tools/perf/util/time-utils.h

Source file repositories/reference/linux-study-clean/tools/perf/util/time-utils.h

File Facts

System
Linux kernel
Corpus path
tools/perf/util/time-utils.h
Extension
.h
Size
1440 bytes
Lines
52
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct perf_time_interval {
	u64 start, end;
};

int parse_nsec_time(const char *str, u64 *ptime);

int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr);

int perf_time__percent_parse_str(struct perf_time_interval *ptime_buf, int num,
				 const char *ostr, u64 start, u64 end);

struct perf_time_interval *perf_time__range_alloc(const char *ostr, int *size);

bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp);

bool perf_time__ranges_skip_sample(struct perf_time_interval *ptime_buf,
				   int num, u64 timestamp);

struct perf_session;

int perf_time__parse_for_ranges_reltime(const char *str, struct perf_session *session,
				struct perf_time_interval **ranges,
				int *range_size, int *range_num,
				bool reltime);

int perf_time__parse_for_ranges(const char *str, struct perf_session *session,
				struct perf_time_interval **ranges,
				int *range_size, int *range_num);

int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz);
int timestamp__scnprintf_nsec(u64 timestamp, char *buf, size_t sz);

int fetch_current_timestamp(char *buf, size_t sz);

static inline unsigned long long rdclock(void)
{
	struct timespec ts;

	clock_gettime(CLOCK_MONOTONIC, &ts);
	return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
}

#endif

Annotation

Implementation Notes