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08ce2613c8
If the assertion handler is not tagged, a lot of false positives are generated by clang static analyzer. > The Clang-specific 'analyzer_noreturn' attribute is almost identical > to 'noreturn' except that it is ignored by the compiler for the > purposes of code generation. > > This attribute is useful for annotating assertion handlers that > actually can return, but for the purpose of using the analyzer we > want to pretend that such functions do not return. https://clang-analyzer.llvm.org/annotations.html#custom_assertions
63 lines
2 KiB
C
63 lines
2 KiB
C
#ifndef _SWAY_LOG_H
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#define _SWAY_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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typedef enum {
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SWAY_SILENT = 0,
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SWAY_ERROR = 1,
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SWAY_INFO = 2,
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SWAY_DEBUG = 3,
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SWAY_LOG_IMPORTANCE_LAST,
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} sway_log_importance_t;
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#ifdef __GNUC__
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#define ATTRIB_PRINTF(start, end) __attribute__((format(printf, start, end)))
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#else
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#define ATTRIB_PRINTF(start, end)
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#endif
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#if !defined(CLANG_ANALYZER_NORETURN) && defined(__has_feature)
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#if __has_feature(attribute_analyzer_noreturn)
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#define CLANG_ANALYZER_NORETURN __attribute__((analyzer_noreturn))
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#endif
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#endif
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#ifndef CLANG_ANALYZER_NORETURN
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#define CLANG_ANALYZER_NORETURN
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#endif
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void error_handler(int sig);
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typedef void (*terminate_callback_t)(int exit_code);
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// Will log all messages less than or equal to `verbosity`
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// The `terminate` callback is called by `sway_abort`
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void sway_log_init(sway_log_importance_t verbosity, terminate_callback_t terminate);
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void _sway_log(sway_log_importance_t verbosity, const char *format, ...) ATTRIB_PRINTF(2, 3);
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void _sway_vlog(sway_log_importance_t verbosity, const char *format, va_list args) ATTRIB_PRINTF(2, 0);
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void _sway_abort(const char *filename, ...) ATTRIB_PRINTF(1, 2);
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bool _sway_assert(bool condition, const char* format, ...) ATTRIB_PRINTF(2, 3) CLANG_ANALYZER_NORETURN;
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// TODO: get meson to precompute this, for better reproducibility/less overhead
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const char *_sway_strip_path(const char *filepath);
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#define sway_log(verb, fmt, ...) \
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_sway_log(verb, "[%s:%d] " fmt, _sway_strip_path(__FILE__), __LINE__, ##__VA_ARGS__)
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#define sway_vlog(verb, fmt, args) \
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_sway_vlog(verb, "[%s:%d] " fmt, _sway_strip_path(__FILE__), __LINE__, args)
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#define sway_log_errno(verb, fmt, ...) \
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sway_log(verb, fmt ": %s", ##__VA_ARGS__, strerror(errno))
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#define sway_abort(FMT, ...) \
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_sway_abort("[%s:%d] " FMT, _sway_strip_path(__FILE__), __LINE__, ##__VA_ARGS__)
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#define sway_assert(COND, FMT, ...) \
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_sway_assert(COND, "[%s:%d] %s:" FMT, _sway_strip_path(__FILE__), __LINE__, __PRETTY_FUNCTION__, ##__VA_ARGS__)
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#endif
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