+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2013 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include "sd-event.h"
-#include "log.h"
-#include "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(s);
- assert(si);
-
- log_info("got child on %c", PTR_TO_INT(userdata));
-
- assert(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;
- sigset_t ss;
- pid_t pid;
-
- assert(s);
- assert(si);
-
- log_info("got signal on %c", PTR_TO_INT(userdata));
-
- assert(userdata == INT_TO_PTR('e'));
-
- assert_se(sigemptyset(&ss) >= 0);
- assert_se(sigaddset(&ss, SIGCHLD) >= 0);
- assert_se(sigprocmask(SIG_BLOCK, &ss, NULL) >= 0);
-
- pid = fork();
- assert_se(pid >= 0);
-
- if (pid == 0)
- _exit(0);
-
- assert_se(sd_event_add_child(sd_event_source_get_event(s), pid, WEXITED, child_handler, INT_TO_PTR('f'), &p) >= 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;
- sigset_t ss;
-
- assert(s);
-
- log_info("got defer on %c", PTR_TO_INT(userdata));
-
- assert(userdata == INT_TO_PTR('d'));
-
- assert_se(sigemptyset(&ss) >= 0);
- assert_se(sigaddset(&ss, SIGUSR1) >= 0);
- assert_se(sigprocmask(SIG_BLOCK, &ss, NULL) >= 0);
- assert_se(sd_event_add_signal(sd_event_source_get_event(s), SIGUSR1, signal_handler, INT_TO_PTR('e'), &p) >= 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), defer_handler, INT_TO_PTR('d'), &p) >= 0);
- assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0);
- } else {
- assert(!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;
-}
-
-int main(int argc, char *argv[]) {
- 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, k[0], EPOLLIN, unref_handler, NULL, &t) >= 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, d[0], EPOLLIN, io_handler, INT_TO_PTR('d'), &w) >= 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, a[0], EPOLLIN, io_handler, INT_TO_PTR('a'), &x) >= 0);
- assert_se(sd_event_add_io(e, b[0], EPOLLIN, io_handler, INT_TO_PTR('b'), &y) >= 0);
- assert_se(sd_event_add_monotonic(e, 0, 0, time_handler, INT_TO_PTR('c'), &z) >= 0);
- assert_se(sd_event_add_exit(e, exit_handler, INT_TO_PTR('g'), &q) >= 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);
-
- 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);
-
- close_pipe(a);
- close_pipe(b);
- close_pipe(d);
- close_pipe(k);
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff