91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*/
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#include <sys/types.h>
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#include <time.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <evl/thread.h>
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#include <evl/sem.h>
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#include <evl/clock.h>
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#include <evl/poll.h>
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#include "helpers.h"
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#define NR_RECEIVERS 1
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#define LOW_PRIO 1
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#define HIGH_PRIO 2
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#define PUT_COUNT 1024
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static int pollfd_in, sfd;
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static struct evl_sem sem;
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struct test_context {
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int serial;
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};
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static void *sem_poller(void *arg)
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{
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struct evl_poll_event pollset;
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struct test_context *p = arg;
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int ret, tfd, n;
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__Tcall_assert(tfd, evl_attach_self("monitor-sem-poller:%d.%d",
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getpid(), p->serial));
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for (n = 0; n < PUT_COUNT; n++) {
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__Tcall_assert(ret, evl_poll(pollfd_in, &pollset, 1));
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__Texpr_assert(ret == 1);
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__Texpr_assert(pollset.events == POLLIN);
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__Texpr_assert(pollset.fd == sfd);
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__Tcall_assert(ret, evl_tryget_sem(&sem));
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}
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return NULL;
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}
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int main(int argc, char *argv[])
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{
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struct test_context c[NR_RECEIVERS];
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pthread_t pollers[NR_RECEIVERS];
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struct sched_param param;
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void *status = NULL;
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int tfd, ret, n;
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char *name;
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param.sched_priority = HIGH_PRIO;
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__Texpr_assert(pthread_setschedparam(pthread_self(),
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SCHED_FIFO, ¶m) == 0);
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/* EVL inherits the inband scheduling params upon attachment. */
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__Tcall_assert(tfd, evl_attach_self("poll-sem:%d", getpid()));
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name = get_unique_name(EVL_MONITOR_DEV, 0);
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__Tcall_assert(sfd, evl_new_sem(&sem, name));
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__Tcall_assert(pollfd_in, evl_new_poll());
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__Tcall_assert(ret, evl_add_pollfd(pollfd_in, sfd, POLLIN));
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for (n = 0; n < NR_RECEIVERS; n++) {
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c[n].serial = n;
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new_thread(pollers + n, SCHED_FIFO, LOW_PRIO, sem_poller, c + n);
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}
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for (n = 0; n < PUT_COUNT; n++)
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__Tcall_assert(ret, evl_put_sem(&sem));
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for (n = 0; n < NR_RECEIVERS; n++) {
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__Texpr_assert(pthread_join(pollers[n], &status) == 0);
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__Texpr_assert(status == NULL);
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}
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__Tcall_assert(ret, evl_close_sem(&sem));
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return 0;
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}
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