source: mainline/kernel/test/mm/falloc1.c

/*
 * 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 <test.h>
#include <mm/page.h>
#include <mm/frame.h>
#include <arch/mm/page.h>
#include <typedefs.h>
#include <align.h>
#include <stdlib.h>

#define MAX_FRAMES  1024
#define MAX_ORDER   8
#define TEST_RUNS   2

const char *test_falloc1(void)
{
        if (TEST_RUNS < 2)
                return "Test is compiled with TEST_RUNS < 2";

        uintptr_t *frames = (uintptr_t *)
            malloc(MAX_FRAMES * sizeof(uintptr_t));
        if (frames == NULL)
                return "Unable to allocate frames";

        unsigned int results[MAX_FRAMES + 1];

        for (unsigned int run = 0; run < TEST_RUNS; run++) {
                for (size_t count = 1; count <= MAX_FRAMES; count++) {
                        size_t bytes = FRAMES2SIZE(count);

                        TPRINTF("Allocating %zu frames blocks (%zu bytes) ... ",
                            count, bytes);

                        unsigned int allocated = 0;
                        for (unsigned int i = 0; i < (MAX_FRAMES / count); i++) {
                                frames[allocated] = frame_alloc(count, FRAME_ATOMIC, 0);
                                if (frames[allocated]) {
                                        allocated++;
                                } else {
                                        TPRINTF("done. ");
                                        break;
                                }
                        }

                        TPRINTF("%d blocks allocated.\n", allocated);

                        if (run > 0) {
                                if (results[count] != allocated)
                                        return "Possible frame leak";
                        } else
                                results[count] = allocated;

                        TPRINTF("Deallocating ... ");

                        for (unsigned int i = 0; i < allocated; i++)
                                frame_free(frames[i], count);

                        TPRINTF("done.\n");
                }
        }

        free(frames);

        return NULL;
}