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