- minor changes
git-svn-id: http://svn.lfbs.rwth-aachen.de/svn/scc/trunk/MetalSVM@90 315a16e6-25f9-4109-90ae-ca3045a26c18
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kernel/tests.c
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kernel/tests.c
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/*
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* Copyright 2010 Stefan Lankes, Chair for Operating Systems,
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* RWTH Aachen University
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of MetalSVM.
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*/
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#include <metalsvm/stddef.h>
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#include <metalsvm/stdio.h>
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#include <metalsvm/time.h>
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#include <metalsvm/tasks.h>
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#include <metalsvm/semaphore.h>
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#include <metalsvm/mailbox.h>
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#include <metalsvm/syscall.h>
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static sem_t consuming, producing;
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static mailbox_int32_t mbox;
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static int val = 0;
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static int STDCALL consumer(void* arg)
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{
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int i, m = 0;
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for(i=0; i<5; i++) {
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sem_wait(&consuming);
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kprintf("Consumer got %d\n", val);
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val = 0;
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sem_post(&producing);
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}
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for(i=0; i<5; i++) {
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mailbox_int32_fetch(&mbox, &m);
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kprintf("Got mail %d\n", m);
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}
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return 0;
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}
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static int STDCALL producer(void* arg)
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{
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int i;
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int mail[5] = {1, 2, 3, 4, 5};
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for(i=0; i<5; i++) {
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sem_wait(&producing);
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kprintf("Produce value: current val %d\n", val);
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val = 42;
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sem_post(&consuming);
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}
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for(i=0; i<5; i++) {
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//kprintf("Send mail %d\n", mail[i]);
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mailbox_int32_post(&mbox, mail[i]);
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}
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return 0;
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}
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static int STDCALL foo(void* arg)
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{
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int i;
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if (!arg)
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return 0;
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for(i=0; i<5; i++) {
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kputs((char*) arg);
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sleep(1);
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}
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return 42;
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}
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static int STDCALL join_test(void* arg)
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{
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tid_t id;
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int ret, result = -1234;
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ret = create_kernel_task(&id, foo, "Hello from foo2\n");
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kprintf("Wait for task %u: ret = %d\n", id, ret);
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ret = join_task(id, &result);
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kprintf("Task %u finished: ret = %d, result = %d\n", id, ret, result);
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return 0;
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}
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static int STDCALL userfoo(void* arg)
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{
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int i;
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if (!arg)
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return 0;
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for (i = 0; i < 5; i++) {
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SYSCALL1(__NR_write, arg);
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}
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// demo of a general protection fault
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//kprintf("test user\n");
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/* task exit */
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SYSCALL1(__NR_exit, 0);
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return 0;
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}
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int test_init(void)
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{
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tid_t id1, id2, id3, id4, id5;
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sem_init(&producing, 1);
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sem_init(&consuming, 0);
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mailbox_int32_init(&mbox);
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create_kernel_task(&id1, foo, "Hello from foo1\n");
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create_kernel_task(&id2, join_test, NULL);
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create_kernel_task(&id3, producer, NULL);
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create_kernel_task(&id4, consumer, NULL);
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create_user_task(&id5, userfoo, "Hello from user process foo\n", 0);
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return 0;
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}
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