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4a94e36819
This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2015-2022 Free Software Foundation, Inc.
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This program 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; either version 3 of the License, or
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(at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <signal.h>
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int save_parent;
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/* Variable set by GDB. If true, then a fork child (or parent) exits
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if its parent (or child) exits. Otherwise the process waits
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forever until either GDB or the alarm kills it. */
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volatile int exit_if_relative_exits = 0;
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/* The fork child. Just runs forever. */
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static int
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fork_child (void)
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{
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/* Don't run forever. */
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alarm (180);
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while (1)
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{
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if (exit_if_relative_exits)
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{
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sleep (1);
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/* Exit if GDB kills the parent. */
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if (getppid () != save_parent)
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break;
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if (kill (getppid (), 0) != 0)
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break;
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}
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else
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pause ();
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}
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return 0;
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}
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/* The fork parent. Just runs forever. */
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static int
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fork_parent (void)
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{
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/* Don't run forever. */
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alarm (180);
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while (1)
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{
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if (exit_if_relative_exits)
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{
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int res = wait (NULL);
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if (res == -1 && errno == EINTR)
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continue;
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else if (res == -1)
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{
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perror ("wait");
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return 1;
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}
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else
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return 0;
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}
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else
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pause ();
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}
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return 0;
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}
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int
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main (void)
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{
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pid_t pid;
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save_parent = getpid ();
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/* The parent and child should basically run forever without
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tripping on any debug event. We want to check that GDB updates
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the parent and child running states correctly right after the
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fork. */
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pid = fork ();
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if (pid > 0)
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return fork_parent ();
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else if (pid == 0)
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return fork_child ();
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else
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{
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perror ("fork");
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return 1;
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}
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}
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