89 lines
2.1 KiB
Bash
Executable File
89 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# Test scenario from
|
|
# Bug 192918 - [patch] A thread will spin if a signal interrupts umtxq_sleep_pi.
|
|
# by eric@vangyzen.net
|
|
|
|
. ../default.cfg
|
|
|
|
here=`pwd`
|
|
cd /tmp
|
|
sed '1,/^EOF/d' < $here/$0 > umtx_suspend.c
|
|
mycc -o umtx_suspend -Wall -Wextra -O0 -g umtx_suspend.c \
|
|
-lpthread || exit 1
|
|
rm -f umtx_suspend.c
|
|
|
|
/tmp/umtx_suspend
|
|
|
|
rm -f /tmp/umtx_suspend
|
|
exit 0
|
|
EOF
|
|
// cc -lpthread -o umtx_suspend umtx_suspend.c
|
|
//
|
|
// failure: a thread spins around "umtxpi" the kernel, ignoring signals
|
|
// success: the process exits
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
#include <err.h>
|
|
#include <pthread.h>
|
|
#include <pthread_np.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
pthread_mutex_t the_mutex;
|
|
|
|
void *
|
|
spinning_thread_func(void *arg __unused)
|
|
{
|
|
int error;
|
|
|
|
error = pthread_mutex_lock(&the_mutex);
|
|
if (error)
|
|
errc(1, error, "%s: pthread_mutex_lock", __func__);
|
|
|
|
return (NULL);
|
|
}
|
|
|
|
int
|
|
main(int argc __unused, char *argv[] __unused)
|
|
{
|
|
int error;
|
|
pthread_t spinning_thread;
|
|
pthread_mutexattr_t the_mutex_attr;
|
|
|
|
error = pthread_mutexattr_init(&the_mutex_attr);
|
|
if (error)
|
|
errc(1, error, "pthread_mutexattr_init");
|
|
|
|
error = pthread_mutexattr_setprotocol(&the_mutex_attr, PTHREAD_PRIO_INHERIT);
|
|
if (error)
|
|
errc(1, error, "pthread_mutexattr_setprotocol");
|
|
|
|
error = pthread_mutex_init(&the_mutex, &the_mutex_attr);
|
|
if (error)
|
|
errc(1, error, "pthread_mutex_init");
|
|
|
|
error = pthread_mutex_lock(&the_mutex);
|
|
if (error)
|
|
errc(1, error, "pthread_mutex_lock");
|
|
|
|
error = pthread_create(&spinning_thread, NULL, spinning_thread_func, NULL);
|
|
if (error)
|
|
errc(1, error, "pthread_create");
|
|
|
|
// Wait for the spinning_thread to call pthread_mutex_lock(3)
|
|
// and enter the kernel.
|
|
(void) sleep(1);
|
|
|
|
error = pthread_suspend_np(spinning_thread);
|
|
if (error)
|
|
errc(1, error, "pthread_suspend_np");
|
|
|
|
// The spinning_thread should be spinning in the kernel.
|
|
// This thread should be blocked in pthread_suspend_np(3).
|
|
fputs("This test failed to reproduce the bug.\n", stderr);
|
|
|
|
return (0);
|
|
}
|