perf_skid.c File Reference

#include <stdlib.h>
#include <limits.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <sys/syscall.h>
#include <linux/perf_event.h>
#include "perf_constants.h"
#include "perf_skid.h"
#include "perf_event_open.h"

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Macros
#define	HPCRUN_OPTION_PRECISE_IP   "HPCRUN_PRECISE_IP"
#define	PRECISE_IP_CHAR_MODIFIER   'p'
#define	PRECISE_IP_SUFFIX   ":p"
#define	PRECISE_IP_MAX_SUFFIX   ":P"
#define	DELIMITER_HOWOFTEN   '@'

Functions
static long	getEnvLong (const char *env_var, long default_value)
static char *	strlaststr (const char *haystack, const char *needle)
static const char *	find_precise_suffix (const char *s, const char *suffix, char allowed)
int	perf_skid_set_max_precise_ip (struct perf_event_attr *attr)
u64	perf_skid_get_precise_ip (struct perf_event_attr *attr)
int	perf_skid_parse_event (const char *event_string, char **event_string_without_skidmarks)

Variables
const int	perf_skid_precision []
const int	perf_skid_flavors = sizeof(perf_skid_precision)/sizeof(int)

Macro Definition Documentation

DELIMITER_HOWOFTEN

#define DELIMITER_HOWOFTEN   '@'

Definition at line 84 of file perf_skid.c.

HPCRUN_OPTION_PRECISE_IP

#define HPCRUN_OPTION_PRECISE_IP   "HPCRUN_PRECISE_IP"

Definition at line 77 of file perf_skid.c.

PRECISE_IP_CHAR_MODIFIER

#define PRECISE_IP_CHAR_MODIFIER   'p'

Definition at line 79 of file perf_skid.c.

PRECISE_IP_MAX_SUFFIX

#define PRECISE_IP_MAX_SUFFIX   ":P"

Definition at line 82 of file perf_skid.c.

PRECISE_IP_SUFFIX

#define PRECISE_IP_SUFFIX   ":p"

Definition at line 81 of file perf_skid.c.

Function Documentation

find_precise_suffix()

static const char* find_precise_suffix ( const char *  s, const char *  suffix, char  allowed  )

static

Definition at line 143 of file perf_skid.c.

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getEnvLong()

static long getEnvLong ( const char *  env_var, long  default_value  )

static

Definition at line 109 of file perf_skid.c.

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perf_skid_get_precise_ip()

u64 perf_skid_get_precise_ip

(

struct perf_event_attr *

attr

)

Definition at line 207 of file perf_skid.c.

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perf_skid_parse_event()

int perf_skid_parse_event	(	const char *	event_string,
		char **	event_string_without_skidmarks
	)

Definition at line 243 of file perf_skid.c.

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perf_skid_set_max_precise_ip()

int perf_skid_set_max_precise_ip

(

struct perf_event_attr *

attr

)

set precise_ip attribute to the max value

TODO: this method only works on some platforms, and not general enough on all the platforms.

Definition at line 176 of file perf_skid.c.

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strlaststr()

static char* strlaststr ( const char *  haystack, const char *  needle  )

static

Definition at line 126 of file perf_skid.c.

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Variable Documentation

perf_skid_flavors

const int perf_skid_flavors = sizeof(perf_skid_precision)/sizeof(int)

Definition at line 98 of file perf_skid.c.

perf_skid_precision

const int perf_skid_precision[]

Initial value:

= {
  PERF_EVENT_SKID_ARBITRARY,
  PERF_EVENT_SKID_CONSTANT,
  PERF_EVENT_SKID_ZERO_REQUESTED,
  PERF_EVENT_SKID_ZERO_REQUIRED
}

Definition at line 91 of file perf_skid.c.