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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <test.h> |
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| 30 | #include <arch.h> |
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| 31 | #include <arch/atomic.h> |
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| 32 | #include <print.h> |
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| 33 | #include <proc/thread.h> |
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| 34 | |||
| 35 | #include <synch/rwlock.h> |
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| 36 | |||
| 37 | #define READERS 50 |
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| 38 | #define WRITERS 50 |
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| 39 | |||
| 40 | static rwlock_t rwlock; |
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| 41 | |||
| 42 | static void reader(void *arg); |
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| 43 | static void failed(void *arg); |
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| 44 | |||
| 45 | void reader(void *arg) |
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| 46 | { |
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| 47 | printf("cpu%d, tid %d: trying to lock rwlock for reading....\n", the->cpu->id, the->thread->tid); |
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| 48 | rwlock_read_lock(&rwlock); |
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| 49 | rwlock_read_unlock(&rwlock); |
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| 50 | printf("cpu%d, tid %d: success\n", the->cpu->id, the->thread->tid); |
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| 51 | |||
| 52 | printf("cpu%d, tid %d: trying to lock rwlock for writing....\n", the->cpu->id, the->thread->tid); |
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| 53 | |||
| 54 | rwlock_write_lock(&rwlock); |
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| 55 | rwlock_write_unlock(&rwlock); |
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| 56 | printf("cpu%d, tid %d: success\n", the->cpu->id, the->thread->tid); |
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| 57 | |||
| 58 | printf("Test passed.\n"); |
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| 59 | |||
| 60 | } |
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| 61 | |||
| 62 | void failed(void) |
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| 63 | { |
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| 64 | printf("Test failed prematurely.\n"); |
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| 65 | thread_exit(); |
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| 66 | } |
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| 67 | |||
| 68 | void test(void) |
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| 69 | { |
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| 70 | int i; |
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| 71 | thread_t *thrd; |
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| 72 | |||
| 73 | printf("Read/write locks test #2\n"); |
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| 74 | |||
| 75 | rwlock_initialize(&rwlock); |
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| 76 | |||
| 77 | rwlock_write_lock(&rwlock); |
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| 78 | |||
| 79 | for (i=0; i<4; i++) { |
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| 80 | thrd = thread_create(reader, NULL, the->task, 0); |
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| 81 | if (thrd) |
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| 82 | thread_ready(thrd); |
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| 83 | else |
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| 84 | failed(); |
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| 85 | } |
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| 86 | |||
| 87 | |||
| 88 | thread_sleep(1); |
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| 89 | |||
| 90 | rwlock_write_unlock(&rwlock); |
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| 91 | } |