67 lines
1.5 KiB
C
67 lines
1.5 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) 2016 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 <libc.h>
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int spin;
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int ok[2];
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void
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main(void)
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{
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char **test;
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test = (char **)privalloc();
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*test = smprint("Hello from %d (at %p)\n", getpid(), test);
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rfork(RFNOTEG);
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switch(rfork(RFPROC|RFMEM)){
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case -1:
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exits("rfork");
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case 0:
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*test = smprint("Hello from %d (at %p)\n", getpid(), test);
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spin = 1;
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while(spin)
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;
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print("on %d: %s", getpid(), *test);
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exits(nil);
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break;
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default:
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while(spin == 0)
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;
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}
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switch(rfork(RFPROC|RFMEM)){
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case -1:
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exits("rfork");
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case 0:
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*test = smprint("Hello from %d (at %p)\n", getpid(), test);
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spin = 2;
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while(spin)
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;
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print("on %d: %s", getpid(), *test);
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exits(nil);
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break;
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default:
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while(spin == 1)
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;
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}
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spin = 0;
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sleep(500);
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print("on %d: %s", getpid(), *test);
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exits("PASS");
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}
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