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coroutine: Fix setup of sigaltstack coroutines

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Use pthread_kill instead of process-wide kill to invoke the signal
handler used for stack switching. This may fix spurious lock-ups with
this backend, easily triggerable by extending the time window between
kill and sigsuspend.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jan Kiszka 2012-05-09 14:23:27 -03:00 committed by Kevin Wolf
parent 77f4c9a68a
commit 99b5beba2f
1 changed files with 1 additions and 1 deletions
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2
coroutine-sigaltstack.c
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@ -226,7 +226,7 @@ static Coroutine *coroutine_new(void)
* called.
*/
coTS->tr_called = 0;
kill(getpid(), SIGUSR2);
pthread_kill(pthread_self(), SIGUSR2);
sigfillset(&sigs);
sigdelset(&sigs, SIGUSR2);
while (!coTS->tr_called) {