TUKS MCU Introductory course / TUKS-COURSE-TIMER

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

mbed-dev/platform/mbed_mem_trace.c@1:d0dfbce63a89, 2017-02-24 (annotated)

Committer:
elmot
Date:
Fri Feb 24 21:13:56 2017 +0000
Revision:
1:d0dfbce63a89
Ready-to-copy

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elmot 1:d0dfbce63a89 1 /* mbed Microcontroller Library
elmot 1:d0dfbce63a89 2 * Copyright (c) 2006-2016 ARM Limited
elmot 1:d0dfbce63a89 3 *
elmot 1:d0dfbce63a89 4 * Licensed under the Apache License, Version 2.0 (the "License");
elmot 1:d0dfbce63a89 5 * you may not use this file except in compliance with the License.
elmot 1:d0dfbce63a89 6 * You may obtain a copy of the License at
elmot 1:d0dfbce63a89 7 *
elmot 1:d0dfbce63a89 8 * http://www.apache.org/licenses/LICENSE-2.0
elmot 1:d0dfbce63a89 9 *
elmot 1:d0dfbce63a89 10 * Unless required by applicable law or agreed to in writing, software
elmot 1:d0dfbce63a89 11 * distributed under the License is distributed on an "AS IS" BASIS,
elmot 1:d0dfbce63a89 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elmot 1:d0dfbce63a89 13 * See the License for the specific language governing permissions and
elmot 1:d0dfbce63a89 14 * limitations under the License.
elmot 1:d0dfbce63a89 15 */
elmot 1:d0dfbce63a89 16
elmot 1:d0dfbce63a89 17 #include <stdlib.h>
elmot 1:d0dfbce63a89 18 #include <stdarg.h>
elmot 1:d0dfbce63a89 19 #include <stdio.h>
elmot 1:d0dfbce63a89 20 #include "platform/mbed_mem_trace.h"
elmot 1:d0dfbce63a89 21 #include "platform/critical.h"
elmot 1:d0dfbce63a89 22
elmot 1:d0dfbce63a89 23 /******************************************************************************
elmot 1:d0dfbce63a89 24 * Internal variables, functions and helpers
elmot 1:d0dfbce63a89 25 *****************************************************************************/
elmot 1:d0dfbce63a89 26
elmot 1:d0dfbce63a89 27 /* The callback function that will be called after a traced memory operations finishes. */
elmot 1:d0dfbce63a89 28 static mbed_mem_trace_cb_t mem_trace_cb;
elmot 1:d0dfbce63a89 29 /* 'trave_level' guards "trace inside trace" situations (for example, the implementation
elmot 1:d0dfbce63a89 30 * of realloc() might call malloc() internally, and since malloc() is also traced, this could
elmot 1:d0dfbce63a89 31 * result in two calls to the callback function instead of one. */
elmot 1:d0dfbce63a89 32 static uint8_t trace_level;
elmot 1:d0dfbce63a89 33
elmot 1:d0dfbce63a89 34 /******************************************************************************
elmot 1:d0dfbce63a89 35 * Public interface
elmot 1:d0dfbce63a89 36 *****************************************************************************/
elmot 1:d0dfbce63a89 37
elmot 1:d0dfbce63a89 38 void mbed_mem_trace_set_callback(mbed_mem_trace_cb_t cb) {
elmot 1:d0dfbce63a89 39 mem_trace_cb = cb;
elmot 1:d0dfbce63a89 40 }
elmot 1:d0dfbce63a89 41
elmot 1:d0dfbce63a89 42 void *mbed_mem_trace_malloc(void *res, size_t size, void *caller) {
elmot 1:d0dfbce63a89 43 if (mem_trace_cb) {
elmot 1:d0dfbce63a89 44 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
elmot 1:d0dfbce63a89 45 mem_trace_cb(MBED_MEM_TRACE_MALLOC, res, caller, size);
elmot 1:d0dfbce63a89 46 }
elmot 1:d0dfbce63a89 47 core_util_atomic_decr_u8(&trace_level, 1);
elmot 1:d0dfbce63a89 48 }
elmot 1:d0dfbce63a89 49 return res;
elmot 1:d0dfbce63a89 50 }
elmot 1:d0dfbce63a89 51
elmot 1:d0dfbce63a89 52 void *mbed_mem_trace_realloc(void *res, void *ptr, size_t size, void *caller) {
elmot 1:d0dfbce63a89 53 if (mem_trace_cb) {
elmot 1:d0dfbce63a89 54 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
elmot 1:d0dfbce63a89 55 mem_trace_cb(MBED_MEM_TRACE_REALLOC, res, caller, ptr, size);
elmot 1:d0dfbce63a89 56 }
elmot 1:d0dfbce63a89 57 core_util_atomic_decr_u8(&trace_level, 1);
elmot 1:d0dfbce63a89 58 }
elmot 1:d0dfbce63a89 59 return res;
elmot 1:d0dfbce63a89 60 }
elmot 1:d0dfbce63a89 61
elmot 1:d0dfbce63a89 62 void *mbed_mem_trace_calloc(void *res, size_t num, size_t size, void *caller) {
elmot 1:d0dfbce63a89 63 if (mem_trace_cb) {
elmot 1:d0dfbce63a89 64 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
elmot 1:d0dfbce63a89 65 mem_trace_cb(MBED_MEM_TRACE_CALLOC, res, caller, num, size);
elmot 1:d0dfbce63a89 66 }
elmot 1:d0dfbce63a89 67 core_util_atomic_decr_u8(&trace_level, 1);
elmot 1:d0dfbce63a89 68 }
elmot 1:d0dfbce63a89 69 return res;
elmot 1:d0dfbce63a89 70 }
elmot 1:d0dfbce63a89 71
elmot 1:d0dfbce63a89 72 void mbed_mem_trace_free(void *ptr, void *caller) {
elmot 1:d0dfbce63a89 73 if (mem_trace_cb) {
elmot 1:d0dfbce63a89 74 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
elmot 1:d0dfbce63a89 75 mem_trace_cb(MBED_MEM_TRACE_FREE, NULL, caller, ptr);
elmot 1:d0dfbce63a89 76 }
elmot 1:d0dfbce63a89 77 core_util_atomic_decr_u8(&trace_level, 1);
elmot 1:d0dfbce63a89 78 }
elmot 1:d0dfbce63a89 79 }
elmot 1:d0dfbce63a89 80
elmot 1:d0dfbce63a89 81 void mbed_mem_trace_default_callback(uint8_t op, void *res, void *caller, ...) {
elmot 1:d0dfbce63a89 82 va_list va;
elmot 1:d0dfbce63a89 83 size_t temp_s1, temp_s2;
elmot 1:d0dfbce63a89 84 void *temp_ptr;
elmot 1:d0dfbce63a89 85
elmot 1:d0dfbce63a89 86 va_start(va, caller);
elmot 1:d0dfbce63a89 87 switch(op) {
elmot 1:d0dfbce63a89 88 case MBED_MEM_TRACE_MALLOC:
elmot 1:d0dfbce63a89 89 temp_s1 = va_arg(va, size_t);
elmot 1:d0dfbce63a89 90 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "m:%p;%p-%u\n", res, caller, temp_s1);
elmot 1:d0dfbce63a89 91 break;
elmot 1:d0dfbce63a89 92
elmot 1:d0dfbce63a89 93 case MBED_MEM_TRACE_REALLOC:
elmot 1:d0dfbce63a89 94 temp_ptr = va_arg(va, void*);
elmot 1:d0dfbce63a89 95 temp_s1 = va_arg(va, size_t);
elmot 1:d0dfbce63a89 96 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "r:%p;%p-%p;%u\n", res, caller, temp_ptr, temp_s1);
elmot 1:d0dfbce63a89 97 break;
elmot 1:d0dfbce63a89 98
elmot 1:d0dfbce63a89 99 case MBED_MEM_TRACE_CALLOC:
elmot 1:d0dfbce63a89 100 temp_s1 = va_arg(va, size_t);
elmot 1:d0dfbce63a89 101 temp_s2 = va_arg(va, size_t);
elmot 1:d0dfbce63a89 102 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "c:%p;%p-%u;%u\n", res, caller, temp_s1, temp_s2);
elmot 1:d0dfbce63a89 103 break;
elmot 1:d0dfbce63a89 104
elmot 1:d0dfbce63a89 105 case MBED_MEM_TRACE_FREE:
elmot 1:d0dfbce63a89 106 temp_ptr = va_arg(va, void*);
elmot 1:d0dfbce63a89 107 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "f:%p;%p-%p\n", res, caller, temp_ptr);
elmot 1:d0dfbce63a89 108 break;
elmot 1:d0dfbce63a89 109
elmot 1:d0dfbce63a89 110 default:
elmot 1:d0dfbce63a89 111 printf("?\n");
elmot 1:d0dfbce63a89 112 }
elmot 1:d0dfbce63a89 113 va_end(va);
elmot 1:d0dfbce63a89 114 }
elmot 1:d0dfbce63a89 115