icex2
178d4afec8
Internally, this was already used but it lacked a clean public interface to set different log levels from the outside. Useful for various command line tooling to implement verbosity levels, e.g. -v, -vv, -vvv
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
#ifndef UTIL_LOG_H
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#define UTIL_LOG_H
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#include <stddef.h>
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#include <stdlib.h>
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#include "bemanitools/glue.h"
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#include "util/defs.h"
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/* Dynamically retargetable logging system modeled on (and potentially
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integrateable with) the one found in AVS2 */
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/* BUILD_MODULE is passed in as a command-line #define by the makefile */
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#ifndef LOG_MODULE
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#define LOG_MODULE STRINGIFY(BUILD_MODULE)
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#endif
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#ifndef LOG_SUPPRESS
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#define log_misc(...) log_impl_misc(LOG_MODULE, __VA_ARGS__)
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#define log_info(...) log_impl_info(LOG_MODULE, __VA_ARGS__)
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#define log_warning(...) log_impl_warning(LOG_MODULE, __VA_ARGS__)
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/* This doesn't really belong here, but it's what libavs does so w/e */
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#define log_assert(x) \
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do { \
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if (!(x)) { \
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log_assert_body(__FILE__, __LINE__, __FUNCTION__); \
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} \
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} while (0)
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#else
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#define log_misc(...)
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#define log_info(...)
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#define log_warning(...)
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#define log_assert(x) \
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do { \
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if (!(x)) { \
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abort(); \
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} \
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} while (0)
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#endif
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#define log_fatal(...) \
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do { \
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log_impl_fatal(LOG_MODULE, __VA_ARGS__); \
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abort(); \
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} while (0)
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typedef void (*log_writer_t)(void *ctx, const char *chars, size_t nchars);
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extern log_formatter_t log_impl_misc;
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extern log_formatter_t log_impl_info;
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extern log_formatter_t log_impl_warning;
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extern log_formatter_t log_impl_fatal;
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enum log_level {
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LOG_LEVEL_FATAL = 0,
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LOG_LEVEL_WARNING = 1,
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LOG_LEVEL_INFO = 2,
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LOG_LEVEL_MISC = 3,
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};
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void log_assert_body(const char *file, int line, const char *function);
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void log_to_external(
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log_formatter_t misc,
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log_formatter_t info,
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log_formatter_t warning,
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log_formatter_t fatal);
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void log_to_writer(log_writer_t writer, void *ctx);
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void log_set_level(enum log_level new_level);
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/* I tried to make this API match the function signature of the AVS log writer
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callback, but then the signature changed and the explicit line breaks
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being passed to that callback went away. So we don't try to track that API
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any more. Launcher defines its own custom writer anyway. */
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void log_writer_debug(void *ctx, const char *chars, size_t nchars);
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void log_writer_stdout(void *ctx, const char *chars, size_t nchars);
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void log_writer_stderr(void *ctx, const char *chars, size_t nchars);
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void log_writer_file(void *ctx, const char *chars, size_t nchars);
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void log_writer_null(void *ctx, const char *chars, size_t nchars);
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#endif
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