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Diffstat (limited to 'src/include/trace.h')
| -rw-r--r-- | src/include/trace.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/include/trace.h b/src/include/trace.h new file mode 100644 index 000000000..79e6ba8ef --- /dev/null +++ b/src/include/trace.h @@ -0,0 +1,80 @@ +/* Copyright (C) 2016- Free Software Foundation, Inc. + Written by Bertrand Garrigues (bertrand.garrigues@laposte.net) + +This file is part of groff. + +groff 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 3 of the License, or +(at your option) any later version. + +groff 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 this program. If not, see <http://www.gnu.org/licenses/>. */ + +#ifndef TRACE_H +#define TRACE_H + +#define LEVEL_DEBUG 3 +#define LEVEL_INFO 2 +#define LEVEL_ERROR 1 +#define LEVEL_QUIET 0 + +#include <stdio.h> + +#ifndef TRACE_ALIGN_LENGTH +#define TRACE_ALIGN_LENGTH -1 +#endif + +// __FILE__ gives the full path of the file, we just want the file name. +#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__) + +#ifndef DEACTIVATE_TRACES + +#define trace_define_category(module_name, default_level) \ + int trace_category_level_##module_name = default_level + +#define trace_use_category(module_name) \ + extern int trace_category_level_##module_name + +#define trace_set_level(module_name, level) \ + do { \ + trace_category_level_##module_name = level; \ + } while(0) + +#define trace_print(module_name, min_level, fmt, args...) \ + do { \ + if ((trace_category_level_##module_name) >= (min_level)) { \ + int res##__LINE__; \ + int length_align##__LINE__ = TRACE_ALIGN_LENGTH; \ + res##__LINE__ = fprintf(stderr, "[%s:%d:%s]", __FILENAME__, __LINE__, __FUNCTION__); \ + if (length_align##__LINE__ == -1) \ + fprintf(stderr, fmt "\n", ##args); \ + else \ + fprintf(stderr, "%*s" fmt "\n", TRACE_ALIGN_LENGTH - res##__LINE__, #module_name": ", ##args); \ + fflush(stderr); \ + } \ + } while(0) + +#define trace_debug(module_name, fmt, args...) \ + trace_print(module_name, LEVEL_DEBUG, fmt, ##args) + +#define trace_info(module_name, fmt, args...) \ + trace_print(module_name, LEVEL_INFO, fmt, ##args) + +#define trace_error(module_name, fmt, args...) \ + trace_print(module_name, LEVEL_ERROR, fmt, ##args) + +#else /* DEACTIVATE_TRACES */ +#define trace_debug(args...) +#define trace_info(args...) +#define trace_error(args...) +#define trace_define_category(args...) +#define trace_set_level(args...) +#endif /* DEACTIVATE_TRACES */ + +#endif |