File: [local] / OpenXM / src / kxx / oxserver00.c (download)
Revision 1.1.1.1 (vendor branch), Fri Oct 8 02:12:13 1999 UTC (24 years, 11 months ago) by maekawa
Branch: OpenXM
CVS Tags: ALPHA Changes since 1.1: +0 -0
lines
o import OpenXM sources
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/* nullserver01 */
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netdb.h>
#include <signal.h>
#include <setjmp.h>
/* -lnsl -lsocket /usr/ucblib/libucb.a */
#include "ox_kan.h"
#include "serversm.h"
int OxCritical = 0;
int OxInterruptFlag = 0;
int PacketMonitor = 0;
extern int SerialOX; /* Serial number of the packets sent. */
extern int SerialCurrent; /* Current Serial number of the recieved packet. */
extern int OXprintMessage; /* print oxmessages? */
jmp_buf EnvOfChildServer;
int JmpMessage = 0;
static char *getSuffix(char *s);
main(int argc, char *argv[]) {
char *s;
char *forAsir[] = {"callsm1.sm1","callsm1b.sm1"};
char *gnuplot[] = {"callsm1.sm1","gnuplot.sm1"};
char *phc[] = {"callsm1.sm1","phc.sm1"};
char *tigers[] = {"callsm1.sm1","tigers.sm1"};
char *basicCD[] = {"basicCD.sm1"};
/* If you change the above, you need to change the argc of Sm1_start below.
*/
if (argc > 1) {
if (strcmp(argv[1],"-monitor")==0) {
fprintf(stderr,"Taking the packet monitor.\n");
PacketMonitor = 1;
}else{
fprintf(stderr,"Unknown option. Possible options are -monitor\n");
}
}
/* Load initialization files if necessary. */
s = getSuffix(argv[0]);
if (strcmp(s,"forAsir") == 0) {
Sm1_start(2,forAsir,"ox_sm1_forAsir");
}else if (strcmp(s,"gnuplot") == 0) {
Sm1_start(2,gnuplot,"ox_sm1_gnuplot");
}else if (strcmp(s,"phc") == 0) {
Sm1_start(2,phc,"ox_sm1_phc");
}else if (strcmp(s,"tigers") == 0) {
Sm1_start(2,tigers,"ox_sm1_tigers");
}else if (strcmp(s,"basicCD") == 0) {
Sm1_start(1,basicCD,"basicCD");
}else { /* Default */
Sm1_start(0, NULL, "ox_sm1");
}
nullserver(3);
}
static char *getSuffix(char *s) {
/* getSuffix("ox_sm1_forAsir") returns "forAsir" */
/* getSuffix("ox_sm1_gnuplot") returns "gnuplot" */
int n,i,k;
n = strlen(s);
for (i=n-1; i>=0; i--) {
if (s[i] == '_') {
return( s+i+1 );
}
}
return(s);
}
nullserver(int fdStream) {
int mtag;
int message = 1;
ox_stream ostream;
char sreason[1024];
extern void controlResetHandler();
extern jmp_buf EnvOfStackMachine;
int engineByteOrder;
engineByteOrder = oxTellMyByteOrder(fdStream);
/* Set the network byte order. */
fprintf(stderr,"engineByteOrder=%x\n",engineByteOrder);
if (fdStream != -1) {
ostream = fp2open(fdStream);
if (ostream == NULL) {
fprintf(stderr,"fp2open(fdStream) failed.\n");
fdStream = -1;
}
if (PacketMonitor) fp2watch(ostream,stdout);
}
aaa : ;
if (setjmp(EnvOfChildServer)) {
fprintf(stderr,"childServerMain: jump here.\n");
if (OxInterruptFlag == 0) {
fprintf(stderr," ?! \n"); fflush(NULL);
}
signal(SIGUSR1,controlResetHandler); goto aaa;
} else {
if (JmpMessage) fprintf(stderr,"Set EnvOfChildServer.\n");
signal(SIGUSR1,controlResetHandler);
}
if (setjmp(EnvOfStackMachine)) {
fprintf(stderr,"childServerMain: jump here by EnvOfStackMachine.\n");
if (OxInterruptFlag == 0) {
fprintf(stderr," ?! \n"); fflush(NULL);
}
/* In case of error in the stack machine, pop the error info
and send the error packet. */
/* oxSendOXheader(ostream,OX_DATA,SerialOX++);
oxSendCmoError(ostream);
oxSendOXheader(ostream,OX_DATA,SerialOX++);
sprintf(sreason,"Jump here by sm1 error.");
oxSendCmoError2(ostream,sreason);
*/
Sm1_pushError2(SerialCurrent,-1,"Global jump by sm1 error");
signal(SIGUSR1,controlResetHandler); goto aaa ;
} else {
if (JmpMessage) fprintf(stderr,"Set EnvOfStackMachine.\n");
if (signal(SIGUSR1,SIG_IGN) != SIG_IGN) {
signal(SIGUSR1,controlResetHandler);
}
}
while (1) {
message = OXprintMessage;
if (OxInterruptFlag) {
OxCritical = 1;
if (message) {fprintf(stderr,"Clearing the read buffer.\n");fflush(NULL); }
fp2clearReadBuf(ostream); /* clear the read buffer */
if (message) {fprintf(stderr,"Throwing OX_SYNC_BALL\n"); fflush(NULL);}
oxSendSyncBall(ostream);
if (message) {fprintf(stderr,"Waiting for OX_SYNC_BALL\n");fflush(NULL);}
oxWaitSyncBall(ostream);
if (message) {fprintf(stderr,"Done changing OX_SYNC_BALL\n"); fflush(NULL);}
OxInterruptFlag = 0;
OxCritical = 0;
goto aaa ;
}
OxCritical = 0;
if (fp2select(ostream,-1)) {
/* If there is an data in the ostream, then read data in the buffer and
read data in the communication stream. */
OxCritical = 1;
}else{
/* interrupted system call */
/* This part is never reached. */
}
OxCritical = 1;
mtag = oxGetOXheader(ostream,&SerialCurrent); /* get the message_tag */
if (message) {
fprintf(stderr,"\nmtag is %d (serial=%d) : ",mtag,SerialCurrent);
switch(mtag) {
case OX_COMMAND: fprintf(stderr," OX_COMMAND \n"); break;
case OX_DATA: fprintf(stderr," OX_DATA \n"); break;
case OX_SYNC_BALL: fprintf(stderr," OX_SYNC_BALL \n"); break;
case -1: fprintf(stderr," End of file. Exiting the server child.\n");
exit(); break;
default: fprintf(stderr," ?! \n"); break;
}
}
/*sleep(2); /* for dubug OX_SYNC_BALL */
switch(mtag) {
case OX_COMMAND:
nullserverCommand(ostream);
goto aaa ; /* We always reset the jump vector. cf. memo1.txt 1998 2/13*/
break;
case OX_DATA:
Sm1_pushCMO(ostream);
break;
case OX_SYNC_BALL:
/* if (OxInterruptFlag) think about it later. */
break;
default:
fprintf(stderr,"Fatal error in server.\n");
break;
}
}
}
nullserverCommand(ox_stream ostream) {
int id;
int mtag;
int n;
char *name;
char *sresult;
struct mathCap *mathresult;
int iresult;
int message = 1;
char *emsg;
extern void controlResetHandler();
message = OXprintMessage;
/* message_body */
id = oxGetInt32(ostream); /* get the function_id */
if (message) {fprintf(stderr,"\nfunction_id is %d\n",id);}
switch( id ) {
case SM_mathcap:
if (message) fprintf(stderr," mathcap\n");
mathresult = (struct mathCap *)Sm1_mathcap();
oxPushMathCap(mathresult);
break;
case SM_setMathCap:
if (message) fprintf(stderr," setMathCap\n");
Sm1_setMathCap(ostream);
break;
case SM_pops:
if (message) fprintf(stderr," pops \n");
Sm1_pops();
break;
case SM_getsp:
if (message) fprintf(stderr," getsp \n");
Sm1_getsp();
break;
case SM_dupErrors:
if (message) fprintf(stderr," dupErrors \n");
Sm1_dupErrors();
break;
case SM_setName:
if (message) fprintf(stderr," setName \n");
iresult = Sm1_setName();
if (iresult < 0) {
Sm1_pushError2(SerialCurrent,-1,"setName");
}
break;
case SM_evalName:
if (message) fprintf(stderr," evalName \n");
iresult = Sm1_evalName();
if (iresult < 0) {
Sm1_pushError2(SerialCurrent,-1,"evalName");
}
break;
case SM_executeStringByLocalParser:
if (message) fprintf(stderr," executeStringByLocalParser\n");
OxCritical = 0;
iresult = Sm1_executeStringByLocalParser();
OxCritical = 1; signal(SIGUSR1,controlResetHandler);
if (iresult < 0) {
emsg = Sm1_popErrorMessage("executeString: ");
Sm1_pushError2(SerialCurrent,-1,emsg);
return(-1);
}
break;
case SM_executeFunction:
if (message) fprintf(stderr," executeFunction\n");
OxCritical = 0;
iresult = Sm1_executeStringByLocalParser();
OxCritical = 1; signal(SIGUSR1,controlResetHandler);
if (iresult < 0) {
emsg = Sm1_popErrorMessage("executeFunction: ");
Sm1_pushError2(SerialCurrent,-1,emsg);
return(-1);
}
break;
case SM_popCMO:
if (message) fprintf(stderr,"popCMO. Start to sending data.\n",n);
oxSendOXheader(ostream,OX_DATA,SerialOX++);
n=Sm1_popCMO(ostream,SerialCurrent);
if (message) fprintf(stderr,"Done.\n");
break;
case SM_popString:
if (message) fprintf(stderr,"popString. send data from the stack.\n",n);
oxSendOXheader(ostream,OX_DATA,SerialOX++);
oxSendCmoString(ostream,Sm1_popString());
if (message) fprintf(stderr,"Done.\n");
break;
case SM_shutdown:
case SM_beginBlock:
case SM_endBlock:
fprintf(stderr,"This command has not yet been implemented.\n");
return(-1);
break;
default:
fprintf(stderr,"Fatal error. Unknown function_id %d\n",id);
return(-1);
break;
}
return(0);
}
nullserver_simplest(int fd) {
int c;
while(1) {
c = readOneByte(fd);
if (c == '@') { return; }
}
}
void controlResetHandler(sig)
int sig;
{
signal(sig,SIG_IGN);
fprintf(stderr,"From controlResetHandler. OxCritical = %d\n",OxCritical);
OxInterruptFlag = 1;
if (OxCritical) {
return;
}else{
longjmp(EnvOfChildServer,2); /* returns 2 for ctrl-C */
}
}