Rev 2022 | Rev 2042 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | #include <test.h> |
||
| 30 | #include <arch.h> |
||
| 1104 | jermar | 31 | #include <atomic.h> |
| 1 | jermar | 32 | #include <print.h> |
| 33 | #include <proc/thread.h> |
||
| 34 | |||
| 35 | #include <synch/rwlock.h> |
||
| 36 | |||
| 37 | #define READERS 50 |
||
| 38 | #define WRITERS 50 |
||
| 39 | |||
| 40 | static rwlock_t rwlock; |
||
| 41 | |||
| 2022 | decky | 42 | static void reader(void *arg) |
| 1 | jermar | 43 | { |
| 1658 | vana | 44 | thread_detach(THREAD); |
| 45 | |||
| 15 | jermar | 46 | printf("cpu%d, tid %d: trying to lock rwlock for reading....\n", CPU->id, THREAD->tid); |
| 1 | jermar | 47 | rwlock_read_lock(&rwlock); |
| 48 | rwlock_read_unlock(&rwlock); |
||
| 15 | jermar | 49 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
| 1 | jermar | 50 | |
| 15 | jermar | 51 | printf("cpu%d, tid %d: trying to lock rwlock for writing....\n", CPU->id, THREAD->tid); |
| 1 | jermar | 52 | |
| 53 | rwlock_write_lock(&rwlock); |
||
| 54 | rwlock_write_unlock(&rwlock); |
||
| 15 | jermar | 55 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
| 1 | jermar | 56 | } |
| 57 | |||
| 2028 | decky | 58 | char * test_rwlock3(void) |
| 1 | jermar | 59 | { |
| 60 | int i; |
||
| 61 | thread_t *thrd; |
||
| 62 | |||
| 63 | rwlock_initialize(&rwlock); |
||
| 64 | rwlock_write_lock(&rwlock); |
||
| 65 | |||
| 2028 | decky | 66 | for (i = 0; i < 4; i++) { |
| 1062 | jermar | 67 | thrd = thread_create(reader, NULL, TASK, 0, "reader"); |
| 1 | jermar | 68 | if (thrd) |
| 69 | thread_ready(thrd); |
||
| 70 | else |
||
| 2028 | decky | 71 | printf("Could not create reader %d\n", i); |
| 1 | jermar | 72 | } |
| 73 | |||
| 74 | thread_sleep(1); |
||
| 75 | |||
| 76 | rwlock_write_unlock(&rwlock); |
||
| 2028 | decky | 77 | |
| 78 | return NULL; |
||
| 1 | jermar | 79 | } |