#include "sd-event.h"

#include "log.h"

#include "util.h"

#include "macro.h"

#include "signal-util.h"

static int prepare_handler(sd_event_source *s, void *userdata) {

log_info("preparing %c", PTR_TO_INT(userdata));

return 1;

}

static bool got_a, got_b, got_c, got_unref;

static unsigned got_d;

static int unref_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

sd_event_source_unref(s);

got_unref = true;

return 0;

}

static int io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

log_info("got IO on %c", PTR_TO_INT(userdata));

if (userdata == INT_TO_PTR('a')) {

assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);

assert_se(!got_a);

got_a = true;

} else if (userdata == INT_TO_PTR('b')) {

assert_se(!got_b);

got_b = true;

} else if (userdata == INT_TO_PTR('d')) {

got_d++;

if (got_d < 2)

assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0);

else

assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0);

} else

assert_not_reached("Yuck!");

return 1;

}

static int child_handler(sd_event_source *s, const siginfo_t *si, void *userdata) {

assert_se(s);

assert_se(si);

log_info("got child on %c", PTR_TO_INT(userdata));

assert_se(userdata == INT_TO_PTR('f'));

assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0);

sd_event_source_unref(s);

return 1;

}

static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

sd_event_source *p = NULL;

pid_t pid;

assert_se(s);

assert_se(si);

log_info("got signal on %c", PTR_TO_INT(userdata));

assert_se(userdata == INT_TO_PTR('e'));

assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0);

pid = fork();

assert_se(pid >= 0);

if (pid == 0)

_exit(0);

assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0);

assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);

sd_event_source_unref(s);

return 1;

}

static int defer_handler(sd_event_source *s, void *userdata) {

sd_event_source *p = NULL;

assert_se(s);

log_info("got defer on %c", PTR_TO_INT(userdata));

assert_se(userdata == INT_TO_PTR('d'));

assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0);

assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0);

assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);

raise(SIGUSR1);

sd_event_source_unref(s);

return 1;

}

static bool do_quit = false;

static int time_handler(sd_event_source *s, uint64_t usec, void *userdata) {

log_info("got timer on %c", PTR_TO_INT(userdata));

if (userdata == INT_TO_PTR('c')) {

if (do_quit) {

sd_event_source *p;

assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0);

assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);

} else {

assert_se(!got_c);

got_c = true;

}

} else

assert_not_reached("Huh?");

return 2;

}

static bool got_exit = false;

static int exit_handler(sd_event_source *s, void *userdata) {

log_info("got quit handler on %c", PTR_TO_INT(userdata));

got_exit = true;

return 3;

}

static void test_basic(void) {

sd_event *e = NULL;

sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL;

static const char ch = 'x';

int a[2] = { -1, -1 }, b[2] = { -1, -1}, d[2] = { -1, -1}, k[2] = { -1, -1 };

assert_se(pipe(a) >= 0);

assert_se(pipe(b) >= 0);

assert_se(pipe(d) >= 0);

assert_se(pipe(k) >= 0);

assert_se(sd_event_default(&e) >= 0);

assert_se(sd_event_set_watchdog(e, true) >= 0);

/* Test whether we cleanly can destroy an io event source from its own handler */

got_unref = false;

assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0);

assert_se(write(k[1], &ch, 1) == 1);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(got_unref);

got_a = false, got_b = false, got_c = false, got_d = 0;

/* Add a oneshot handler, trigger it, re-enable it, and trigger

assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0);

assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0);

assert_se(write(d[1], &ch, 1) >= 0);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(got_d == 1);

assert_se(write(d[1], &ch, 1) >= 0);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(got_d == 2);

assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0);

assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0);

assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0);

assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0);

assert_se(sd_event_source_set_priority(x, 99) >= 0);

assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0);

assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0);

assert_se(sd_event_source_set_priority(z, 50) >= 0);

assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);

assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0);

/* Test for floating event sources */

assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0);

assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0);

assert_se(write(a[1], &ch, 1) >= 0);

assert_se(write(b[1], &ch, 1) >= 0);

assert_se(!got_a && !got_b && !got_c);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(!got_a && got_b && !got_c);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(!got_a && got_b && got_c);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(got_a && got_b && got_c);

sd_event_source_unref(x);

sd_event_source_unref(y);

do_quit = true;

assert_se(sd_event_source_set_time(z, now(CLOCK_MONOTONIC) + 200 * USEC_PER_MSEC) >= 0);

assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0);

assert_se(sd_event_loop(e) >= 0);

sd_event_source_unref(z);

sd_event_source_unref(q);

sd_event_source_unref(w);

sd_event_unref(e);

safe_close_pair(a);

safe_close_pair(b);

safe_close_pair(d);

safe_close_pair(k);

}

static int last_rtqueue_sigval = 0;

static int n_rtqueue = 0;

static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

last_rtqueue_sigval = si->ssi_int;

n_rtqueue ++;

return 0;

}

static void test_rtqueue(void) {

sd_event_source *u = NULL, *v = NULL, *s = NULL;

sd_event *e = NULL;

assert_se(sd_event_default(&e) >= 0);

assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0);

assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0);

assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0);

assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0);

assert_se(sd_event_source_set_priority(v, -10) >= 0);

assert(sigqueue(getpid(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0);

assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0);

assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0);

assert(sigqueue(getpid(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0);

assert(sigqueue(getpid(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0);

assert_se(n_rtqueue == 0);

assert_se(last_rtqueue_sigval == 0);

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(n_rtqueue == 1);

assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(n_rtqueue == 2);

assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(n_rtqueue == 3);

assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */

assert_se(sd_event_run(e, (uint64_t) -1) >= 1);

assert_se(n_rtqueue == 4);

assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */

assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */

assert_se(n_rtqueue == 4);

assert_se(last_rtqueue_sigval == 1);

sd_event_source_unref(u);

sd_event_source_unref(v);

sd_event_source_unref(s);

sd_event_unref(e);

}

int main(int argc, char *argv[]) {

test_basic();

test_rtqueue();

return 0;

}