Need help with deleting childīs parent and child subprocess
1. The problem statement, all variables and given/known data:
I need to make an program that in a loop creates one parent and five children with fork(). The problem i'm trying to solve is how to delete the parent and child of the childīs process.
2. Relevant commands, code, scripts, algorithms:
fork() and wait(), waitpid(). Iīm using Mac OS X 10.6.8.
3. The attempts at a solution (include all code and scripts):
4. Högskolan på Gotland (Gotland University), Visby (Gotland), Sweden, Magnus Wessberg, and TPV714 (i was unable to post the url because iīve not posted five times)
Last edited by WhiteFace; 08-22-2011 at 12:20 PM..
I don't follow what these are...
this is what my text says...
"When a process is started, a duplicate of that process is created. This new process is called the child and the process that created it is called the parent. The child process then replaces the copy for the code the parent... (1 Reply)
:(
Since I'm fairly new to the scene and don't have much experience in shell programming, I decided to check out the net for a useful script or two.
What I'm looking for is a script that would let me enter a PID and then show the process tree associated with it.
So it would display the (grand-)... (2 Replies)
Hello all,
I have gone through the search and looked at posting about idle users and killing processes. Here is my question I would like to kill an idle user ( which I can do) but how can I asure that all of his process is also killed whit out tracing his inital start PID. I have tried this on a... (4 Replies)
Hello.
I have a global function name func1() that I am sourcing in from script A. I call the function from script B. Is there a way to find out which script called func1() dynamically so that the func1() can report it in the event there are errors?
Thanks (2 Replies)
Greets all. This is using bash/sh on Slackware Linux 12....
I have a parent and MANY children scripts. The parent would be:
for script in scripts/*.sh; do
sh $script || exit 1
done
I'm trying to get a child script to quit running without bombing my parent script. This would be the... (5 Replies)
Hi all,
I am writing a script which calls other third party scripts that perform numerous actions. I have no control over these scripts.
My problem is, one of these scripts seems to execute and do what it is meant to do, but my calling / parent script always exits at that point. I need to... (4 Replies)
i used function fork().
so i made two process.
parent process accepted socket fd and writing to shared memory.
then now. how can child process share parent's socket fd?
is this possible?
Thanks in advance (1 Reply)
Hello. I want to make a child do some stuff,wait,then the parent does some stuff and then child does some stuff and waits again.I have made the following but it does not work.Can anybody help me?
pid1 = fork();
if (pid1 == -1)
{
perror("Can't create child\n");
... (18 Replies)
Hi everyone
i am very new to linux , working on bash shell.
I am trying to solve the given problem
1. Create a process and then create children using fork
2. Check the Status of the application for successful running.
3. Kill all the process(threads) except parent and first child... (2 Replies)
does anyone know how to check in an 'if' statement if a particular directory is a child directory of a particular directory?
help ~ (2 Replies)
Discussion started by: ymc1g11
2 Replies
LEARN ABOUT ULTRIX
xtmanagechildren
XtManageChildren(3Xt) MIT X11R4 XtManageChildren(3Xt)Name
XtManageChildren, XtManageChild, XtUnmanageChildren, XtUnmanageChild - manage and unmanage children
Syntax
typedef Widget *WidgetList;
void XtManageChildren(children, num_children)
WidgetList children;
Cardinal num_children;
void XtManageChild(child)
Widget child;
void XtUnmanageChildren(children, num_children)
WidgetList children;
Cardinal num_children;
void XtUnmanageChild(child)
Widget child;
Arguments
child Specifies the child.
children Specifies a list of child widgets.
num_children
Specifies the number of children.
Description
The function performs the following:
o Issues an error if the children do not all have the same parent or if the parent is not a subclass of
o Returns immediately if the common parent is being destroyed; otherwise, for each unique child on the list, ignores the child if it
already is managed or is being destroyed and marks it if not.
o If the parent is realized and after all children have been marked, it makes some of the newly managed children viewable:
- Calls the change_managed routine of the widgets' parent.
- Calls on each previously unmanaged child that is unrealized.
- Maps each previously unmanaged child that has map_when_managed
Managing children is independent of the ordering of children and independent of creating and deleting children. The layout routine of the
parent should consider children whose managed field is and should ignore all other children. Note that some composite widgets, especially
fixed boxes, call from their insert_child procedure.
If the parent widget is realized, its change_managed procedure is called to notify it that its set of managed children has changed. The
parent can reposition and resize any of its children. It moves each child as needed by calling which first updates the x and y fields and
then calls if the widget is realized.
The function constructs a of length one and calls
The function performs the following:
o Issues an error if the children do not all have the same parent or if the parent is not a subclass of
o Returns immediately if the common parent is being destroyed; otherwise, for each unique child on the list, performs the following:
- Ignores the child if it already is unmanaged or is being destroyed and marks it if not.
- If the child is realized, it makes it nonvisible by unmapping it.
o Calls the change_managed routine of the widgets' parent after all children have been marked if the parent is realized.
does not destroy the children widgets. Removing widgets from a parent's managed set is often a temporary banishment, and, some time later,
you may manage the children again.
The function constructs a widget list of length one and calls
See AlsoXtMapWidget(3Xt), XtRealizeWidget(3Xt)
X Window System Toolkit: The Complete Programmer's Guide and Specification, Paul J. Asente and Ralph Swick
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys
XtManageChildren(3Xt)