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348 static Cyg_Check_Mem_Structure_Sizes cyg_memalloc_check_structure_sizes(1);
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349
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350 #endif
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351
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352 // -------------------------------------------------------------------------
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353
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354
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355 #endif // ifdef CYGFUN_MEMALLOC_KAPI
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356
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357 // End of kapi.cxx