NAME

getrusage − get information about resource utilisation

SYNOPSIS

#include <sys/resource.h>

int getrusage(int who, struct rusage *r_usage);

DESCRIPTION

The getrusage() function provides measures of the resources used by the current process or its terminated and waited−for child processes.  If  the value of the who argument is RUSAGE_SELF, information is returned about resources used by the current process. If the value of the who argument is RUSAGE_CHILDREN, information is returned about resources used by the terminated and waited−for children of the current process. If the child is never waited for (for instance, if the parent has SA_NOCLDWAIT set or sets SIGCHLD to SIG_IGN), the resource information for the child process is discarded and not included in the resource information provided by getrusage().  The r_usage argument is a pointer to an object of type struct rusage in which the returned information is stored. 

RETURN VALUE

Upon successful completion, getrusage() returns 0. Otherwise, −1 is  returned, and errno is set to indicate the error. 

ERRORS

The getrusage() function will fail if:

[EINVAL] The value of the who argument is not valid. 

SEE ALSO

exit(), sigaction(), time(), times(), wait(), <sys/resource.h>. 

CHANGE HISTORY

First released in Issue 4, Version 2. 

Hewlett-Packard Company  —  HP-UX Release 10.20:  July 1996