source: mainline/kernel/test/mm/falloc2.c@ 6eef3c4

/*
 * Copyright (c) 2006 Sergey Bondari
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <print.h>
#include <test.h>
#include <mm/page.h>
#include <mm/frame.h>
#include <mm/slab.h>
#include <arch/mm/page.h>
#include <typedefs.h>
#include <atomic.h>
#include <debug.h>
#include <proc/thread.h>
#include <memstr.h>
#include <arch.h>

#define MAX_FRAMES  256U
#define MAX_ORDER   8

#define THREAD_RUNS  1
#define THREADS      8

static atomic_t thread_count;
static atomic_t thread_fail;

static void falloc(void *arg)
{
        uint8_t val = THREAD->tid % THREADS;
        
        void **frames = (void **)
            malloc(MAX_FRAMES * sizeof(void *), FRAME_ATOMIC);
        if (frames == NULL) {
                TPRINTF("Thread #%" PRIu64 " (cpu%u): "
                    "Unable to allocate frames\n", THREAD->tid, CPU->id);
                atomic_inc(&thread_fail);
                atomic_dec(&thread_count);
                return;
        }
        
        thread_detach(THREAD);
        
        for (unsigned int run = 0; run < THREAD_RUNS; run++) {
                for (unsigned int order = 0; order <= MAX_ORDER; order++) {
                        TPRINTF("Thread #%" PRIu64 " (cpu%u): "
                            "Allocating %u frames blocks ... \n", THREAD->tid,
                            CPU->id, 1 << order);
                        
                        unsigned int allocated = 0;
                        for (unsigned int i = 0; i < (MAX_FRAMES >> order); i++) {
                                frames[allocated] =
                                    frame_alloc(order, FRAME_ATOMIC | FRAME_KA);
                                if (frames[allocated]) {
                                        memsetb(frames[allocated], FRAME_SIZE << order, val);
                                        allocated++;
                                } else
                                        break;
                        }
                        
                        TPRINTF("Thread #%" PRIu64 " (cpu%u): "
                            "%u blocks allocated.\n", THREAD->tid, CPU->id,
                            allocated);
                        TPRINTF("Thread #%" PRIu64 " (cpu%u): "
                            "Deallocating ... \n", THREAD->tid, CPU->id);
                        
                        for (unsigned int i = 0; i < allocated; i++) {
                                for (size_t k = 0; k <= (((size_t) FRAME_SIZE << order) - 1);
                                    k++) {
                                        if (((uint8_t *) frames[i])[k] != val) {
                                                TPRINTF("Thread #%" PRIu64 " (cpu%u): "
                                                    "Unexpected data (%c) in block %p offset %zu\n",
                                                    THREAD->tid, CPU->id, ((char *) frames[i])[k],
                                                    frames[i], k);
                                                atomic_inc(&thread_fail);
                                                goto cleanup;
                                        }
                                }
                                frame_free(KA2PA(frames[i]));
                        }
                        
                        TPRINTF("Thread #%" PRIu64 " (cpu%u): "
                            "Finished run.\n", THREAD->tid, CPU->id);
                }
        }
        
cleanup:
        free(frames);
        
        TPRINTF("Thread #%" PRIu64 " (cpu%u): Exiting\n",
            THREAD->tid, CPU->id);
        atomic_dec(&thread_count);
}

const char *test_falloc2(void)
{
        atomic_set(&thread_count, THREADS);
        atomic_set(&thread_fail, 0);
        
        for (unsigned int i = 0; i < THREADS; i++) {
                thread_t *thrd = thread_create(falloc, NULL, TASK,
                    THREAD_FLAG_NONE, "falloc2");
                if (!thrd) {
                        TPRINTF("Could not create thread %u\n", i);
                        break;
                }
                thread_ready(thrd);
        }
        
        while (atomic_get(&thread_count) > 0) {
                TPRINTF("Threads left: %" PRIua "\n",
                    atomic_get(&thread_count));
                thread_sleep(1);
        }
        
        if (atomic_get(&thread_fail) == 0)
                return NULL;
        
        return "Test failed";
}