Gan likun / mbed-dev11

platform/mbed_alloc_wrappers.cpp@0:06036f8bee2d, 2022-10-24 (annotated)

Committer:
ganlikun
Date:
Mon Oct 24 15:19:39 2022 +0000
Revision:
0:06036f8bee2d
11

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ganlikun 0:06036f8bee2d 1 /* mbed Microcontroller Library
ganlikun 0:06036f8bee2d 2 * Copyright (c) 2006-2016 ARM Limited
ganlikun 0:06036f8bee2d 3 *
ganlikun 0:06036f8bee2d 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:06036f8bee2d 5 * you may not use this file except in compliance with the License.
ganlikun 0:06036f8bee2d 6 * You may obtain a copy of the License at
ganlikun 0:06036f8bee2d 7 *
ganlikun 0:06036f8bee2d 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:06036f8bee2d 9 *
ganlikun 0:06036f8bee2d 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:06036f8bee2d 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:06036f8bee2d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:06036f8bee2d 13 * See the License for the specific language governing permissions and
ganlikun 0:06036f8bee2d 14 * limitations under the License.
ganlikun 0:06036f8bee2d 15 */
ganlikun 0:06036f8bee2d 16
ganlikun 0:06036f8bee2d 17 #include "platform/mbed_mem_trace.h"
ganlikun 0:06036f8bee2d 18 #include "platform/mbed_stats.h"
ganlikun 0:06036f8bee2d 19 #include "platform/mbed_toolchain.h"
ganlikun 0:06036f8bee2d 20 #include "platform/SingletonPtr.h"
ganlikun 0:06036f8bee2d 21 #include "platform/PlatformMutex.h"
ganlikun 0:06036f8bee2d 22 #include <stddef.h>
ganlikun 0:06036f8bee2d 23 #include <stdio.h>
ganlikun 0:06036f8bee2d 24 #include <string.h>
ganlikun 0:06036f8bee2d 25 #include <stdlib.h>
ganlikun 0:06036f8bee2d 26
ganlikun 0:06036f8bee2d 27 /* There are two memory tracers in mbed OS:
ganlikun 0:06036f8bee2d 28
ganlikun 0:06036f8bee2d 29 - the first can be used to detect the maximum heap usage at runtime. It is
ganlikun 0:06036f8bee2d 30 activated by defining the MBED_HEAP_STATS_ENABLED macro.
ganlikun 0:06036f8bee2d 31 - the second can be used to trace each memory call by automatically invoking
ganlikun 0:06036f8bee2d 32 a callback on each memory operation (see hal/api/mbed_mem_trace.h). It is
ganlikun 0:06036f8bee2d 33 activated by defining the MBED_MEM_TRACING_ENABLED macro.
ganlikun 0:06036f8bee2d 34
ganlikun 0:06036f8bee2d 35 Both tracers can be activated and deactivated in any combination. If both tracers
ganlikun 0:06036f8bee2d 36 are active, the second one (MBED_MEM_TRACING_ENABLED) will trace the first one's
ganlikun 0:06036f8bee2d 37 (MBED_HEAP_STATS_ENABLED) memory calls.*/
ganlikun 0:06036f8bee2d 38
ganlikun 0:06036f8bee2d 39 /******************************************************************************/
ganlikun 0:06036f8bee2d 40 /* Implementation of the runtime max heap usage checker */
ganlikun 0:06036f8bee2d 41 /******************************************************************************/
ganlikun 0:06036f8bee2d 42
ganlikun 0:06036f8bee2d 43 /* Size must be a multiple of 8 to keep alignment */
ganlikun 0:06036f8bee2d 44 typedef struct {
ganlikun 0:06036f8bee2d 45 uint32_t size;
ganlikun 0:06036f8bee2d 46 uint32_t pad;
ganlikun 0:06036f8bee2d 47 } alloc_info_t;
ganlikun 0:06036f8bee2d 48
ganlikun 0:06036f8bee2d 49 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 50 static SingletonPtr<PlatformMutex> mem_trace_mutex;
ganlikun 0:06036f8bee2d 51 #endif
ganlikun 0:06036f8bee2d 52 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 53 static SingletonPtr<PlatformMutex> malloc_stats_mutex;
ganlikun 0:06036f8bee2d 54 static mbed_stats_heap_t heap_stats = {0, 0, 0, 0, 0};
ganlikun 0:06036f8bee2d 55 #endif
ganlikun 0:06036f8bee2d 56
ganlikun 0:06036f8bee2d 57 void mbed_stats_heap_get(mbed_stats_heap_t *stats)
ganlikun 0:06036f8bee2d 58 {
ganlikun 0:06036f8bee2d 59 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 60 extern uint32_t mbed_heap_size;
ganlikun 0:06036f8bee2d 61 heap_stats.reserved_size = mbed_heap_size;
ganlikun 0:06036f8bee2d 62
ganlikun 0:06036f8bee2d 63 malloc_stats_mutex->lock();
ganlikun 0:06036f8bee2d 64 memcpy(stats, &heap_stats, sizeof(mbed_stats_heap_t));
ganlikun 0:06036f8bee2d 65 malloc_stats_mutex->unlock();
ganlikun 0:06036f8bee2d 66 #else
ganlikun 0:06036f8bee2d 67 memset(stats, 0, sizeof(mbed_stats_heap_t));
ganlikun 0:06036f8bee2d 68 #endif
ganlikun 0:06036f8bee2d 69 }
ganlikun 0:06036f8bee2d 70
ganlikun 0:06036f8bee2d 71 /******************************************************************************/
ganlikun 0:06036f8bee2d 72 /* GCC memory allocation wrappers */
ganlikun 0:06036f8bee2d 73 /******************************************************************************/
ganlikun 0:06036f8bee2d 74
ganlikun 0:06036f8bee2d 75 #if defined(TOOLCHAIN_GCC)
ganlikun 0:06036f8bee2d 76
ganlikun 0:06036f8bee2d 77 #ifdef FEATURE_UVISOR
ganlikun 0:06036f8bee2d 78 #include "uvisor-lib/uvisor-lib.h"
ganlikun 0:06036f8bee2d 79 #endif/* FEATURE_UVISOR */
ganlikun 0:06036f8bee2d 80
ganlikun 0:06036f8bee2d 81 extern "C" {
ganlikun 0:06036f8bee2d 82 void * __real__malloc_r(struct _reent * r, size_t size);
ganlikun 0:06036f8bee2d 83 void * __real__memalign_r(struct _reent * r, size_t alignment, size_t bytes);
ganlikun 0:06036f8bee2d 84 void * __real__realloc_r(struct _reent * r, void * ptr, size_t size);
ganlikun 0:06036f8bee2d 85 void __real__free_r(struct _reent * r, void * ptr);
ganlikun 0:06036f8bee2d 86 void* __real__calloc_r(struct _reent * r, size_t nmemb, size_t size);
ganlikun 0:06036f8bee2d 87 }
ganlikun 0:06036f8bee2d 88
ganlikun 0:06036f8bee2d 89 // TODO: memory tracing doesn't work with uVisor enabled.
ganlikun 0:06036f8bee2d 90 #if !defined(FEATURE_UVISOR)
ganlikun 0:06036f8bee2d 91
ganlikun 0:06036f8bee2d 92 extern "C" void * __wrap__malloc_r(struct _reent * r, size_t size) {
ganlikun 0:06036f8bee2d 93 void *ptr = NULL;
ganlikun 0:06036f8bee2d 94 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 95 malloc_stats_mutex->lock();
ganlikun 0:06036f8bee2d 96 alloc_info_t *alloc_info = (alloc_info_t*)__real__malloc_r(r, size + sizeof(alloc_info_t));
ganlikun 0:06036f8bee2d 97 if (alloc_info != NULL) {
ganlikun 0:06036f8bee2d 98 alloc_info->size = size;
ganlikun 0:06036f8bee2d 99 ptr = (void*)(alloc_info + 1);
ganlikun 0:06036f8bee2d 100 heap_stats.current_size += size;
ganlikun 0:06036f8bee2d 101 heap_stats.total_size += size;
ganlikun 0:06036f8bee2d 102 heap_stats.alloc_cnt += 1;
ganlikun 0:06036f8bee2d 103 if (heap_stats.current_size > heap_stats.max_size) {
ganlikun 0:06036f8bee2d 104 heap_stats.max_size = heap_stats.current_size;
ganlikun 0:06036f8bee2d 105 }
ganlikun 0:06036f8bee2d 106 } else {
ganlikun 0:06036f8bee2d 107 heap_stats.alloc_fail_cnt += 1;
ganlikun 0:06036f8bee2d 108 }
ganlikun 0:06036f8bee2d 109 malloc_stats_mutex->unlock();
ganlikun 0:06036f8bee2d 110 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 111 ptr = __real__malloc_r(r, size);
ganlikun 0:06036f8bee2d 112 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 113 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 114 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 115 mbed_mem_trace_malloc(ptr, size, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 116 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 117 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 118 return ptr;
ganlikun 0:06036f8bee2d 119 }
ganlikun 0:06036f8bee2d 120
ganlikun 0:06036f8bee2d 121 extern "C" void * __wrap__realloc_r(struct _reent * r, void * ptr, size_t size) {
ganlikun 0:06036f8bee2d 122 void *new_ptr = NULL;
ganlikun 0:06036f8bee2d 123 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 124 // Implement realloc_r with malloc and free.
ganlikun 0:06036f8bee2d 125 // The function realloc_r can't be used here directly since
ganlikun 0:06036f8bee2d 126 // it can call into __wrap__malloc_r (returns ptr + 4) or
ganlikun 0:06036f8bee2d 127 // resize memory directly (returns ptr + 0).
ganlikun 0:06036f8bee2d 128
ganlikun 0:06036f8bee2d 129 // Note - no lock needed since malloc and free are thread safe
ganlikun 0:06036f8bee2d 130
ganlikun 0:06036f8bee2d 131 // Get old size
ganlikun 0:06036f8bee2d 132 uint32_t old_size = 0;
ganlikun 0:06036f8bee2d 133 if (ptr != NULL) {
ganlikun 0:06036f8bee2d 134 alloc_info_t *alloc_info = ((alloc_info_t*)ptr) - 1;
ganlikun 0:06036f8bee2d 135 old_size = alloc_info->size;
ganlikun 0:06036f8bee2d 136 }
ganlikun 0:06036f8bee2d 137
ganlikun 0:06036f8bee2d 138 // Allocate space
ganlikun 0:06036f8bee2d 139 if (size != 0) {
ganlikun 0:06036f8bee2d 140 new_ptr = malloc(size);
ganlikun 0:06036f8bee2d 141 }
ganlikun 0:06036f8bee2d 142
ganlikun 0:06036f8bee2d 143 // If the new buffer has been allocated copy the data to it
ganlikun 0:06036f8bee2d 144 // and free the old buffer
ganlikun 0:06036f8bee2d 145 if (new_ptr != NULL) {
ganlikun 0:06036f8bee2d 146 uint32_t copy_size = (old_size < size) ? old_size : size;
ganlikun 0:06036f8bee2d 147 memcpy(new_ptr, (void*)ptr, copy_size);
ganlikun 0:06036f8bee2d 148 free(ptr);
ganlikun 0:06036f8bee2d 149 }
ganlikun 0:06036f8bee2d 150 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 151 new_ptr = __real__realloc_r(r, ptr, size);
ganlikun 0:06036f8bee2d 152 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 153 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 154 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 155 mbed_mem_trace_realloc(new_ptr, ptr, size, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 156 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 157 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 158 return new_ptr;
ganlikun 0:06036f8bee2d 159 }
ganlikun 0:06036f8bee2d 160
ganlikun 0:06036f8bee2d 161 extern "C" void __wrap__free_r(struct _reent * r, void * ptr) {
ganlikun 0:06036f8bee2d 162 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 163 malloc_stats_mutex->lock();
ganlikun 0:06036f8bee2d 164 alloc_info_t *alloc_info = NULL;
ganlikun 0:06036f8bee2d 165 if (ptr != NULL) {
ganlikun 0:06036f8bee2d 166 alloc_info = ((alloc_info_t*)ptr) - 1;
ganlikun 0:06036f8bee2d 167 heap_stats.current_size -= alloc_info->size;
ganlikun 0:06036f8bee2d 168 heap_stats.alloc_cnt -= 1;
ganlikun 0:06036f8bee2d 169 }
ganlikun 0:06036f8bee2d 170 __real__free_r(r, (void*)alloc_info);
ganlikun 0:06036f8bee2d 171 malloc_stats_mutex->unlock();
ganlikun 0:06036f8bee2d 172 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 173 __real__free_r(r, ptr);
ganlikun 0:06036f8bee2d 174 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 175 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 176 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 177 mbed_mem_trace_free(ptr, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 178 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 179 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 180 }
ganlikun 0:06036f8bee2d 181
ganlikun 0:06036f8bee2d 182 extern "C" void * __wrap__calloc_r(struct _reent * r, size_t nmemb, size_t size) {
ganlikun 0:06036f8bee2d 183 void *ptr = NULL;
ganlikun 0:06036f8bee2d 184 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 185 // Note - no lock needed since malloc is thread safe
ganlikun 0:06036f8bee2d 186
ganlikun 0:06036f8bee2d 187 ptr = malloc(nmemb * size);
ganlikun 0:06036f8bee2d 188 if (ptr != NULL) {
ganlikun 0:06036f8bee2d 189 memset(ptr, 0, nmemb * size);
ganlikun 0:06036f8bee2d 190 }
ganlikun 0:06036f8bee2d 191 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 192 ptr = __real__calloc_r(r, nmemb, size);
ganlikun 0:06036f8bee2d 193 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 194 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 195 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 196 mbed_mem_trace_calloc(ptr, nmemb, size, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 197 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 198 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 199 return ptr;
ganlikun 0:06036f8bee2d 200 }
ganlikun 0:06036f8bee2d 201
ganlikun 0:06036f8bee2d 202 extern "C" void * __wrap__memalign_r(struct _reent * r, size_t alignment, size_t bytes) {
ganlikun 0:06036f8bee2d 203 return __real__memalign_r(r, alignment, bytes);
ganlikun 0:06036f8bee2d 204 }
ganlikun 0:06036f8bee2d 205
ganlikun 0:06036f8bee2d 206 #endif // if !defined(FEATURE_UVISOR)
ganlikun 0:06036f8bee2d 207
ganlikun 0:06036f8bee2d 208
ganlikun 0:06036f8bee2d 209 /******************************************************************************/
ganlikun 0:06036f8bee2d 210 /* ARMCC / IAR memory allocation wrappers */
ganlikun 0:06036f8bee2d 211 /******************************************************************************/
ganlikun 0:06036f8bee2d 212
ganlikun 0:06036f8bee2d 213 #elif defined(TOOLCHAIN_ARM) || defined(__ICCARM__)
ganlikun 0:06036f8bee2d 214
ganlikun 0:06036f8bee2d 215 #if defined(TOOLCHAIN_ARM)
ganlikun 0:06036f8bee2d 216 #define SUPER_MALLOC $Super$$malloc
ganlikun 0:06036f8bee2d 217 #define SUB_MALLOC $Sub$$malloc
ganlikun 0:06036f8bee2d 218 #define SUPER_REALLOC $Super$$realloc
ganlikun 0:06036f8bee2d 219 #define SUB_REALLOC $Sub$$realloc
ganlikun 0:06036f8bee2d 220 #define SUPER_CALLOC $Super$$calloc
ganlikun 0:06036f8bee2d 221 #define SUB_CALLOC $Sub$$calloc
ganlikun 0:06036f8bee2d 222 #define SUPER_FREE $Super$$free
ganlikun 0:06036f8bee2d 223 #define SUB_FREE $Sub$$free
ganlikun 0:06036f8bee2d 224 #elif defined(__ICCARM__)
ganlikun 0:06036f8bee2d 225 #define SUPER_MALLOC $Super$$__iar_dlmalloc
ganlikun 0:06036f8bee2d 226 #define SUB_MALLOC $Sub$$__iar_dlmalloc
ganlikun 0:06036f8bee2d 227 #define SUPER_REALLOC $Super$$__iar_dlrealloc
ganlikun 0:06036f8bee2d 228 #define SUB_REALLOC $Sub$$__iar_dlrealloc
ganlikun 0:06036f8bee2d 229 #define SUPER_CALLOC $Super$$__iar_dlcalloc
ganlikun 0:06036f8bee2d 230 #define SUB_CALLOC $Sub$$__iar_dlcalloc
ganlikun 0:06036f8bee2d 231 #define SUPER_FREE $Super$$__iar_dlfree
ganlikun 0:06036f8bee2d 232 #define SUB_FREE $Sub$$__iar_dlfree
ganlikun 0:06036f8bee2d 233 #endif
ganlikun 0:06036f8bee2d 234
ganlikun 0:06036f8bee2d 235 /* Enable hooking of memory function only if tracing is also enabled */
ganlikun 0:06036f8bee2d 236 #if defined(MBED_MEM_TRACING_ENABLED) || defined(MBED_HEAP_STATS_ENABLED)
ganlikun 0:06036f8bee2d 237
ganlikun 0:06036f8bee2d 238 extern "C" {
ganlikun 0:06036f8bee2d 239 void *SUPER_MALLOC(size_t size);
ganlikun 0:06036f8bee2d 240 void *SUPER_REALLOC(void *ptr, size_t size);
ganlikun 0:06036f8bee2d 241 void *SUPER_CALLOC(size_t nmemb, size_t size);
ganlikun 0:06036f8bee2d 242 void SUPER_FREE(void *ptr);
ganlikun 0:06036f8bee2d 243 }
ganlikun 0:06036f8bee2d 244
ganlikun 0:06036f8bee2d 245 extern "C" void* SUB_MALLOC(size_t size) {
ganlikun 0:06036f8bee2d 246 void *ptr = NULL;
ganlikun 0:06036f8bee2d 247 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 248 malloc_stats_mutex->lock();
ganlikun 0:06036f8bee2d 249 alloc_info_t *alloc_info = (alloc_info_t*)SUPER_MALLOC(size + sizeof(alloc_info_t));
ganlikun 0:06036f8bee2d 250 if (alloc_info != NULL) {
ganlikun 0:06036f8bee2d 251 alloc_info->size = size;
ganlikun 0:06036f8bee2d 252 ptr = (void*)(alloc_info + 1);
ganlikun 0:06036f8bee2d 253 heap_stats.current_size += size;
ganlikun 0:06036f8bee2d 254 heap_stats.total_size += size;
ganlikun 0:06036f8bee2d 255 heap_stats.alloc_cnt += 1;
ganlikun 0:06036f8bee2d 256 if (heap_stats.current_size > heap_stats.max_size) {
ganlikun 0:06036f8bee2d 257 heap_stats.max_size = heap_stats.current_size;
ganlikun 0:06036f8bee2d 258 }
ganlikun 0:06036f8bee2d 259 } else {
ganlikun 0:06036f8bee2d 260 heap_stats.alloc_fail_cnt += 1;
ganlikun 0:06036f8bee2d 261 }
ganlikun 0:06036f8bee2d 262 malloc_stats_mutex->unlock();
ganlikun 0:06036f8bee2d 263 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 264 ptr = SUPER_MALLOC(size);
ganlikun 0:06036f8bee2d 265 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 266 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 267 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 268 mbed_mem_trace_malloc(ptr, size, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 269 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 270 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 271 return ptr;
ganlikun 0:06036f8bee2d 272 }
ganlikun 0:06036f8bee2d 273
ganlikun 0:06036f8bee2d 274 extern "C" void* SUB_REALLOC(void *ptr, size_t size) {
ganlikun 0:06036f8bee2d 275 void *new_ptr = NULL;
ganlikun 0:06036f8bee2d 276 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 277 // Note - no lock needed since malloc and free are thread safe
ganlikun 0:06036f8bee2d 278
ganlikun 0:06036f8bee2d 279 // Get old size
ganlikun 0:06036f8bee2d 280 uint32_t old_size = 0;
ganlikun 0:06036f8bee2d 281 if (ptr != NULL) {
ganlikun 0:06036f8bee2d 282 alloc_info_t *alloc_info = ((alloc_info_t*)ptr) - 1;
ganlikun 0:06036f8bee2d 283 old_size = alloc_info->size;
ganlikun 0:06036f8bee2d 284 }
ganlikun 0:06036f8bee2d 285
ganlikun 0:06036f8bee2d 286 // Allocate space
ganlikun 0:06036f8bee2d 287 if (size != 0) {
ganlikun 0:06036f8bee2d 288 new_ptr = malloc(size);
ganlikun 0:06036f8bee2d 289 }
ganlikun 0:06036f8bee2d 290
ganlikun 0:06036f8bee2d 291 // If the new buffer has been allocated copy the data to it
ganlikun 0:06036f8bee2d 292 // and free the old buffer
ganlikun 0:06036f8bee2d 293 if (new_ptr != NULL) {
ganlikun 0:06036f8bee2d 294 uint32_t copy_size = (old_size < size) ? old_size : size;
ganlikun 0:06036f8bee2d 295 memcpy(new_ptr, (void*)ptr, copy_size);
ganlikun 0:06036f8bee2d 296 free(ptr);
ganlikun 0:06036f8bee2d 297 }
ganlikun 0:06036f8bee2d 298 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 299 new_ptr = SUPER_REALLOC(ptr, size);
ganlikun 0:06036f8bee2d 300 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 301 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 302 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 303 mbed_mem_trace_realloc(new_ptr, ptr, size, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 304 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 305 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 306 return new_ptr;
ganlikun 0:06036f8bee2d 307 }
ganlikun 0:06036f8bee2d 308
ganlikun 0:06036f8bee2d 309 extern "C" void *SUB_CALLOC(size_t nmemb, size_t size) {
ganlikun 0:06036f8bee2d 310 void *ptr = NULL;
ganlikun 0:06036f8bee2d 311 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 312 // Note - no lock needed since malloc is thread safe
ganlikun 0:06036f8bee2d 313 ptr = malloc(nmemb * size);
ganlikun 0:06036f8bee2d 314 if (ptr != NULL) {
ganlikun 0:06036f8bee2d 315 memset(ptr, 0, nmemb * size);
ganlikun 0:06036f8bee2d 316 }
ganlikun 0:06036f8bee2d 317 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 318 ptr = SUPER_CALLOC(nmemb, size);
ganlikun 0:06036f8bee2d 319 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 320 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 321 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 322 mbed_mem_trace_calloc(ptr, nmemb, size, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 323 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 324 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 325 return ptr;
ganlikun 0:06036f8bee2d 326 }
ganlikun 0:06036f8bee2d 327
ganlikun 0:06036f8bee2d 328 extern "C" void SUB_FREE(void *ptr) {
ganlikun 0:06036f8bee2d 329 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 330 malloc_stats_mutex->lock();
ganlikun 0:06036f8bee2d 331 alloc_info_t *alloc_info = NULL;
ganlikun 0:06036f8bee2d 332 if (ptr != NULL) {
ganlikun 0:06036f8bee2d 333 alloc_info = ((alloc_info_t*)ptr) - 1;
ganlikun 0:06036f8bee2d 334 heap_stats.current_size -= alloc_info->size;
ganlikun 0:06036f8bee2d 335 heap_stats.alloc_cnt -= 1;
ganlikun 0:06036f8bee2d 336 }
ganlikun 0:06036f8bee2d 337 SUPER_FREE((void*)alloc_info);
ganlikun 0:06036f8bee2d 338 malloc_stats_mutex->unlock();
ganlikun 0:06036f8bee2d 339 #else // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 340 SUPER_FREE(ptr);
ganlikun 0:06036f8bee2d 341 #endif // #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 342 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 343 mem_trace_mutex->lock();
ganlikun 0:06036f8bee2d 344 mbed_mem_trace_free(ptr, MBED_CALLER_ADDR());
ganlikun 0:06036f8bee2d 345 mem_trace_mutex->unlock();
ganlikun 0:06036f8bee2d 346 #endif // #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 347 }
ganlikun 0:06036f8bee2d 348
ganlikun 0:06036f8bee2d 349 #endif // #if defined(MBED_MEM_TRACING_ENABLED) || defined(MBED_HEAP_STATS_ENABLED)
ganlikun 0:06036f8bee2d 350
ganlikun 0:06036f8bee2d 351 /******************************************************************************/
ganlikun 0:06036f8bee2d 352 /* Allocation wrappers for other toolchains are not supported yet */
ganlikun 0:06036f8bee2d 353 /******************************************************************************/
ganlikun 0:06036f8bee2d 354
ganlikun 0:06036f8bee2d 355 #else
ganlikun 0:06036f8bee2d 356
ganlikun 0:06036f8bee2d 357 #ifdef MBED_MEM_TRACING_ENABLED
ganlikun 0:06036f8bee2d 358 #error Memory tracing is not supported with the current toolchain.
ganlikun 0:06036f8bee2d 359 #endif
ganlikun 0:06036f8bee2d 360
ganlikun 0:06036f8bee2d 361 #ifdef MBED_HEAP_STATS_ENABLED
ganlikun 0:06036f8bee2d 362 #error Heap statistics are not supported with the current toolchain.
ganlikun 0:06036f8bee2d 363 #endif
ganlikun 0:06036f8bee2d 364
ganlikun 0:06036f8bee2d 365 #endif // #if defined(TOOLCHAIN_GCC)
ganlikun 0:06036f8bee2d 366