77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* This is a stable interface of wlroots. Future changes will be limited to:
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*
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* - New functions
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* - New struct members
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* - New enum members
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*
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* Note that wlroots does not make an ABI compatibility promise - in the future,
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* the layout and size of structs used by wlroots may change, requiring code
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* depending on this header to be recompiled (but not edited).
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*
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* Breaking changes are announced in the release notes and follow a 1-year
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* deprecation schedule.
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*/
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#ifndef WLR_UTIL_LOG_H
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#define WLR_UTIL_LOG_H
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#include <stdbool.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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enum wlr_log_importance {
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WLR_SILENT = 0,
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WLR_ERROR = 1,
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WLR_INFO = 2,
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WLR_DEBUG = 3,
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WLR_LOG_IMPORTANCE_LAST,
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};
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typedef void (*wlr_log_func_t)(enum wlr_log_importance importance,
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const char *fmt, va_list args);
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/**
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* Set the log verbosity and callback.
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*
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* Only messages less than or equal to the supplied verbosity will be logged.
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* If the callback is NULL, the default logger is used.
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*
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* This function can be called multiple times to update the verbosity or
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* callback function.
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*/
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void wlr_log_init(enum wlr_log_importance verbosity, wlr_log_func_t callback);
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/**
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* Get the current log verbosity configured by wlr_log_init().
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*/
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enum wlr_log_importance wlr_log_get_verbosity(void);
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#ifdef __GNUC__
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#define _WLR_ATTRIB_PRINTF(start, end) __attribute__((format(printf, start, end)))
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#else
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#define _WLR_ATTRIB_PRINTF(start, end)
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#endif
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void _wlr_log(enum wlr_log_importance verbosity, const char *format, ...) _WLR_ATTRIB_PRINTF(2, 3);
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void _wlr_vlog(enum wlr_log_importance verbosity, const char *format, va_list args) _WLR_ATTRIB_PRINTF(2, 0);
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#ifdef _WLR_REL_SRC_DIR
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// strip prefix from __FILE__, leaving the path relative to the project root
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#define _WLR_FILENAME ((const char *)__FILE__ + sizeof(_WLR_REL_SRC_DIR) - 1)
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#else
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#define _WLR_FILENAME __FILE__
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#endif
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#define wlr_log(verb, fmt, ...) \
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_wlr_log(verb, "[%s:%d] " fmt, _WLR_FILENAME, __LINE__, ##__VA_ARGS__)
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#define wlr_vlog(verb, fmt, args) \
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_wlr_vlog(verb, "[%s:%d] " fmt, _WLR_FILENAME, __LINE__, args)
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#define wlr_log_errno(verb, fmt, ...) \
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wlr_log(verb, fmt ": %s", ##__VA_ARGS__, strerror(errno))
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#endif
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