Esnmp_sysuptime – Compaq AAR04BCTE User Manual

Page 76

eSNMP API Routines
esnmp_sysuptime

esnmp_sysuptime

Converts UNIX system time obtained from

gettimeofday

into a value with the

same time base as

sysUpTime

Format

unsigned int esnmp_sysuptime ( struct timeval *timestamp ) ;

Argument

timestamp

A pointer to

struct timeval

, which contains a value obtained from the

gettimeofday

system call. The structure is defined in

include/sys/time.h

A null pointer means return the current

sysUpTime

Description

This routine provides a mechanism to convert UNIX timestamps into eSNMP

TimeTicks

. The function returns the value that

sysUpTime

held when the passed

timestamp was

now

This routine can be used as a

TimeTicks

data type (the time since the eSNMP

master agent started) in hundredths of a second. The time base is obtained from
the master agent in response to

esnmp_init

, so calls to this function before that

time will not be accurate.

Return Values

An error occurred because a

gettimeofday

function failed. Otherwise,

timestamp

contains

the time in hundredths of a second since the
master agent started.

Example

#include
#include
struct timeval timestamp;

gettimeofday(×tamp, NULL);

.
.
.

o_integer(vb, object, esnmp_sysuptime(×tamp));

5–18 eSNMP API Routines