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/*
 * 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 <arch/types.h>
#include <atomic.h>
#include <debug.h>
#include <proc/thread.h>
#include <memstr.h>
#include <arch.h>

#define MAX_FRAMES 256
#define MAX_ORDER 8

#define THREAD_RUNS 1
#define THREADS 8

static atomic_t thread_count;
static atomic_t thread_fail;
static bool sh_quiet;

static void falloc(void * arg)
{
    int order, run, allocated, i;
    uint8_t val = THREAD->tid % THREADS;
    index_t k;
    
    void **frames =  (void **) malloc(MAX_FRAMES * sizeof(void *), FRAME_ATOMIC);
    if (frames == NULL) {
        if (!sh_quiet)
            printf("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 (run = 0; run < THREAD_RUNS; run++) {
        for (order = 0; order <= MAX_ORDER; order++) {
            if (!sh_quiet)
                printf("Thread #%" PRIu64 " (cpu%u): Allocating %d frames blocks ... \n", THREAD->tid, CPU->id, 1 << order);
            
            allocated = 0;
            for (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;
            }
            
            if (!sh_quiet)
                printf("Thread #%" PRIu64 " (cpu%u): %d blocks allocated.\n", THREAD->tid, CPU->id, allocated);
            
            if (!sh_quiet)
                printf("Thread #%" PRIu64 " (cpu%u): Deallocating ... \n", THREAD->tid, CPU->id);
            
            for (i = 0; i < allocated; i++) {
                for (k = 0; k <= (((index_t) FRAME_SIZE << order) - 1); k++) {
                    if (((uint8_t *) frames[i])[k] != val) {
                        if (!sh_quiet)
                            printf("Thread #%" PRIu64 " (cpu%u): Unexpected data (%c) in block %p offset %#" PRIi "\n", THREAD->tid, CPU->id, ((char *) frames[i])[k], frames[i], k);
                        atomic_inc(&thread_fail);
                        goto cleanup;
                    }
                }
                frame_free(KA2PA(frames[i]));
            }
            
            if (!sh_quiet)
                printf("Thread #%" PRIu64 " (cpu%u): Finished run.\n", THREAD->tid, CPU->id);
        }
    }

cleanup:    
    free(frames);
    
    if (!sh_quiet)
        printf("Thread #%" PRIu64 " (cpu%u): Exiting\n", THREAD->tid, CPU->id);
    atomic_dec(&thread_count);
}

char * test_falloc2(bool quiet)
{
    unsigned int i;
    sh_quiet = quiet;

    atomic_set(&thread_count, THREADS);
    atomic_set(&thread_fail, 0);
        
    for (i = 0; i < THREADS; i++) {
        thread_t * thrd = thread_create(falloc, NULL, TASK, 0, "falloc", false);
        if (!thrd) {
            if (!quiet)
                printf("Could not create thread %u\n", i);
            break;
        }
        thread_ready(thrd);
    }
    
    while (atomic_get(&thread_count) > 0) {
        if (!quiet)
            printf("Threads left: %ld\n", atomic_get(&thread_count));
        thread_sleep(1);
    }
    
    if (atomic_get(&thread_fail) == 0)
        return NULL;
    
    return "Test failed";
}