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Diffstat (limited to 'debug.cc')
| -rw-r--r-- | debug.cc | 167 |
1 files changed, 167 insertions, 0 deletions
@@ -0,0 +1,167 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set et sw=2 ts=2: */ +/*************************************************************************** + * debug.cc + * + * Thu Nov 1 13:38:47 CET 2012 + * Copyright 2012 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of Debug Module. + * + * Debug Module is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Debug Module is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Debug Module; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "debug.h" + +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> +//#include <pthread.h> +#include <string> + +//#include "mutex.h" + +//static Mutex mutex; + +static unsigned int gettid() +{ + return 0;//(unsigned int)pthread_self(); +} + +static FILE *logfp = stderr; + +#define NELEM(x) (sizeof(x)/sizeof((x)[0])) +struct __debug_channel +{ + char name[32]; + unsigned flags; +}; + +static const char * const debug_class_str[] = + { "fixme", "err", "warn", "info", "debug" }; + +#define __DEBUG_CHANNEL_MAX 256 + +static struct __debug_channel debug_channel[__DEBUG_CHANNEL_MAX]; +static unsigned n_debug_channel = 0; +static unsigned debug_flags = (1 << __class_err) | (1 << __class_fixme); + +static int __debug_enabled(const enum __debug_class cl, const char *ch) +{ + unsigned i; + for(i = 0; i < n_debug_channel; i++) { + if(!strcmp(ch, debug_channel[i].name)) { + return (debug_channel[i].flags & (1 << cl)) != 0; + } + } + return debug_flags & (1 << cl); +} + +int __debug(const char *func, const int line, + const enum __debug_class cl, + const char *ch, const char *fmt, ...) +{ + // MutexAutolock m(mutex); + int ret = 0; + if(__debug_enabled(cl, ch)) { + if((unsigned)cl < NELEM(debug_class_str)) + ret += fprintf(logfp, "%u %s:%s:%s:%d ", + gettid(), debug_class_str[(unsigned)cl], ch, func, line); + if(fmt) { + va_list va; + va_start(va, fmt); + ret += vfprintf(logfp, fmt, va); + va_end(va); + } + } + if(ret){ + fflush(logfp); + } + return ret; +} + +void debug_init(FILE *fp) +{ + // mutex.name = "debug"; + // MutexAutolock m(mutex); + logfp = fp; +} + +/* + * fmt := [set[,set]*]* + * set := [+-]channel + * | class[+-]channel + * | [+-]all + */ +void debug_parse(const char *fmt) +{ + // MutexAutolock m(mutex); + char *s; + char *next; + char *opt; + + if(!(s = strdup(fmt))) return; + + for(opt = s; opt; opt = next) { + int set = 0; + int clr = 0; + unsigned i; + if((next = strchr(opt, ','))) *next++ = '\0'; + char *p = opt + strcspn(opt, "+-"); + if(!*p) p = opt; // All chars -> a channel name + if(p > opt) { + // we have a class + for(i = 0; i < NELEM(debug_class_str); i++) { + int n = strlen(debug_class_str[i]); + if(n != (p - opt)) continue; + if(!memcmp(opt, debug_class_str[i], n)) { + // Found the class + if(*p == '+') + set = 1 << i; + else + clr = 1 << i; + break; + } + } + if(i == NELEM(debug_class_str)) continue; + } else { + if(*p == '-') + clr = ~0; + else + set = ~0; + } + if(*p == '+' || *p == '-') p++; + if(!*p) continue; + if(!strcmp("all", p)) { + debug_flags = (debug_flags & ~clr) | set; + } else { + if(strlen(p) >= sizeof(debug_channel[0].name)) continue; + for(i = 0; i < n_debug_channel; i++) { + if(!strcmp(p, debug_channel[i].name)) { + debug_channel[i].flags = (debug_channel[i].flags & ~clr) | set; + break; + } + } + if(i == n_debug_channel && n_debug_channel < __DEBUG_CHANNEL_MAX) { + strcpy(debug_channel[i].name, p); + debug_channel[i].flags = (debug_flags & ~clr) | set; + n_debug_channel++; + } + } + } + free(s); +} |