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- /*
- * Copyright (c) 2014, Vsevolod Stakhov
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY AUTHOR ''AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #ifndef RDNS_EV_H_
- #define RDNS_EV_H_
-
- #include "contrib/libev/ev.h"
- #include <stdlib.h>
- #include <string.h>
- #include "rdns.h"
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- static void* rdns_libev_add_read (void *priv_data, int fd, void *user_data);
- static void rdns_libev_del_read(void *priv_data, void *ev_data);
- static void* rdns_libev_add_write (void *priv_data, int fd, void *user_data);
- static void rdns_libev_del_write (void *priv_data, void *ev_data);
- static void* rdns_libev_add_timer (void *priv_data, double after, void *user_data);
- static void* rdns_libev_add_periodic (void *priv_data, double after,
- rdns_periodic_callback cb, void *user_data);
- static void rdns_libev_del_periodic (void *priv_data, void *ev_data);
- static void rdns_libev_repeat_timer (void *priv_data, void *ev_data);
- static void rdns_libev_del_timer (void *priv_data, void *ev_data);
-
- struct rdns_ev_periodic_cbdata {
- ev_timer *ev;
- rdns_periodic_callback cb;
- void *cbdata;
- };
-
- static void
- rdns_bind_libev (struct rdns_resolver *resolver, struct ev_loop *loop)
- {
- static struct rdns_async_context ev_ctx = {
- .data = NULL,
- .add_read = rdns_libev_add_read,
- .del_read = rdns_libev_del_read,
- .add_write = rdns_libev_add_write,
- .del_write = rdns_libev_del_write,
- .add_timer = rdns_libev_add_timer,
- .repeat_timer = rdns_libev_repeat_timer,
- .del_timer = rdns_libev_del_timer,
- .add_periodic = rdns_libev_add_periodic,
- .del_periodic = rdns_libev_del_periodic,
- .cleanup = NULL
- }, *nctx;
- void *ptr;
-
- /* XXX: never got freed */
- ptr = malloc (sizeof (struct rdns_async_context));
- if (ptr != NULL) {
- nctx = (struct rdns_async_context *)ptr;
- memcpy (ptr, (void *)&ev_ctx, sizeof (struct rdns_async_context));
- nctx->data = (void*)loop;
- rdns_resolver_async_bind (resolver, nctx);
- }
- }
-
- static void
- rdns_libev_read_event (struct ev_loop *loop, ev_io *ev, int revents)
- {
- rdns_process_read (ev->fd, ev->data);
- }
-
- static void
- rdns_libev_write_event (struct ev_loop *loop, ev_io *ev, int revents)
- {
- rdns_process_write(ev->fd, ev->data);
- }
-
- static void
- rdns_libev_timer_event (struct ev_loop *loop, ev_timer *ev, int revents)
- {
- rdns_process_timer (ev->data);
- }
-
- static void
- rdns_libev_periodic_event (struct ev_loop *loop, ev_timer *ev, int revents)
- {
- struct rdns_ev_periodic_cbdata *cbdata = (struct rdns_ev_periodic_cbdata *)
- ev->data;
- cbdata->cb (cbdata->cbdata);
- }
-
- static void*
- rdns_libev_add_read (void *priv_data, int fd, void *user_data)
- {
- ev_io *ev;
- void *ptr;
-
- ptr = malloc (sizeof (ev_io));
- if (ptr != NULL) {
- ev = (ev_io *)ptr;
- ev_io_init (ev, rdns_libev_read_event, fd, EV_READ);
- ev->data = user_data;
- ev_io_start ((struct ev_loop *)priv_data, ev);
- }
- return ptr;
- }
-
- static void
- rdns_libev_del_read (void *priv_data, void *ev_data)
- {
- ev_io *ev = (ev_io*)ev_data;
- if (ev != NULL) {
- ev_io_stop ((struct ev_loop *)priv_data, ev);
- free ((void *)ev);
- }
- }
- static void*
- rdns_libev_add_write (void *priv_data, int fd, void *user_data)
- {
- ev_io *ev;
-
- ev = (ev_io *)malloc (sizeof (ev_io));
- if (ev != NULL) {
- ev_io_init (ev, rdns_libev_write_event, fd, EV_WRITE);
- ev->data = user_data;
- ev_io_start ((struct ev_loop *)priv_data, ev);
- }
- return (void *)ev;
- }
-
- static void
- rdns_libev_del_write (void *priv_data, void *ev_data)
- {
- ev_io *ev = (ev_io *)ev_data;
- if (ev != NULL) {
- ev_io_stop ((struct ev_loop *)priv_data, ev);
- free ((void *)ev);
- }
- }
-
- static void*
- rdns_libev_add_timer (void *priv_data, double after, void *user_data)
- {
- ev_timer *ev;
- ev = (ev_timer *)malloc (sizeof (ev_timer));
- if (ev != NULL) {
- ev_timer_init (ev, rdns_libev_timer_event, after, after);
- ev->data = user_data;
- ev_now_update_if_cheap ((struct ev_loop *)priv_data);
- ev_timer_start ((struct ev_loop *)priv_data, ev);
- }
- return (void *)ev;
- }
-
- static void*
- rdns_libev_add_periodic (void *priv_data, double after,
- rdns_periodic_callback cb, void *user_data)
- {
- ev_timer *ev;
- struct rdns_ev_periodic_cbdata *cbdata = NULL;
-
- ev = (ev_timer *)malloc (sizeof (ev_timer));
- if (ev != NULL) {
- cbdata = (struct rdns_ev_periodic_cbdata *)
- malloc (sizeof (struct rdns_ev_periodic_cbdata));
- if (cbdata != NULL) {
- cbdata->cb = cb;
- cbdata->cbdata = user_data;
- cbdata->ev = ev;
- ev_timer_init (ev, rdns_libev_periodic_event, after, after);
- ev->data = cbdata;
- ev_now_update_if_cheap ((struct ev_loop *)priv_data);
- ev_timer_start ((struct ev_loop *)priv_data, ev);
- }
- else {
- free ((void *)ev);
- return NULL;
- }
- }
- return (void *)cbdata;
- }
-
- static void
- rdns_libev_del_periodic (void *priv_data, void *ev_data)
- {
- struct rdns_ev_periodic_cbdata *cbdata = (struct rdns_ev_periodic_cbdata *)
- ev_data;
- if (cbdata != NULL) {
- ev_timer_stop ((struct ev_loop *)priv_data, (ev_timer *)cbdata->ev);
- free ((void *)cbdata->ev);
- free ((void *)cbdata);
- }
- }
-
- static void
- rdns_libev_repeat_timer (void *priv_data, void *ev_data)
- {
- ev_timer *ev = (ev_timer *)ev_data;
- if (ev != NULL) {
- ev_now_update_if_cheap ((struct ev_loop *)priv_data);
- ev_timer_again ((struct ev_loop *)priv_data, ev);
- }
- }
-
- static void
- rdns_libev_del_timer (void *priv_data, void *ev_data)
- {
- ev_timer *ev = (ev_timer *)ev_data;
- if (ev != NULL) {
- ev_timer_stop ((struct ev_loop *)priv_data, ev);
- free ((void *)ev);
- }
- }
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* RDNS_EV_H_ */
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