PR_SET_TIMING(2const)

NAME

PR_SET_TIMING - set the process timing mode

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#include <linux/prctl.h>  /* Definition of PR_* constants */
#include <sys/prctl.h>

int prctl(PR_SET_TIMING, long mode);

DESCRIPTION

Set whether to use (normal, traditional) statistical process timing or accurate timestamp-based process timing, by passing PR_TIMING_STATISTICAL or PR_TIMING_TIMESTAMP to mode.

RETURN VALUE

On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.

ERRORS

EINVAL: mode is not PR_TIMING_STATISTICAL.

STANDARDS

Linux.

HISTORY

Linux 2.6.0.

CAVEATS

PR_TIMING_TIMESTAMP is not currently implemented (attempting to set this mode will yield the error EINVAL).