mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2025-11-03 09:01:40 -05:00
bb05617414
This commit matches sway's 2dc4978d8af326c310057ca8fd22a4c7f5d09335. To help ensure a reproducible build (when debug info is disabled), the meson build script now uses the -fmacro-prefix-map command line argument supported by GCC to strip the build-path dependent bytes of each __FILE__ string used by wlr_log and related functions. A rather ugly algorithm is used to compute the relative path between the build and source folders, because meson has no specific function for this. When the compiler does not support -fmacro-prefix-map, fall back to shifting the start of each __FILE__ string by the length of the relative path to the source directory.
70 lines
2.2 KiB
C
70 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 by email and follow a 1-year deprecation
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* schedule. Send an email to ~sircmpwn/wlroots-announce+subscribe@lists.sr.ht
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* to receive these announcements.
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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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// Will log all messages less than or equal to `verbosity`
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// If `callback` is NULL, wlr will use its default logger.
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// The function can be called multiple times to update the verbosity or
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// callback function.
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void wlr_log_init(enum wlr_log_importance verbosity, wlr_log_func_t callback);
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// Returns the log verbosity provided to wlr_log_init
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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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