source: vendor/current/source3/lib/asys/tests.c

/*
 * Test async syscalls
 * Copyright (C) Volker Lendecke 2012
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "asys.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>

int main(int argc, const char *argv[])
{
        struct asys_context *ctx;
        int i, fd, ret;

        int *buf;

        int ntasks = 10;

        ret = asys_context_init(&ctx, 0);
        if (ret != 0) {
                perror("asys_context_create failed");
                return 1;
        }

        fd = open("asys_testfile", O_CREAT|O_RDWR, 0644);
        if (fd == -1) {
                perror("open failed");
                return 1;
        }

        buf = calloc(ntasks, sizeof(int));
        if (buf == NULL) {
                perror("calloc failed");
                return 1;
        }

        for (i=0; i<ntasks; i++) {
                buf[i] = i;
        }

        for (i=0; i<ntasks; i++) {
                ret = asys_pwrite(ctx, fd, &buf[i], sizeof(int),
                                  i * sizeof(int), &buf[i]);
                if (ret != 0) {
                        errno = ret;
                        perror("asys_pwrite failed");
                        return 1;
                }
        }

        for (i=0; i<ntasks; i++) {
                struct asys_result result;
                int *pidx;

                ret = asys_results(ctx, &result, 1);
                if (ret < 0) {
                        errno = -ret;
                        perror("asys_result failed");
                        return 1;
                }
                pidx = (int *)result.private_data;

                printf("%d returned %d\n", *pidx, (int)result.ret);
        }

        ret = asys_context_destroy(ctx);
        if (ret != 0) {
                perror("asys_context_delete failed");
                return 1;
        }

        free(buf);

        return 0;
}