Add debug messages to terminate_gracefully()

src/async.c

@@ -286,8 +286,8 @@ void async_thread(void) {
             if (async_exec(evt, async_e2a(events[i].events)) == 0) {
                 logger_set_prefix("");
                 if (epoll_ctl(epoll_fd, EPOLL_CTL_DEL, evt->fd, NULL) == -1) {
-                    if (errno == EBADF) {
-                        // already closed fd, do not die
+                    if (errno == EBADF || errno == ENOENT) {
+                        // already closed fd or not found, do not die
                         errno = 0;
                     } else {
                         critical("Unable to remove file descriptor from epoll instance");
@@ -316,8 +316,8 @@ void async_thread(void) {
                 evt->to_cb(evt->arg);
 
                 if (epoll_ctl(epoll_fd, EPOLL_CTL_DEL, evt->fd, NULL) == -1) {
-                    if (errno == EBADF) {
-                        // already closed fd, do not die
+                    if (errno == EBADF || errno == ENOENT) {
+                        // already closed fd or not found, do not die
                         errno = 0;
                     } else {
                         critical("Unable to remove file descriptor from epoll instance");

src/server.c

@@ -190,21 +190,27 @@ static void terminate_gracefully(int sig) {
     sigaction(SIGINT, &act, NULL);
     sigaction(SIGTERM, &act, NULL);
 
+    debug("Closing listening sockets...");
     for (int i = 0; i < NUM_SOCKETS; i++) {
         close(sockets[i]);
     }
 
+    debug("Stopping workers...");
     cache_stop();
     workers_stop();
+    debug("Destroying workers...");
     workers_destroy();
 
     logger_set_prefix("");
+    debug("Closing proxy connections...");
     proxy_close_all();
 
+    debug("Closing client connections...");
     while (list_size(clients) > 0)
         tcp_close(clients[0]);
     logger_set_prefix("");
 
+    debug("Stopping async loop...");
     async_stop();
 }