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isparent.c
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C/C++ Source or Header
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1992-09-07
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1KB
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55 lines
#include <arpbase.h>
#include <arp_proto.h>
#include "Launch.h"
#include "LaunchPriv.h"
/*
* NAME
* IsParent -- verifies if the process is a parent to another one.
*
* SYNOPSIS
* pp = IsParent (Proc)
*
* struct ProcPair *IsParent (struct Process *);
*
* FUNCTION
* Check if the process has started a child process and if the
* child is still active.
*
* DESCRIPTION
* Scan the process pair linked list for a pair which is has the
* input process as the parent. If it find one, return a pointer
* to it.
*
* INPUT
* Proc - a pointer to the process to be checked.
*
* OUTPUT
* pp - a ProcPair structure pointer.
*
* NOTE
* Assume Forbid() has been called to make sure the list is not
* modified while we scan it.
*
* HISTORY
* 1992/09/06 Pierre Baillargeon Creation
*
* SEE ALSO
* IsChild()
*/
struct ProcPair *IsParent (struct Process *Proc)
{
struct ProcPair *pp;
if (NULL != ProcPairList)
{
for (pp = (struct ProcPair *)ProcPairList->lh_Head; pp->pp_Node.ln_Succ; pp = (struct ProcPair *)pp->pp_Node.ln_Succ)
{
if (Proc == pp->pp_Parent)
return pp;
}
}
return NULL;
}