diff options
Diffstat (limited to 'testsuites/libtests/block08/bdbuf_test3_2.c')
| -rw-r--r-- | testsuites/libtests/block08/bdbuf_test3_2.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/testsuites/libtests/block08/bdbuf_test3_2.c b/testsuites/libtests/block08/bdbuf_test3_2.c new file mode 100644 index 0000000000..ddebce4e71 --- /dev/null +++ b/testsuites/libtests/block08/bdbuf_test3_2.c @@ -0,0 +1,197 @@ +/*! @file + * @brief Check that when there are some tasks waiting for an available + * buffer only one of them get a buffer after some other task releases one. + * + * Test sequence: + * -# Call rtems_bdbuf_read(#N1) in thread #1. + * -# Call rtems_bdbuf_get(#N2) in thread #2. + * This thread blocks because we have no buffers available. + * -# Call rtems_bdbuf_get(#N3) in thread #3. + * This thread also blocks because we have no buffers available. + * -# Call rtems_bdbuf_release_modified(#N1) in thread #1. + * -# Check that only one thread (thread #2 or thread #3) got a buffer. + * Another thread shall still be blocked. + * + * 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. + * + * $Id$ + */ + +#include <bdbuf_tests.h> + +static rtems_task bdbuf_test3_2_thread1(rtems_task_argument arg); +static rtems_task bdbuf_test3_2_thread2(rtems_task_argument arg); +static rtems_task bdbuf_test3_2_thread3(rtems_task_argument arg); + +/* Block number used in the test */ +#define TEST_BLK_NUM_N1 90 +#define TEST_BLK_NUM_N2 92 +#define TEST_BLK_NUM_N3 94 + +void +bdbuf_test3_2_main() +{ + bdbuf_test_msg msg; + + TEST_START("Test 3.2"); + + /* + * Create working threads. + */ + SET_THREAD_PRIORITY(2, LOW); + SET_THREAD_PRIORITY(3, HIGH); + START_THREAD(1, bdbuf_test3_2_thread1); + START_THREAD(2, bdbuf_test3_2_thread2); + START_THREAD(3, bdbuf_test3_2_thread3); + + /* + * Start thread #1: it will read buffer #N1. + * Driver is asked to read this buffer. + */ + WAIT_DRV_MSG(&msg); + SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0); + + WAIT_THREAD_SYNC(1); + + /* + * Block thread #2 and thread #3 on get buffers #N1 and #N2 + * correspondingly. + */ + CONTINUE_THREAD(2); + CONTINUE_THREAD(3); + + /* Make sure threads managed to block on the buffers get. */ + CHECK_THREAD_BLOCKED(2); + CHECK_THREAD_BLOCKED(3); + + /* + * Step 4: + * Thread #1 release buffer. + */ + CONTINUE_THREAD(1); + + /* + * Check that thread #2 unblocked after this. + */ + WAIT_THREAD_SYNC(2); + TEST_CHECK_RESULT("5"); + + CHECK_THREAD_BLOCKED(3); + + /* Release buffer in thread #2 */ + CONTINUE_THREAD(2); + + /* wait for driver message to flush it onto a disk */ + WAIT_DRV_MSG_WR(&msg); + SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0); + + /* Wait for thread #3 to be unblocked */ + WAIT_THREAD_SYNC(3); + + /* Release buffer in thread #3 */ + CONTINUE_THREAD(3); + + /* wait for driver message to flush it onto a disk */ + WAIT_DRV_MSG_WR(&msg); + SEND_DRV_MSG(0, 0, RTEMS_SUCCESSFUL, 0); + + TEST_END(); +} + +static rtems_task +bdbuf_test3_2_thread1(rtems_task_argument arg) +{ + rtems_status_code rc; + rtems_bdbuf_buffer *bd = NULL; + + /* + * Step 1: + * Call rtems_bdbuf_read(#N) to get a buffer; + */ + rc = rtems_bdbuf_read(test_dev, TEST_BLK_NUM_N1, &bd); + if (rc != RTEMS_SUCCESSFUL) + { + TEST_FAILED(); + } + + CONTINUE_MAIN(1); + + /* + * Step 4: + * Call rtems_bdbuf_release(#N). + */ + rc = rtems_bdbuf_release(bd); + if (rc != RTEMS_SUCCESSFUL) + { + TEST_FAILED(); + } + + THREAD_END(); +} + +static rtems_task +bdbuf_test3_2_thread2(rtems_task_argument arg) +{ + rtems_status_code rc; + rtems_bdbuf_buffer *bd = NULL; + + WAIT_MAIN_SYNC(2); + + /* + * Step 2: + * In thread #2 call get(#N2) + */ + rc = rtems_bdbuf_get(test_dev, TEST_BLK_NUM_N2, &bd); + if (rc != RTEMS_SUCCESSFUL) + { + TEST_FAILED(); + } + + printk("Thread #2 DEBLOCK\n"); + CONTINUE_MAIN(2); + + rc = rtems_bdbuf_release_modified(bd); + if (rc != RTEMS_SUCCESSFUL) + { + TEST_FAILED(); + } + + THREAD_END(); +} + +static rtems_task +bdbuf_test3_2_thread3(rtems_task_argument arg) +{ + rtems_status_code rc; + rtems_bdbuf_buffer *bd = NULL; + + WAIT_MAIN_SYNC(3); + + /* + * Step 3: + * In thread #3 call get(#N3) + */ + rc = rtems_bdbuf_get(test_dev, TEST_BLK_NUM_N3, &bd); + if (rc != RTEMS_SUCCESSFUL) + { + TEST_FAILED(); + } + + printk("Thread #3 DEBLOCK\n"); + + CONTINUE_MAIN(3); + + rc = rtems_bdbuf_release_modified(bd); + if (rc != RTEMS_SUCCESSFUL) + { + TEST_FAILED(); + } + + THREAD_END(); +} + |