1 files changed, 120 insertions, 0 deletions
diff --git a/lib/isc/netmgr/timer.c b/lib/isc/netmgr/timer.c
new file mode 100644
index 0000000..8328775
--- /dev/null
+++ b/lib/isc/netmgr/timer.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <uv.h>
+
+#include <isc/netmgr.h>
+#include <isc/util.h>
+
+#include "netmgr-int.h"
+
+struct isc_nm_timer {
+	isc_refcount_t references;
+	uv_timer_t timer;
+	isc_nmhandle_t *handle;
+	isc_nm_timer_cb cb;
+	void *cbarg;
+};
+
+void
+isc_nm_timer_create(isc_nmhandle_t *handle, isc_nm_timer_cb cb, void *cbarg,
+		    isc_nm_timer_t **timerp) {
+	isc__networker_t *worker = NULL;
+	isc_nmsocket_t *sock = NULL;
+	isc_nm_timer_t *timer = NULL;
+	int r;
+
+	REQUIRE(isc__nm_in_netthread());
+	REQUIRE(VALID_NMHANDLE(handle));
+	REQUIRE(VALID_NMSOCK(handle->sock));
+
+	sock = handle->sock;
+	worker = &sock->mgr->workers[isc_nm_tid()];
+
+	/* TODO: per-loop object cache */
+	timer = isc_mem_get(sock->mgr->mctx, sizeof(*timer));
+	*timer = (isc_nm_timer_t){ .cb = cb, .cbarg = cbarg };
+	isc_refcount_init(&timer->references, 1);
+	isc_nmhandle_attach(handle, &timer->handle);
+
+	r = uv_timer_init(&worker->loop, &timer->timer);
+	UV_RUNTIME_CHECK(uv_timer_init, r);
+
+	uv_handle_set_data((uv_handle_t *)&timer->timer, timer);
+
+	*timerp = timer;
+}
+
+void
+isc_nm_timer_attach(isc_nm_timer_t *timer, isc_nm_timer_t **timerp) {
+	REQUIRE(timer != NULL);
+	REQUIRE(timerp != NULL && *timerp == NULL);
+
+	isc_refcount_increment(&timer->references);
+	*timerp = timer;
+}
+
+static void
+timer_destroy(uv_handle_t *uvhandle) {
+	isc_nm_timer_t *timer = uv_handle_get_data(uvhandle);
+	isc_nmhandle_t *handle = timer->handle;
+	isc_mem_t *mctx = timer->handle->sock->mgr->mctx;
+
+	isc_mem_put(mctx, timer, sizeof(*timer));
+
+	isc_nmhandle_detach(&handle);
+}
+
+void
+isc_nm_timer_detach(isc_nm_timer_t **timerp) {
+	isc_nm_timer_t *timer = NULL;
+	isc_nmhandle_t *handle = NULL;
+
+	REQUIRE(timerp != NULL && *timerp != NULL);
+
+	timer = *timerp;
+	*timerp = NULL;
+
+	handle = timer->handle;
+
+	REQUIRE(isc__nm_in_netthread());
+	REQUIRE(VALID_NMHANDLE(handle));
+	REQUIRE(VALID_NMSOCK(handle->sock));
+
+	if (isc_refcount_decrement(&timer->references) == 1) {
+		int r = uv_timer_stop(&timer->timer);
+		UV_RUNTIME_CHECK(uv_timer_stop, r);
+		uv_close((uv_handle_t *)&timer->timer, timer_destroy);
+	}
+}
+
+static void
+timer_cb(uv_timer_t *uvtimer) {
+	isc_nm_timer_t *timer = uv_handle_get_data((uv_handle_t *)uvtimer);
+
+	REQUIRE(timer->cb != NULL);
+
+	timer->cb(timer->cbarg, ISC_R_TIMEDOUT);
+}
+
+void
+isc_nm_timer_start(isc_nm_timer_t *timer, uint64_t timeout) {
+	int r = uv_timer_start(&timer->timer, timer_cb, timeout, 0);
+	UV_RUNTIME_CHECK(uv_timer_start, r);
+}
+
+void
+isc_nm_timer_stop(isc_nm_timer_t *timer) {
+	int r = uv_timer_stop(&timer->timer);
+	UV_RUNTIME_CHECK(uv_timer_stop, r);
+}