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| #ifndef TRACE_H | |
| #define TRACE_H | |
| #include "git-compat-util.h" | |
| #include "strbuf.h" | |
| struct trace_key { | |
| const char * const key; | |
| int fd; | |
| unsigned int initialized : 1; | |
| unsigned int need_close : 1; | |
| }; | |
| #define TRACE_KEY_INIT(name) { "GIT_TRACE_" #name, 0, 0, 0 } | |
| extern void trace_repo_setup(const char *prefix); | |
| extern int trace_want(struct trace_key *key); | |
| extern void trace_disable(struct trace_key *key); | |
| extern uint64_t getnanotime(void); | |
| extern void trace_command_performance(const char **argv); | |
| extern void trace_verbatim(struct trace_key *key, const void *buf, unsigned len); | |
| #ifndef HAVE_VARIADIC_MACROS | |
| __attribute__((format (printf, 1, 2))) | |
| extern void trace_printf(const char *format, ...); | |
| __attribute__((format (printf, 2, 3))) | |
| extern void trace_printf_key(struct trace_key *key, const char *format, ...); | |
| __attribute__((format (printf, 2, 3))) | |
| extern void trace_argv_printf(const char **argv, const char *format, ...); | |
| extern void trace_strbuf(struct trace_key *key, const struct strbuf *data); | |
| /* Prints elapsed time (in nanoseconds) if GIT_TRACE_PERFORMANCE is enabled. */ | |
| __attribute__((format (printf, 2, 3))) | |
| extern void trace_performance(uint64_t nanos, const char *format, ...); | |
| /* Prints elapsed time since 'start' if GIT_TRACE_PERFORMANCE is enabled. */ | |
| __attribute__((format (printf, 2, 3))) | |
| extern void trace_performance_since(uint64_t start, const char *format, ...); | |
| #else | |
| /* | |
| * Macros to add file:line - see above for C-style declarations of how these | |
| * should be used. | |
| */ | |
| /* | |
| * TRACE_CONTEXT may be set to __FUNCTION__ if the compiler supports it. The | |
| * default is __FILE__, as it is consistent with assert(), and static function | |
| * names are not necessarily unique. | |
| * | |
| * __FILE__ ":" __FUNCTION__ doesn't work with GNUC, as __FILE__ is supplied | |
| * by the preprocessor as a string literal, and __FUNCTION__ is filled in by | |
| * the compiler as a string constant. | |
| */ | |
| #ifndef TRACE_CONTEXT | |
| # define TRACE_CONTEXT __FILE__ | |
| #endif | |
| /* | |
| * Note: with C99 variadic macros, __VA_ARGS__ must include the last fixed | |
| * parameter ('format' in this case). Otherwise, a call without variable | |
| * arguments will have a surplus ','. E.g.: | |
| * | |
| * #define foo(format, ...) bar(format, __VA_ARGS__) | |
| * foo("test"); | |
| * | |
| * will expand to | |
| * | |
| * bar("test",); | |
| * | |
| * which is invalid (note the ',)'). With GNUC, '##__VA_ARGS__' drops the | |
| * comma, but this is non-standard. | |
| */ | |
| #define trace_printf(...) \ | |
| trace_printf_key_fl(TRACE_CONTEXT, __LINE__, NULL, __VA_ARGS__) | |
| #define trace_printf_key(key, ...) \ | |
| trace_printf_key_fl(TRACE_CONTEXT, __LINE__, key, __VA_ARGS__) | |
| #define trace_argv_printf(argv, ...) \ | |
| trace_argv_printf_fl(TRACE_CONTEXT, __LINE__, argv, __VA_ARGS__) | |
| #define trace_strbuf(key, data) \ | |
| trace_strbuf_fl(TRACE_CONTEXT, __LINE__, key, data) | |
| #define trace_performance(nanos, ...) \ | |
| trace_performance_fl(TRACE_CONTEXT, __LINE__, nanos, __VA_ARGS__) | |
| #define trace_performance_since(start, ...) \ | |
| trace_performance_fl(TRACE_CONTEXT, __LINE__, getnanotime() - (start), \ | |
| __VA_ARGS__) | |
| /* backend functions, use non-*fl macros instead */ | |
| __attribute__((format (printf, 4, 5))) | |
| extern void trace_printf_key_fl(const char *file, int line, struct trace_key *key, | |
| const char *format, ...); | |
| __attribute__((format (printf, 4, 5))) | |
| extern void trace_argv_printf_fl(const char *file, int line, const char **argv, | |
| const char *format, ...); | |
| extern void trace_strbuf_fl(const char *file, int line, struct trace_key *key, | |
| const struct strbuf *data); | |
| __attribute__((format (printf, 4, 5))) | |
| extern void trace_performance_fl(const char *file, int line, | |
| uint64_t nanos, const char *fmt, ...); | |
| #endif /* HAVE_VARIADIC_MACROS */ | |
| #endif /* TRACE_H */ |