Kai Riedel
Library for Programmable Resolution 1-Wire Digital ThermometerDS18B20
DebugTrace.cpp@0:21c0c97a5d7c, 2011-02-03 (annotated)
- Committer:
- kriedel
- Date:
- Thu Feb 03 12:10:20 2011 +0000
- Revision:
- 0:21c0c97a5d7c
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| kriedel | 0:21c0c97a5d7c | 1 | /* |
| kriedel | 0:21c0c97a5d7c | 2 | * DebugTrace. Allows dumping debug messages/values to serial or |
| kriedel | 0:21c0c97a5d7c | 3 | * to file. |
| kriedel | 0:21c0c97a5d7c | 4 | * |
| kriedel | 0:21c0c97a5d7c | 5 | * Copyright (C) <2009> Petras Saduikis <petras@petras.co.uk> |
| kriedel | 0:21c0c97a5d7c | 6 | * |
| kriedel | 0:21c0c97a5d7c | 7 | * This file is part of DebugTrace. |
| kriedel | 0:21c0c97a5d7c | 8 | * |
| kriedel | 0:21c0c97a5d7c | 9 | * DebugTrace is free software: you can redistribute it and/or modify |
| kriedel | 0:21c0c97a5d7c | 10 | * it under the terms of the GNU General Public License as published by |
| kriedel | 0:21c0c97a5d7c | 11 | * the Free Software Foundation, either version 3 of the License, or |
| kriedel | 0:21c0c97a5d7c | 12 | * (at your option) any later version. |
| kriedel | 0:21c0c97a5d7c | 13 | * |
| kriedel | 0:21c0c97a5d7c | 14 | * DebugTrace is distributed in the hope that it will be useful, |
| kriedel | 0:21c0c97a5d7c | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| kriedel | 0:21c0c97a5d7c | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| kriedel | 0:21c0c97a5d7c | 17 | * GNU General Public License for more details. |
| kriedel | 0:21c0c97a5d7c | 18 | * |
| kriedel | 0:21c0c97a5d7c | 19 | * You should have received a copy of the GNU General Public License |
| kriedel | 0:21c0c97a5d7c | 20 | * along with DebugTrace. If not, see <http://www.gnu.org/licenses/>. |
| kriedel | 0:21c0c97a5d7c | 21 | */ |
| kriedel | 0:21c0c97a5d7c | 22 | |
| kriedel | 0:21c0c97a5d7c | 23 | #include "DebugTrace.h" |
| kriedel | 0:21c0c97a5d7c | 24 | #include <mbed.h> |
| kriedel | 0:21c0c97a5d7c | 25 | #include <stdarg.h> |
| kriedel | 0:21c0c97a5d7c | 26 | #include <string.h> |
| kriedel | 0:21c0c97a5d7c | 27 | |
| kriedel | 0:21c0c97a5d7c | 28 | Serial logSerial(USBTX, USBRX); |
| kriedel | 0:21c0c97a5d7c | 29 | LocalFileSystem local("local"); |
| kriedel | 0:21c0c97a5d7c | 30 | |
| kriedel | 0:21c0c97a5d7c | 31 | const char* FILE_PATH = "/local/"; |
| kriedel | 0:21c0c97a5d7c | 32 | const char* EXTN = ".bak"; |
| kriedel | 0:21c0c97a5d7c | 33 | |
| kriedel | 0:21c0c97a5d7c | 34 | DebugTrace::DebugTrace(eLog on, eLogTarget mode, const char* fileName, int maxSize) : |
| kriedel | 0:21c0c97a5d7c | 35 | enabled(on), logMode(mode), maxFileSize(maxSize), currentFileSize(0), |
| kriedel | 0:21c0c97a5d7c | 36 | logFileStatus(0) |
| kriedel | 0:21c0c97a5d7c | 37 | { |
| kriedel | 0:21c0c97a5d7c | 38 | // allocate memory for file name strings |
| kriedel | 0:21c0c97a5d7c | 39 | int str_size = (strlen(fileName) + strlen(FILE_PATH) + strlen(EXTN) + 1) * sizeof(char); |
| kriedel | 0:21c0c97a5d7c | 40 | logFile = (char*)malloc(str_size); |
| kriedel | 0:21c0c97a5d7c | 41 | logFileBackup = (char*)malloc(str_size); |
| kriedel | 0:21c0c97a5d7c | 42 | |
| kriedel | 0:21c0c97a5d7c | 43 | // add path to log file name |
| kriedel | 0:21c0c97a5d7c | 44 | strcpy(logFile, FILE_PATH); |
| kriedel | 0:21c0c97a5d7c | 45 | strcat(logFile, fileName); |
| kriedel | 0:21c0c97a5d7c | 46 | |
| kriedel | 0:21c0c97a5d7c | 47 | // create backup file name |
| kriedel | 0:21c0c97a5d7c | 48 | strcpy(logFileBackup, logFile); |
| kriedel | 0:21c0c97a5d7c | 49 | strcpy(logFileBackup, strtok(logFileBackup, ".")); |
| kriedel | 0:21c0c97a5d7c | 50 | strcat(logFileBackup, EXTN); |
| kriedel | 0:21c0c97a5d7c | 51 | } |
| kriedel | 0:21c0c97a5d7c | 52 | |
| kriedel | 0:21c0c97a5d7c | 53 | DebugTrace::~DebugTrace() |
| kriedel | 0:21c0c97a5d7c | 54 | { |
| kriedel | 0:21c0c97a5d7c | 55 | // dust to dust, ashes to ashes |
| kriedel | 0:21c0c97a5d7c | 56 | if (logFile != NULL) free(logFile); |
| kriedel | 0:21c0c97a5d7c | 57 | if (logFileBackup != NULL) free(logFileBackup); |
| kriedel | 0:21c0c97a5d7c | 58 | } |
| kriedel | 0:21c0c97a5d7c | 59 | |
| kriedel | 0:21c0c97a5d7c | 60 | void DebugTrace::clear() |
| kriedel | 0:21c0c97a5d7c | 61 | { |
| kriedel | 0:21c0c97a5d7c | 62 | // don't care about whether these fail |
| kriedel | 0:21c0c97a5d7c | 63 | remove(logFile); |
| kriedel | 0:21c0c97a5d7c | 64 | remove(logFileBackup); |
| kriedel | 0:21c0c97a5d7c | 65 | } |
| kriedel | 0:21c0c97a5d7c | 66 | |
| kriedel | 0:21c0c97a5d7c | 67 | void DebugTrace::backupLog() |
| kriedel | 0:21c0c97a5d7c | 68 | { |
| kriedel | 0:21c0c97a5d7c | 69 | // delete previous backup file |
| kriedel | 0:21c0c97a5d7c | 70 | if (remove(logFileBackup)) |
| kriedel | 0:21c0c97a5d7c | 71 | { |
| kriedel | 0:21c0c97a5d7c | 72 | // standard copy stuff |
| kriedel | 0:21c0c97a5d7c | 73 | char ch; |
| kriedel | 0:21c0c97a5d7c | 74 | FILE* to = fopen(logFileBackup, "wb"); |
| kriedel | 0:21c0c97a5d7c | 75 | if (NULL != to) |
| kriedel | 0:21c0c97a5d7c | 76 | { |
| kriedel | 0:21c0c97a5d7c | 77 | FILE* from = fopen(logFile, "rb"); |
| kriedel | 0:21c0c97a5d7c | 78 | if (NULL != from) |
| kriedel | 0:21c0c97a5d7c | 79 | { |
| kriedel | 0:21c0c97a5d7c | 80 | while(!feof(from)) |
| kriedel | 0:21c0c97a5d7c | 81 | { |
| kriedel | 0:21c0c97a5d7c | 82 | ch = fgetc(from); |
| kriedel | 0:21c0c97a5d7c | 83 | if (ferror(from)) break; |
| kriedel | 0:21c0c97a5d7c | 84 | |
| kriedel | 0:21c0c97a5d7c | 85 | if(!feof(from)) fputc(ch, to); |
| kriedel | 0:21c0c97a5d7c | 86 | if (ferror(to)) break; |
| kriedel | 0:21c0c97a5d7c | 87 | } |
| kriedel | 0:21c0c97a5d7c | 88 | } |
| kriedel | 0:21c0c97a5d7c | 89 | |
| kriedel | 0:21c0c97a5d7c | 90 | if (NULL != from) fclose(from); |
| kriedel | 0:21c0c97a5d7c | 91 | if (NULL != to) fclose(to); |
| kriedel | 0:21c0c97a5d7c | 92 | } |
| kriedel | 0:21c0c97a5d7c | 93 | } |
| kriedel | 0:21c0c97a5d7c | 94 | |
| kriedel | 0:21c0c97a5d7c | 95 | // now delete the log file, so we are ready to start again |
| kriedel | 0:21c0c97a5d7c | 96 | // even if backup creation failed - the show must go on! |
| kriedel | 0:21c0c97a5d7c | 97 | logFileStatus = remove(logFile); |
| kriedel | 0:21c0c97a5d7c | 98 | } |
| kriedel | 0:21c0c97a5d7c | 99 | |
| kriedel | 0:21c0c97a5d7c | 100 | void DebugTrace::traceOut(const char* fmt, ...) |
| kriedel | 0:21c0c97a5d7c | 101 | { |
| kriedel | 0:21c0c97a5d7c | 102 | if (enabled) |
| kriedel | 0:21c0c97a5d7c | 103 | { |
| kriedel | 0:21c0c97a5d7c | 104 | va_list ap; // argument list pointer |
| kriedel | 0:21c0c97a5d7c | 105 | va_start(ap, fmt); |
| kriedel | 0:21c0c97a5d7c | 106 | |
| kriedel | 0:21c0c97a5d7c | 107 | if (TO_SERIAL == logMode) |
| kriedel | 0:21c0c97a5d7c | 108 | { |
| kriedel | 0:21c0c97a5d7c | 109 | vfprintf(logSerial, fmt, ap); |
| kriedel | 0:21c0c97a5d7c | 110 | } |
| kriedel | 0:21c0c97a5d7c | 111 | else // TO_FILE |
| kriedel | 0:21c0c97a5d7c | 112 | { |
| kriedel | 0:21c0c97a5d7c | 113 | if (0 == logFileStatus) // otherwise we failed to remove a full log file |
| kriedel | 0:21c0c97a5d7c | 114 | { |
| kriedel | 0:21c0c97a5d7c | 115 | // Write data to file. Note the file size may go over limit |
| kriedel | 0:21c0c97a5d7c | 116 | // as we check total size afterwards, using the size written to file. |
| kriedel | 0:21c0c97a5d7c | 117 | // This is not a big issue, as this mechanism is only here |
| kriedel | 0:21c0c97a5d7c | 118 | // to stop the file growing unchecked. Just remember log file sizes may |
| kriedel | 0:21c0c97a5d7c | 119 | // be some what over (as apposed to some what under), so don't push it |
| kriedel | 0:21c0c97a5d7c | 120 | // with the max file size. |
| kriedel | 0:21c0c97a5d7c | 121 | FILE* fp = fopen(logFile, "a"); |
| kriedel | 0:21c0c97a5d7c | 122 | if (NULL == fp) |
| kriedel | 0:21c0c97a5d7c | 123 | { |
| kriedel | 0:21c0c97a5d7c | 124 | va_end(ap); |
| kriedel | 0:21c0c97a5d7c | 125 | return; |
| kriedel | 0:21c0c97a5d7c | 126 | } |
| kriedel | 0:21c0c97a5d7c | 127 | int size_written = vfprintf(fp, fmt, ap); |
| kriedel | 0:21c0c97a5d7c | 128 | fclose(fp); |
| kriedel | 0:21c0c97a5d7c | 129 | |
| kriedel | 0:21c0c97a5d7c | 130 | // check if we are over the max file size |
| kriedel | 0:21c0c97a5d7c | 131 | // if so backup file and start again |
| kriedel | 0:21c0c97a5d7c | 132 | currentFileSize += size_written; |
| kriedel | 0:21c0c97a5d7c | 133 | if (currentFileSize >= maxFileSize) |
| kriedel | 0:21c0c97a5d7c | 134 | { |
| kriedel | 0:21c0c97a5d7c | 135 | backupLog(); |
| kriedel | 0:21c0c97a5d7c | 136 | currentFileSize = 0; |
| kriedel | 0:21c0c97a5d7c | 137 | } |
| kriedel | 0:21c0c97a5d7c | 138 | } |
| kriedel | 0:21c0c97a5d7c | 139 | } |
| kriedel | 0:21c0c97a5d7c | 140 | |
| kriedel | 0:21c0c97a5d7c | 141 | va_end(ap); |
| kriedel | 0:21c0c97a5d7c | 142 | } |
| kriedel | 0:21c0c97a5d7c | 143 | } |