Umar Naeem / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by Umar Naeem

platform/mbed_mem_trace.c@160:d5399cc887bb, 2017-03-14 (annotated)

Committer:
<>
Date:
Tue Mar 14 16:40:56 2017 +0000
Revision:
160:d5399cc887bb
Parent:
149:156823d33999 
This updates the lib to the mbed lib v138

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2006-2016 ARM Limited
<> 149:156823d33999 3 *
<> 149:156823d33999 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 5 * you may not use this file except in compliance with the License.
<> 149:156823d33999 6 * You may obtain a copy of the License at
<> 149:156823d33999 7 *
<> 149:156823d33999 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 13 * See the License for the specific language governing permissions and
<> 149:156823d33999 14 * limitations under the License.
<> 149:156823d33999 15 */
<> 149:156823d33999 16
<> 149:156823d33999 17 #include <stdlib.h>
<> 149:156823d33999 18 #include <stdarg.h>
<> 149:156823d33999 19 #include <stdio.h>
<> 149:156823d33999 20 #include "platform/mbed_mem_trace.h"
<> 160:d5399cc887bb 21 #include "platform/mbed_critical.h"
<> 149:156823d33999 22
<> 149:156823d33999 23 /******************************************************************************
<> 149:156823d33999 24 * Internal variables, functions and helpers
<> 149:156823d33999 25 *****************************************************************************/
<> 149:156823d33999 26
<> 149:156823d33999 27 /* The callback function that will be called after a traced memory operations finishes. */
<> 149:156823d33999 28 static mbed_mem_trace_cb_t mem_trace_cb;
<> 149:156823d33999 29 /* 'trave_level' guards "trace inside trace" situations (for example, the implementation
<> 149:156823d33999 30 * of realloc() might call malloc() internally, and since malloc() is also traced, this could
<> 149:156823d33999 31 * result in two calls to the callback function instead of one. */
<> 149:156823d33999 32 static uint8_t trace_level;
<> 149:156823d33999 33
<> 149:156823d33999 34 /******************************************************************************
<> 149:156823d33999 35 * Public interface
<> 149:156823d33999 36 *****************************************************************************/
<> 149:156823d33999 37
<> 149:156823d33999 38 void mbed_mem_trace_set_callback(mbed_mem_trace_cb_t cb) {
<> 149:156823d33999 39 mem_trace_cb = cb;
<> 149:156823d33999 40 }
<> 149:156823d33999 41
<> 149:156823d33999 42 void *mbed_mem_trace_malloc(void *res, size_t size, void *caller) {
<> 149:156823d33999 43 if (mem_trace_cb) {
<> 149:156823d33999 44 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
<> 149:156823d33999 45 mem_trace_cb(MBED_MEM_TRACE_MALLOC, res, caller, size);
<> 149:156823d33999 46 }
<> 149:156823d33999 47 core_util_atomic_decr_u8(&trace_level, 1);
<> 149:156823d33999 48 }
<> 149:156823d33999 49 return res;
<> 149:156823d33999 50 }
<> 149:156823d33999 51
<> 149:156823d33999 52 void *mbed_mem_trace_realloc(void *res, void *ptr, size_t size, void *caller) {
<> 149:156823d33999 53 if (mem_trace_cb) {
<> 149:156823d33999 54 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
<> 149:156823d33999 55 mem_trace_cb(MBED_MEM_TRACE_REALLOC, res, caller, ptr, size);
<> 149:156823d33999 56 }
<> 149:156823d33999 57 core_util_atomic_decr_u8(&trace_level, 1);
<> 149:156823d33999 58 }
<> 149:156823d33999 59 return res;
<> 149:156823d33999 60 }
<> 149:156823d33999 61
<> 149:156823d33999 62 void *mbed_mem_trace_calloc(void *res, size_t num, size_t size, void *caller) {
<> 149:156823d33999 63 if (mem_trace_cb) {
<> 149:156823d33999 64 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
<> 149:156823d33999 65 mem_trace_cb(MBED_MEM_TRACE_CALLOC, res, caller, num, size);
<> 149:156823d33999 66 }
<> 149:156823d33999 67 core_util_atomic_decr_u8(&trace_level, 1);
<> 149:156823d33999 68 }
<> 149:156823d33999 69 return res;
<> 149:156823d33999 70 }
<> 149:156823d33999 71
<> 149:156823d33999 72 void mbed_mem_trace_free(void *ptr, void *caller) {
<> 149:156823d33999 73 if (mem_trace_cb) {
<> 149:156823d33999 74 if (core_util_atomic_incr_u8(&trace_level, 1) == 1) {
<> 149:156823d33999 75 mem_trace_cb(MBED_MEM_TRACE_FREE, NULL, caller, ptr);
<> 149:156823d33999 76 }
<> 149:156823d33999 77 core_util_atomic_decr_u8(&trace_level, 1);
<> 149:156823d33999 78 }
<> 149:156823d33999 79 }
<> 149:156823d33999 80
<> 149:156823d33999 81 void mbed_mem_trace_default_callback(uint8_t op, void *res, void *caller, ...) {
<> 149:156823d33999 82 va_list va;
<> 149:156823d33999 83 size_t temp_s1, temp_s2;
<> 149:156823d33999 84 void *temp_ptr;
<> 149:156823d33999 85
<> 149:156823d33999 86 va_start(va, caller);
<> 149:156823d33999 87 switch(op) {
<> 149:156823d33999 88 case MBED_MEM_TRACE_MALLOC:
<> 149:156823d33999 89 temp_s1 = va_arg(va, size_t);
<> 149:156823d33999 90 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "m:%p;%p-%u\n", res, caller, temp_s1);
<> 149:156823d33999 91 break;
<> 149:156823d33999 92
<> 149:156823d33999 93 case MBED_MEM_TRACE_REALLOC:
<> 149:156823d33999 94 temp_ptr = va_arg(va, void*);
<> 149:156823d33999 95 temp_s1 = va_arg(va, size_t);
<> 149:156823d33999 96 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "r:%p;%p-%p;%u\n", res, caller, temp_ptr, temp_s1);
<> 149:156823d33999 97 break;
<> 149:156823d33999 98
<> 149:156823d33999 99 case MBED_MEM_TRACE_CALLOC:
<> 149:156823d33999 100 temp_s1 = va_arg(va, size_t);
<> 149:156823d33999 101 temp_s2 = va_arg(va, size_t);
<> 149:156823d33999 102 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "c:%p;%p-%u;%u\n", res, caller, temp_s1, temp_s2);
<> 149:156823d33999 103 break;
<> 149:156823d33999 104
<> 149:156823d33999 105 case MBED_MEM_TRACE_FREE:
<> 149:156823d33999 106 temp_ptr = va_arg(va, void*);
<> 149:156823d33999 107 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "f:%p;%p-%p\n", res, caller, temp_ptr);
<> 149:156823d33999 108 break;
<> 149:156823d33999 109
<> 149:156823d33999 110 default:
<> 149:156823d33999 111 printf("?\n");
<> 149:156823d33999 112 }
<> 149:156823d33999 113 va_end(va);
<> 149:156823d33999 114 }
<> 149:156823d33999 115