static void
libev_ctx_del(void *ctx, const verto_ev *ev, void *evpriv)
{
switch (verto_get_type(ev)) {
case VERTO_EV_TYPE_IO:
ev_io_stop(ctx, evpriv);
break;
case VERTO_EV_TYPE_TIMEOUT:
ev_timer_stop(ctx, evpriv);
break;
case VERTO_EV_TYPE_IDLE:
ev_idle_stop(ctx, evpriv);
break;
case VERTO_EV_TYPE_SIGNAL:
ev_signal_stop(ctx, evpriv);
break;
case VERTO_EV_TYPE_CHILD:
ev_child_stop(ctx, evpriv);
break;
default:
break;
}
free(evpriv);
}
static void mon_child_cb(struct ev_loop* loop, ev_child* w, int revents V_UNUSED) {
dmn_assert(loop); dmn_assert(w); dmn_assert(revents == EV_CHILD);
ev_child_stop(loop, w); // always single-shot
mon_t* this_mon = w->data;
ev_timer_stop(loop, this_mon->cmd_timeout);
this_mon->cmd_pid = 0;
bool failed = true;
int status = w->rstatus;
if(WIFEXITED(status)) {
if(!WEXITSTATUS(status))
failed = false;
}
else {
if(WIFSIGNALED(status))
dmn_log_warn("Monitor child process for '%s' terminated by signal %u", this_mon->cmd->desc, WTERMSIG(status));
else
dmn_log_warn("Monitor child process for '%s' terminated abnormally...", this_mon->cmd->desc);
}
// If timeout already sent a failure, don't double-send
// here when we reap the SIGKILL'd child
if(this_mon->result_pending) {
if(!killed_by) {
sendq_enq(emc_encode_mon(this_mon->cmd->idx, failed));
ev_io_start(loop, plugin_write_watcher);
}
if (num_proc > 0) {
num_proc--;
}
this_mon->result_pending = false;
}
}
// Report that a child has exited
void child_cb(EV_P_ ev_child *w, int revents)
{
char str[100];
char format[] =
"{\"processTerminated\" : "
" {\"pid\" : %d, \"returnCode\" : %d, \"bySignal\" : %d, \"endTime\" : %ld }}";
struct timeval tp;
gettimeofday(&tp, NULL);
long int time = (long int) tp.tv_sec * 1000 + tp.tv_usec;
sprintf(str, format, w->rpid, WEXITSTATUS(w->rstatus), WSTOPSIG(w->rstatus), time);
socket_t *s = w->data;
ev_child_stop (EV_A_ w);
frame_t *frame = malloc(sizeof(frame_t));
frame->fin = 1;
frame->opcode = WS_OP_BIN;
frame->len = strlen(str);
frame->payload = str;
int fr_len;
char *fr_str = write_frame(frame, &fr_len);
socket_write(s, fr_str, fr_len);
free(frame);
free(fr_str);
ilist_remove(processes, w->rpid);
}
static void child_cb(EV_P_ ev_child *w, int revents) {
ev_child_stop(EV_A_ w);
if (WIFEXITED(w->rstatus)) {
exit(WEXITSTATUS(w->rstatus));
} else {
exit(WTERMSIG(w->rstatus) + 128);
}
}
/**
* Stops the child so it won't be called by the specified event loop.
*
* Usage:
* child:stop(loop)
*
* [+0, -0, e]
*/
static int child_stop(lua_State *L) {
ev_child* child = check_child(L, 1);
struct ev_loop* loop = *check_loop_and_init(L, 2);
loop_stop_watcher(L, loop, GET_WATCHER_DATA(child), 1);
ev_child_stop(loop, child);
return 0;
}
static int
signal_child_unwatch(lua_State *T)
{
if (signal_child_active()) {
ev_ref(LEM);
ev_child_stop(LEM_ &signal_child_watcher);
}
lua_pushboolean(T, 1);
return 1;
}
/*
* Handler which will be called when we get a SIGCHLD for the nagbar, meaning
* it exited (or could not be started, depending on the exit code).
*
*/
static void nagbar_exited(EV_P_ ev_child *watcher, int revents) {
ev_child_stop(EV_A_ watcher);
if (!WIFEXITED(watcher->rstatus)) {
ELOG("ERROR: i3-nagbar did not exit normally.\n");
return;
}
int exitcode = WEXITSTATUS(watcher->rstatus);
DLOG("i3-nagbar process exited with status %d\n", exitcode);
if (exitcode == 2) {
ELOG("ERROR: i3-nagbar could not be found. Is it correctly installed on your system?\n");
}
*((pid_t *)watcher->data) = -1;
}
static void event_child_cb(struct ev_loop *loop, ev_child *w, int revents) {
liEventChild *child = LI_CONTAINER_OF(w, liEventChild, libevmess.child);
liEventLoop *my_loop = child->base.link_watchers.data;
UNUSED(revents);
LI_FORCE_ASSERT(NULL != my_loop);
LI_FORCE_ASSERT(loop == my_loop->loop);
if (ev_is_active(w)) {
if (!child->base.keep_loop_alive) ev_ref(loop);
ev_child_stop(loop, w);
}
child->base.active = 0;
child->base.callback(&child->base, LI_EV_WAKEUP);
}
static void
worker_exited_cb(EV_P_ ev_child *w, int revents)
{
struct worker *worker = CONTAINER_OF(w, struct worker, child_watcher);
LOGF(3, "=== %d: worker ended, status=%d\n", worker_pid(worker),
w->rstatus);
ev_child_stop(EV_A_ w);
worker->f_alive = false;
if (worker->session == NULL) {
printf("WARNING: worker without session!\n");
return;
}
session_on_worker_exited_cb(EV_A_ worker->session, w->rstatus);
}
static void child_died(struct ev_loop *loop, ev_child *w, int revents) {
child *c = (child*) w->data;
UNUSED(revents);
ev_child_stop(loop, w);
c->d->running--;
c->pid = -1;
if (c->d->shutdown) return;
if (ev_now(c->d->loop) - c->last_spawn > (opts.retry_timeout_ms / (ev_tstamp) 1000)) {
g_printerr("Child[%i] died, respawn\n", c->id);
c->tries = 0;
} else {
g_printerr("Spawning child[%i] failed, next try\n", c->id);
}
spawn(c);
}
void child_proc_cb(EV_P_ ev_child *watcher, int revents) {
ev_child_stop(EV_A_ watcher);
process_t *process = watcher->data;
struct proc_data *procdata = process->data;
pn_proc_exited(process, watcher->rstatus);
printf("process %s[%d] - ", pn_proc_program(process)->name,
pn_proc_pid(process));
pn_proc_print(stdout, process, 0, 0);
//publish_proc_event(process, "exited");
if (procdata->running_state_timer != NULL) {
ev_timer_stop(EV_A_ (ev_timer *)procdata->running_state_timer);
free(procdata->running_state_timer);
//running_state_timer_cb(EV_A_ procdata->running_state_timer, 0);
}
restart_child(process, 2.0);
/* We allocate a new watcher for each pid, so this one is done. */
free(watcher);
} /* child_proc_cb */
static void uv__chld(EV_P_ ev_child* watcher, int revents) {
int status = watcher->rstatus;
int exit_status = 0;
int term_signal = 0;
uv_process_t *process = watcher->data;
assert(&process->child_watcher == watcher);
assert(revents & EV_CHILD);
ev_child_stop(EV_A_ &process->child_watcher);
if (WIFEXITED(status)) {
exit_status = WEXITSTATUS(status);
}
if (WIFSIGNALED(status)) {
term_signal = WTERMSIG(status);
}
if (process->exit_cb) {
process->exit_cb((uv_handle_t *)process, exit_status, term_signal);
}
}
void
worker_stop(EV_P_ struct worker *worker)
{
LOGF(3, "=== %d: worker stopped\n", worker_pid(worker));
if (worker->f_alive) {
LOGF(1, "=== %d: worker still alive - sending SIGKILL\n",
worker_pid(worker));
kill(worker_pid(worker), SIGKILL);
}
writeq_uninit(&worker->stdin_writeq);
writeq_uninit(&worker->msgin_writeq);
if (ev_is_active(&worker->child_watcher)) {
ev_child_stop(EV_A_ &worker->child_watcher);
}
if (ev_is_active(&worker->stdin_w)) {
ev_io_stop(EV_A_ &worker->stdin_w);
}
if (ev_is_active(&worker->stdout_w)) {
ev_io_stop(EV_A_ &worker->stdout_w);
}
if (ev_is_active(&worker->stderr_w)) {
ev_io_stop(EV_A_ &worker->stderr_w);
}
if (ev_is_active(&worker->msgin_w)) {
ev_io_stop(EV_A_ &worker->msgin_w);
}
if (ev_is_active(&worker->msgout_w)) {
ev_io_stop(EV_A_ &worker->msgout_w);
}
close(worker->stdin_w.fd);
close(worker->stdout_w.fd);
close(worker->stderr_w.fd);
close(worker->msgin_w.fd);
close(worker->msgout_w.fd);
free(worker);
}
void exit_cb(struct ev_loop* loop, struct ev_child* cwatcher, int status) {
struct worker_s* worker = container_of(cwatcher, struct worker_s, cwatcher);
ev_child_stop(loop, cwatcher);
err("worker[pid:%d] exit with status:%d, stop_moniter:%d", worker->pid, cwatcher->rstatus, worker->listener->stop_moniter);
struct timeval tv;
gettimeofday(&tv, 0);
if (worker->listener->stop_moniter || 2 > ((int)tv.tv_sec - worker->starttime)) {
return;
}
worker->pid = spawn_worker(worker);
if (-1 == worker->pid) {
err("spawn worker failed, worker_id:%d", worker->worker_id);
exit(EXIT_FAILURE);
}
err("worker %d restart, new pid: %d", worker->worker_id, worker->pid);
ev_child_set(cwatcher, worker->pid, 0);
ev_child_start(loop, cwatcher);
}
static void
child_cb (EV_P_ ev_child *w, int revents)
{
ev_child_stop (EV_A_ w);
printf ("Process %d changed status to %x\n", w->rpid, w->rstatus);
}
static void child_cb (EV_P_ ev_child *w, int revents)
{
ev_child_stop (EV_A_ w);
printf ("process %d exited with status %x\n", w->rpid, w->rstatus);
}
static void child_stop (void *impl, flux_watcher_t *w)
{
assert (w->signature == CHILD_SIG);
ev_child_stop (w->r->loop, (ev_child *)impl);
}
void uv__process_close(uv_process_t* handle) {
ev_child_stop(handle->loop->ev, &handle->child_watcher);
}
void uv_close(uv_handle_t* handle, uv_close_cb close_cb) {
uv_async_t* async;
uv_stream_t* stream;
uv_process_t* process;
handle->close_cb = close_cb;
switch (handle->type) {
case UV_NAMED_PIPE:
uv_pipe_cleanup((uv_pipe_t*)handle);
/* Fall through. */
case UV_TTY:
case UV_TCP:
stream = (uv_stream_t*)handle;
uv_read_stop(stream);
ev_io_stop(stream->loop->ev, &stream->write_watcher);
uv__close(stream->fd);
stream->fd = -1;
if (stream->accepted_fd >= 0) {
uv__close(stream->accepted_fd);
stream->accepted_fd = -1;
}
assert(!ev_is_active(&stream->read_watcher));
assert(!ev_is_active(&stream->write_watcher));
break;
case UV_UDP:
uv__udp_start_close((uv_udp_t*)handle);
break;
case UV_PREPARE:
uv_prepare_stop((uv_prepare_t*) handle);
break;
case UV_CHECK:
uv_check_stop((uv_check_t*) handle);
break;
case UV_IDLE:
uv_idle_stop((uv_idle_t*) handle);
break;
case UV_ASYNC:
async = (uv_async_t*)handle;
ev_async_stop(async->loop->ev, &async->async_watcher);
ev_ref(async->loop->ev);
break;
case UV_TIMER:
uv_timer_stop((uv_timer_t*)handle);
break;
case UV_PROCESS:
process = (uv_process_t*)handle;
ev_child_stop(process->loop->ev, &process->child_watcher);
break;
case UV_FS_EVENT:
uv__fs_event_destroy((uv_fs_event_t*)handle);
break;
default:
assert(0);
}
handle->flags |= UV_CLOSING;
/* This is used to call the on_close callback in the next loop. */
ev_idle_start(handle->loop->ev, &handle->next_watcher);
ev_feed_event(handle->loop->ev, &handle->next_watcher, EV_IDLE);
assert(ev_is_pending(&handle->next_watcher));
}
void feng_stop_child_watcher(struct feng *srv)
{
ev_child_stop (srv->loop, &cw);
}
