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/*! @file
* @brief Check how rtems_bdbuf_sync() works.
*
* Test sequence:
* -# Call rtems_bdbuf_read(#N) in thread #1.
* -# Call rtems_bdbuf_read(#N) from thread #2.
* -# Thread #2 blocks on this call.
* -# Call rtems_bdbuf_sync(#N) in thread #1.
* -# After a while disk driver gets write request for block #N.
* Notify bdbuf library about write complete event.
* -# Check that thread #1 unlocked after this.
* -# Check that thread #2 unblocks and get buffer #N.
* -# Release buffer in thread #2.
* .
*
* Copyright (C) 2010 OKTET Labs, St.-Petersburg, Russia
* Author: Oleg Kravtsov <Oleg.Kravtsov@oktetlabs.ru>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <bdbuf_tests.h>
static rtems_task bdbuf_test4_1_thread1(rtems_task_argument arg);
static rtems_task bdbuf_test4_1_thread2(rtems_task_argument arg);
/* Block number used in the test */
#define TEST_BLK_NUM_N 112
void
bdbuf_test4_1_main()
{
bdbuf_test_msg msg;
TEST_START("Test 4.1");
START_THREAD(1, bdbuf_test4_1_thread1);
START_THREAD(2, bdbuf_test4_1_thread2);
/*
* Step 1:
* Call rtems_bdbuf_read(#N) in thread #1.
* Wait for read request in disk driver.
*/
WAIT_DRV_MSG(&msg);
SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0);
/* Wait for return from rtems_bdbuf_read(#N) function. */
WAIT_THREAD_SYNC(1);
/*
* Step 2:
* Call rtems_bdbuf_read(#N) in thread #2.
*/
CONTINUE_THREAD(2);
/* Make sure that thread #2 blocks */
CHECK_THREAD_BLOCKED(2);
TEST_CHECK_RESULT("2");
/*
* Step 3:
* Call rtems_bdbuf_sync (#N) in thread #1.
*/
CONTINUE_THREAD(1);
/*
* Setp 4:
* Wait for Write request to device driver.
*/
WAIT_DRV_MSG_WR(&msg);
/* Check that both threads are blocked right now */
CHECK_THREAD_BLOCKED(1);
CHECK_THREAD_BLOCKED(2);
/* Send Write complete notification */
SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0);
/*
* Step 5:
* Check that rtems_bdbuf_sync(#N) call is unlocked.
*/
WAIT_THREAD_SYNC(1);
TEST_CHECK_RESULT("5");
/*
* Step 6:
* Check that rtems_bdbuf_read(#N) call in thread #2 is unlocked.
*/
WAIT_THREAD_SYNC(2);
/*
* Step 7:
* Release buffer in thread #2
*/
CONTINUE_THREAD(2);
/*
* Exit from thread #1.
*/
CONTINUE_THREAD(1);
TEST_END();
}
static rtems_task
bdbuf_test4_1_thread1(rtems_task_argument arg)
{
rtems_status_code rc;
rtems_bdbuf_buffer *bd = NULL;
/*
* Step 1:
* Call rtems_bdbuf_read(#N) in thread #1;
*/
rc = rtems_bdbuf_read(test_dd, TEST_BLK_NUM_N, &bd);
if (rc != RTEMS_SUCCESSFUL)
{
TEST_FAILED();
}
CONTINUE_MAIN(1);
/*
* Step 3:
* Call rtems_bdbuf_sync(#N)
*/
rc = rtems_bdbuf_sync(bd);
if (rc != RTEMS_SUCCESSFUL)
{
TEST_FAILED();
}
CONTINUE_MAIN(1);
THREAD_END();
}
static rtems_task
bdbuf_test4_1_thread2(rtems_task_argument arg)
{
rtems_status_code rc;
rtems_bdbuf_buffer *bd = NULL;
WAIT_MAIN_SYNC(2);
/*
* Step 2:
* In thread #2 call rtems_bdbuf_read(#N).
* We will block on this call.
*/
rc = rtems_bdbuf_read(test_dd, TEST_BLK_NUM_N, &bd);
if (rc != RTEMS_SUCCESSFUL)
{
TEST_FAILED();
}
CONTINUE_MAIN(2);
/*
* Release buffer.
*/
rc = rtems_bdbuf_release(bd);
if (rc != RTEMS_SUCCESSFUL)
{
TEST_FAILED();
}
THREAD_END();
}
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