utalloc.c revision 1.1.1.2.4.2
1 1.1.1.2.4.2 rmind /****************************************************************************** 2 1.1.1.2.4.2 rmind * 3 1.1.1.2.4.2 rmind * Module Name: utalloc - local memory allocation routines 4 1.1.1.2.4.2 rmind * 5 1.1.1.2.4.2 rmind *****************************************************************************/ 6 1.1.1.2.4.2 rmind 7 1.1.1.2.4.2 rmind /* 8 1.1.1.2.4.2 rmind * Copyright (C) 2000 - 2011, Intel Corp. 9 1.1.1.2.4.2 rmind * All rights reserved. 10 1.1.1.2.4.2 rmind * 11 1.1.1.2.4.2 rmind * Redistribution and use in source and binary forms, with or without 12 1.1.1.2.4.2 rmind * modification, are permitted provided that the following conditions 13 1.1.1.2.4.2 rmind * are met: 14 1.1.1.2.4.2 rmind * 1. Redistributions of source code must retain the above copyright 15 1.1.1.2.4.2 rmind * notice, this list of conditions, and the following disclaimer, 16 1.1.1.2.4.2 rmind * without modification. 17 1.1.1.2.4.2 rmind * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.1.1.2.4.2 rmind * substantially similar to the "NO WARRANTY" disclaimer below 19 1.1.1.2.4.2 rmind * ("Disclaimer") and any redistribution must be conditioned upon 20 1.1.1.2.4.2 rmind * including a substantially similar Disclaimer requirement for further 21 1.1.1.2.4.2 rmind * binary redistribution. 22 1.1.1.2.4.2 rmind * 3. Neither the names of the above-listed copyright holders nor the names 23 1.1.1.2.4.2 rmind * of any contributors may be used to endorse or promote products derived 24 1.1.1.2.4.2 rmind * from this software without specific prior written permission. 25 1.1.1.2.4.2 rmind * 26 1.1.1.2.4.2 rmind * Alternatively, this software may be distributed under the terms of the 27 1.1.1.2.4.2 rmind * GNU General Public License ("GPL") version 2 as published by the Free 28 1.1.1.2.4.2 rmind * Software Foundation. 29 1.1.1.2.4.2 rmind * 30 1.1.1.2.4.2 rmind * NO WARRANTY 31 1.1.1.2.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.1.1.2.4.2 rmind * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.1.1.2.4.2 rmind * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.1.1.2.4.2 rmind * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.1.1.2.4.2 rmind * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.1.1.2.4.2 rmind * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.1.1.2.4.2 rmind * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.1.1.2.4.2 rmind * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.1.1.2.4.2 rmind * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.1.1.2.4.2 rmind * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.1.1.2.4.2 rmind * POSSIBILITY OF SUCH DAMAGES. 42 1.1.1.2.4.2 rmind */ 43 1.1.1.2.4.2 rmind 44 1.1.1.2.4.2 rmind #define __UTALLOC_C__ 45 1.1.1.2.4.2 rmind 46 1.1.1.2.4.2 rmind #include "acpi.h" 47 1.1.1.2.4.2 rmind #include "accommon.h" 48 1.1.1.2.4.2 rmind #include "acdebug.h" 49 1.1.1.2.4.2 rmind 50 1.1.1.2.4.2 rmind #define _COMPONENT ACPI_UTILITIES 51 1.1.1.2.4.2 rmind ACPI_MODULE_NAME ("utalloc") 52 1.1.1.2.4.2 rmind 53 1.1.1.2.4.2 rmind 54 1.1.1.2.4.2 rmind /******************************************************************************* 55 1.1.1.2.4.2 rmind * 56 1.1.1.2.4.2 rmind * FUNCTION: AcpiUtCreateCaches 57 1.1.1.2.4.2 rmind * 58 1.1.1.2.4.2 rmind * PARAMETERS: None 59 1.1.1.2.4.2 rmind * 60 1.1.1.2.4.2 rmind * RETURN: Status 61 1.1.1.2.4.2 rmind * 62 1.1.1.2.4.2 rmind * DESCRIPTION: Create all local caches 63 1.1.1.2.4.2 rmind * 64 1.1.1.2.4.2 rmind ******************************************************************************/ 65 1.1.1.2.4.2 rmind 66 1.1.1.2.4.2 rmind ACPI_STATUS 67 1.1.1.2.4.2 rmind AcpiUtCreateCaches ( 68 1.1.1.2.4.2 rmind void) 69 1.1.1.2.4.2 rmind { 70 1.1.1.2.4.2 rmind ACPI_STATUS Status; 71 1.1.1.2.4.2 rmind 72 1.1.1.2.4.2 rmind 73 1.1.1.2.4.2 rmind /* Object Caches, for frequently used objects */ 74 1.1.1.2.4.2 rmind 75 1.1.1.2.4.2 rmind Status = AcpiOsCreateCache ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE), 76 1.1.1.2.4.2 rmind ACPI_MAX_NAMESPACE_CACHE_DEPTH, &AcpiGbl_NamespaceCache); 77 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 78 1.1.1.2.4.2 rmind { 79 1.1.1.2.4.2 rmind return (Status); 80 1.1.1.2.4.2 rmind } 81 1.1.1.2.4.2 rmind 82 1.1.1.2.4.2 rmind Status = AcpiOsCreateCache ("Acpi-State", sizeof (ACPI_GENERIC_STATE), 83 1.1.1.2.4.2 rmind ACPI_MAX_STATE_CACHE_DEPTH, &AcpiGbl_StateCache); 84 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 85 1.1.1.2.4.2 rmind { 86 1.1.1.2.4.2 rmind return (Status); 87 1.1.1.2.4.2 rmind } 88 1.1.1.2.4.2 rmind 89 1.1.1.2.4.2 rmind Status = AcpiOsCreateCache ("Acpi-Parse", sizeof (ACPI_PARSE_OBJ_COMMON), 90 1.1.1.2.4.2 rmind ACPI_MAX_PARSE_CACHE_DEPTH, &AcpiGbl_PsNodeCache); 91 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 92 1.1.1.2.4.2 rmind { 93 1.1.1.2.4.2 rmind return (Status); 94 1.1.1.2.4.2 rmind } 95 1.1.1.2.4.2 rmind 96 1.1.1.2.4.2 rmind Status = AcpiOsCreateCache ("Acpi-ParseExt", sizeof (ACPI_PARSE_OBJ_NAMED), 97 1.1.1.2.4.2 rmind ACPI_MAX_EXTPARSE_CACHE_DEPTH, &AcpiGbl_PsNodeExtCache); 98 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 99 1.1.1.2.4.2 rmind { 100 1.1.1.2.4.2 rmind return (Status); 101 1.1.1.2.4.2 rmind } 102 1.1.1.2.4.2 rmind 103 1.1.1.2.4.2 rmind Status = AcpiOsCreateCache ("Acpi-Operand", sizeof (ACPI_OPERAND_OBJECT), 104 1.1.1.2.4.2 rmind ACPI_MAX_OBJECT_CACHE_DEPTH, &AcpiGbl_OperandCache); 105 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 106 1.1.1.2.4.2 rmind { 107 1.1.1.2.4.2 rmind return (Status); 108 1.1.1.2.4.2 rmind } 109 1.1.1.2.4.2 rmind 110 1.1.1.2.4.2 rmind 111 1.1.1.2.4.2 rmind #ifdef ACPI_DBG_TRACK_ALLOCATIONS 112 1.1.1.2.4.2 rmind 113 1.1.1.2.4.2 rmind /* Memory allocation lists */ 114 1.1.1.2.4.2 rmind 115 1.1.1.2.4.2 rmind Status = AcpiUtCreateList ("Acpi-Global", 0, 116 1.1.1.2.4.2 rmind &AcpiGbl_GlobalList); 117 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 118 1.1.1.2.4.2 rmind { 119 1.1.1.2.4.2 rmind return (Status); 120 1.1.1.2.4.2 rmind } 121 1.1.1.2.4.2 rmind 122 1.1.1.2.4.2 rmind Status = AcpiUtCreateList ("Acpi-Namespace", sizeof (ACPI_NAMESPACE_NODE), 123 1.1.1.2.4.2 rmind &AcpiGbl_NsNodeList); 124 1.1.1.2.4.2 rmind if (ACPI_FAILURE (Status)) 125 1.1.1.2.4.2 rmind { 126 1.1.1.2.4.2 rmind return (Status); 127 1.1.1.2.4.2 rmind } 128 1.1.1.2.4.2 rmind #endif 129 1.1.1.2.4.2 rmind 130 1.1.1.2.4.2 rmind return (AE_OK); 131 1.1.1.2.4.2 rmind } 132 1.1.1.2.4.2 rmind 133 1.1.1.2.4.2 rmind 134 1.1.1.2.4.2 rmind /******************************************************************************* 135 1.1.1.2.4.2 rmind * 136 1.1.1.2.4.2 rmind * FUNCTION: AcpiUtDeleteCaches 137 1.1.1.2.4.2 rmind * 138 1.1.1.2.4.2 rmind * PARAMETERS: None 139 1.1.1.2.4.2 rmind * 140 1.1.1.2.4.2 rmind * RETURN: Status 141 1.1.1.2.4.2 rmind * 142 1.1.1.2.4.2 rmind * DESCRIPTION: Purge and delete all local caches 143 1.1.1.2.4.2 rmind * 144 1.1.1.2.4.2 rmind ******************************************************************************/ 145 1.1.1.2.4.2 rmind 146 1.1.1.2.4.2 rmind ACPI_STATUS 147 1.1.1.2.4.2 rmind AcpiUtDeleteCaches ( 148 1.1.1.2.4.2 rmind void) 149 1.1.1.2.4.2 rmind { 150 1.1.1.2.4.2 rmind #ifdef ACPI_DBG_TRACK_ALLOCATIONS 151 1.1.1.2.4.2 rmind char Buffer[7]; 152 1.1.1.2.4.2 rmind 153 1.1.1.2.4.2 rmind if (AcpiGbl_DisplayFinalMemStats) 154 1.1.1.2.4.2 rmind { 155 1.1.1.2.4.2 rmind ACPI_STRCPY (Buffer, "MEMORY"); 156 1.1.1.2.4.2 rmind (void) AcpiDbDisplayStatistics (Buffer); 157 1.1.1.2.4.2 rmind } 158 1.1.1.2.4.2 rmind #endif 159 1.1.1.2.4.2 rmind 160 1.1.1.2.4.2 rmind (void) AcpiOsDeleteCache (AcpiGbl_NamespaceCache); 161 1.1.1.2.4.2 rmind AcpiGbl_NamespaceCache = NULL; 162 1.1.1.2.4.2 rmind 163 1.1.1.2.4.2 rmind (void) AcpiOsDeleteCache (AcpiGbl_StateCache); 164 1.1.1.2.4.2 rmind AcpiGbl_StateCache = NULL; 165 1.1.1.2.4.2 rmind 166 1.1.1.2.4.2 rmind (void) AcpiOsDeleteCache (AcpiGbl_OperandCache); 167 1.1.1.2.4.2 rmind AcpiGbl_OperandCache = NULL; 168 1.1.1.2.4.2 rmind 169 1.1.1.2.4.2 rmind (void) AcpiOsDeleteCache (AcpiGbl_PsNodeCache); 170 1.1.1.2.4.2 rmind AcpiGbl_PsNodeCache = NULL; 171 1.1.1.2.4.2 rmind 172 1.1.1.2.4.2 rmind (void) AcpiOsDeleteCache (AcpiGbl_PsNodeExtCache); 173 1.1.1.2.4.2 rmind AcpiGbl_PsNodeExtCache = NULL; 174 1.1.1.2.4.2 rmind 175 1.1.1.2.4.2 rmind 176 1.1.1.2.4.2 rmind #ifdef ACPI_DBG_TRACK_ALLOCATIONS 177 1.1.1.2.4.2 rmind 178 1.1.1.2.4.2 rmind /* Debug only - display leftover memory allocation, if any */ 179 1.1.1.2.4.2 rmind 180 1.1.1.2.4.2 rmind AcpiUtDumpAllocations (ACPI_UINT32_MAX, NULL); 181 1.1.1.2.4.2 rmind 182 1.1.1.2.4.2 rmind /* Free memory lists */ 183 1.1.1.2.4.2 rmind 184 1.1.1.2.4.2 rmind AcpiOsFree (AcpiGbl_GlobalList); 185 1.1.1.2.4.2 rmind AcpiGbl_GlobalList = NULL; 186 1.1.1.2.4.2 rmind 187 1.1.1.2.4.2 rmind AcpiOsFree (AcpiGbl_NsNodeList); 188 1.1.1.2.4.2 rmind AcpiGbl_NsNodeList = NULL; 189 1.1.1.2.4.2 rmind #endif 190 1.1.1.2.4.2 rmind 191 1.1.1.2.4.2 rmind return (AE_OK); 192 1.1.1.2.4.2 rmind } 193 1.1.1.2.4.2 rmind 194 1.1.1.2.4.2 rmind 195 1.1.1.2.4.2 rmind /******************************************************************************* 196 1.1.1.2.4.2 rmind * 197 1.1.1.2.4.2 rmind * FUNCTION: AcpiUtValidateBuffer 198 1.1.1.2.4.2 rmind * 199 1.1.1.2.4.2 rmind * PARAMETERS: Buffer - Buffer descriptor to be validated 200 1.1.1.2.4.2 rmind * 201 1.1.1.2.4.2 rmind * RETURN: Status 202 1.1.1.2.4.2 rmind * 203 1.1.1.2.4.2 rmind * DESCRIPTION: Perform parameter validation checks on an ACPI_BUFFER 204 1.1.1.2.4.2 rmind * 205 1.1.1.2.4.2 rmind ******************************************************************************/ 206 1.1.1.2.4.2 rmind 207 1.1.1.2.4.2 rmind ACPI_STATUS 208 1.1.1.2.4.2 rmind AcpiUtValidateBuffer ( 209 1.1.1.2.4.2 rmind ACPI_BUFFER *Buffer) 210 1.1.1.2.4.2 rmind { 211 1.1.1.2.4.2 rmind 212 1.1.1.2.4.2 rmind /* Obviously, the structure pointer must be valid */ 213 1.1.1.2.4.2 rmind 214 1.1.1.2.4.2 rmind if (!Buffer) 215 1.1.1.2.4.2 rmind { 216 1.1.1.2.4.2 rmind return (AE_BAD_PARAMETER); 217 1.1.1.2.4.2 rmind } 218 1.1.1.2.4.2 rmind 219 1.1.1.2.4.2 rmind /* Special semantics for the length */ 220 1.1.1.2.4.2 rmind 221 1.1.1.2.4.2 rmind if ((Buffer->Length == ACPI_NO_BUFFER) || 222 1.1.1.2.4.2 rmind (Buffer->Length == ACPI_ALLOCATE_BUFFER) || 223 1.1.1.2.4.2 rmind (Buffer->Length == ACPI_ALLOCATE_LOCAL_BUFFER)) 224 1.1.1.2.4.2 rmind { 225 1.1.1.2.4.2 rmind return (AE_OK); 226 1.1.1.2.4.2 rmind } 227 1.1.1.2.4.2 rmind 228 1.1.1.2.4.2 rmind /* Length is valid, the buffer pointer must be also */ 229 1.1.1.2.4.2 rmind 230 1.1.1.2.4.2 rmind if (!Buffer->Pointer) 231 1.1.1.2.4.2 rmind { 232 1.1.1.2.4.2 rmind return (AE_BAD_PARAMETER); 233 1.1.1.2.4.2 rmind } 234 1.1.1.2.4.2 rmind 235 1.1.1.2.4.2 rmind return (AE_OK); 236 1.1.1.2.4.2 rmind } 237 1.1.1.2.4.2 rmind 238 1.1.1.2.4.2 rmind 239 1.1.1.2.4.2 rmind /******************************************************************************* 240 1.1.1.2.4.2 rmind * 241 1.1.1.2.4.2 rmind * FUNCTION: AcpiUtInitializeBuffer 242 1.1.1.2.4.2 rmind * 243 1.1.1.2.4.2 rmind * PARAMETERS: Buffer - Buffer to be validated 244 1.1.1.2.4.2 rmind * RequiredLength - Length needed 245 1.1.1.2.4.2 rmind * 246 1.1.1.2.4.2 rmind * RETURN: Status 247 1.1.1.2.4.2 rmind * 248 1.1.1.2.4.2 rmind * DESCRIPTION: Validate that the buffer is of the required length or 249 1.1.1.2.4.2 rmind * allocate a new buffer. Returned buffer is always zeroed. 250 1.1.1.2.4.2 rmind * 251 1.1.1.2.4.2 rmind ******************************************************************************/ 252 1.1.1.2.4.2 rmind 253 1.1.1.2.4.2 rmind ACPI_STATUS 254 1.1.1.2.4.2 rmind AcpiUtInitializeBuffer ( 255 1.1.1.2.4.2 rmind ACPI_BUFFER *Buffer, 256 1.1.1.2.4.2 rmind ACPI_SIZE RequiredLength) 257 1.1.1.2.4.2 rmind { 258 1.1.1.2.4.2 rmind ACPI_SIZE InputBufferLength; 259 1.1.1.2.4.2 rmind 260 1.1.1.2.4.2 rmind 261 1.1.1.2.4.2 rmind /* Parameter validation */ 262 1.1.1.2.4.2 rmind 263 1.1.1.2.4.2 rmind if (!Buffer || !RequiredLength) 264 1.1.1.2.4.2 rmind { 265 1.1.1.2.4.2 rmind return (AE_BAD_PARAMETER); 266 1.1.1.2.4.2 rmind } 267 1.1.1.2.4.2 rmind 268 1.1.1.2.4.2 rmind /* 269 1.1.1.2.4.2 rmind * Buffer->Length is used as both an input and output parameter. Get the 270 1.1.1.2.4.2 rmind * input actual length and set the output required buffer length. 271 1.1.1.2.4.2 rmind */ 272 1.1.1.2.4.2 rmind InputBufferLength = Buffer->Length; 273 1.1.1.2.4.2 rmind Buffer->Length = RequiredLength; 274 1.1.1.2.4.2 rmind 275 1.1.1.2.4.2 rmind /* 276 1.1.1.2.4.2 rmind * The input buffer length contains the actual buffer length, or the type 277 1.1.1.2.4.2 rmind * of buffer to be allocated by this routine. 278 1.1.1.2.4.2 rmind */ 279 1.1.1.2.4.2 rmind switch (InputBufferLength) 280 1.1.1.2.4.2 rmind { 281 1.1.1.2.4.2 rmind case ACPI_NO_BUFFER: 282 1.1.1.2.4.2 rmind 283 1.1.1.2.4.2 rmind /* Return the exception (and the required buffer length) */ 284 1.1.1.2.4.2 rmind 285 1.1.1.2.4.2 rmind return (AE_BUFFER_OVERFLOW); 286 1.1.1.2.4.2 rmind 287 1.1.1.2.4.2 rmind case ACPI_ALLOCATE_BUFFER: 288 1.1.1.2.4.2 rmind 289 1.1.1.2.4.2 rmind /* Allocate a new buffer */ 290 1.1.1.2.4.2 rmind 291 1.1.1.2.4.2 rmind Buffer->Pointer = AcpiOsAllocate (RequiredLength); 292 1.1.1.2.4.2 rmind break; 293 1.1.1.2.4.2 rmind 294 1.1.1.2.4.2 rmind case ACPI_ALLOCATE_LOCAL_BUFFER: 295 1.1.1.2.4.2 rmind 296 1.1.1.2.4.2 rmind /* Allocate a new buffer with local interface to allow tracking */ 297 1.1.1.2.4.2 rmind 298 1.1.1.2.4.2 rmind Buffer->Pointer = ACPI_ALLOCATE (RequiredLength); 299 1.1.1.2.4.2 rmind break; 300 1.1.1.2.4.2 rmind 301 1.1.1.2.4.2 rmind default: 302 1.1.1.2.4.2 rmind 303 1.1.1.2.4.2 rmind /* Existing buffer: Validate the size of the buffer */ 304 1.1.1.2.4.2 rmind 305 1.1.1.2.4.2 rmind if (InputBufferLength < RequiredLength) 306 1.1.1.2.4.2 rmind { 307 1.1.1.2.4.2 rmind return (AE_BUFFER_OVERFLOW); 308 1.1.1.2.4.2 rmind } 309 1.1.1.2.4.2 rmind break; 310 1.1.1.2.4.2 rmind } 311 1.1.1.2.4.2 rmind 312 1.1.1.2.4.2 rmind /* Validate allocation from above or input buffer pointer */ 313 1.1.1.2.4.2 rmind 314 1.1.1.2.4.2 rmind if (!Buffer->Pointer) 315 1.1.1.2.4.2 rmind { 316 1.1.1.2.4.2 rmind return (AE_NO_MEMORY); 317 1.1.1.2.4.2 rmind } 318 1.1.1.2.4.2 rmind 319 1.1.1.2.4.2 rmind /* Have a valid buffer, clear it */ 320 1.1.1.2.4.2 rmind 321 1.1.1.2.4.2 rmind ACPI_MEMSET (Buffer->Pointer, 0, RequiredLength); 322 1.1.1.2.4.2 rmind return (AE_OK); 323 1.1.1.2.4.2 rmind } 324 1.1.1.2.4.2 rmind 325 1.1.1.2.4.2 rmind 326 1.1.1.2.4.2 rmind /******************************************************************************* 327 1.1.1.2.4.2 rmind * 328 1.1.1.2.4.2 rmind * FUNCTION: AcpiUtAllocate 329 1.1.1.2.4.2 rmind * 330 1.1.1.2.4.2 rmind * PARAMETERS: Size - Size of the allocation 331 1.1.1.2.4.2 rmind * Component - Component type of caller 332 1.1.1.2.4.2 rmind * Module - Source file name of caller 333 1.1.1.2.4.2 rmind * Line - Line number of caller 334 1.1.1.2.4.2 rmind * 335 1.1.1.2.4.2 rmind * RETURN: Address of the allocated memory on success, NULL on failure. 336 1.1.1.2.4.2 rmind * 337 1.1.1.2.4.2 rmind * DESCRIPTION: Subsystem equivalent of malloc. 338 1.1.1.2.4.2 rmind * 339 1.1.1.2.4.2 rmind ******************************************************************************/ 340 1.1.1.2.4.2 rmind 341 1.1.1.2.4.2 rmind void * 342 1.1.1.2.4.2 rmind AcpiUtAllocate ( 343 1.1.1.2.4.2 rmind ACPI_SIZE Size, 344 1.1.1.2.4.2 rmind UINT32 Component, 345 1.1.1.2.4.2 rmind const char *Module, 346 1.1.1.2.4.2 rmind UINT32 Line) 347 1.1.1.2.4.2 rmind { 348 1.1.1.2.4.2 rmind void *Allocation; 349 1.1.1.2.4.2 rmind 350 1.1.1.2.4.2 rmind 351 1.1.1.2.4.2 rmind ACPI_FUNCTION_TRACE_U32 (UtAllocate, Size); 352 1.1.1.2.4.2 rmind 353 1.1.1.2.4.2 rmind 354 1.1.1.2.4.2 rmind /* Check for an inadvertent size of zero bytes */ 355 1.1.1.2.4.2 rmind 356 1.1.1.2.4.2 rmind if (!Size) 357 1.1.1.2.4.2 rmind { 358 1.1.1.2.4.2 rmind ACPI_WARNING ((Module, Line, 359 1.1.1.2.4.2 rmind "Attempt to allocate zero bytes, allocating 1 byte")); 360 1.1.1.2.4.2 rmind Size = 1; 361 1.1.1.2.4.2 rmind } 362 1.1.1.2.4.2 rmind 363 1.1.1.2.4.2 rmind Allocation = AcpiOsAllocate (Size); 364 1.1.1.2.4.2 rmind if (!Allocation) 365 1.1.1.2.4.2 rmind { 366 1.1.1.2.4.2 rmind /* Report allocation error */ 367 1.1.1.2.4.2 rmind 368 1.1.1.2.4.2 rmind ACPI_WARNING ((Module, Line, 369 1.1.1.2.4.2 rmind "Could not allocate size %u", (UINT32) Size)); 370 1.1.1.2.4.2 rmind 371 1.1.1.2.4.2 rmind return_PTR (NULL); 372 1.1.1.2.4.2 rmind } 373 1.1.1.2.4.2 rmind 374 1.1.1.2.4.2 rmind return_PTR (Allocation); 375 1.1.1.2.4.2 rmind } 376 1.1.1.2.4.2 rmind 377 1.1.1.2.4.2 rmind 378 1.1.1.2.4.2 rmind /******************************************************************************* 379 1.1.1.2.4.2 rmind * 380 1.1.1.2.4.2 rmind * FUNCTION: AcpiUtAllocateZeroed 381 1.1.1.2.4.2 rmind * 382 1.1.1.2.4.2 rmind * PARAMETERS: Size - Size of the allocation 383 1.1.1.2.4.2 rmind * Component - Component type of caller 384 1.1.1.2.4.2 rmind * Module - Source file name of caller 385 1.1.1.2.4.2 rmind * Line - Line number of caller 386 1.1.1.2.4.2 rmind * 387 1.1.1.2.4.2 rmind * RETURN: Address of the allocated memory on success, NULL on failure. 388 1.1.1.2.4.2 rmind * 389 1.1.1.2.4.2 rmind * DESCRIPTION: Subsystem equivalent of calloc. Allocate and zero memory. 390 1.1.1.2.4.2 rmind * 391 1.1.1.2.4.2 rmind ******************************************************************************/ 392 1.1.1.2.4.2 rmind 393 1.1.1.2.4.2 rmind void * 394 1.1.1.2.4.2 rmind AcpiUtAllocateZeroed ( 395 1.1.1.2.4.2 rmind ACPI_SIZE Size, 396 1.1.1.2.4.2 rmind UINT32 Component, 397 1.1.1.2.4.2 rmind const char *Module, 398 1.1.1.2.4.2 rmind UINT32 Line) 399 1.1.1.2.4.2 rmind { 400 1.1.1.2.4.2 rmind void *Allocation; 401 1.1.1.2.4.2 rmind 402 1.1.1.2.4.2 rmind 403 1.1.1.2.4.2 rmind ACPI_FUNCTION_ENTRY (); 404 1.1.1.2.4.2 rmind 405 1.1.1.2.4.2 rmind 406 1.1.1.2.4.2 rmind Allocation = AcpiUtAllocate (Size, Component, Module, Line); 407 1.1.1.2.4.2 rmind if (Allocation) 408 1.1.1.2.4.2 rmind { 409 1.1.1.2.4.2 rmind /* Clear the memory block */ 410 1.1.1.2.4.2 rmind 411 1.1.1.2.4.2 rmind ACPI_MEMSET (Allocation, 0, Size); 412 1.1.1.2.4.2 rmind } 413 1.1.1.2.4.2 rmind 414 1.1.1.2.4.2 rmind return (Allocation); 415 1.1.1.2.4.2 rmind } 416 1.1.1.2.4.2 rmind 417
Indexes created Wed Oct 01 13:09:50 GMT 2025