73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/*
|
|
* This file is part of Jehanne.
|
|
*
|
|
* Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
|
|
*
|
|
* Jehanne is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, version 2 of the License.
|
|
*
|
|
* Jehanne is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <u.h>
|
|
#include <lib9.h>
|
|
|
|
int
|
|
ignore_note(void *v, char *s)
|
|
{
|
|
print("%d: note received: %s\n", getpid(), s);
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
main(void)
|
|
{
|
|
Waitmsg *w;
|
|
int i = 0, cpid;
|
|
|
|
if (!atnotify(ignore_note, 1)){
|
|
fprint(2, "%r\n");
|
|
exits("atnotify fails");
|
|
}
|
|
switch(cpid = fork()){
|
|
case -1:
|
|
print("FAIL: fork\n");
|
|
exits("FAIL");
|
|
case 0:
|
|
print("%d: child: waiting 3 sec\n", getpid());
|
|
sleep(3000);
|
|
print("%d: child: sending note to parent\n", getpid());
|
|
postnote(PNPROC, getppid(), "test");
|
|
exits(0);
|
|
default:
|
|
break;
|
|
}
|
|
print("%d: start waiting for child to complete\n", getpid());
|
|
InterruptedByNote:
|
|
w = wait();
|
|
if(w == nil){
|
|
if(i==0){
|
|
++i;
|
|
print("%d: wait interrupted by note, try again once\n", getpid());
|
|
goto InterruptedByNote;
|
|
}
|
|
print("FAIL: no wait msg\n");
|
|
exits("FAIL");
|
|
}
|
|
|
|
if(cpid != w->pid){
|
|
print("FAIL: wrong Waitmsg: pid = %d instead of expected %d\n", w->pid, cpid);
|
|
exits("FAIL");
|
|
}
|
|
print("Got Waitmsg for child %d\n", w->pid);
|
|
|
|
print("PASS\n");
|
|
exits("PASS");
|
|
}
|