155 lines
4.7 KiB
C
155 lines
4.7 KiB
C
#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;
|
|
};
|
|
|
|
extern struct trace_key trace_default_key;
|
|
|
|
#define TRACE_KEY_INIT(name) { "GIT_TRACE_" #name, 0, 0, 0 }
|
|
extern struct trace_key trace_perf_key;
|
|
extern struct trace_key trace_setup_key;
|
|
|
|
void trace_repo_setup(const char *prefix);
|
|
int trace_want(struct trace_key *key);
|
|
void trace_disable(struct trace_key *key);
|
|
uint64_t getnanotime(void);
|
|
void trace_command_performance(const char **argv);
|
|
void trace_verbatim(struct trace_key *key, const void *buf, unsigned len);
|
|
uint64_t trace_performance_enter(void);
|
|
|
|
#ifndef HAVE_VARIADIC_MACROS
|
|
|
|
__attribute__((format (printf, 1, 2)))
|
|
void trace_printf(const char *format, ...);
|
|
|
|
__attribute__((format (printf, 2, 3)))
|
|
void trace_printf_key(struct trace_key *key, const char *format, ...);
|
|
|
|
__attribute__((format (printf, 2, 3)))
|
|
void trace_argv_printf(const char **argv, const char *format, ...);
|
|
|
|
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)))
|
|
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)))
|
|
void trace_performance_since(uint64_t start, const char *format, ...);
|
|
|
|
__attribute__((format (printf, 1, 2)))
|
|
void trace_performance_leave(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_key(key, ...) \
|
|
do { \
|
|
if (trace_pass_fl(key)) \
|
|
trace_printf_key_fl(TRACE_CONTEXT, __LINE__, key, \
|
|
__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define trace_printf(...) trace_printf_key(&trace_default_key, __VA_ARGS__)
|
|
|
|
#define trace_argv_printf(argv, ...) \
|
|
do { \
|
|
if (trace_pass_fl(&trace_default_key)) \
|
|
trace_argv_printf_fl(TRACE_CONTEXT, __LINE__, \
|
|
argv, __VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define trace_strbuf(key, data) \
|
|
do { \
|
|
if (trace_pass_fl(key)) \
|
|
trace_strbuf_fl(TRACE_CONTEXT, __LINE__, key, data);\
|
|
} while (0)
|
|
|
|
#define trace_performance(nanos, ...) \
|
|
do { \
|
|
if (trace_pass_fl(&trace_perf_key)) \
|
|
trace_performance_fl(TRACE_CONTEXT, __LINE__, nanos,\
|
|
__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define trace_performance_since(start, ...) \
|
|
do { \
|
|
if (trace_pass_fl(&trace_perf_key)) \
|
|
trace_performance_fl(TRACE_CONTEXT, __LINE__, \
|
|
getnanotime() - (start), \
|
|
__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define trace_performance_leave(...) \
|
|
do { \
|
|
if (trace_pass_fl(&trace_perf_key)) \
|
|
trace_performance_leave_fl(TRACE_CONTEXT, __LINE__, \
|
|
getnanotime(), \
|
|
__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
/* backend functions, use non-*fl macros instead */
|
|
__attribute__((format (printf, 4, 5)))
|
|
void trace_printf_key_fl(const char *file, int line, struct trace_key *key,
|
|
const char *format, ...);
|
|
__attribute__((format (printf, 4, 5)))
|
|
void trace_argv_printf_fl(const char *file, int line, const char **argv,
|
|
const char *format, ...);
|
|
void trace_strbuf_fl(const char *file, int line, struct trace_key *key,
|
|
const struct strbuf *data);
|
|
__attribute__((format (printf, 4, 5)))
|
|
void trace_performance_fl(const char *file, int line,
|
|
uint64_t nanos, const char *fmt, ...);
|
|
__attribute__((format (printf, 4, 5)))
|
|
void trace_performance_leave_fl(const char *file, int line,
|
|
uint64_t nanos, const char *fmt, ...);
|
|
static inline int trace_pass_fl(struct trace_key *key)
|
|
{
|
|
return key->fd || !key->initialized;
|
|
}
|
|
|
|
#endif /* HAVE_VARIADIC_MACROS */
|
|
|
|
#endif /* TRACE_H */
|