mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
933aebfae6
Looking at the AArch64 buildbot, I noticed about two dozen old instances of interrupt-daemon-attach taking up a full 100% cpu each. If the test fails then the test binary relies on an alarm to ensure it dies after 60 seconds. As per the Linux man page for alarm: Alarms created by alarm() ... are not inherited by children created via fork. Update the test to add an alarm in the child and also put a sleep in the child loop so it does not constantly consume cpu. Note I haven't managed to re-create why the test failed. This fix will just stop it hanging and consuming cpu when it does. gdb/testsuite/ChangeLog: * gdb.base/interrupt-daemon-attach.c (main): Add alarm and sleep in child.
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
/* This testcase is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2017-2019 Free Software Foundation, Inc.
|
|
|
|
This program 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; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
/* GDB reads this to figure out the child's PID. */
|
|
pid_t child_pid;
|
|
|
|
void
|
|
marker (void)
|
|
{
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
/* Don't let the test case run forever. */
|
|
alarm (60);
|
|
|
|
child_pid = fork ();
|
|
|
|
switch (child_pid)
|
|
{
|
|
case -1:
|
|
return 1;
|
|
|
|
case 0:
|
|
break;
|
|
|
|
default:
|
|
/* In parent process. */
|
|
while (1)
|
|
{
|
|
marker ();
|
|
usleep (1000);
|
|
}
|
|
}
|
|
|
|
/* In child process. */
|
|
|
|
/* Alarms are not inherited by child processes. Set the alarm again to stop
|
|
the test case running forever. */
|
|
alarm (60);
|
|
|
|
/* Detach from controlling terminal. */
|
|
if (setsid () == (pid_t) -1)
|
|
return 1;
|
|
|
|
while (1)
|
|
usleep (1000);
|
|
|
|
return 0;
|
|
}
|