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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

platform/mbed_mem_trace.h@169:a7c7b631e539, 2018-06-22 (annotated)

Committer:
Anna Bridge
Date:
Fri Jun 22 15:38:59 2018 +0100
Revision:
169:a7c7b631e539
Parent:
160:5571c4ff569f
Child:
170:e95d10626187
mbed library. Release version 162

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1
AnnaBridge 156:ff21514d8981 2 /** \addtogroup platform */
AnnaBridge 156:ff21514d8981 3 /** @{*/
AnnaBridge 158:1c57384330a6 4
AnnaBridge 156:ff21514d8981 5 /* mbed Microcontroller Library
AnnaBridge 156:ff21514d8981 6 * Copyright (c) 2006-2016 ARM Limited
AnnaBridge 156:ff21514d8981 7 *
AnnaBridge 156:ff21514d8981 8 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 156:ff21514d8981 9 * you may not use this file except in compliance with the License.
AnnaBridge 156:ff21514d8981 10 * You may obtain a copy of the License at
AnnaBridge 156:ff21514d8981 11 *
AnnaBridge 156:ff21514d8981 12 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 156:ff21514d8981 13 *
AnnaBridge 156:ff21514d8981 14 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 156:ff21514d8981 15 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 156:ff21514d8981 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 156:ff21514d8981 17 * See the License for the specific language governing permissions and
AnnaBridge 156:ff21514d8981 18 * limitations under the License.
AnnaBridge 156:ff21514d8981 19 */
AnnaBridge 156:ff21514d8981 20
AnnaBridge 156:ff21514d8981 21 #ifndef __MBED_MEM_TRACE_H__
AnnaBridge 156:ff21514d8981 22 #define __MBED_MEM_TRACE_H__
AnnaBridge 156:ff21514d8981 23
AnnaBridge 156:ff21514d8981 24 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 25 extern "C" {
AnnaBridge 156:ff21514d8981 26 #endif
AnnaBridge 156:ff21514d8981 27
AnnaBridge 156:ff21514d8981 28 #include <stdint.h>
AnnaBridge 156:ff21514d8981 29 #include <stddef.h>
AnnaBridge 156:ff21514d8981 30
AnnaBridge 156:ff21514d8981 31 /* Operation types for tracer */
AnnaBridge 156:ff21514d8981 32 enum {
AnnaBridge 156:ff21514d8981 33 MBED_MEM_TRACE_MALLOC,
AnnaBridge 156:ff21514d8981 34 MBED_MEM_TRACE_REALLOC,
AnnaBridge 156:ff21514d8981 35 MBED_MEM_TRACE_CALLOC,
AnnaBridge 156:ff21514d8981 36 MBED_MEM_TRACE_FREE
AnnaBridge 156:ff21514d8981 37 };
AnnaBridge 156:ff21514d8981 38
AnnaBridge 158:1c57384330a6 39 /**
AnnaBridge 158:1c57384330a6 40 * \defgroup platform_mem_trace mem_trace functions
AnnaBridge 158:1c57384330a6 41 * @{
AnnaBridge 158:1c57384330a6 42 */
AnnaBridge 158:1c57384330a6 43
AnnaBridge 156:ff21514d8981 44 /* Prefix for the output of the default tracer */
AnnaBridge 156:ff21514d8981 45 #define MBED_MEM_DEFAULT_TRACER_PREFIX "#"
AnnaBridge 156:ff21514d8981 46
AnnaBridge 156:ff21514d8981 47 /**
AnnaBridge 156:ff21514d8981 48 * Type of the callback used by the memory tracer. This callback is called when a memory
AnnaBridge 156:ff21514d8981 49 * allocation operation (malloc, realloc, calloc, free) is called and tracing is enabled
AnnaBridge 156:ff21514d8981 50 * for that memory allocation function.
AnnaBridge 156:ff21514d8981 51 *
AnnaBridge 156:ff21514d8981 52 * @param op the ID of the operation (MBED_MEM_TRACE_MALLOC, MBED_MEM_TRACE_REALLOC,
AnnaBridge 156:ff21514d8981 53 * MBED_MEM_TRACE_CALLOC or MBED_MEM_TRACE_FREE).
AnnaBridge 156:ff21514d8981 54 * @param res the result that the memory operation returned (NULL for 'free').
AnnaBridge 156:ff21514d8981 55 * @param caller the caller of the memory operation. Note that the value of 'caller' might be
AnnaBridge 156:ff21514d8981 56 * unreliable.
AnnaBridge 156:ff21514d8981 57 *
AnnaBridge 156:ff21514d8981 58 * The rest of the parameters passed 'mbed_mem_trace_cb_t' are the same as the memory operations
AnnaBridge 156:ff21514d8981 59 * that triggered its call (see 'man malloc' for details):
AnnaBridge 156:ff21514d8981 60 *
AnnaBridge 156:ff21514d8981 61 * - for malloc: cb(MBED_MEM_TRACE_MALLOC, res, caller, size).
AnnaBridge 156:ff21514d8981 62 * - for realloc: cb(MBED_MEM_TRACE_REALLOC, res, caller, ptr, size).
AnnaBridge 156:ff21514d8981 63 * - for calloc: cb(MBED_MEM_TRACE_CALLOC, res, caller, nmemb, size).
AnnaBridge 156:ff21514d8981 64 * - for free: cb(MBED_MEM_TRACE_FREE, NULL, caller, ptr).
AnnaBridge 156:ff21514d8981 65 */
AnnaBridge 156:ff21514d8981 66 typedef void (*mbed_mem_trace_cb_t)(uint8_t op, void *res, void* caller, ...);
AnnaBridge 156:ff21514d8981 67
AnnaBridge 156:ff21514d8981 68 /**
AnnaBridge 156:ff21514d8981 69 * Set the callback used by the memory tracer (use NULL for disable tracing).
AnnaBridge 156:ff21514d8981 70 *
AnnaBridge 156:ff21514d8981 71 * @param cb the callback to call on each memory operation.
AnnaBridge 156:ff21514d8981 72 */
AnnaBridge 156:ff21514d8981 73 void mbed_mem_trace_set_callback(mbed_mem_trace_cb_t cb);
AnnaBridge 156:ff21514d8981 74
AnnaBridge 156:ff21514d8981 75 /**
Anna Bridge 160:5571c4ff569f 76 * Trace lock.
Anna Bridge 160:5571c4ff569f 77 * @note Locking prevent recursive tracing of malloc/free inside relloc/calloc
Anna Bridge 160:5571c4ff569f 78 */
Anna Bridge 160:5571c4ff569f 79 void mbed_mem_trace_lock();
Anna Bridge 160:5571c4ff569f 80
Anna Bridge 160:5571c4ff569f 81 /**
Anna Bridge 160:5571c4ff569f 82 * Trace unlock.
Anna Bridge 160:5571c4ff569f 83 */
Anna Bridge 160:5571c4ff569f 84 void mbed_mem_trace_unlock();
Anna Bridge 160:5571c4ff569f 85
Anna Bridge 160:5571c4ff569f 86 /**
AnnaBridge 156:ff21514d8981 87 * Trace a call to 'malloc'.
AnnaBridge 156:ff21514d8981 88 * @param res the result of running 'malloc'.
AnnaBridge 156:ff21514d8981 89 * @param size the 'size' argument given to 'malloc'.
AnnaBridge 156:ff21514d8981 90 * @param caller the caller of the memory operation.
AnnaBridge 156:ff21514d8981 91 * @return 'res' (the first argument).
AnnaBridge 156:ff21514d8981 92 */
AnnaBridge 156:ff21514d8981 93 void *mbed_mem_trace_malloc(void *res, size_t size, void *caller);
AnnaBridge 156:ff21514d8981 94
AnnaBridge 156:ff21514d8981 95 /**
AnnaBridge 156:ff21514d8981 96 * Trace a call to 'realloc'.
AnnaBridge 156:ff21514d8981 97 * @param res the result of running 'realloc'.
AnnaBridge 156:ff21514d8981 98 * @param ptr the 'ptr' argument given to 'realloc'.
AnnaBridge 156:ff21514d8981 99 * @param size the 'size' argument given to 'realloc'.
AnnaBridge 156:ff21514d8981 100 * @param caller the caller of the memory operation.
AnnaBridge 156:ff21514d8981 101 * @return 'res' (the first argument).
AnnaBridge 156:ff21514d8981 102 */
AnnaBridge 156:ff21514d8981 103 void *mbed_mem_trace_realloc(void *res, void *ptr, size_t size, void *caller);
AnnaBridge 156:ff21514d8981 104
AnnaBridge 156:ff21514d8981 105 /**
AnnaBridge 156:ff21514d8981 106 * Trace a call to 'calloc'.
AnnaBridge 156:ff21514d8981 107 * @param res the result of running 'calloc'.
AnnaBridge 156:ff21514d8981 108 * @param num the 'nmemb' argument given to 'calloc'.
AnnaBridge 156:ff21514d8981 109 * @param size the 'size' argument given to 'calloc'.
AnnaBridge 156:ff21514d8981 110 * @param caller the caller of the memory operation.
AnnaBridge 156:ff21514d8981 111 * @return 'res' (the first argument).
AnnaBridge 156:ff21514d8981 112 */
AnnaBridge 156:ff21514d8981 113 void *mbed_mem_trace_calloc(void *res, size_t num, size_t size, void *caller);
AnnaBridge 156:ff21514d8981 114
AnnaBridge 156:ff21514d8981 115 /**
AnnaBridge 156:ff21514d8981 116 * Trace a call to 'free'.
AnnaBridge 156:ff21514d8981 117 * @param ptr the 'ptr' argument given to 'free'.
AnnaBridge 156:ff21514d8981 118 * @param caller the caller of the memory operation.
AnnaBridge 156:ff21514d8981 119 */
AnnaBridge 156:ff21514d8981 120 void mbed_mem_trace_free(void *ptr, void *caller);
AnnaBridge 156:ff21514d8981 121
AnnaBridge 156:ff21514d8981 122 /**
AnnaBridge 156:ff21514d8981 123 * Default memory trace callback. DO NOT CALL DIRECTLY. It is meant to be used
AnnaBridge 156:ff21514d8981 124 * as the second argument of 'mbed_mem_trace_setup'.
AnnaBridge 156:ff21514d8981 125 *
AnnaBridge 156:ff21514d8981 126 * The default callback outputs trace data using 'printf', in a format that's
AnnaBridge 156:ff21514d8981 127 * easily parsable by an external tool. For each memory operation, the callback
AnnaBridge 156:ff21514d8981 128 * outputs a line that begins with "#<op>:<0xresult>;<0xcaller>-":
AnnaBridge 156:ff21514d8981 129 *
AnnaBridge 156:ff21514d8981 130 * @param op identifies the memory operation ('m' for 'malloc', 'r' for 'realloc',
AnnaBridge 156:ff21514d8981 131 * 'c' for 'calloc' and 'f' for 'free').
AnnaBridge 156:ff21514d8981 132 * @param res (base 16) is the result of the memor operation. This is always NULL
AnnaBridge 156:ff21514d8981 133 * for 'free', since 'free' doesn't return anything.
AnnaBridge 156:ff21514d8981 134 * @param caller (base 16) is the caller of the memory operation. Note that the value
AnnaBridge 156:ff21514d8981 135 * of 'caller' might be unreliable.
AnnaBridge 156:ff21514d8981 136 *
AnnaBridge 156:ff21514d8981 137 * The rest of the output depends on the operation being traced:
AnnaBridge 156:ff21514d8981 138 *
AnnaBridge 156:ff21514d8981 139 * - for 'malloc': 'size', where 'size' is the original argument to 'malloc'.
AnnaBridge 156:ff21514d8981 140 * - for 'realloc': '0xptr;size', where 'ptr' (base 16) and 'size' are the original arguments to 'realloc'.
AnnaBridge 156:ff21514d8981 141 * - for 'calloc': 'nmemb;size', where 'nmemb' and 'size' are the original arguments to 'calloc'.
AnnaBridge 156:ff21514d8981 142 * - for 'free': '0xptr', where 'ptr' (base 16) is the original argument to 'free'.
AnnaBridge 156:ff21514d8981 143 *
AnnaBridge 156:ff21514d8981 144 * Examples:
AnnaBridge 156:ff21514d8981 145 *
AnnaBridge 156:ff21514d8981 146 * - "#m:0x20003240;0x600d-50" encodes a 'malloc' that returned 0x20003240, was called
AnnaBridge 156:ff21514d8981 147 * by the instruction at 0x600D with a the 'size' argument equal to 50.
AnnaBridge 156:ff21514d8981 148 * - "#f:0x0;0x602f-0x20003240" encodes a 'free' that was called by the instruction at
AnnaBridge 156:ff21514d8981 149 * 0x602f with the 'ptr' argument equal to 0x20003240.
AnnaBridge 156:ff21514d8981 150 */
AnnaBridge 156:ff21514d8981 151 void mbed_mem_trace_default_callback(uint8_t op, void *res, void *caller, ...);
AnnaBridge 156:ff21514d8981 152
AnnaBridge 158:1c57384330a6 153 /** @}*/
AnnaBridge 158:1c57384330a6 154
AnnaBridge 156:ff21514d8981 155 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 156 }
AnnaBridge 156:ff21514d8981 157 #endif
AnnaBridge 156:ff21514d8981 158
AnnaBridge 156:ff21514d8981 159 #endif// #ifndef __MBED_MEM_TRACE_H__
AnnaBridge 156:ff21514d8981 160
AnnaBridge 156:ff21514d8981 161
AnnaBridge 156:ff21514d8981 162 /** @}*/