asdk-libdrm

/*

 * Copyright © 2007 Intel Corporation

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice (including the next

 * paragraph) shall be included in all copies or substantial portions of the

 * Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 *

 * Authors:

 *    Eric Anholt <eric@anholt.net>

 *

 */

​

/** @file lock.c

 * Tests various potential failures of the DRM locking mechanisms

 */

​

#include <limits.h>

#include "drmtest.h"

​

enum auth_event {

    SERVER_READY,

    CLIENT_MAGIC,

    SERVER_LOCKED,

    CLIENT_LOCKED,

};

​

int commfd[2];

unsigned int lock1 = 0x00001111;

unsigned int lock2 = 0x00002222;

​

/* return time in milliseconds */

static unsigned int

get_millis()

{

    struct timeval tv;

​

    gettimeofday(&tv, NULL);

    return tv.tv_sec * 1000 + tv.tv_usec / 1000;

}

​

static void

wait_event(int pipe, enum auth_event expected_event)

{

    int ret;

    enum auth_event event;

    unsigned char in;

​

    ret = read(commfd[pipe], &in, 1);