source: vendor/current/source3/torture/msgtest.c

/* 
   Unix SMB/CIFS implementation.
   Copyright (C) Andrew Tridgell 2000

   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/>.
*/

/*
  test code for internal messaging
 */

#include "includes.h"
#include "messages.h"

static int pong_count;


/****************************************************************************
a useful function for testing the message system
****************************************************************************/
static void pong_message(struct messaging_context *msg_ctx,
                         void *private_data, 
                         uint32_t msg_type, 
                         struct server_id pid,
                         DATA_BLOB *data)
{
        pong_count++;
}

 int main(int argc, char *argv[])
{
        struct tevent_context *evt_ctx;
        struct messaging_context *msg_ctx;
        pid_t pid;
        int i, n;
        char buf[12];
        int ret;
        TALLOC_CTX *frame = talloc_stackframe();

        smb_init_locale();

        setup_logging(argv[0], DEBUG_STDOUT);

        lp_load_global(get_dyn_CONFIGFILE());

        if (!(evt_ctx = samba_tevent_context_init(NULL)) ||
            !(msg_ctx = messaging_init(NULL, evt_ctx))) {
                fprintf(stderr, "could not init messaging context\n");
                TALLOC_FREE(frame);
                exit(1);
        }

        if (argc != 3) {
                fprintf(stderr, "%s: Usage - %s pid count\n", argv[0],
                        argv[0]);
                TALLOC_FREE(frame);
                exit(1);
        }

        pid = atoi(argv[1]);
        n = atoi(argv[2]);

        messaging_register(msg_ctx, NULL, MSG_PONG, pong_message);

        for (i=0;i<n;i++) {
                messaging_send(msg_ctx, pid_to_procid(pid), MSG_PING,
                               &data_blob_null);
        }

        while (pong_count < i) {
                ret = tevent_loop_once(evt_ctx);
                if (ret != 0) {
                        break;
                }
        }

        /* Ensure all messages get through to ourselves. */
        pong_count = 0;

        strlcpy(buf, "1234567890", sizeof(buf));

        for (i=0;i<n;i++) {
                messaging_send(msg_ctx, messaging_server_id(msg_ctx), MSG_PING,
                               &data_blob_null);
                messaging_send_buf(msg_ctx, messaging_server_id(msg_ctx),
                                   MSG_PING,(uint8_t *)buf, 11);
        }

        /*
         * We have to loop at least 2 times for
         * each message as local ping messages are
         * handled by an immediate callback, that
         * has to be dispatched, which sends a pong
         * message, which also has to be dispatched.
         * Above we sent 2*n messages, which means
         * we have to dispatch 4*n times.
         */

        while (pong_count < n*2) {
                ret = tevent_loop_once(evt_ctx);
                if (ret != 0) {
                        break;
                }
        }

        if (pong_count != 2*n) {
                fprintf(stderr, "Message count failed (%d).\n", pong_count);
        }

        /* Speed testing */

        pong_count = 0;

        {
                struct timeval tv = timeval_current();
                size_t timelimit = n;
                size_t ping_count = 0;

                printf("Sending pings for %d seconds\n", (int)timelimit);
                while (timeval_elapsed(&tv) < timelimit) {              
                        if(NT_STATUS_IS_OK(messaging_send_buf(
                                                   msg_ctx, pid_to_procid(pid),
                                                   MSG_PING,
                                                   (uint8_t *)buf, 11)))
                           ping_count++;
                        if(NT_STATUS_IS_OK(messaging_send(
                                                   msg_ctx, pid_to_procid(pid),
                                                   MSG_PING, &data_blob_null)))
                           ping_count++;

                        while (ping_count > pong_count + 20) {
                                ret = tevent_loop_once(evt_ctx);
                                if (ret != 0) {
                                        break;
                                }
                        }
                }

                printf("waiting for %d remaining replies (done %d)\n", 
                       (int)(ping_count - pong_count), pong_count);
                while (timeval_elapsed(&tv) < 30 && pong_count < ping_count) {
                        ret = tevent_loop_once(evt_ctx);
                        if (ret != 0) {
                                break;
                        }
                }

                if (ping_count != pong_count) {
                        fprintf(stderr, "ping test failed! received %d, sent "
                                "%d\n", pong_count, (int)ping_count);
                }

                printf("ping rate of %.0f messages/sec\n", 
                       (ping_count+pong_count)/timeval_elapsed(&tv));
        }

        TALLOC_FREE(frame);
        return (0);
}