static int button_install_check_event_source(Button *b) { int r; assert(b); /* Install a post handler, so that we keep rechecking as long as the lid is closed. */ if (b->check_event_source) return 0; r = sd_event_add_post(b->manager->event, &b->check_event_source, button_recheck, b); if (r < 0) return r; return sd_event_source_set_priority(b->check_event_source, SD_EVENT_PRIORITY_IDLE+1); }
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 }; uint64_t event_now; 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_now(e, CLOCK_MONOTONIC, &event_now) > 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 * it again. */ 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_add_post(e, NULL, post_handler, NULL) >= 0); assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0); assert_se(sd_event_source_set_time(z, event_now + 200 * USEC_PER_MSEC) >= 0); assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); assert_se(sd_event_loop(e) >= 0); assert_se(got_post); assert_se(got_exit); 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); }