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1060 lines
25 KiB
C
Executable File

/*
* T T C P . C
*
* Test TCP connection. Makes a connection on port 5013
* 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 5013, 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 TCP_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
* Modified by Steve Miller of the University of Maryland, College Park
* -b sets the socket buffer size (SO_SNDBUF/SO_RCVBUF)
* Modified Sept. 1989 at Silicon Graphics, Inc.
* restored -s sense at request of tcs@brl
* Modified Oct. 1991 at Silicon Graphics, Inc.
* use getopt(3) for option processing, add -f and -T options.
* SGI IRIX 3.3 and 4.0 releases don't need #define SYSV.
* Modified April 1994 by John Lin (lin@cs.purdue.edu)
* Add CPU_USAGE complier option and move the "gettimeofday" calls.
* Heavily modified since 1995 by Werner Almesberger, EPFL ICA
* Various ATM-related changes
*
* Distribution Status -
* Public Domain. Distribution Unlimited.
*/
#ifndef lint
static char RCSid[] = "ttcp.c $Revision: #1 $";
#endif
/*#define CPU_USAGE*/ /* print out CPU usage numbers? */
#define BSD43
/* #define BSD42 */
/* #define BSD41a */
/* #define SYSV */ /* required on SGI IRIX releases before 3.3 */
#include <stdio.h>
#include <signal.h>
#include <ctype.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/time.h> /* struct timeval */
#include <atm.h>
#include <atmsap.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
#include <sys/resource.h>
#endif
struct sockaddr_in sinme;
struct sockaddr_in sinhim;
struct sockaddr_in frominet;
struct sockaddr_atmsvc satm;
struct atm_qos qos;
int domain, fromlen;
int 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 atm = 0; /* 0 = INET, !0 = ATM */
int pcr = 0;
char *qos_spec = NULL;
int udp = 0; /* 0 = tcp, !0 = udp */
int options = 0; /* socket options */
int one = 1; /* for 4.3 BSD style setsockopt() */
unsigned short port = 5013; /* TCP port number */
char *host; /* ptr to name of host */
int trans; /* 0=receive, !0=transmit mode */
int sinkmode = 0; /* 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 TCP_NODELAY socket option */
int b_flag = 0; /* use mread() */
int sockbufsize = 0; /* socket buffer size to use */
char fmt = 'K'; /* output format: k = kilobits, K = kilobytes,
* m = megabits, M = megabytes,
* g = gigabits, G = gigabytes */
int touchdata = 0; /* access data after reading */
static struct timeval start_time; /* Time at which timing started */
static struct timeval stop_time; /* Time at which timing stopped */
static struct rusage ru0; /* Resource utilization at the start */
struct hostent *addr;
extern int errno;
extern int optind;
extern char *optarg;
char Usage[] = "\
Usage: ttcp -t [-options] host [ < in ]\n\
ttcp -r [-options > out]\n\
Common options:\n\
-l ## length of bufs read from or written to network (default 8192)\n\
-u use UDP instead of TCP\n\
-p ## port number to send to or listen at (default 5001)\n\
-s -t: source a pattern to network\n\
-r: sink (discard) all data from network\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\
-b ## set socket buffer size (if supported)\n\
-f X format for rate: k,K = kilo{bit,byte}; m,M = mega; g,G = giga\n\
-a use native ATM instead of UDP/TCP\n\
Options specific to -t:\n\
-n## number of source bufs written to network (default 2048)\n\
-D don't buffer TCP writes (sets TCP_NODELAY socket option)\n\
-C disable (UDP) checksums\n\
-P X use the specified QOS for the ATM connection. If X is only\n\
a number, the following QOS spec is assumed: cbr:pcr=X\n\
-S X use the specified value for the TOS byte. Without -S, the\n\
system default is used.\n\
Options specific to -r:\n\
-B for -s, only output full blocks as specified by -l (for TAR)\n\
-T \"touch\": access each byte as it's read\n\
";
char stats[128];
double nbytes; /* bytes on net */
unsigned long numCalls; /* # of I/O system calls */
double cput, realt; /* user, real time (seconds) */
void err();
void mes();
int pattern();
void prep_timer();
double read_timer();
int Nread();
int Nwrite();
void delay();
int mread();
char *outfmt();
static void prusage();
static void tvadd();
static void tvsub();
static void psecs();
void
sigpipe()
{
}
/*-------------------------------------------------------------------------
* main -
*-------------------------------------------------------------------------
*/
main(argc,argv)
int argc;
char **argv;
{
struct timeval td;
unsigned long addr_tmp;
const char *port_name = NULL,*tos = NULL;
int c;
double mbps;
int no_check = 0;
if (argc < 2) goto usage;
while ((c = getopt(argc, argv, "adrstuvBDTb:f:l:n:p:P:S:A:O:C")) != -1) {
switch (c) {
case 'a':
atm = udp = 1;
break;
case 'B':
b_flag = 1;
break;
case 't':
trans = 1;
break;
case 'r':
trans = 0;
break;
case 'C':
no_check = 1;
break;
case 'd':
options |= SO_DEBUG;
break;
case 'D':
#ifdef TCP_NODELAY
nodelay = 1;
#else
fprintf(stderr,
"ttcp: -D option ignored: TCP_NODELAY socket option not supported\n");
#endif
break;
case 'n':
nbuf = atoi(optarg);
break;
case 'l':
buflen = atoi(optarg);
break;
case 's':
sinkmode = !sinkmode;
break;
case 'p':
port_name = optarg;
break;
case 'P':
qos_spec = optarg;
break;
case 'S':
tos = optarg;
break;
case 'u':
udp = 1;
break;
case 'v':
verbose = 1;
break;
case 'A':
bufalign = atoi(optarg);
break;
case 'O':
bufoffset = atoi(optarg);
break;
case 'b':
#if defined(SO_SNDBUF) || defined(SO_RCVBUF)
sockbufsize = atoi(optarg);
#else
fprintf(stderr,
"ttcp: -b option ignored: SO_SNDBUF/SO_RCVBUF socket options not supported\n");
#endif
break;
case 'f':
fmt = *optarg;
break;
case 'T':
touchdata = 1;
break;
default:
goto usage;
}
}
if (port_name)
if (atm) goto usage;
else {
struct servent *se;
se = getservbyname(port_name,udp ? "udp" : "tcp");
if (se) port = ntohs(se->s_port);
else {
const char *end;
port = strtoul(port_name,&end,0);
if (*end) goto usage;
}
}
host = argv[optind];
if (atm) {
char *end;
memset(&satm,0,sizeof(satm));
if (!host) satm.sas_family = AF_ATMSVC;
else if (text2atm(host,(struct sockaddr *) &satm,
sizeof(satm),T2A_PVC | T2A_SVC | T2A_NAME) < 0) {
fprintf(stderr,"invalid ATM address (PVC or SVC expected)\n");
exit(1);
}
memset(&qos,0,sizeof(qos));
qos.rxtp.max_sdu = qos.txtp.max_sdu = buflen;
if (qos_spec && ((pcr = strtol(qos_spec,&end,10)), *end)) {
if (text2qos(qos_spec,&qos,T2Q_DEFAULTS) < 0) {
fprintf(stderr,"invalid QOS specification\n");
exit(1);
}
}
else {
if (!qos_spec) pcr = 0;
if (!trans) qos.rxtp.traffic_class = ATM_UBR;
else if (!pcr) qos.txtp.traffic_class = ATM_UBR;
else {
qos.txtp.traffic_class = ATM_CBR;
qos.txtp.max_pcr = pcr;
}
}
if (!qos.aal) qos.aal = ATM_AAL5;
}
if (!atm && trans) {
/* xmitr */
if (optind == argc)
goto usage;
bzero((char *)&sinhim, sizeof(sinhim));
if (atoi(host) > 0 ) {
/* Numeric */
sinhim.sin_family = AF_INET;
#if defined(cray)
addr_tmp = inet_addr(host);
sinhim.sin_addr = addr_tmp;
#else
sinhim.sin_addr.s_addr = inet_addr(host);
#endif
} else {
if ((addr=gethostbyname(host)) == NULL)
err("bad hostname");
sinhim.sin_family = addr->h_addrtype;
bcopy(addr->h_addr,(char*)&addr_tmp, addr->h_length);
#if defined(cray)
sinhim.sin_addr = addr_tmp;
#else
sinhim.sin_addr.s_addr = addr_tmp;
#endif /* cray */
}
sinhim.sin_port = htons(port);
sinme.sin_port = 0; /* free choice */
} else {
/* rcvr */
sinme.sin_port = htons(port);
}
if (udp && 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,
"ttcp-t: buflen=%d, nbuf=%d, align=%d/%d, port=%d",
buflen, nbuf, bufalign, bufoffset, port);
if (sockbufsize)
fprintf(stdout, ", sockbufsize=%d", sockbufsize);
fprintf(stdout, " %s -> %s\n", atm?"atm":udp?"udp":"tcp", host);
} else {
fprintf(stdout,
"ttcp-r: buflen=%d, nbuf=%d, align=%d/%d, port=%d",
buflen, nbuf, bufalign, bufoffset, port);
if (sockbufsize)
fprintf(stdout, ", sockbufsize=%d", sockbufsize);
fprintf(stdout, " %s\n", atm?"atm":udp?"udp":"tcp");
}
if ((fd = socket(atm ? satm.sas_family : AF_INET,
udp?SOCK_DGRAM:SOCK_STREAM,0)) < 0) err("socket");
mes("socket");
if (atm) {
if (setsockopt(fd,SOL_ATM,SO_ATMQOS,&qos,sizeof(qos)) < 0)
err("setsockopt SO_ATMQOS");
}
else if (setsockopt(fd, SOL_SOCKET, SO_NO_CHECK, &no_check, sizeof(long)) <
0) err("setsockopt: no_check");
#ifdef SO_ATMSAP
if (atm && satm.sas_family == AF_ATMSVC) {
struct atm_sap sap;
memset(&sap,0,sizeof(sap));
sap.bhli.hl_type = ATM_HL_VENDOR;
sap.bhli.hl_length = 7;
memcpy(sap.bhli.hl_info,TTCP_HLT_VS_ID,7);
if (setsockopt(fd,SOL_ATM,SO_ATMSAP,&sap,sizeof(sap)) < 0)
err("setsockopt SO_ATMSAP");
}
#endif
/* set socket buffer size */
#if defined(SO_SNDBUF) || defined(SO_RCVBUF)
if (sockbufsize) {
int len;
if (trans) {
/* set send socket buffer if we are transmitting */
if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sockbufsize,
sizeof sockbufsize) < 0)
err("setsockopt: sndbuf");
len = sizeof sockbufsize;
if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sockbufsize, &len) < 0)
perror("getsockopt: sndbuf");
mes("sndbuf");
} else {
/* set receive socket buffer if we are receiving */
if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &sockbufsize,
sizeof sockbufsize) < 0)
err("setsockopt: rcvbuf");
len = sizeof sockbufsize;
if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &sockbufsize, &len) < 0)
perror("getsockopt: rcvbuf");
mes("rcvbuf");
}
printf("real buffer size = %d\n",sockbufsize);
}
#endif
if (!atm || satm.sas_family == AF_ATMPVC || !trans)
if (bind(fd, atm ? &satm : &sinme, atm ? satm.sas_family == AF_ATMPVC ?
sizeof(struct sockaddr_atmpvc) : sizeof(struct sockaddr_atmsvc) :
sizeof(sinme)) < 0)
err("bind");
if (!udp || (atm && satm.sas_family == AF_ATMSVC)) {
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, &one, sizeof(one)) < 0)
#endif
err("setsockopt");
}
if (connect(fd, atm ? &satm : &sinhim, atm ? sizeof(satm) :
sizeof(sinhim)) < 0)
err("connect");
mes("connect");
#ifdef TCP_NODELAY
if (nodelay) {
struct protoent *p;
p = getprotobyname("tcp");
if( p && setsockopt(fd, p->p_proto, TCP_NODELAY,
&one, sizeof(one)) < 0)
err("setsockopt: nodelay");
mes("nodelay");
}
if (atm) sleep(1); /* grr ... */
#endif
} else {
/* otherwise, we are the server and
* should listen for the connections
*/
#if defined(ultrix) || defined(sgi) || 1
listen(fd,1); /* workaround for alleged u4.2 bug */
#else
listen(fd,0); /* allow a queue of 0 */
#endif
fromlen = sizeof(frominet);
domain = AF_INET;
if ((fd=accept(fd, &frominet, &fromlen) ) < 0)
err("accept");
{
struct sockaddr_atmsvc peer;
int peerlen = sizeof(peer);
if (getpeername(fd, (struct sockaddr_in *) &peer,
&peerlen) < 0) {
err("getpeername");
}
if (atm) {
char name[MAX_ATM_ADDR_LEN+1];
if (atm2text(name,MAX_ATM_ADDR_LEN+1,(struct sockaddr *)
&peer,A2T_NAME | A2T_PRETTY) < 0)
strcpy(name,"<invalid>");
fprintf(stderr,"ttcp-r: accept from %s\n",name);
}
else fprintf(stderr,"ttcp-r: accept from %s\n",
inet_ntoa(((struct sockaddr_in *) &peer)->
sin_addr));
}
if (options) {
#if defined(BSD42)
if (setsockopt(fd, SOL_SOCKET, options, 0, 0) < 0)
#else /* BSD43 */
if (setsockopt(fd, SOL_SOCKET, options, &one, sizeof(one)) < 0)
#endif
err("setsockopt");
}
}
}
if (tos) {
unsigned char tos_value;
tos_value = strtoul(tos,NULL,0);
if (setsockopt(fd,SOL_IP,IP_TOS,&tos_value,1) < 0)
err("setsockopt IP_TOS");
}
errno = 0;
if (sinkmode) {
register int cnt;
if (trans) {
pattern(buf, buflen); /* construct a data pattern */
if (udp)
(void)Nwrite(fd, buf, 4); /* rcvr start */
#ifdef CPU_USAGE
prep_timer(); /* start timer */
#else
gettimeofday(&start_time, (struct timezone *)0);
#endif
while (nbuf-- && Nwrite(fd, buf, buflen) == buflen)
nbytes += buflen;
if (udp)
(void)Nwrite(fd, buf, 4); /* rcvr end */
}
else { /* receive mode */
if (udp) {
while ((cnt = Nread(fd, buf, buflen)) > 0) {
static int going = 0;
if(cnt <= 4) {
if (going)
break; /* "EOF" */
going = 1;
#ifdef CPU_USAGE
prep_timer(); /* start timer */
#else
gettimeofday(&start_time, (struct timezone *)0);
#endif
prep_timer();
} else {
nbytes += cnt;
}
}
}
else { /* TCP */
#ifdef CPU_USAGE
prep_timer(); /* start timer */
#else
gettimeofday(&start_time, (struct timezone *)0);
#endif
while ((cnt=Nread(fd,buf,buflen)) > 0) {
nbytes += cnt;
}
}
}
} else { /* not sink mode */
register int cnt;
#ifdef CPU_USAGE
prep_timer(); /* start timer */
#else
gettimeofday(&start_time, (struct timezone *)0);
#endif
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");
/* if TCP close the connection to make sure all the data sent */
if (!udp)
close(fd);
gettimeofday(&stop_time, (struct timezone *)0);
/* Get real time */
tvsub(&td, &stop_time, &start_time);
realt = (double)td.tv_sec + ((double)td.tv_usec / (double)1000000.0);
#ifdef CPU_USAGE
(void) read_timer(stats, sizeof(stats)); /* stop timer */
#endif
if (udp && trans) {
(void)Nwrite(fd, buf, 4); /* signal rcvr end */
(void)Nwrite(fd, buf, 4); /* rcvr end */
(void)Nwrite(fd, buf, 4); /* rcvr end */
(void)Nwrite(fd, buf, 4); /* rcvr end */
}
if (cput <= 0.0)
cput = 0.001;
if (realt <= 0.0)
realt = 0.001;
mbps = (double)(nbytes * 8) / realt / 1000000.0;
fprintf(stdout,
"ttcp%s: %.0f bytes in %f real seconds = %s/sec (%f Mb/sec)\n",
trans?"-t":"-r",
nbytes, realt, outfmt((double)nbytes/realt), mbps);
#ifdef CPU_USAGE
fprintf(stdout,"ttcp%s: %s\n", trans?"-t":"-r", stats);
#endif
if (verbose) {
fprintf(stdout,
"ttcp%s: %.0f bytes in %.2f CPU seconds = %s/cpu sec\n",
trans?"-t":"-r",
nbytes, cput, outfmt((double)nbytes/cput));
fprintf(stdout,
"ttcp%s: %d I/O calls, msec/call = %.2f, calls/sec = %.2f\n",
trans?"-t":"-r",
numCalls,
1000.0 * realt/((double)numCalls),
((double)numCalls)/realt);
fprintf(stdout,
"ttcp%s: buffer address %#x\n",
trans?"-t":"-r",
buf);
}
exit(0);
usage:
fprintf(stderr, Usage);
exit(1);
}
void
err(s)
char *s;
{
int en = errno;
fprintf(stderr,"ttcp%s: ", trans?"-t":"-r");
errno = en;
perror(s);
errno = en;
fprintf(stderr,"errno=%d\n",errno);
exit(1);
}
void
mes(s)
char *s;
{
fprintf(stderr,"ttcp%s: %s\n", trans?"-t":"-r", s);
}
/*-------------------------------------------------------------------------
* pattern -
*-------------------------------------------------------------------------
*/
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);
}
}
char *
outfmt(b)
double b;
{
static char obuf[50];
switch (fmt) {
case 'G':
sprintf(obuf, "%f GB", b / 1024.0 / 1024.0 / 1024.0);
break;
default:
case 'K':
sprintf(obuf, "%f KB", b / 1024.0);
break;
case 'M':
sprintf(obuf, "%f MB", b / 1024.0 / 1024.0);
break;
case 'g':
sprintf(obuf, "%f Gbit", b * 8.0 / 1024.0 / 1024.0 / 1024.0);
break;
case 'k':
sprintf(obuf, "%f Kbit", b * 8.0 / 1024.0);
break;
case 'm':
sprintf(obuf, "%f Mbit", b * 8.0 / 1024.0 / 1024.0);
break;
}
return obuf;
}
#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;
}
/*ARGSUSED*/
static
gettimeofday(tp, zp)
struct timeval *tp;
struct timezone *zp;
{
tp->tv_sec = time(0);
tp->tv_usec = 0;
}
#endif /* SYSV */
/*
* P R E P _ T I M E R
*/
void
prep_timer()
{
gettimeofday(&start_time, (struct timezone *)0);
getrusage(RUSAGE_SELF, &ru0);
}
/*-------------------------------------------------------------------------
* read_timer -
*-------------------------------------------------------------------------
*/
double read_timer(str,len)
char *str;
{
struct rusage ru1;
struct timeval tend, tstart, td;
char line[132];
getrusage(RUSAGE_SELF, &ru1);
prusage(&ru0, &ru1, &stop_time, &start_time, line);
(void)strncpy( str, line, len );
/* 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 );
}
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 %Ssys %Ereal %P";
#else
#if defined(sgi) /* IRIX 3.3 will show 0 for %M,%F,%R,%C */
cp = "%Uuser %Ssys %Ereal %P %Mmaxrss %F+%Rpf %Ccsw";
#else
cp = "%Uuser %Ssys %Ereal %P %Xi+%Dd %Mmaxrss %F+%Rpf %Ccsw";
#endif
#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';
}
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;
}
/*-------------------------------------------------------------------------
* tvsub - tdiff = t1 - t0
*-------------------------------------------------------------------------
*/
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;
}
}
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);
}
/*
* N R E A D
*/
Nread( fd, buf, count )
int fd;
char *buf;
int count;
{
struct sockaddr_in from;
int len = sizeof(from);
register int cnt;
if( udp ) {
#if 0
cnt = recvfrom( fd, buf, count, 0, &from, &len );
#else
cnt = recv( fd, buf, count, 0);
#endif
numCalls++;
} else {
if( b_flag )
cnt = mread( fd, buf, count ); /* fill buf */
else {
cnt = read( fd, buf, count );
numCalls++;
}
if (touchdata && cnt > 0) {
register int c = cnt, sum;
register char *b = buf;
while (c--)
sum += *b++;
}
}
return(cnt);
}
/*-------------------------------------------------------------------------
* Nwrite -
*-------------------------------------------------------------------------
*/
Nwrite(fd, buf, count)
int fd;
char *buf;
int count;
{
register int cnt;
if (udp) {
again:
if (atm) cnt = write(fd, buf, count);
else cnt = sendto(fd, buf, count, 0, &sinhim, sizeof(sinhim));
numCalls++;
if ( cnt<0 && errno == ENOBUFS ) {
delay(18000);
errno = 0;
goto again;
}
} else {
cnt = write(fd, buf, count);
numCalls++;
}
if (cnt < 0) perror("WA:write");
return(cnt);
}
void
delay(us)
{
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = us;
(void)select( 1, (char *)0, (char *)0, (char *)0, &tv );
}
/*
* 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(fd, bufp, n)
int fd;
register char *bufp;
unsigned n;
{
register unsigned count = 0;
register int nread;
do {
nread = read(fd, bufp, n-count);
numCalls++;
if(nread < 0) {
perror("ttcp_mread");
return(-1);
}
if(nread == 0)
return((int)count);
count += (unsigned)nread;
bufp += nread;
} while(count < n);
return((int)count);
}