Gan likun / mbed-dev11

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

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

Who changed what in which revision?

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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 <stdlib.h>
ganlikun 0:06036f8bee2d 18 #include <stdarg.h>
ganlikun 0:06036f8bee2d 19 #include <stdio.h>
ganlikun 0:06036f8bee2d 20 #include "platform/mbed_mem_trace.h"
ganlikun 0:06036f8bee2d 21 #include "platform/mbed_critical.h"
ganlikun 0:06036f8bee2d 22
ganlikun 0:06036f8bee2d 23 /******************************************************************************
ganlikun 0:06036f8bee2d 24 * Internal variables, functions and helpers
ganlikun 0:06036f8bee2d 25 *****************************************************************************/
ganlikun 0:06036f8bee2d 26
ganlikun 0:06036f8bee2d 27 /* The callback function that will be called after a traced memory operations finishes. */
ganlikun 0:06036f8bee2d 28 static mbed_mem_trace_cb_t mem_trace_cb;
ganlikun 0:06036f8bee2d 29 /* 'trave_level' guards "trace inside trace" situations (for example, the implementation
ganlikun 0:06036f8bee2d 30 * of realloc() might call malloc() internally, and since malloc() is also traced, this could
ganlikun 0:06036f8bee2d 31 * result in two calls to the callback function instead of one. */
ganlikun 0:06036f8bee2d 32 static uint8_t trace_level;
ganlikun 0:06036f8bee2d 33
ganlikun 0:06036f8bee2d 34 /******************************************************************************
ganlikun 0:06036f8bee2d 35 * Public interface
ganlikun 0:06036f8bee2d 36 *****************************************************************************/
ganlikun 0:06036f8bee2d 37
ganlikun 0:06036f8bee2d 38 void mbed_mem_trace_set_callback(mbed_mem_trace_cb_t cb) {
ganlikun 0:06036f8bee2d 39 mem_trace_cb = cb;
ganlikun 0:06036f8bee2d 40 }
ganlikun 0:06036f8bee2d 41
ganlikun 0:06036f8bee2d 42 void *mbed_mem_trace_malloc(void *res, size_t size, void *caller) {
ganlikun 0:06036f8bee2d 43 if (mem_trace_cb) {
ganlikun 0:06036f8bee2d 44 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
ganlikun 0:06036f8bee2d 45 mem_trace_cb(MBED_MEM_TRACE_MALLOC, res, caller, size);
ganlikun 0:06036f8bee2d 46 }
ganlikun 0:06036f8bee2d 47 core_util_atomic_decr_u8(&trace_level, 1);
ganlikun 0:06036f8bee2d 48 }
ganlikun 0:06036f8bee2d 49 return res;
ganlikun 0:06036f8bee2d 50 }
ganlikun 0:06036f8bee2d 51
ganlikun 0:06036f8bee2d 52 void *mbed_mem_trace_realloc(void *res, void *ptr, size_t size, void *caller) {
ganlikun 0:06036f8bee2d 53 if (mem_trace_cb) {
ganlikun 0:06036f8bee2d 54 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
ganlikun 0:06036f8bee2d 55 mem_trace_cb(MBED_MEM_TRACE_REALLOC, res, caller, ptr, size);
ganlikun 0:06036f8bee2d 56 }
ganlikun 0:06036f8bee2d 57 core_util_atomic_decr_u8(&trace_level, 1);
ganlikun 0:06036f8bee2d 58 }
ganlikun 0:06036f8bee2d 59 return res;
ganlikun 0:06036f8bee2d 60 }
ganlikun 0:06036f8bee2d 61
ganlikun 0:06036f8bee2d 62 void *mbed_mem_trace_calloc(void *res, size_t num, size_t size, void *caller) {
ganlikun 0:06036f8bee2d 63 if (mem_trace_cb) {
ganlikun 0:06036f8bee2d 64 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
ganlikun 0:06036f8bee2d 65 mem_trace_cb(MBED_MEM_TRACE_CALLOC, res, caller, num, size);
ganlikun 0:06036f8bee2d 66 }
ganlikun 0:06036f8bee2d 67 core_util_atomic_decr_u8(&trace_level, 1);
ganlikun 0:06036f8bee2d 68 }
ganlikun 0:06036f8bee2d 69 return res;
ganlikun 0:06036f8bee2d 70 }
ganlikun 0:06036f8bee2d 71
ganlikun 0:06036f8bee2d 72 void mbed_mem_trace_free(void *ptr, void *caller) {
ganlikun 0:06036f8bee2d 73 if (mem_trace_cb) {
ganlikun 0:06036f8bee2d 74 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
ganlikun 0:06036f8bee2d 75 mem_trace_cb(MBED_MEM_TRACE_FREE, NULL, caller, ptr);
ganlikun 0:06036f8bee2d 76 }
ganlikun 0:06036f8bee2d 77 core_util_atomic_decr_u8(&trace_level, 1);
ganlikun 0:06036f8bee2d 78 }
ganlikun 0:06036f8bee2d 79 }
ganlikun 0:06036f8bee2d 80
ganlikun 0:06036f8bee2d 81 void mbed_mem_trace_default_callback(uint8_t op, void *res, void *caller, ...) {
ganlikun 0:06036f8bee2d 82 va_list va;
ganlikun 0:06036f8bee2d 83 size_t temp_s1, temp_s2;
ganlikun 0:06036f8bee2d 84 void *temp_ptr;
ganlikun 0:06036f8bee2d 85
ganlikun 0:06036f8bee2d 86 va_start(va, caller);
ganlikun 0:06036f8bee2d 87 switch(op) {
ganlikun 0:06036f8bee2d 88 case MBED_MEM_TRACE_MALLOC:
ganlikun 0:06036f8bee2d 89 temp_s1 = va_arg(va, size_t);
ganlikun 0:06036f8bee2d 90 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "m:%p;%p-%u\n", res, caller, temp_s1);
ganlikun 0:06036f8bee2d 91 break;
ganlikun 0:06036f8bee2d 92
ganlikun 0:06036f8bee2d 93 case MBED_MEM_TRACE_REALLOC:
ganlikun 0:06036f8bee2d 94 temp_ptr = va_arg(va, void*);
ganlikun 0:06036f8bee2d 95 temp_s1 = va_arg(va, size_t);
ganlikun 0:06036f8bee2d 96 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "r:%p;%p-%p;%u\n", res, caller, temp_ptr, temp_s1);
ganlikun 0:06036f8bee2d 97 break;
ganlikun 0:06036f8bee2d 98
ganlikun 0:06036f8bee2d 99 case MBED_MEM_TRACE_CALLOC:
ganlikun 0:06036f8bee2d 100 temp_s1 = va_arg(va, size_t);
ganlikun 0:06036f8bee2d 101 temp_s2 = va_arg(va, size_t);
ganlikun 0:06036f8bee2d 102 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "c:%p;%p-%u;%u\n", res, caller, temp_s1, temp_s2);
ganlikun 0:06036f8bee2d 103 break;
ganlikun 0:06036f8bee2d 104
ganlikun 0:06036f8bee2d 105 case MBED_MEM_TRACE_FREE:
ganlikun 0:06036f8bee2d 106 temp_ptr = va_arg(va, void*);
ganlikun 0:06036f8bee2d 107 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "f:%p;%p-%p\n", res, caller, temp_ptr);
ganlikun 0:06036f8bee2d 108 break;
ganlikun 0:06036f8bee2d 109
ganlikun 0:06036f8bee2d 110 default:
ganlikun 0:06036f8bee2d 111 printf("?\n");
ganlikun 0:06036f8bee2d 112 }
ganlikun 0:06036f8bee2d 113 va_end(va);
ganlikun 0:06036f8bee2d 114 }
ganlikun 0:06036f8bee2d 115
ganlikun 0:06036f8bee2d 116