76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (C) 2018 Universita` di Pisa
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. 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 THE AUTHOR 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 AUTHOR 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.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mman.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <net/netmap_user.h>
|
|
#include <pthread.h>
|
|
#include "libnetmap.h"
|
|
|
|
struct nmctx_pthread {
|
|
struct nmctx up;
|
|
pthread_mutex_t mutex;
|
|
};
|
|
|
|
static struct nmctx_pthread nmctx_pthreadsafe;
|
|
|
|
static void
|
|
nmctx_pthread_lock(struct nmctx *ctx, int lock)
|
|
{
|
|
struct nmctx_pthread *ctxp =
|
|
(struct nmctx_pthread *)ctx;
|
|
if (lock) {
|
|
pthread_mutex_lock(&ctxp->mutex);
|
|
} else {
|
|
pthread_mutex_unlock(&ctxp->mutex);
|
|
}
|
|
}
|
|
|
|
void __attribute__ ((constructor))
|
|
nmctx_set_threadsafe(void)
|
|
{
|
|
struct nmctx *old;
|
|
|
|
pthread_mutex_init(&nmctx_pthreadsafe.mutex, NULL);
|
|
old = nmctx_set_default(&nmctx_pthreadsafe.up);
|
|
nmctx_pthreadsafe.up = *old;
|
|
nmctx_pthreadsafe.up.lock = nmctx_pthread_lock;
|
|
}
|
|
|
|
int nmctx_threadsafe;
|