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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
| 1 | jermar | 3 | * All rights reserved. |
| 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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| 1104 | jermar | 31 | #include <atomic.h> |
| 1 | jermar | 32 | #include <print.h> |
| 33 | #include <proc/thread.h> |
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| 34 | |||
| 35 | #include <synch/rwlock.h> |
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| 36 | |||
| 2053 | decky | 37 | #define THREADS 4 |
| 1 | jermar | 38 | |
| 2053 | decky | 39 | static atomic_t thread_count; |
| 1 | jermar | 40 | static rwlock_t rwlock; |
| 2053 | decky | 41 | static bool sh_quiet; |
| 1 | jermar | 42 | |
| 2022 | decky | 43 | static void reader(void *arg) |
| 1 | jermar | 44 | { |
| 1658 | vana | 45 | thread_detach(THREAD); |
| 2053 | decky | 46 | |
| 47 | if (!sh_quiet) |
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| 48 | printf("cpu%d, tid %d: trying to lock rwlock for reading....\n", CPU->id, THREAD->tid); |
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| 49 | |||
| 1 | jermar | 50 | rwlock_read_lock(&rwlock); |
| 2053 | decky | 51 | rwlock_read_unlock(&rwlock); |
| 52 | |||
| 53 | if (!sh_quiet) { |
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| 54 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
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| 55 | printf("cpu%d, tid %d: trying to lock rwlock for writing....\n", CPU->id, THREAD->tid); |
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| 56 | } |
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| 1 | jermar | 57 | |
| 58 | rwlock_write_lock(&rwlock); |
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| 59 | rwlock_write_unlock(&rwlock); |
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| 2053 | decky | 60 | |
| 61 | if (!sh_quiet) |
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| 62 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
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| 63 | |||
| 64 | atomic_dec(&thread_count); |
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| 1 | jermar | 65 | } |
| 66 | |||
| 2050 | decky | 67 | char * test_rwlock3(bool quiet) |
| 1 | jermar | 68 | { |
| 69 | int i; |
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| 70 | thread_t *thrd; |
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| 2053 | decky | 71 | sh_quiet = quiet; |
| 1 | jermar | 72 | |
| 2053 | decky | 73 | atomic_set(&thread_count, THREADS); |
| 74 | |||
| 1 | jermar | 75 | rwlock_initialize(&rwlock); |
| 76 | rwlock_write_lock(&rwlock); |
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| 77 | |||
| 2053 | decky | 78 | for (i = 0; i < THREADS; i++) { |
| 2042 | decky | 79 | thrd = thread_create(reader, NULL, TASK, 0, "reader", false); |
| 1 | jermar | 80 | if (thrd) |
| 81 | thread_ready(thrd); |
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| 2053 | decky | 82 | else if (!quiet) |
| 2028 | decky | 83 | printf("Could not create reader %d\n", i); |
| 1 | jermar | 84 | } |
| 85 | |||
| 86 | thread_sleep(1); |
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| 87 | rwlock_write_unlock(&rwlock); |
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| 2028 | decky | 88 | |
| 2053 | decky | 89 | while (atomic_get(&thread_count) > 0) { |
| 90 | if (!quiet) |
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| 91 | printf("Threads left: %d\n", atomic_get(&thread_count)); |
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| 92 | thread_sleep(1); |
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| 93 | } |
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| 94 | |||
| 2028 | decky | 95 | return NULL; |
| 1 | jermar | 96 | } |