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UNIXLIB37B
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getitmr
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1996-11-09
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58 lines
/****************************************************************************
*
* $Source: /unixb/home/unixlib/source/unixlib37/src/time/c/RCS/getitmr,v $
* $Date: 1996/10/30 21:59:01 $
* $Revision: 1.3 $
* $State: Rel $
* $Author: unixlib $
*
* $Log: getitmr,v $
* Revision 1.3 1996/10/30 21:59:01 unixlib
* Massive changes made by Nick Burret and Peter Burwood.
*
* Revision 1.2 1996/05/06 09:01:35 unixlib
* Updates to sources made by Nick Burrett, Peter Burwood and Simon Callan.
* Saved for 3.7a release.
*
* Revision 1.1 1996/04/19 21:35:00 simon
* Initial revision
*
***************************************************************************/
static const char rcs_id[] = "$Id: getitmr,v 1.3 1996/10/30 21:59:01 unixlib Rel $";
#include <stddef.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/unix.h>
#include <sys/syslib.h>
/* The `getitimer' function stores information about the timer
specified by 'which' in the structure pointed at by 'value'
The return value and error conditions are the same as for
`setitimer'.
Set *value to the current setting of timer 'which'.
Return 0 on success, -1 on errors. */
int
getitimer (enum __itimer_which which, struct itimerval *value)
{
/* We can't implement interval timers whilst executing in a task
window. */
if (__taskwindow)
{
errno = ENOSYS;
return -1;
}
if ((unsigned)which >= __MAX_ITIMERS)
{
errno = EINVAL;
return -1;
}
*value = __u->itimers[which];
return 0;
}