mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

platform/mbed_mem_trace.cpp@180:96ed750bd169, 2018-01-17 (annotated)

Committer:
Anna Bridge
Date:
Wed Jan 17 15:23:54 2018 +0000
Revision:
180:96ed750bd169
Child:
187:0387e8f68319
mbed-dev libray. Release version 158

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Anna Bridge 180:96ed750bd169 1 /* mbed Microcontroller Library
Anna Bridge 180:96ed750bd169 2 * Copyright (c) 2006-2016 ARM Limited
Anna Bridge 180:96ed750bd169 3 *
Anna Bridge 180:96ed750bd169 4 * Licensed under the Apache License, Version 2.0 (the "License");
Anna Bridge 180:96ed750bd169 5 * you may not use this file except in compliance with the License.
Anna Bridge 180:96ed750bd169 6 * You may obtain a copy of the License at
Anna Bridge 180:96ed750bd169 7 *
Anna Bridge 180:96ed750bd169 8 * http://www.apache.org/licenses/LICENSE-2.0
Anna Bridge 180:96ed750bd169 9 *
Anna Bridge 180:96ed750bd169 10 * Unless required by applicable law or agreed to in writing, software
Anna Bridge 180:96ed750bd169 11 * distributed under the License is distributed on an "AS IS" BASIS,
Anna Bridge 180:96ed750bd169 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Anna Bridge 180:96ed750bd169 13 * See the License for the specific language governing permissions and
Anna Bridge 180:96ed750bd169 14 * limitations under the License.
Anna Bridge 180:96ed750bd169 15 */
Anna Bridge 180:96ed750bd169 16
Anna Bridge 180:96ed750bd169 17 #include <stdlib.h>
Anna Bridge 180:96ed750bd169 18 #include <stdarg.h>
Anna Bridge 180:96ed750bd169 19 #include <stdio.h>
Anna Bridge 180:96ed750bd169 20 #include "platform/mbed_mem_trace.h"
Anna Bridge 180:96ed750bd169 21 #include "platform/mbed_critical.h"
Anna Bridge 180:96ed750bd169 22 #include "platform/SingletonPtr.h"
Anna Bridge 180:96ed750bd169 23 #include "platform/PlatformMutex.h"
Anna Bridge 180:96ed750bd169 24
Anna Bridge 180:96ed750bd169 25 /******************************************************************************
Anna Bridge 180:96ed750bd169 26 * Internal variables, functions and helpers
Anna Bridge 180:96ed750bd169 27 *****************************************************************************/
Anna Bridge 180:96ed750bd169 28
Anna Bridge 180:96ed750bd169 29 /* The callback function that will be called after a traced memory operations finishes. */
Anna Bridge 180:96ed750bd169 30 static mbed_mem_trace_cb_t mem_trace_cb;
Anna Bridge 180:96ed750bd169 31 /* 'trace_lock_count' guards "trace inside trace" situations (for example, the implementation
Anna Bridge 180:96ed750bd169 32 * of realloc() might call malloc() internally, and since malloc() is also traced, this could
Anna Bridge 180:96ed750bd169 33 * result in two calls to the callback function instead of one. */
Anna Bridge 180:96ed750bd169 34 static uint8_t trace_lock_count;
Anna Bridge 180:96ed750bd169 35 static SingletonPtr<PlatformMutex> mem_trace_mutex;
Anna Bridge 180:96ed750bd169 36
Anna Bridge 180:96ed750bd169 37 #define TRACE_FIRST_LOCK() (trace_lock_count < 2)
Anna Bridge 180:96ed750bd169 38
Anna Bridge 180:96ed750bd169 39
Anna Bridge 180:96ed750bd169 40 /******************************************************************************
Anna Bridge 180:96ed750bd169 41 * Public interface
Anna Bridge 180:96ed750bd169 42 *****************************************************************************/
Anna Bridge 180:96ed750bd169 43
Anna Bridge 180:96ed750bd169 44 void mbed_mem_trace_set_callback(mbed_mem_trace_cb_t cb) {
Anna Bridge 180:96ed750bd169 45 mem_trace_cb = cb;
Anna Bridge 180:96ed750bd169 46 }
Anna Bridge 180:96ed750bd169 47
Anna Bridge 180:96ed750bd169 48 void mbed_mem_trace_lock()
Anna Bridge 180:96ed750bd169 49 {
Anna Bridge 180:96ed750bd169 50 mem_trace_mutex->lock();
Anna Bridge 180:96ed750bd169 51 trace_lock_count++;
Anna Bridge 180:96ed750bd169 52 }
Anna Bridge 180:96ed750bd169 53
Anna Bridge 180:96ed750bd169 54 void mbed_mem_trace_unlock()
Anna Bridge 180:96ed750bd169 55 {
Anna Bridge 180:96ed750bd169 56 trace_lock_count--;
Anna Bridge 180:96ed750bd169 57 mem_trace_mutex->unlock();
Anna Bridge 180:96ed750bd169 58 }
Anna Bridge 180:96ed750bd169 59
Anna Bridge 180:96ed750bd169 60 void *mbed_mem_trace_malloc(void *res, size_t size, void *caller) {
Anna Bridge 180:96ed750bd169 61 if (mem_trace_cb) {
Anna Bridge 180:96ed750bd169 62 if (TRACE_FIRST_LOCK()) {
Anna Bridge 180:96ed750bd169 63 mem_trace_cb(MBED_MEM_TRACE_MALLOC, res, caller, size);
Anna Bridge 180:96ed750bd169 64 }
Anna Bridge 180:96ed750bd169 65 }
Anna Bridge 180:96ed750bd169 66 return res;
Anna Bridge 180:96ed750bd169 67 }
Anna Bridge 180:96ed750bd169 68
Anna Bridge 180:96ed750bd169 69 void *mbed_mem_trace_realloc(void *res, void *ptr, size_t size, void *caller) {
Anna Bridge 180:96ed750bd169 70 if (mem_trace_cb) {
Anna Bridge 180:96ed750bd169 71 if (TRACE_FIRST_LOCK()) {
Anna Bridge 180:96ed750bd169 72 mem_trace_cb(MBED_MEM_TRACE_REALLOC, res, caller, ptr, size);
Anna Bridge 180:96ed750bd169 73 }
Anna Bridge 180:96ed750bd169 74 }
Anna Bridge 180:96ed750bd169 75 return res;
Anna Bridge 180:96ed750bd169 76 }
Anna Bridge 180:96ed750bd169 77
Anna Bridge 180:96ed750bd169 78 void *mbed_mem_trace_calloc(void *res, size_t num, size_t size, void *caller) {
Anna Bridge 180:96ed750bd169 79 if (mem_trace_cb) {
Anna Bridge 180:96ed750bd169 80 if (TRACE_FIRST_LOCK()) {
Anna Bridge 180:96ed750bd169 81 mem_trace_cb(MBED_MEM_TRACE_CALLOC, res, caller, num, size);
Anna Bridge 180:96ed750bd169 82 }
Anna Bridge 180:96ed750bd169 83 }
Anna Bridge 180:96ed750bd169 84 return res;
Anna Bridge 180:96ed750bd169 85 }
Anna Bridge 180:96ed750bd169 86
Anna Bridge 180:96ed750bd169 87 void mbed_mem_trace_free(void *ptr, void *caller) {
Anna Bridge 180:96ed750bd169 88 if (mem_trace_cb) {
Anna Bridge 180:96ed750bd169 89 if (TRACE_FIRST_LOCK()) {
Anna Bridge 180:96ed750bd169 90 mem_trace_cb(MBED_MEM_TRACE_FREE, NULL, caller, ptr);
Anna Bridge 180:96ed750bd169 91 }
Anna Bridge 180:96ed750bd169 92 }
Anna Bridge 180:96ed750bd169 93 }
Anna Bridge 180:96ed750bd169 94
Anna Bridge 180:96ed750bd169 95 void mbed_mem_trace_default_callback(uint8_t op, void *res, void *caller, ...) {
Anna Bridge 180:96ed750bd169 96 va_list va;
Anna Bridge 180:96ed750bd169 97 size_t temp_s1, temp_s2;
Anna Bridge 180:96ed750bd169 98 void *temp_ptr;
Anna Bridge 180:96ed750bd169 99
Anna Bridge 180:96ed750bd169 100 va_start(va, caller);
Anna Bridge 180:96ed750bd169 101 switch(op) {
Anna Bridge 180:96ed750bd169 102 case MBED_MEM_TRACE_MALLOC:
Anna Bridge 180:96ed750bd169 103 temp_s1 = va_arg(va, size_t);
Anna Bridge 180:96ed750bd169 104 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "m:%p;%p-%u\n", res, caller, temp_s1);
Anna Bridge 180:96ed750bd169 105 break;
Anna Bridge 180:96ed750bd169 106
Anna Bridge 180:96ed750bd169 107 case MBED_MEM_TRACE_REALLOC:
Anna Bridge 180:96ed750bd169 108 temp_ptr = va_arg(va, void*);
Anna Bridge 180:96ed750bd169 109 temp_s1 = va_arg(va, size_t);
Anna Bridge 180:96ed750bd169 110 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "r:%p;%p-%p;%u\n", res, caller, temp_ptr, temp_s1);
Anna Bridge 180:96ed750bd169 111 break;
Anna Bridge 180:96ed750bd169 112
Anna Bridge 180:96ed750bd169 113 case MBED_MEM_TRACE_CALLOC:
Anna Bridge 180:96ed750bd169 114 temp_s1 = va_arg(va, size_t);
Anna Bridge 180:96ed750bd169 115 temp_s2 = va_arg(va, size_t);
Anna Bridge 180:96ed750bd169 116 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "c:%p;%p-%u;%u\n", res, caller, temp_s1, temp_s2);
Anna Bridge 180:96ed750bd169 117 break;
Anna Bridge 180:96ed750bd169 118
Anna Bridge 180:96ed750bd169 119 case MBED_MEM_TRACE_FREE:
Anna Bridge 180:96ed750bd169 120 temp_ptr = va_arg(va, void*);
Anna Bridge 180:96ed750bd169 121 printf(MBED_MEM_DEFAULT_TRACER_PREFIX "f:%p;%p-%p\n", res, caller, temp_ptr);
Anna Bridge 180:96ed750bd169 122 break;
Anna Bridge 180:96ed750bd169 123
Anna Bridge 180:96ed750bd169 124 default:
Anna Bridge 180:96ed750bd169 125 printf("?\n");
Anna Bridge 180:96ed750bd169 126 }
Anna Bridge 180:96ed750bd169 127 va_end(va);
Anna Bridge 180:96ed750bd169 128 }
Anna Bridge 180:96ed750bd169 129