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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/waitq.h> |
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| 36 | #include <synch/semaphore.h> |
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| 37 | |||
| 4263 | mejdrech | 38 | #define AT_ONCE 3 |
| 39 | #define PRODUCERS 50 |
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| 40 | #define CONSUMERS 50 |
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| 1 | jermar | 41 | |
| 42 | static semaphore_t sem; |
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| 43 | |||
| 44 | static waitq_t can_start; |
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| 475 | jermar | 45 | static atomic_t items_produced; |
| 46 | static atomic_t items_consumed; |
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| 1 | jermar | 47 | |
| 2022 | decky | 48 | static void producer(void *arg) |
| 1 | jermar | 49 | { |
| 4263 | mejdrech | 50 | thread_detach(THREAD); |
| 51 | |||
| 1 | jermar | 52 | waitq_sleep(&can_start); |
| 4263 | mejdrech | 53 | |
| 1 | jermar | 54 | semaphore_down(&sem); |
| 55 | atomic_inc(&items_produced); |
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| 56 | thread_usleep(250); |
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| 57 | semaphore_up(&sem); |
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| 58 | } |
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| 59 | |||
| 2022 | decky | 60 | static void consumer(void *arg) |
| 1 | jermar | 61 | { |
| 4263 | mejdrech | 62 | thread_detach(THREAD); |
| 1658 | vana | 63 | |
| 1 | jermar | 64 | waitq_sleep(&can_start); |
| 65 | |||
| 66 | semaphore_down(&sem); |
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| 67 | atomic_inc(&items_consumed); |
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| 68 | thread_usleep(500); |
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| 69 | semaphore_up(&sem); |
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| 70 | } |
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| 71 | |||
| 4263 | mejdrech | 72 | char *test_semaphore1(void) |
| 1 | jermar | 73 | { |
| 74 | int i, j, k; |
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| 75 | int consumers, producers; |
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| 76 | |||
| 77 | waitq_initialize(&can_start); |
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| 78 | semaphore_initialize(&sem, AT_ONCE); |
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| 4263 | mejdrech | 79 | |
| 2028 | decky | 80 | for (i = 1; i <= 3; i++) { |
| 1 | jermar | 81 | thread_t *thrd; |
| 4263 | mejdrech | 82 | |
| 627 | jermar | 83 | atomic_set(&items_produced, 0); |
| 84 | atomic_set(&items_consumed, 0); |
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| 1 | jermar | 85 | |
| 86 | consumers = i * CONSUMERS; |
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| 2028 | decky | 87 | producers = (4 - i) * PRODUCERS; |
| 1 | jermar | 88 | |
| 4263 | mejdrech | 89 | TPRINTF("Creating %d consumers and %d producers...", consumers, producers); |
| 90 | |||
| 2028 | decky | 91 | for (j = 0; j < (CONSUMERS + PRODUCERS) / 2; j++) { |
| 92 | for (k = 0; k < i; k++) { |
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| 2042 | decky | 93 | thrd = thread_create(consumer, NULL, TASK, 0, "consumer", false); |
| 1 | jermar | 94 | if (thrd) |
| 95 | thread_ready(thrd); |
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| 96 | else |
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| 4263 | mejdrech | 97 | TPRINTF("could not create consumer %d\n", i); |
| 1 | jermar | 98 | } |
| 2028 | decky | 99 | for (k = 0; k < (4 - i); k++) { |
| 2042 | decky | 100 | thrd = thread_create(producer, NULL, TASK, 0, "producer", false); |
| 1 | jermar | 101 | if (thrd) |
| 102 | thread_ready(thrd); |
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| 103 | else |
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| 4263 | mejdrech | 104 | TPRINTF("could not create producer %d\n", i); |
| 1 | jermar | 105 | } |
| 106 | } |
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| 4263 | mejdrech | 107 | |
| 108 | TPRINTF("ok\n"); |
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| 109 | |||
| 1 | jermar | 110 | thread_sleep(1); |
| 111 | waitq_wakeup(&can_start, WAKEUP_ALL); |
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| 4263 | mejdrech | 112 | |
| 2028 | decky | 113 | while ((items_consumed.count != consumers) || (items_produced.count != producers)) { |
| 4263 | mejdrech | 114 | TPRINTF("%d consumers remaining, %d producers remaining\n", consumers - items_consumed.count, producers - items_produced.count); |
| 1 | jermar | 115 | thread_sleep(1); |
| 116 | } |
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| 117 | } |
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| 2028 | decky | 118 | |
| 119 | return NULL; |
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| 1 | jermar | 120 | } |