windows-nt-4.0/private/net/sockets/testutil/tnbf/tnbf.c

/*
 *      T N B F . C
 *
 * Test NBF connection.  Makes a connection on port 5001
 * and transfers fabricated buffers or data copied from stdin.
 *
 * Usable on 4.2, 4.3, and 4.1a systems by defining one of
 * BSD42 BSD43 (BSD41a)
 * Machines using System V with BSD sockets should define SYSV.
 *
 * Modified for operation under 4.2BSD, 18 Dec 84
 *      T.C. Slattery, USNA
 * Minor improvements, Mike Muuss and Terry Slattery, 16-Oct-85.
 * Modified in 1989 at Silicon Graphics, Inc.
 *      catch SIGPIPE to be able to print stats when receiver has died
 *      for tcp, don't look for sentinel during reads to allow small transfers
 *      increased default buffer size to 8K, nbuf to 2K to transfer 16MB
 *      moved default port to 5001, beyond IPPORT_USERRESERVED
 *      make sinkmode default because it is more popular,
 *              -s now means don't sink/source
 *      count number of _read/_write system calls to see effects of
 *              blocking from full socket buffers
 *      for tcp, -D option turns off buffered writes (sets SO_NODELAY sockopt)
 *      buffer alignment options, -A and -O
 *      print stats in a format that's a bit easier to use with grep & awk
 *      for SYSV, mimic BSD routines to use most of the existing timing code
 *
 * Distribution Status -
 *      Public Domain.  Distribution Unlimited.
 */
#ifndef lint
static char RCSid[] = "tnbf.c $Revision: 1.4 $";
#endif

#define BSD43
/* #define BSD42 */
/* #define BSD41a */
#if defined(sgi) || defined(CRAY)
#define SYSV
#endif

#include <stdio.h>
#include <stdlib.h>
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <io.h>
#include <signal.h>
#include <ctype.h>
#include <sys/types.h>
#include <winsock.h>
#include <wsnetbs.h>

#if defined(SYSV)
#include <sys/times.h>
#include <sys/param.h>
struct rusage {
    struct timeval ru_utime, ru_stime;
};
#define RUSAGE_SELF 0
#else
#endif

#define SO_NODELAY 0x200

struct sockaddr_nb snbme;
struct sockaddr_nb snbhim;
struct sockaddr_nb fromnb;

int domain, fromlen;
SOCKET fd;                      /* fd of network socket */

int buflen = 8 * 1024;          /* length of buffer */
char *buf;                      /* ptr to dynamic buffer */
int nbuf = 2 * 1024;            /* number of buffers to send in sinkmode */

int bufoffset = 0;              /* align buffer to this */
int bufalign = 16*1024;         /* modulo this */

int dg = 0;                     /* 0 = virtual circuit, !0 = datagram */
int options = 0;                /* socket options */
int one = 1;                    /* for 4.3 BSD style setsockopt() */
short port = 99;                /* endpoint number */
char *host;                     /* ptr to name of host */
int trans;                      /* 0=receive, !0=transmit mode */
int sinkmode = 1;               /* 0=normal I/O, !0=sink/source mode */
int verbose = 0;                /* 0=print basic info, 1=print cpu rate, proc
                                 * resource usage. */
int nodelay = 0;                /* set SO_NODELAY socket option */
int b_flag = 0;                 /* use mread() */

int dg_connect = 0;             /* connect DG sockets */

BYTE LocalName[NETBIOS_NAME_LENGTH];

WSADATA WsaData;

struct hostent *addr;

char Usage[] = "\
Usage: tnbf -t [-options] host [ < in ]\n\
       tnbf -r [-options > out]\n\
Common options:\n\
        -l##    length of bufs read from or written to network (default 8192)\n\
        -u      use datagrams instead of virtual circuits\n\
        -p##    port number to send to or listen at (default 5001)\n\
        -s      -t: don't source a pattern to network, get data from stdin\n\
                -r: don't sink (discard), print data on stdout\n\
        -A      align the start of buffers to this modulus (default 16384)\n\
        -O      start buffers at this offset from the modulus (default 0)\n\
        -v      verbose: print more statistics\n\
        -d      set SO_DEBUG socket option\n\
Options specific to -t:\n\
        -n##    number of source bufs written to network (default 2048)\n\
Options specific to -r:\n\
        -B      for -s, only output full blocks as specified by -l (for TAR)\n\
";

char stats[128];
unsigned long nbytes;           /* bytes on net */
unsigned long numCalls;         /* # of I/O system calls */

int Nread( SOCKET fd, PBYTE buf, INT count );
int mread( SOCKET fd, PBYTE bufp, INT n);
int Nwrite( SOCKET fd, PBYTE buf, INT count );

void err(char *s);
void mes(char *s);
void pattern(char *cp, int cnt );

void prep_timer();
double read_timer(char *s, int l);
//double cput, realt;             /* user, real time (seconds) */
DWORD realt;
DWORD processUserTime;
DWORD processKernelTime;
DWORD systemUserTime;
DWORD systemKernelTime;

#define bcopy(s, d, c)  memcpy((u_char *)(d), (u_char *)(s), (c))
#define bzero(d, l)     memset((d), '\0', (l))
#define bcmp(s1, s2, l) memcmp((s1), (s2), (l))

void
sigpipe()
{
}

void _CRTAPI1
main(argc,argv)
int argc;
char **argv;
{
        unsigned long addr_tmp;
        DWORD nameLength = sizeof(LocalName);
        int error;

        error = WSAStartup( 0x0101, &WsaData );
        if ( error == SOCKET_ERROR ) {
            printf("tnbf: WSAStartup failed %ld:", GetLastError());
        }

        error = GetComputerNameA( LocalName, &nameLength );
        if ( !error ) {
            printf( "GetComputerNameA failed: %ld\n", GetLastError( ) );
        }

        if (argc < 2) goto usage;

        argv++; argc--;
        while( argc>0 && argv[0][0] == '-' )  {
                switch (argv[0][1]) {

                case 'B':
                        b_flag = 1;
                        break;
                case 't':
                        trans = 1;
                        break;
                case 'r':
                        trans = 0;
                        break;
                case 'd':
                        options |= SO_DEBUG;
                        break;
                case 'D':
                        nodelay = 1;
                        break;
                case 'n':
                        nbuf = atoi(&argv[0][2]);
                        break;
                case 'l':
                        buflen = atoi(&argv[0][2]);
                        break;
                case 's':
                        sinkmode = 0;   /* sink/source data */
                        break;
                case 'p':
                        port = atoi(&argv[0][2]);
                        break;
                case 'u':
                        dg = 1;
                        break;
                case 'v':
                        verbose = 1;
                        break;
                case 'A':
                        bufalign = atoi(&argv[0][2]);
                        break;
                case 'O':
                        bufoffset = atoi(&argv[0][2]);
                        break;

                case 'c':
                        dg_connect = 1;
                        break;

                default:
                        goto usage;
                }
                argv++; argc--;
        }
        if(trans)  {
                char *s;
                /* xmitr */
                if (argc != 1) goto usage;
                /* upcase remote name */
                for ( s = argv[0]; *s != '\0'; s++ ) {
                    if ( islower( *s ) ) {
                        *s = toupper( *s );
                    }
                }
                SET_NETBIOS_SOCKADDR( &snbhim, 0, argv[0], port );
                SET_NETBIOS_SOCKADDR( &snbme, 0, LocalName, 254 );
        } else {
                /* rcvr */
                SET_NETBIOS_SOCKADDR( &snbme, 0, LocalName, port );
        }


        if (dg && buflen < 5) {
            buflen = 5;         /* send more than the sentinel size */
        }

        if ( (buf = (char *)malloc(buflen+bufalign)) == (char *)NULL)
                err("malloc");
        if (bufalign != 0)
                buf +=(bufalign - ((int)buf % bufalign) + bufoffset) % bufalign;

        if (trans) {
            fprintf(stdout,
            "tnbf-t: buflen=%d, nbuf=%d, align=%d/+%d, port=%d  %s  -> %s\n",
                buflen, nbuf, bufalign, bufoffset, port,
                dg?"dg":"vc",
                argv[0]);
        } else {
            fprintf(stdout,
            "tnbf-r: buflen=%d, nbuf=%d, align=%d/+%d, port=%d  %s\n",
                buflen, nbuf, bufalign, bufoffset, port,
                dg?"dg":"vc");
        }

        if ((fd = socket(AF_NETBIOS, dg?SOCK_DGRAM:SOCK_SEQPACKET, 0)) < 0)
                err("socket");
        mes("socket");

        if (bind(fd, (PSOCKADDR)&snbme, sizeof(snbme)) < 0)
                err("bind");

        if (!dg)  {
            //signal(SIGPIPE, sigpipe);
            if (trans) {
                /* We are the client if transmitting */
                if(options)  {
#if defined(BSD42)
                        if( setsockopt(fd, SOL_SOCKET, options, 0, 0) < 0)
#else // BSD43
                        if( setsockopt(fd, SOL_SOCKET, options, (char *)&one, sizeof(one)) < 0)
#endif
                                err("setsockopt");
                }
                if (nodelay) {
                        struct protoent *p;
                        if( p && setsockopt(fd, SOL_SOCKET, SO_NODELAY,
                            (char *)&one, sizeof(one)) < 0)
                                err("setsockopt: nodelay");
                        mes("nodelay not implemented");
                }
                if(connect(fd, (PSOCKADDR)&snbhim, sizeof(snbhim) ) < 0)
                        err("connect");
                mes("connect");
            } else {
                /* otherwise, we are the server and
                 * should listen for the connections
                 */
                listen(fd,0);   /* allow a queue of 0 */
                if(options)  {
#if defined(BSD42)
                        if( setsockopt(fd, SOL_SOCKET, options, 0, 0) < 0)
#else // BSD43
                        if( setsockopt(fd, SOL_SOCKET, options, (char *)&one, sizeof(one)) < 0)
#endif
                                err("setsockopt");
                }
                fromlen = sizeof(fromnb);
                domain = AF_NETBIOS;
                if((fd=accept(fd, (PSOCKADDR)&fromnb, &fromlen) ) < 0)
                        err("accept");
                { struct sockaddr_nb peer;
                  int peerlen = sizeof(peer);
                  if (getpeername(fd, (PSOCKADDR) &peer, &peerlen) < 0) {
                        err("getpeername");
                  }
                  fprintf(stderr,"tnbf-r: accept from %s\n",peer.snb_name);
                }
            }
        } else if (dg_connect && trans) {
            if(connect(fd, (PSOCKADDR)&snbhim, sizeof(snbhim) ) < 0)
                    err("connect");
            mes("connect");
        } else if (!trans) {
            int arg = 65536;
            if ( setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *)&arg, sizeof(arg)) < 0 ) {
                err("setsockopt(SO_RCVBUF)");
            }
        }
        prep_timer();
        if (sinkmode) {
                register int cnt;
                if (trans)  {
                        pattern( buf, buflen );
                        if(dg)  (void)Nwrite( fd, buf, 4 ); /* rcvr start */
                        while (nbuf-- && Nwrite(fd,buf,buflen) == buflen)
                                nbytes += buflen;
                        if(dg)  {
                            Sleep( 10 );
                            (void)Nwrite( fd, buf, 4 ); /* rcvr end */
                        }
                } else {
                        if (dg) {
                            while ((cnt=Nread(fd,buf,buflen)) > 0)  {
                                    static int going = 0;
                                    if( cnt <= 4 )  {
                                            if( going ) {
                                                    break;      /* "EOF" */
                                            }
                                            going = 1;
                                            prep_timer();
                                    } else {
                                            nbytes += cnt;
                                    }
                            }
                        } else {
                            while ((cnt=Nread(fd,buf,buflen)) > 0)  {
                                    nbytes += cnt;
                            }
                        }
                }
        } else {
                register int cnt;
                if (trans)  {
                        while((cnt=_read(0,buf,buflen)) > 0 &&
                            Nwrite(fd,buf,cnt) == cnt)
                                nbytes += cnt;
                }  else  {
                        while((cnt=Nread(fd,buf,buflen)) > 0 &&
                            _write(1,buf,cnt) == cnt)
                                nbytes += cnt;
                }
        }
        //if(errno) err("IO");
        (void)read_timer(stats,sizeof(stats));
        if(dg&&trans)  {
                (void)Nwrite( fd, buf, 4 ); /* rcvr end */
                (void)Nwrite( fd, buf, 4 ); /* rcvr end */
                (void)Nwrite( fd, buf, 4 ); /* rcvr end */
                (void)Nwrite( fd, buf, 4 ); /* rcvr end */
        }
        closesocket(fd);
        //if( cput <= 0.0 )  cput = 0.001;
        if( realt <= 1000 )  realt = 1000;
        fprintf(stdout,
                "tnbf%s: %ld bytes in %ld real milliseconds = %ld KB/sec +++\n",
                trans?"-t":"-r",
                nbytes, realt, nbytes/(realt/1000)/1024 );
        //if (verbose) {
        //    fprintf(stdout,
        //        "tnbf%s: %ld bytes in %.2f CPU seconds = %.2f KB/cpu sec\n",
        //        trans?"-t":"-r",
        //        nbytes, cput, ((double)nbytes)/cput/1024 );
        //}
        fprintf(stdout,
                "tnbf%s: %d I/O calls, msec/call = %ld, calls/sec = %ld\n",
                trans?"-t":"-r",
                numCalls,
                realt/numCalls,
                numCalls/(realt/1000));
        //fprintf(stdout,"tnbf%s: %s\n", trans?"-t":"-r", stats);
        fprintf(stdout,"tnbf%s: system CPU %ld%%, User %ld%%, Kernel %ld%%, User/Kernel ratio %ld%%\n",
                trans?"-t":"-r",
                ((systemUserTime+systemKernelTime)*100+50)/realt,
                (systemUserTime*100+50)/realt,
                (systemKernelTime*100+50)/realt,
                (systemUserTime*100+50)/(systemUserTime+systemKernelTime));
        fprintf(stdout,"tnbf%s: process CPU %ld%%, User %ld%%, Kernel %ld%%, User/Kernel ratio %ld%%\n",
                trans?"-t":"-r",
                ((processUserTime+processKernelTime)*100+50)/realt,
                (processUserTime*100+50)/realt,
                (processKernelTime*100+50)/realt,
                (processUserTime*100+50)/(processUserTime+processKernelTime));
        if (verbose) {
            fprintf(stdout,
                "tnbf%s: buffer address %#x\n",
                trans?"-t":"-r",
                buf);
        }
        exit(0);

usage:
        fprintf(stderr,Usage);
        exit(1);
}

void err(s)
char *s;
{
        fprintf(stderr,"tnbf%s: ", trans?"-t":"-r");
        perror(s);
        fprintf(stderr,"errno=%d\n",WSAGetLastError( ));
        exit(1);
}

void mes(s)
char *s;
{
        fprintf(stderr,"tnbf%s: %s\n", trans?"-t":"-r", s);
}

void pattern( cp, cnt )
register char *cp;
register int cnt;
{
        register char c;
        c = 0;
        while( cnt-- > 0 )  {
                while( !isprint((c&0x7F)) )  c++;
                *cp++ = (c++&0x7F);
        }
}


static void prusage();
static void tvadd();
static void tvsub();
static void psecs();

#if defined(SYSV)
/*ARGSUSED*/
static
getrusage(ignored, ru)
    int ignored;
    register struct rusage *ru;
{
    struct tms buf;

    times(&buf);

    /* Assumption: HZ <= 2147 (LONG_MAX/1000000) */
    ru->ru_stime.tv_sec  = buf.tms_stime / HZ;
    ru->ru_stime.tv_usec = ((buf.tms_stime % HZ) * 1000000) / HZ;
    ru->ru_utime.tv_sec  = buf.tms_utime / HZ;
    ru->ru_utime.tv_usec = ((buf.tms_utime % HZ) * 1000000) / HZ;
}

#if !defined(sgi)
/*ARGSUSED*/
static
gettimeofday(tp, zp)
    struct timeval *tp;
    struct timezone *zp;
{
    tp->tv_sec = time(0);
    tp->tv_usec = 0;
}
#endif
#endif // SYSV

LARGE_INTEGER time0;
SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION systemPerfInfo0;
KERNEL_USER_TIMES processPerfInfo0;
LARGE_INTEGER time1;
SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION systemPerfInfo1;
KERNEL_USER_TIMES processPerfInfo1;

/*
 *                      P R E P _ T I M E R
 */
void
prep_timer()
{
    NTSTATUS status;

    //gettimeofday(&time0, (struct timezone *)0);
    //getrusage(RUSAGE_SELF, &ru0);

    status = NtQuerySystemTime( &time0 );
    if ( !NT_SUCCESS(status) ) {
        printf( "NtQuerySystemTime failed: %X\n", status );
        exit(1);
    }

    status = NtQuerySystemInformation (
                SystemProcessorPerformanceInformation,
                &systemPerfInfo0,
                sizeof(systemPerfInfo0),
                NULL
                );
    if ( !NT_SUCCESS(status) ) {
        printf( "NtQuerySystemInformation failed: %X\n", status );
        exit(1);
    }

    status = NtQueryInformationProcess(
                 NtCurrentProcess( ),
                 ProcessTimes,
                 &processPerfInfo0,
                 sizeof(processPerfInfo0),
                 NULL
                 );
    if ( !NT_SUCCESS(status) ) {
        printf( "NtQueryInformationProcess failed: %X\n", status );
        exit(1);
    }

}

/*
 *                      R E A D _ T I M E R
 *
 */
double
read_timer(str,len)
char *str;
int len;
{
#if 0
    char line[132];

    getrusage(RUSAGE_SELF, &ru1);
    gettimeofday(&timedol, (struct timezone *)0);
    prusage(&ru0, &ru1, &timedol, &time0, line);
    (void)strncpy( str, line, len );

    /* Get real time */
    tvsub( &td, &timedol, &time0 );
    realt = td.tv_sec + ((double)td.tv_usec) / 1000000;

    /* Get CPU time (user+sys) */
    tvadd( &tend, &ru1.ru_utime, &ru1.ru_stime );
    tvadd( &tstart, &ru0.ru_utime, &ru0.ru_stime );
    tvsub( &td, &tend, &tstart );
    cput = td.tv_sec + ((double)td.tv_usec) / 1000000;
    if( cput < 0.00001 )  cput = 0.00001;
    return( cput );
#endif

    NTSTATUS status;
    LARGE_INTEGER result, result2;
    ULONG dummy;

    status = NtQuerySystemTime( &time1 );
    if ( !NT_SUCCESS(status) ) {
        printf( "NtQuerySystemTime failed: %X\n", status );
        exit(1);
    }

    status = NtQuerySystemInformation (
                SystemProcessorPerformanceInformation,
                &systemPerfInfo1,
                sizeof(systemPerfInfo1),
                NULL
                );
    if ( !NT_SUCCESS(status) ) {
        printf( "NtQuerySystemInformation failed: %X\n", status );
        exit(1);
    }

    status = NtQueryInformationProcess(
                 NtCurrentProcess( ),
                 ProcessTimes,
                 &processPerfInfo1,
                 sizeof(processPerfInfo1),
                 NULL
                 );
    if ( !NT_SUCCESS(status) ) {
        printf( "NtQueryInformationProcess failed: %X\n", status );
        exit(1);
    }

    result = RtlLargeIntegerSubtract( time1, time0 );
    result = RtlExtendedLargeIntegerDivide( result, 10*1000, &dummy );
    if ( result.HighPart != 0 ) {
        printf( "result 1 high part == %ld\n", result.HighPart );
    }
    realt = result.LowPart;

    result = RtlLargeIntegerSubtract( systemPerfInfo1.UserTime, systemPerfInfo0.UserTime );
    result = RtlExtendedLargeIntegerDivide( result, 10*1000, &dummy );
    if ( result.HighPart != 0 ) {
        printf( "result 2 high part == %ld\n", result.HighPart );
    }
    systemUserTime = result.LowPart;

    result = RtlLargeIntegerSubtract( systemPerfInfo1.KernelTime, systemPerfInfo0.KernelTime );
    result2 = RtlLargeIntegerSubtract( systemPerfInfo1.IdleTime, systemPerfInfo0.IdleTime );
    result = RtlLargeIntegerSubtract( result, result2 );
    result = RtlExtendedLargeIntegerDivide( result, 10*1000, &dummy );
    if ( result.HighPart != 0 ) {
        printf( "result 3 high part == %ld\n", result.HighPart );
    }
    systemKernelTime = result.LowPart;

    result = RtlLargeIntegerSubtract( processPerfInfo1.UserTime, processPerfInfo0.UserTime );
    result = RtlExtendedLargeIntegerDivide( result, 10*1000, &dummy );
    if ( result.HighPart != 0 ) {
        printf( "result 4 high part == %ld\n", result.HighPart );
    }
    processUserTime = result.LowPart;

    result = RtlLargeIntegerSubtract( processPerfInfo1.KernelTime, processPerfInfo0.KernelTime );
    result = RtlExtendedLargeIntegerDivide( result, 10*1000, &dummy );
    if ( result.HighPart != 0 ) {
        printf( "result 5 high part == %ld\n", result.HighPart );
    }
    processKernelTime = result.LowPart;

    return 0;
}

#if 0
static void
prusage(r0, r1, e, b, outp)
        register struct rusage *r0, *r1;
        struct timeval *e, *b;
        char *outp;
{
        struct timeval tdiff;
        register time_t t;
        register char *cp;
        register int i;
        int ms;

        t = (r1->ru_utime.tv_sec-r0->ru_utime.tv_sec)*100+
            (r1->ru_utime.tv_usec-r0->ru_utime.tv_usec)/10000+
            (r1->ru_stime.tv_sec-r0->ru_stime.tv_sec)*100+
            (r1->ru_stime.tv_usec-r0->ru_stime.tv_usec)/10000;
        ms =  (e->tv_sec-b->tv_sec)*100 + (e->tv_usec-b->tv_usec)/10000;

#define END(x)  {while(*x) x++;}
#if defined(SYSV)
        cp = "%Uuser %Zsys %Ereal %P";
#else
        cp = "%Uuser %Zsys %Ereal %P %Xi+%Dd %Mmaxrss %F+%Rpf %Xcsw";
#endif
        for (; *cp; cp++)  {
                if (*cp != '%')
                        *outp++ = *cp;
                else if (cp[1]) switch(*++cp) {

                case 'U':
                        tvsub(&tdiff, &r1->ru_utime, &r0->ru_utime);
                        sprintf(outp,"%d.%01d", tdiff.tv_sec, tdiff.tv_usec/100000);
                        END(outp);
                        break;

                case 'S':
                        tvsub(&tdiff, &r1->ru_stime, &r0->ru_stime);
                        sprintf(outp,"%d.%01d", tdiff.tv_sec, tdiff.tv_usec/100000);
                        END(outp);
                        break;

                case 'E':
                        psecs(ms / 100, outp);
                        END(outp);
                        break;

                case 'P':
                        sprintf(outp,"%d%%", (int) (t*100 / ((ms ? ms : 1))));
                        END(outp);
                        break;

#if !defined(SYSV)
                case 'W':
                        i = r1->ru_nswap - r0->ru_nswap;
                        sprintf(outp,"%d", i);
                        END(outp);
                        break;

                case 'X':
                        sprintf(outp,"%d", t == 0 ? 0 : (r1->ru_ixrss-r0->ru_ixrss)/t);
                        END(outp);
                        break;

                case 'D':
                        sprintf(outp,"%d", t == 0 ? 0 :
                            (r1->ru_idrss+r1->ru_isrss-(r0->ru_idrss+r0->ru_isrss))/t);
                        END(outp);
                        break;

                case 'K':
                        sprintf(outp,"%d", t == 0 ? 0 :
                            ((r1->ru_ixrss+r1->ru_isrss+r1->ru_idrss) -
                            (r0->ru_ixrss+r0->ru_idrss+r0->ru_isrss))/t);
                        END(outp);
                        break;

                case 'M':
                        sprintf(outp,"%d", r1->ru_maxrss/2);
                        END(outp);
                        break;

                case 'F':
                        sprintf(outp,"%d", r1->ru_majflt-r0->ru_majflt);
                        END(outp);
                        break;

                case 'R':
                        sprintf(outp,"%d", r1->ru_minflt-r0->ru_minflt);
                        END(outp);
                        break;

                case 'I':
                        sprintf(outp,"%d", r1->ru_inblock-r0->ru_inblock);
                        END(outp);
                        break;

                case 'O':
                        sprintf(outp,"%d", r1->ru_oublock-r0->ru_oublock);
                        END(outp);
                        break;
                case 'C':
                        sprintf(outp,"%d+%d", r1->ru_nvcsw-r0->ru_nvcsw,
                                r1->ru_nivcsw-r0->ru_nivcsw );
                        END(outp);
                        break;
#endif !SYSV
                }
        }
        *outp = '\0';
}
#endif

static void
tvadd(tsum, t0, t1)
        struct timeval *tsum, *t0, *t1;
{

        tsum->tv_sec = t0->tv_sec + t1->tv_sec;
        tsum->tv_usec = t0->tv_usec + t1->tv_usec;
        if (tsum->tv_usec > 1000000)
                tsum->tv_sec++, tsum->tv_usec -= 1000000;
}

static void
tvsub(tdiff, t1, t0)
        struct timeval *tdiff, *t1, *t0;
{

        tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
        tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
        if (tdiff->tv_usec < 0)
                tdiff->tv_sec--, tdiff->tv_usec += 1000000;
}

#if 0
static void
psecs(l,cp)
long l;
register char *cp;
{
        register int i;

        i = l / 3600;
        if (i) {
                sprintf(cp,"%d:", i);
                END(cp);
                i = l % 3600;
                sprintf(cp,"%d%d", (i/60) / 10, (i/60) % 10);
                END(cp);
        } else {
                i = l;
                sprintf(cp,"%d", i / 60);
                END(cp);
        }
        i %= 60;
        *cp++ = ':';
        sprintf(cp,"%d%d", i / 10, i % 10);
}
#endif

/*
 *                      N R E A D
 */
int
Nread( SOCKET fd, PBYTE buf, INT count )
{
        int len = sizeof(snbhim);
        register int cnt;
        if( dg )  {
            if (dg_connect) {
                cnt = recv( fd, buf, count, 0 );
                numCalls++;
            } else {
                cnt = recvfrom( fd, buf, count, 0, (PSOCKADDR)&snbhim, &len );
                numCalls++;
            }
        } else {
                if( b_flag )
                        cnt = mread( fd, buf, count );  /* fill buf */
                else {
                        cnt = recv( fd, buf, count, 0 );
                        numCalls++;
                }
        }
        if (cnt<0) {
            printf( "recv(from) failed: %ld\n", WSAGetLastError( ) );
        }
        return(cnt);
}

/*
 *                      N W R I T E
 */
int
Nwrite( SOCKET fd, PBYTE buf, INT count )
{
        register int cnt;
        if( dg && !dg_connect)  {
again:
                cnt = sendto( fd, buf, count, 0, (PSOCKADDR)&snbhim, sizeof(snbhim) );
                numCalls++;
                if( cnt<0 && WSAGetLastError( ) == WSAENOBUFS )  {
                        Sleep(18000);
                        goto again;
                }
        } else {
                cnt = send( fd, buf, count, 0 );
                numCalls++;
        }
        if (cnt<0) {
            printf( "send(to) failed: %ld\n", WSAGetLastError( ) );
        }
        return(cnt);
}

/*
 *                      M R E A D
 *
 * This function performs the function of a read(II) but will
 * call read(II) multiple times in order to get the requested
 * number of characters.  This can be necessary because
 * network connections don't deliver data with the same
 * grouping as it is written with.  Written by Robert S. Miles, BRL.
 */
int
mread( SOCKET fd, PBYTE bufp, INT n)
{
        register unsigned       count = 0;
        register int            nread;

        do {
                nread = recv(fd, bufp, n-count, 0);
                numCalls++;
                if(nread < 0)  {
                        if (count<0) {
                            printf( "recv failed: %ld\n", WSAGetLastError( ) );
                        }
                        return(-1);
                }
                if(nread == 0)
                        return((int)count);
                count += (unsigned)nread;
                bufp += nread;
         } while(count < n);

        return((int)count);
}