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// SPDX-License-Identifier: GPL-2.0
#include <src/combined_source.c>
int x;
int y;
int __unbuffered_tpr_x;
int __unbuffered_tpr_y;
DEFINE_SRCU(ss);
void rcu_reader(void)
{
int idx;
#ifndef FORCE_FAILURE_3
idx = srcu_read_lock(&ss);
#endif
might_sleep();
__unbuffered_tpr_y = READ_ONCE(y);
#ifdef FORCE_FAILURE
srcu_read_unlock(&ss, idx);
idx = srcu_read_lock(&ss);
#endif
WRITE_ONCE(x, 1);
#ifndef FORCE_FAILURE_3
srcu_read_unlock(&ss, idx);
#endif
might_sleep();
}
void *thread_update(void *arg)
{
WRITE_ONCE(y, 1);
#ifndef FORCE_FAILURE_2
synchronize_srcu(&ss);
#endif
might_sleep();
__unbuffered_tpr_x = READ_ONCE(x);
return NULL;
}
void *thread_process_reader(void *arg)
{
rcu_reader();
return NULL;
}
int main(int argc, char *argv[])
{
pthread_t tu;
pthread_t tpr;
if (pthread_create(&tu, NULL, thread_update, NULL))
abort();
if (pthread_create(&tpr, NULL, thread_process_reader, NULL))
abort();
if (pthread_join(tu, NULL))
abort();
if (pthread_join(tpr, NULL))
abort();
assert(__unbuffered_tpr_y != 0 || __unbuffered_tpr_x != 0);
#ifdef ASSERT_END
assert(0);
#endif
return 0;
}
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