From: octo Date: Mon, 12 Dec 2005 07:35:29 +0000 (+0000) Subject: Copied src/utils_debug.[ch] from quota-branch to trunk X-Git-Tag: collectd-3.5.0~21 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=552510b091ac19691b8ebe0ffc5bc7c0ca74ac19;p=collectd.git Copied src/utils_debug.[ch] from quota-branch to trunk --- diff --git a/src/utils_debug.c b/src/utils_debug.c new file mode 100644 index 00000000..3f432e11 --- /dev/null +++ b/src/utils_debug.c @@ -0,0 +1,196 @@ +/** + * collectd - src/utils_debug.c + * Copyright (C) 2005 Niki W. Waibel + * + * This program is free software; you can redistribute it and/ + * or modify it under the terms of the GNU General Public Li- + * cence as published by the Free Software Foundation; either + * version 2 of the Licence, or any later version. + * + * This program is distributed in the hope that it will be use- + * ful, but WITHOUT ANY WARRANTY; without even the implied war- + * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public Licence for more details. + * + * You should have received a copy of the GNU General Public + * Licence along with this program; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, + * USA. + * + * Author: + * Niki W. Waibel +**/ + +#include "common.h" +#include "utils_debug.h" + +/* *** *** *** global variables *** *** *** */ +#if COLLECT_DEBUG + +#define DEFAULT_FILENAME "collectd.log" + +static void cu_vdebug(const char *file, int line, const char *func, + const char *format, va_list ap); + +/* if preemptive threads are used, these vars need some sort of locking! */ +/* pth is non-preemptive, so no locking is necessary (?) */ +static FILE *cu_debug_file = NULL; +static char *cu_debug_filename = NULL; + +static void +cu_vdebug(const char *file, int line, const char *func, + const char *format, va_list ap) +{ + FILE *f; + if(cu_debug_file != NULL) { + f = cu_debug_file; + } else { + /* stderr might be redirected to /dev/null. in that case */ + /* you'll not see anything... */ + f = stderr; + } + + fprintf(f, "%s:%d:%s(): ", + file, line, func); + vfprintf(f, format, ap); + fprintf(f, "\n"); + fflush(f); +} /* static void cu_vdebug(const char *file, int line, const char *func, + const char *format, va_list ap) */ + +void +cu_debug(const char *file, int line, const char *func, + const char *format, ...) +{ + va_list ap; + + va_start(ap, format); + cu_vdebug(file, line, func, format, ap); + va_end(ap); +} /* void cu_debug(const char *file, int line, const char *func, + const char *format, ...) */ + +int +cu_debug_startfile(const char *file, int line, const char *func, + const char *format, ...) +{ + va_list ap; + + if(cu_debug_file != NULL) { + DBG("Don't call this function more then once without" + " calling cu_debug_stopfile()."); + return EXIT_FAILURE; + } + + if(cu_debug_filename == NULL) { + cu_debug_filename = sstrdup(DEFAULT_FILENAME); + } + + cu_debug_file = fopen(cu_debug_filename, "a"); + if(cu_debug_file == NULL) { + DBG("Cannot open debug file %s: %s.\n", + cu_debug_filename, strerror(errno)); + return EXIT_FAILURE; + } + + va_start(ap, format); + cu_vdebug(file, line, func, format, ap); + va_end(ap); + + return EXIT_SUCCESS; +} /* int cu_debug_start(const char *file, int line, const char *func, + const char *format, ...) */ + +int +cu_debug_stopfile(const char *file, int line, const char *func, + const char *format, ...) +{ + va_list ap; + + va_start(ap, format); + cu_vdebug(file, line, func, format, ap); + va_end(ap); + + if(cu_debug_file == NULL) { + DBG("Don't call this function more then once or without" + " calling cu_debug_startfile()."); + return EXIT_FAILURE; + } + + if(fclose(cu_debug_file) != 0) { + DBG("Cannot close debug file %s: %s.\n", + cu_debug_filename, strerror(errno)); + return EXIT_FAILURE; + } + cu_debug_file = NULL; + + sfree(cu_debug_filename); + + return EXIT_SUCCESS; +} /* int cu_debug_stop(const char *file, int line, const char *func, + const char *format, ...) */ + +int +cu_debug_resetfile(const char *file, int line, const char *func, + const char *filename) +{ + if(filename == NULL) { + DBG("You have to set filename when calling this function!\n"); + return EXIT_FAILURE; + } + if(cu_debug_file != NULL) { + char *save_filename = NULL; + + /* DBG_STARTFILE was called already */ + /* reopen file */ + + DBG_STOPFILE("Closing %s and reopening %s.", + cu_debug_filename, filename); + save_filename = smalloc(strlen(cu_debug_filename)+1); + sstrncpy(save_filename, cu_debug_filename, + strlen(cu_debug_filename)+1); + cu_debug_filename = smalloc(strlen(filename)+1); + sstrncpy(cu_debug_filename, filename, strlen(filename)+1); + DBG_STARTFILE("Reopening %s after closing %s.", + filename, save_filename); + sfree(save_filename); + return EXIT_SUCCESS; + } + + /* DBG_STARTFILE was NOT called already */ + /* setting filename only */ + + if(cu_debug_filename != NULL) { + sfree(cu_debug_filename); + } + cu_debug_filename = smalloc(strlen(filename)+1); + sstrncpy(cu_debug_filename, filename, strlen(filename)+1); + + return EXIT_SUCCESS; +} /* int cu_debug_resetfile(const char *file, int line, const char *func, + const char *filename) */ + +#else /* !COLLECT_DEBUG */ + +void +cu_debug(const char *file, int line, const char *func, const char *format, ...) +{ +} +int +cu_debug_startfile(const char *file, int line, const char *func, const char *format, ...) +{ + return EXIT_SUCCESS; +} +int +cu_debug_stopfile(const char *file, int line, const char *func, const char *format, ...) +{ + return EXIT_SUCCESS; +} +int +cu_debug_resetfile(const char *file, int line, const char *func, const char *filename) +{ + return EXIT_SUCCESS; +} + +#endif /* COLLECT_DEBUG */ + diff --git a/src/utils_debug.h b/src/utils_debug.h new file mode 100644 index 00000000..247b141d --- /dev/null +++ b/src/utils_debug.h @@ -0,0 +1,50 @@ +/** + * collectd - src/utils_debug.h + * Copyright (C) 2005 Niki W. Waibel + * + * This program is free software; you can redistribute it and/ + * or modify it under the terms of the GNU General Public Li- + * cence as published by the Free Software Foundation; either + * version 2 of the Licence, or any later version. + * + * This program is distributed in the hope that it will be use- + * ful, but WITHOUT ANY WARRANTY; without even the implied war- + * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * See the GNU General Public Licence for more details. + * + * You should have received a copy of the GNU General Public + * Licence along with this program; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, + * USA. + * + * Author: + * Niki W. Waibel +**/ + +#if !COLLECTD_UTILS_DEBUG_H +#define COLLECTD_UTILS_DEBUG_H 1 + +#define DBG(...) cu_debug(__FILE__, __LINE__, __func__, \ + __VA_ARGS__) + +#define DBG_STARTFILE(...) cu_debug_startfile(__FILE__, __LINE__, \ + __func__, __VA_ARGS__) +#define DBG_STOPFILE(...) cu_debug_stopfile(__FILE__, __LINE__, \ + __func__, __VA_ARGS__) + +#define DBG_RESETFILE(file) cu_debug_resetfile(__FILE__, __LINE__, __func__, \ + filename) + +void cu_debug(const char *file, int line, const char *func, + const char *format, ...); + +int cu_debug_startfile(const char *file, int line, const char *func, + const char *format, ...); +int cu_debug_stopfile(const char *file, int line, const char *func, + const char *format, ...); + +int cu_debug_resetfile(const char *file, int line, const char *func, + const char *filename); + +#endif /* !COLLECTD_UTILS_DEBUG_H */ +