source: network-demos/ttcp/rtems_ttcp.c @ 0c9330e

/*
 * A collection of hacks, glue, and patches to
 * provide a `UNIX-like' environment to ttcp.
 *
 * Some of the code here may migrate to the libc
 * support routines some day.  Some of the more sleazy
 * hacks should never make it outside this file!
 * 
 * This program may be distributed and used for any purpose.
 * I ask only that you:
 *      1. Leave this author information intact.
 *      2. Document any changes you make.
 *
 * W. Eric Norum
 * Saskatchewan Accelerator Laboratory
 * University of Saskatchewan
 * Saskatoon, Saskatchewan, CANADA
 * eric@skatter.usask.ca
 */

#include <stdio.h>
#include <ctype.h>
#include <rtems.h>
#include <rtems/rtems_bsdnet.h>
#include <rtems/error.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/time.h>

/*
 * Glue between UNIX-style ttcp code and RTEMS
 */
int rtems_ttcp_main (int argc, char **argv);

static int
select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
{
        rtems_panic ("select()");
}

static void
(*signal(int sig, void (*func)()))()
{
        return 0;;
}

int
gettimeofday (struct timeval *tp, struct timezone *tzp)
{
        rtems_clock_time_value now;

        rtems_clock_get (RTEMS_CLOCK_GET_TIME_VALUE, &now);
        tp->tv_sec = now.seconds;
        tp->tv_usec = now.microseconds;
        return 0;
}

#define _SYS_RESOURCE_H_
#define RUSAGE_SELF     0               /* calling process */
#define RUSAGE_CHILDREN -1              /* terminated child processes */
struct rusage {
        struct timeval ru_utime;        /* user time used */
        struct timeval ru_stime;        /* system time used */
        int ru_maxrss;          /* maximum resident set size */
        int ru_ixrss;           /* currently 0 */
        int ru_idrss;           /* integral resident set size */
        int ru_isrss;           /* currently 0 */
        int ru_minflt;          /* page faults not requiring physical I/O */
        int ru_majflt;          /* page faults requiring physical I/O */
        int ru_nswap;           /* swaps */
        int ru_inblock;         /* block input operations */
        int ru_oublock;         /* block output operations */
        int ru_msgsnd;          /* messages sent */
        int ru_msgrcv;          /* messages received */
        int ru_nsignals;        /* signals received */
        int ru_nvcsw;           /* voluntary context switches */
        int ru_nivcsw;          /* involuntary context switches */
};
int
getrusage(int ignored, struct rusage *ru)
{
        rtems_clock_time_value now;
        static struct rusage nullUsage;

        rtems_clock_get (RTEMS_CLOCK_GET_TIME_VALUE, &now);
        *ru = nullUsage;
        ru->ru_stime.tv_sec  = now.seconds;
        ru->ru_stime.tv_usec = now.microseconds;
        ru->ru_utime.tv_sec  = 0;
        ru->ru_utime.tv_usec = 0;
        return 0;
}

static void
rtems_ttcp_exit (int code)
{
        rtems_bsdnet_show_mbuf_stats ();
        rtems_bsdnet_show_if_stats ();
        rtems_bsdnet_show_ip_stats ();
        rtems_bsdnet_show_tcp_stats ();
        exit (code);
}

/*
 * Task to run UNIX ttcp command
 */
char *__progname;
static void
ttcpTask (rtems_task_argument arg)
{
        int code;
        int argc;
        char arg0[10];
        char *argv[20];
        char linebuf[200];

        for (;;) {
                char *cp;

                /*
                 * Set up first argument
                 */
                argc = 1;
                strcpy (arg0, "ttcp");
                argv[0] = __progname = arg0;

#if (defined (WRITE_TEST_ONLY))
                strcpy (linebuf, "-s -t crux");
#elif (defined (READ_TEST_ONLY))
                strcpy (linebuf, "-s -r");
#else
                /*
                 * Read a line
                 */
                printf (">>> %s ", argv[0]);
                fflush (stdout);
                fgets (linebuf, sizeof linebuf, stdin);
#endif

                /*
                 * Break line into arguments
                 */
                cp = linebuf;
                for (;;) {
                        while (isspace (*cp))
                                *cp++ = '\0';
                        if (*cp == '\0')
                                break;
                        if (argc >= ((sizeof argv / sizeof argv[0]) - 1)) {
                                printf ("Too many arguments.\n");
                                argc = 0;
                                break;
                        }
                        argv[argc++] = cp;
                        while (!isspace (*cp)) {
                                if (*cp == '\0')
                                        break;
                                cp++;
                        }
                }
                if (argc > 1) {
                        argv[argc] = NULL;
                        break;
                }
                printf ("You must give some arguments!\n");
                printf ("At the very least, you must provide\n");
                printf ("         -r\n");
                printf ("or\n");
                printf ("         -t destination.internet.address\n");
        }
        code = rtems_ttcp_main (argc, argv);
        rtems_ttcp_exit (code);
}

/*
 * Test network throughput
 */
void
test_network (void)
{
        rtems_id tid;
        rtems_status_code sc;
        rtems_time_of_day now;
        rtems_task_priority my_priority;

        /*
         * Set up time-of-day clock
         */
        now.year = 1997;
        now.month = 1;
        now.day = 1;
        now.hour = 0;
        now.minute = 0;
        now.second = 0;
        now.ticks = 0;
        sc = rtems_clock_set (&now);
        if (sc != RTEMS_SUCCESSFUL) {
                printf ("Can't set date/time; %s\n", rtems_status_text (sc));
                return;
        }

        /*
         * Spawn test task
         */
        rtems_task_set_priority (RTEMS_SELF, RTEMS_CURRENT_PRIORITY, &my_priority);
        sc = rtems_task_create (rtems_build_name ('T', 'T', 'C', 'P'),
                        my_priority,
                        32*1024,
                        RTEMS_PREEMPT|RTEMS_NO_TIMESLICE|RTEMS_NO_ASR|RTEMS_INTERRUPT_LEVEL(0),
                        RTEMS_NO_FLOATING_POINT|RTEMS_LOCAL,
                        &tid);
        if (sc != RTEMS_SUCCESSFUL) {
                printf ("Can't create task; %s\n", rtems_status_text (sc));
                return;
        }
        sc = rtems_task_start (tid, ttcpTask, 0);
        if (sc != RTEMS_SUCCESSFUL) {
                printf ("Can't start task; %s\n", rtems_status_text (sc));
                return;
        }
        rtems_task_suspend (RTEMS_SELF);
}

#define main            rtems_ttcp_main
#define exit(code)      close(fd),rtems_ttcp_exit(code)
#define read_timer      rtems_read_timer

#include "ttcp_orig/ttcp.c"