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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 | |||
| 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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| 2053 | decky | 41 | static bool sh_quiet; |
| 1 | jermar | 42 | |
| 2022 | decky | 43 | static void writer(void *arg) |
| 1 | jermar | 44 | { |
| 2053 | decky | 45 | if (!sh_quiet) |
| 46 | printf("Trying to lock rwlock for writing....\n"); |
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| 47 | |||
| 1 | jermar | 48 | rwlock_write_lock(&rwlock); |
| 49 | rwlock_write_unlock(&rwlock); |
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| 50 | |||
| 2053 | decky | 51 | if (!sh_quiet) |
| 52 | printf("Trying to lock rwlock for reading....\n"); |
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| 53 | |||
| 1 | jermar | 54 | rwlock_read_lock(&rwlock); |
| 55 | rwlock_read_unlock(&rwlock); |
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| 56 | } |
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| 57 | |||
| 2050 | decky | 58 | char * test_rwlock2(bool quiet) |
| 1 | jermar | 59 | { |
| 60 | thread_t *thrd; |
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| 2053 | decky | 61 | sh_quiet = quiet; |
| 1 | jermar | 62 | |
| 63 | rwlock_initialize(&rwlock); |
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| 64 | |||
| 65 | rwlock_read_lock(&rwlock); |
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| 66 | rwlock_read_lock(&rwlock); |
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| 67 | rwlock_read_lock(&rwlock); |
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| 68 | rwlock_read_lock(&rwlock); |
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| 69 | |||
| 2042 | decky | 70 | thrd = thread_create(writer, NULL, TASK, 0, "writer", false); |
| 1 | jermar | 71 | if (thrd) |
| 72 | thread_ready(thrd); |
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| 73 | else |
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| 2028 | decky | 74 | return "Could not create thread"; |
| 1 | jermar | 75 | |
| 76 | thread_sleep(1); |
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| 77 | |||
| 78 | rwlock_read_unlock(&rwlock); |
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| 79 | rwlock_read_unlock(&rwlock); |
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| 80 | rwlock_read_unlock(&rwlock); |
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| 2028 | decky | 81 | rwlock_read_unlock(&rwlock); |
| 82 | |||
| 2053 | decky | 83 | thread_join(thrd); |
| 84 | thread_detach(thrd); |
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| 85 | |||
| 2028 | decky | 86 | return NULL; |
| 1 | jermar | 87 | } |