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authorBent Bisballe Nyeng <deva@aasimon.org>2012-11-01 14:28:05 +0100
committerBent Bisballe Nyeng <deva@aasimon.org>2012-11-01 14:28:05 +0100
commita32e833c161a0dbcb94e939e75465ee302a8e0bb (patch)
treec7df27ea8505126401630da799cc1cb06a470129 /debug.cc
parent10238e1deffed196543f43bca8bc9bda63489f44 (diff)
Simple basic implementation.
Diffstat (limited to 'debug.cc')
-rw-r--r--debug.cc167
1 files changed, 167 insertions, 0 deletions
diff --git a/debug.cc b/debug.cc
index e69de29..d3c1dce 100644
--- a/debug.cc
+++ b/debug.cc
@@ -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);
+}