Imported Upstream version 16.04

[deb_dpdk.git] / lib / librte_vhost / vhost_user / fd_man.h

diff --git a/lib/librte_vhost/vhost_user/fd_man.h b/lib/librte_vhost/vhost_user/fd_man.h
new file mode 100644 (file)
index 0000000..74ecde2
--- /dev/null
+++ b/lib/librte_vhost/vhost_user/fd_man.h
@@ -0,0 +1,67 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   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.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "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 THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS 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 _FD_MAN_H_
+#define _FD_MAN_H_
+#include <stdint.h>
+#include <pthread.h>
+
+#define MAX_FDS 1024
+
+typedef void (*fd_cb)(int fd, void *dat, int *remove);
+
+struct fdentry {
+       int fd;         /* -1 indicates this entry is empty */
+       fd_cb rcb;      /* callback when this fd is readable. */
+       fd_cb wcb;      /* callback when this fd is writeable.*/
+       void *dat;      /* fd context */
+       int busy;       /* whether this entry is being used in cb. */
+};
+
+struct fdset {
+       struct fdentry fd[MAX_FDS];
+       pthread_mutex_t fd_mutex;
+       int num;        /* current fd number of this fdset */
+};
+
+
+void fdset_init(struct fdset *pfdset);
+
+int fdset_add(struct fdset *pfdset, int fd,
+       fd_cb rcb, fd_cb wcb, void *dat);
+
+void fdset_del(struct fdset *pfdset, int fd);
+
+void fdset_event_dispatch(struct fdset *pfdset);
+
+#endif