instr_time.h File Reference

#include <time.h>

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Data Structures
struct	instr_time

Macros
#define	NS_PER_S   INT64CONST(1000000000)
#define	NS_PER_MS   INT64CONST(1000000)
#define	NS_PER_US   INT64CONST(1000)
#define	PG_INSTR_CLOCK   CLOCK_REALTIME
#define	INSTR_TIME_SET_CURRENT(t)    ((t) = pg_clock_gettime_ns())
#define	INSTR_TIME_GET_NANOSEC(t)    ((int64) (t).ticks)
#define	INSTR_TIME_IS_ZERO(t)   ((t).ticks == 0)
#define	INSTR_TIME_SET_ZERO(t)   ((t).ticks = 0)
#define	INSTR_TIME_SET_CURRENT_LAZY(t)    (INSTR_TIME_IS_ZERO(t) ? INSTR_TIME_SET_CURRENT(t), true : false)
#define	INSTR_TIME_ADD(x, y)    ((x).ticks += (y).ticks)
#define	INSTR_TIME_SUBTRACT(x, y)    ((x).ticks -= (y).ticks)
#define	INSTR_TIME_ACCUM_DIFF(x, y, z)    ((x).ticks += (y).ticks - (z).ticks)
#define	INSTR_TIME_GET_DOUBLE(t)    ((double) INSTR_TIME_GET_NANOSEC(t) / NS_PER_S)
#define	INSTR_TIME_GET_MILLISEC(t)    ((double) INSTR_TIME_GET_NANOSEC(t) / NS_PER_MS)
#define	INSTR_TIME_GET_MICROSEC(t)    (INSTR_TIME_GET_NANOSEC(t) / NS_PER_US)

Typedefs
typedef struct instr_time	instr_time

Functions
static instr_time	pg_clock_gettime_ns (void)

Macro Definition Documentation

INSTR_TIME_ACCUM_DIFF

#define INSTR_TIME_ACCUM_DIFF	(		x,
			y,
			z
	)		((x).ticks += (y).ticks - (z).ticks)

Definition at line 184 of file instr_time.h.

INSTR_TIME_ADD

#define INSTR_TIME_ADD	(		x,
			y
	)		((x).ticks += (y).ticks)

Definition at line 178 of file instr_time.h.

INSTR_TIME_GET_DOUBLE

#define INSTR_TIME_GET_DOUBLE

(

t

)

((double) INSTR_TIME_GET_NANOSEC(t) / NS_PER_S)

Definition at line 188 of file instr_time.h.

INSTR_TIME_GET_MICROSEC

#define INSTR_TIME_GET_MICROSEC

(

t

)

(INSTR_TIME_GET_NANOSEC(t) / NS_PER_US)

Definition at line 194 of file instr_time.h.

INSTR_TIME_GET_MILLISEC

#define INSTR_TIME_GET_MILLISEC

(

t

)

((double) INSTR_TIME_GET_NANOSEC(t) / NS_PER_MS)

Definition at line 191 of file instr_time.h.

INSTR_TIME_GET_NANOSEC

#define INSTR_TIME_GET_NANOSEC

(

t

)

((int64) (t).ticks)

Definition at line 125 of file instr_time.h.

INSTR_TIME_IS_ZERO

#define INSTR_TIME_IS_ZERO

(

t

)

((t).ticks == 0)

Definition at line 169 of file instr_time.h.

INSTR_TIME_SET_CURRENT

#define INSTR_TIME_SET_CURRENT

(

t

)

((t) = pg_clock_gettime_ns())

Definition at line 122 of file instr_time.h.

INSTR_TIME_SET_CURRENT_LAZY

#define INSTR_TIME_SET_CURRENT_LAZY

(

t

)

(INSTR_TIME_IS_ZERO(t) ? INSTR_TIME_SET_CURRENT(t), true : false)

Definition at line 174 of file instr_time.h.

INSTR_TIME_SET_ZERO

#define INSTR_TIME_SET_ZERO

(

t

)

((t).ticks = 0)

Definition at line 172 of file instr_time.h.

INSTR_TIME_SUBTRACT

#define INSTR_TIME_SUBTRACT	(		x,
			y
	)		((x).ticks -= (y).ticks)

Definition at line 181 of file instr_time.h.

NS_PER_MS

#define NS_PER_MS   INT64CONST(1000000)

Definition at line 78 of file instr_time.h.

NS_PER_S

#define NS_PER_S   INT64CONST(1000000000)

Definition at line 77 of file instr_time.h.

NS_PER_US

#define NS_PER_US   INT64CONST(1000)

Definition at line 79 of file instr_time.h.

PG_INSTR_CLOCK

#define PG_INSTR_CLOCK   CLOCK_REALTIME

Definition at line 106 of file instr_time.h.

Typedef Documentation

instr_time

typedef struct instr_time instr_time

Function Documentation

pg_clock_gettime_ns()

static instr_time pg_clock_gettime_ns ( void  )

inlinestatic

Definition at line 111 of file instr_time.h.

{
    instr_time  now;
    struct timespec tmp;
 
    clock_gettime(PG_INSTR_CLOCK, &tmp);
    now.ticks = tmp.tv_sec * NS_PER_S + tmp.tv_nsec;
 
    return now;
}

References now(), NS_PER_S, and PG_INSTR_CLOCK.