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Functions
ssiLink.h File Reference
#include "Singular/links/silink.h"

Go to the source code of this file.

Functions

BOOLEAN ssiOpen (si_link l, short flag, leftv u)
 
BOOLEAN ssiWrite (si_link l, leftv v)
 
leftv ssiRead1 (si_link l)
 
leftv ssiRead2 (si_link l, leftv key)
 
BOOLEAN ssiClose (si_link l)
 
const charslStatusSsi (si_link l, const char *request)
 
si_link_extension slInitSsiExtension (si_link_extension s)
 
si_link ssiCommandLink ()
 
void sig_chld_hdl (int sig)
 additional default signal handler
 
int ssiReservePort (int clients)
 

Function Documentation

◆ sig_chld_hdl()

void sig_chld_hdl ( int sig)

additional default signal handler

some newer Linux version cannot have SIG_IGN for SIGCHLD, so use this nice routine here: SuSe 9.x reports -1 always Redhat 9.x/FC x reports sometimes -1 see also: hpux_system also needed by getrusage (timer etc.)

Parameters
[in]sig

Definition at line 2244 of file ssiLink.cc.

2245{
2246 pid_t kidpid;
2247 int status;
2248
2249 loop
2250 {
2252 if (kidpid==-1)
2253 {
2254 /* continue on interruption (EINTR): */
2255 if (errno == EINTR) continue;
2256 /* break on anything else (EINVAL or ECHILD according to manpage): */
2257 break;
2258 }
2259 else if (kidpid==0) break; /* no more children to process, so break */
2260
2261 //printf("Child %ld terminated\n", kidpid);
2263 while((hh!=NULL)&&(ssiToBeClosed_inactive))
2264 {
2265 if((hh->l!=NULL) && (hh->l->m->Open==ssiOpen))
2266 {
2267 ssiInfo *d = (ssiInfo *)hh->l->data;
2268 if(d->pid==kidpid)
2269 {
2271 {
2273 slClose(hh->l);
2275 break;
2276 }
2277 else break;
2278 }
2279 else hh=(link_list)hh->next;
2280 }
2281 else hh=(link_list)hh->next;
2282 }
2283 }
2284}
#define TRUE
Definition auxiliary.h:100
#define FALSE
Definition auxiliary.h:96
#define NULL
Definition omList.c:12
int * status
Definition si_signals.h:51
#define loop
Definition structs.h:75

◆ slInitSsiExtension()

si_link_extension slInitSsiExtension ( si_link_extension s)

Definition at line 1857 of file ssiLink.cc.

1858{
1859 s->Open=ssiOpen;
1860 s->Close=ssiClose;
1861 s->Kill=ssiClose;
1862 s->Read=ssiRead1;
1863 s->Read2=(slRead2Proc)NULL;
1864 s->Write=ssiWrite;
1865 s->Dump=ssiDump;
1866 s->GetDump=ssiGetDump;
1867
1868 s->Status=slStatusSsi;
1869 s->SetRing=ssiSetRing;
1870 s->type="ssi";
1871 return s;
1872}
const CanonicalForm int s
Definition facAbsFact.cc:51

◆ slStatusSsi()

const char * slStatusSsi ( si_link l,
const char * request )

Definition at line 1874 of file ssiLink.cc.

1875{
1876 ssiInfo *d=(ssiInfo*)l->data;
1877 if (d==NULL) return "not open";
1878 if (((strcmp(l->mode,"fork")==0)
1879 ||(strcmp(l->mode,"tcp")==0)
1880 ||(strcmp(l->mode,"connect")==0))
1881 && (strcmp(request, "read") == 0))
1882 {
1883 fd_set mask;
1884 struct timeval wt;
1885 if (s_isready(d->f_read)) return "ready";
1886 loop
1887 {
1888 /* Don't block. Return socket status immediately. */
1889 wt.tv_sec = 0;
1890 wt.tv_usec = 0;
1891
1892 FD_ZERO(&mask);
1893 FD_SET(d->fd_read, &mask);
1894 //Print("test fd %d\n",d->fd_read);
1895 /* check with select: chars waiting: no -> not ready */
1896 switch (si_select(d->fd_read+1, &mask, NULL, NULL, &wt))
1897 {
1898 case 0: /* not ready */ return "not ready";
1899 case -1: /*error*/ return "error";
1900 case 1: /*ready ? */ break;
1901 }
1902 /* yes: read 1 char*/
1903 /* if \n, check again with select else ungetc(c), ready*/
1904 int c=s_getc(d->f_read);
1905 //Print("try c=%d\n",c);
1906 if (c== -1) return "eof"; /* eof or error */
1907 else if (isdigit(c))
1908 { s_ungetc(c,d->f_read); return "ready"; }
1909 else if (c>' ')
1910 {
1911 Werror("unknown char in ssiLink(%d)",c);
1912 return "error";
1913 }
1914 /* else: next char */
1915 }
1916 }
1917 else if (strcmp(request, "read") == 0)
1918 {
1919 if (SI_LINK_R_OPEN_P(l) && (!s_iseof(d->f_read)) && (s_isready(d->f_read))) return "ready";
1920 else return "not ready";
1921 }
1922 else if (strcmp(request, "write") == 0)
1923 {
1924 if (SI_LINK_W_OPEN_P(l)) return "ready";
1925 else return "not ready";
1926 }
1927 else return "unknown status request";
1928}
int l
Definition cfEzgcd.cc:100
void Werror(const char *fmt,...)
Definition reporter.cc:189
int s_getc(s_buff F)
Definition s_buff.cc:58
int s_isready(s_buff F)
Definition s_buff.cc:85
int s_iseof(s_buff F)
Definition s_buff.cc:254
void s_ungetc(int c, s_buff F)
Definition s_buff.cc:99

◆ ssiClose()

BOOLEAN ssiClose ( si_link l)

Definition at line 1422 of file ssiLink.cc.

1423{
1424 if (l!=NULL)
1425 {
1427 ssiInfo *d = (ssiInfo *)l->data;
1428 if (d!=NULL)
1429 {
1430 // send quit signal
1431 if ((d->send_quit_at_exit)
1432 && (d->quit_sent==0))
1433 {
1434 fputs("99\n",d->f_write);
1435 fflush(d->f_write);
1436 }
1437 // clean ring
1438 if (d->r!=NULL) rKill(d->r);
1439 for(int i=0;i<SI_RING_CACHE;i++)
1440 {
1441 if (d->rings[i]!=NULL) rKill(d->rings[i]);
1442 d->rings[i]=NULL;
1443 }
1444 // did the child to stop ?
1445 si_waitpid(d->pid,NULL,WNOHANG);
1446 if ((d->pid!=0)
1447 && (kill(d->pid,0)==0)) // child is still running
1448 {
1449 struct timespec t;
1450 t.tv_sec=0;
1451 t.tv_nsec=100000000; // <=100 ms
1452 struct timespec rem;
1453 int r;
1454 loop
1455 {
1456 // wait till signal or time rem:
1457 r = nanosleep(&t, &rem);
1458 t = rem;
1459 // child finished:
1460 if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1461 // other signal, waited s>= 100 ms:
1462 if ((r==0) || (errno != EINTR)) break;
1463 }
1464 if (kill(d->pid,0) == 0) // pid still exists
1465 {
1466 kill(d->pid,15);
1467 t.tv_sec=5; // <=5s
1468 t.tv_nsec=0;
1469 loop
1470 {
1471 // wait till signal or time rem:
1472 r = nanosleep(&t, &rem);
1473 t = rem;
1474 // child finished:
1475 if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1476 // other signal, waited s>= 5 s:
1477 if ((r==0) || (errno != EINTR)) break;
1478 }
1479 if (kill(d->pid,0) == 0)
1480 {
1481 kill(d->pid,9); // just to be sure
1482 si_waitpid(d->pid,NULL,0);
1483 }
1484 }
1485 }
1486 if (d->f_read!=NULL) { s_close(d->f_read);d->f_read=NULL;}
1487 if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1488 if ((strcmp(l->mode,"tcp")==0)
1489 || (strcmp(l->mode,"fork")==0))
1490 {
1492 if (hh!=NULL)
1493 {
1494 if (hh->l==l)
1495 {
1496 ssiToBeClosed=(link_list)hh->next;
1497 omFreeSize(hh,sizeof(link_struct));
1498 }
1499 else while(hh->next!=NULL)
1500 {
1501 link_list hhh=(link_list)hh->next;
1502 if (hhh->l==l)
1503 {
1504 hh->next=hhh->next;
1505 omFreeSize(hhh,sizeof(link_struct));
1506 break;
1507 }
1508 else
1509 hh=(link_list)hh->next;
1510 }
1511 }
1512 }
1513 omFreeSize((ADDRESS)d,(sizeof *d));
1514 }
1515 l->data=NULL;
1516 }
1517 return FALSE;
1518}
int i
Definition cfEzgcd.cc:132
void rKill(ring r)
Definition ipshell.cc:6182
void rem(unsigned long *a, unsigned long *q, unsigned long p, int &dega, int degq)
Definition minpoly.cc:572
#define omFreeSize(addr, size)
int s_close(s_buff &F)
Definition s_buff.cc:45
#define SI_RING_CACHE
Definition s_buff.h:30

◆ ssiCommandLink()

si_link ssiCommandLink ( )

Definition at line 2173 of file ssiLink.cc.

2174{
2175 if (ssiReserved_P==0)
2176 {
2177 WerrorS("ERROR no reserved port requested");
2178 return NULL;
2179 }
2180 struct sockaddr_in cli_addr;
2181 int clilen = sizeof(cli_addr);
2183 if(newsockfd < 0)
2184 {
2185 Werror("ERROR on accept (errno=%d)",errno);
2186 return NULL;
2187 }
2190 si_link_extension prev = s;
2191 while (strcmp(s->type, "ssi") != 0)
2192 {
2193 if (s->next == NULL)
2194 {
2195 prev = s;
2196 s = NULL;
2197 break;
2198 }
2199 else
2200 {
2201 s = s->next;
2202 }
2203 }
2204 if (s != NULL)
2205 l->m = s;
2206 else
2207 {
2209 prev->next=slInitSsiExtension(ns);
2210 l->m = prev->next;
2211 }
2212 l->name=omStrDup("");
2213 l->mode=omStrDup("tcp");
2214 l->ref=1;
2215 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
2216 l->data=d;
2217 d->fd_read = newsockfd;
2218 d->fd_write = newsockfd;
2219 d->f_read = s_open(newsockfd);
2220 d->f_write = fdopen(newsockfd, "w");
2223 if (ssiReserved_Clients<=0)
2224 {
2225 ssiReserved_P=0;
2227 }
2228 return l;
2229}
void WerrorS(const char *s)
Definition feFopen.cc:24
#define omStrDup(s)
#define omAlloc0Bin(bin)
#define omAlloc0(size)
s_buff s_open(int fd)
Definition s_buff.cc:31
int fd_write
Definition s_buff.h:26
s_buff f_read
Definition s_buff.h:22
FILE * f_write
Definition s_buff.h:23
int fd_read
Definition s_buff.h:26

◆ ssiOpen()

BOOLEAN ssiOpen ( si_link l,
short flag,
leftv u )

Definition at line 995 of file ssiLink.cc.

996{
997 if (l!=NULL)
998 {
999 const char *mode;
1000 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
1001 if (flag & SI_LINK_OPEN)
1002 {
1003 if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0))
1004 flag = SI_LINK_READ;
1005 else flag = SI_LINK_WRITE;
1006 }
1007
1008 if (flag == SI_LINK_READ) mode = "r";
1009 else if (strcmp(l->mode, "w") == 0) mode = "w";
1010 else if (strcmp(l->mode, "fork") == 0) mode = "fork";
1011 else if (strcmp(l->mode, "tcp") == 0) mode = "tcp";
1012 else if (strcmp(l->mode, "connect") == 0) mode = "connect";
1013 else mode = "a";
1014
1015
1016 SI_LINK_SET_OPEN_P(l, flag);
1017 if(l->data!=NULL) omFreeSize(l->data,sizeof(ssiInfo));
1018 l->data=d;
1019 omFreeBinAddr(l->mode);
1020 l->mode = omStrDup(mode);
1021
1022 if (l->name[0] == '\0')
1023 {
1024 if (strcmp(mode,"fork")==0)
1025 {
1026 int pc[2];
1027 int cp[2];
1028 int err1=pipe(pc);
1029 int err2=pipe(cp);
1030 if (err1 || err2)
1031 {
1032 Werror("pipe failed with %d\n",errno);
1033 return TRUE;
1034 }
1036 n->u=u;
1037 n->l=l;
1038 n->next=(void *)ssiToBeClosed;
1039 ssiToBeClosed=n;
1040
1041 pid_t pid = fork();
1042 if (pid == -1 && errno == EAGAIN) // RLIMIT_NPROC too low?
1043 {
1045 pid = fork();
1046 }
1047 if (pid == -1)
1048 {
1049 WerrorS("could not fork");
1050 }
1051 if (pid==0) /*fork: child*/
1052 {
1053 /* block SIGINT */
1058 /* set #cpu to 1 for the child:*/
1060
1062 /* we know: l is the first entry in ssiToBeClosed-list */
1063 while(hh!=NULL)
1064 {
1066 ssiInfo *dd=(ssiInfo*)hh->l->data;
1067 s_close(dd->f_read);
1068 fclose(dd->f_write);
1069 if (dd->r!=NULL) rKill(dd->r);
1070 omFreeSize((ADDRESS)dd,(sizeof *dd));
1071 hh->l->data=NULL;
1072 link_list nn=(link_list)hh->next;
1073 omFree(hh);
1074 hh=nn;
1075 }
1077#ifdef HAVE_SIMPLEIPC
1079#endif // HAVE_SIMPLEIPC
1080 si_close(pc[1]); si_close(cp[0]);
1081 d->f_write=fdopen(cp[1],"w");
1082 d->f_read=s_open(pc[0]);
1083 d->fd_read=pc[0];
1084 d->fd_write=cp[1];
1085 //d->r=currRing;
1086 //if (d->r!=NULL) d->r->ref++;
1087 l->data=d;
1088 omFreeBinAddr(l->mode);
1089 l->mode = omStrDup(mode);
1092 //myynest=0;
1094 if ((u!=NULL)&&(u->rtyp==IDHDL))
1095 {
1096 idhdl h=(idhdl)u->data;
1097 h->lev=0;
1098 }
1099 loop
1100 {
1101 if (!SI_LINK_OPEN_P(l)) m2_end(0);
1102 if(d->f_read->is_eof) m2_end(0);
1103 leftv h=ssiRead1(l); /*contains an exit.... */
1104 if (feErrors != NULL && *feErrors != '\0')
1105 {
1106 // handle errors:
1107 PrintS(feErrors); /* currently quite simple */
1108 *feErrors = '\0';
1109 }
1110 ssiWrite(l,h);
1111 h->CleanUp();
1113 }
1114 /* never reached*/
1115 }
1116 else if (pid>0) /*fork: parent*/
1117 {
1118 d->pid=pid;
1119 si_close(pc[0]); si_close(cp[1]);
1120 d->f_write=fdopen(pc[1],"w");
1121 d->f_read=s_open(cp[0]);
1122 d->fd_read=cp[0];
1123 d->fd_write=pc[1];
1125 d->send_quit_at_exit=1;
1126 //d->r=currRing;
1127 //if (d->r!=NULL) d->r->ref++;
1128 }
1129 else
1130 {
1131 Werror("fork failed (%d)",errno);
1132 l->data=NULL;
1133 omFree(d);
1134 return TRUE;
1135 }
1136 }
1137 // ---------------------------------------------------------------------
1138 else if (strcmp(mode,"tcp")==0)
1139 {
1143 if(sockfd < 0)
1144 {
1145 WerrorS("ERROR opening socket");
1146 l->data=NULL;
1147 l->flags=0;
1148 omFree(d);
1149 return TRUE;
1150 }
1151 memset((char *) &serv_addr,0, sizeof(serv_addr));
1152 portno = 1025;
1153 serv_addr.sin_family = AF_INET;
1154 serv_addr.sin_addr.s_addr = INADDR_ANY;
1155 do
1156 {
1157 portno++;
1158 serv_addr.sin_port = htons(portno);
1159 if(portno > 50000)
1160 {
1161 WerrorS("ERROR on binding (no free port available?)");
1162 l->data=NULL;
1163 l->flags=0;
1164 omFree(d);
1165 return TRUE;
1166 }
1167 }
1168 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1169 Print("waiting on port %d\n", portno);mflush();
1170 listen(sockfd,1);
1172 if(newsockfd < 0)
1173 {
1174 WerrorS("ERROR on accept");
1175 l->data=NULL;
1176 l->flags=0;
1177 omFree(d);
1178 return TRUE;
1179 }
1180 PrintS("client accepted\n");
1181 d->fd_read = newsockfd;
1182 d->fd_write = newsockfd;
1183 d->f_read = s_open(newsockfd);
1184 d->f_write = fdopen(newsockfd, "w");
1187 }
1188 // no ssi-Link on stdin or stdout
1189 else
1190 {
1191 Werror("invalid mode >>%s<< for ssi",mode);
1192 l->data=NULL;
1193 l->flags=0;
1194 omFree(d);
1195 return TRUE;
1196 }
1197 }
1198 // =========================================================================
1199 else /*l->name=NULL*/
1200 {
1201 // tcp mode
1202 if(strcmp(mode,"tcp")==0)
1203 {
1207 if(sockfd < 0)
1208 {
1209 WerrorS("ERROR opening socket");
1210 l->data=NULL;
1211 l->flags=0;
1212 omFree(d);
1213 return TRUE;
1214 }
1215 memset((char *) &serv_addr,0, sizeof(serv_addr));
1216 portno = 1025;
1217 serv_addr.sin_family = AF_INET;
1218 serv_addr.sin_addr.s_addr = INADDR_ANY;
1219 do
1220 {
1221 portno++;
1222 serv_addr.sin_port = htons(portno);
1223 if(portno > 50000)
1224 {
1225 WerrorS("ERROR on binding (no free port available?)");
1226 l->data=NULL;
1227 l->flags=0;
1228 return TRUE;
1229 }
1230 }
1231 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1232 //Print("waiting on port %d\n", portno);mflush();
1233 listen(sockfd,1);
1234 char* cli_host = (char*)omAlloc(256);
1235 char* path = (char*)omAlloc(1024);
1236 int r = si_sscanf(l->name,"%255[^:]:%s",cli_host,path);
1237 if(r == 0)
1238 {
1239 WerrorS("ERROR: no host specified");
1240 l->data=NULL;
1241 l->flags=0;
1242 omFree(d);
1243 omFree(path);
1245 return TRUE;
1246 }
1247 else if(r == 1)
1248 {
1249 WarnS("program not specified, using /usr/local/bin/Singular");
1250 Warn("in line >>%s<<",my_yylinebuf);
1251 strcpy(path,"/usr/local/bin/Singular");
1252 }
1253 char* ssh_command = (char*)omAlloc(256);
1254 char* ser_host = (char*)omAlloc(64);
1256 if (strcmp(cli_host,"localhost")==0) /*avoid "ssh localhost" as key may change*/
1257 snprintf(ssh_command,256,"%s -q --batch --link=ssi --MPhost=%s --MPport=%d &",path,ser_host,portno);
1258 else
1259 snprintf(ssh_command,256,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno);
1260 //Print("client on %s started:%s\n",cli_host,path);
1261 omFree(path);
1263 if (TEST_OPT_PROT) { Print("running >>%s<<\n",ssh_command); }
1264 int re=system(ssh_command);
1265 if (re<0)
1266 {
1267 Werror("ERROR running `%s` (%d)",ssh_command,re);
1268 l->data=NULL;
1269 l->flags=0;
1270 omFree(d);
1271 return TRUE;
1272 }
1275 clilen = sizeof(cli_addr);
1277 if(newsockfd < 0)
1278 {
1279 WerrorS("ERROR on accept");
1280 l->data=NULL;
1281 l->flags=0;
1282 omFree(d);
1283 return TRUE;
1284 }
1285 //PrintS("client accepted\n");
1286 d->fd_read = newsockfd;
1287 d->fd_write = newsockfd;
1288 d->f_read = s_open(newsockfd);
1289 d->f_write = fdopen(newsockfd, "w");
1292 d->send_quit_at_exit=1;
1294 newlink->u=u;
1295 newlink->l=l;
1296 newlink->next=(void *)ssiToBeClosed;
1298 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1299 }
1300 // ----------------------------------------------------------------------
1301 else if(strcmp(mode,"connect")==0)
1302 {
1303 char* host = (char*)omAlloc(256);
1304 int sockfd, portno;
1305 struct sockaddr_in serv_addr;
1306 struct hostent *server;
1307
1308 si_sscanf(l->name,"%255[^:]:%d",host,&portno);
1309 //Print("connect to host %s, port %d\n",host,portno);mflush();
1310 if (portno!=0)
1311 {
1313 if (sockfd < 0)
1314 {
1315 WerrorS("ERROR opening socket");
1316 l->flags=0;
1317 return TRUE;
1318 }
1320 if (server == NULL)
1321 {
1322 WerrorS("ERROR, no such host");
1323 l->flags=0;
1324 return TRUE;
1325 }
1326 memset((char *) &serv_addr, 0, sizeof(serv_addr));
1327 serv_addr.sin_family = AF_INET;
1328 memcpy((char *)&serv_addr.sin_addr.s_addr,
1329 (char *)server->h_addr,
1330 server->h_length);
1331 serv_addr.sin_port = htons(portno);
1332 if (si_connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)
1333 {
1334 Werror("ERROR connecting(errno=%d)",errno);
1335 l->flags=0;
1336 return TRUE;
1337 }
1338 //PrintS("connected\n");mflush();
1339 d->f_read=s_open(sockfd);
1340 d->fd_read=sockfd;
1341 d->f_write=fdopen(sockfd,"w");
1342 d->fd_write=sockfd;
1344 omFree(host);
1345 }
1346 else
1347 {
1348 l->data=NULL;
1349 l->flags=0;
1350 omFree(d);
1351 return TRUE;
1352 }
1353 }
1354 // ======================================================================
1355 else
1356 {
1357 // normal link to a file
1358 FILE *outfile;
1359 char *filename=l->name;
1360
1361 if(filename[0]=='>')
1362 {
1363 if (filename[1]=='>')
1364 {
1365 filename+=2;
1366 mode = "a";
1367 }
1368 else
1369 {
1370 filename++;
1371 mode="w";
1372 }
1373 }
1374 outfile=myfopen(filename,mode);
1375 if (outfile!=NULL)
1376 {
1377 if (strcmp(l->mode,"r")==0)
1378 {
1379 fclose(outfile);
1380 d->f_read=s_open_by_name(filename);
1381 }
1382 else
1383 {
1384 d->f_write = outfile;
1385 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1386 }
1387 }
1388 else
1389 {
1390 omFree(d);
1391 l->data=NULL;
1392 l->flags=0;
1393 return TRUE;
1394 }
1395 }
1396 }
1397 }
1398
1399 return FALSE;
1400}
Definition idrec.h:35
Class used for (list of) interpreter objects.
Definition subexpr.h:83
int rtyp
Definition subexpr.h:91
void * data
Definition subexpr.h:88
VAR BOOLEAN singular_in_batchmode
Definition cntrlc.cc:62
#define Print
Definition emacs.cc:80
#define Warn
Definition emacs.cc:77
#define WarnS
Definition emacs.cc:78
FILE * myfopen(const char *path, const char *mode)
Definition feFopen.cc:167
const char * feSetOptValue(feOptIndex opt, char *optarg)
Definition feOpt.cc:154
VAR char my_yylinebuf[80]
Definition febase.cc:44
char * fe_fgets_dummy(const char *, char *, int)
Definition feread.cc:455
char *(* fe_fgets_stdin)(const char *pr, char *s, int size)
Definition feread.cc:32
EXTERN_VAR omBin sleftv_bin
Definition ipid.h:145
STATIC_VAR Poly * h
Definition janet.cc:971
void m2_end(int i)
Definition misc_ip.cc:1100
#define omAlloc(size)
#define omFree(addr)
#define omFreeBin(addr, bin)
#define omFreeBinAddr(addr)
VAR unsigned si_opt_2
Definition options.c:6
VAR unsigned si_opt_1
Definition options.c:5
#define TEST_OPT_PROT
Definition options.h:103
void PrintS(const char *s)
Definition reporter.cc:284
VAR char * feErrors
Definition reporter.cc:47
#define mflush()
Definition reporter.h:58
idrec * idhdl
Definition ring.h:21
int raise_rlimit_nproc()
Definition rlimit.c:18
s_buff s_open_by_name(const char *n)
Definition s_buff.cc:39
pid_t pid
Definition s_buff.h:25
char send_quit_at_exit
Definition s_buff.h:28
VAR int sem_acquired[SIPC_MAX_SEMAPHORES]
Definition semaphore.c:25
#define SIPC_MAX_SEMAPHORES
Definition simpleipc.h:10
#define IDHDL
Definition tok.h:31
@ MAX_TOK
Definition tok.h:220

◆ ssiRead1()

leftv ssiRead1 ( si_link l)

Definition at line 1521 of file ssiLink.cc.

1522{
1523 ssiInfo *d = (ssiInfo *)l->data;
1525 int t=0;
1526 t=s_readint(d->f_read);
1527 //Print("got type %d\n",t);
1528 switch(t)
1529 {
1530 case 1:res->rtyp=INT_CMD;
1531 res->data=(char *)(long)ssiReadInt(d->f_read);
1532 break;
1533 case 2:res->rtyp=STRING_CMD;
1534 res->data=(char *)ssiReadString(d);
1535 break;
1536 case 3:res->rtyp=NUMBER_CMD;
1537 if (d->r==NULL) goto no_ring;
1538 ssiCheckCurrRing(d->r);
1539 res->data=(char *)ssiReadNumber(d);
1540 break;
1541 case 4:res->rtyp=BIGINT_CMD;
1542 res->data=(char *)ssiReadBigInt(d);
1543 break;
1544 case 15:
1545 case 5:{
1546 d->r=ssiReadRing(d);
1547 if (errorreported) return NULL;
1548 res->data=(char*)d->r;
1549 if (d->r!=NULL) rIncRefCnt(d->r);
1550 res->rtyp=RING_CMD;
1551 if (t==15) // setring
1552 {
1553 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1555 return ssiRead1(l);
1556 }
1557 }
1558 break;
1559 case 6:res->rtyp=POLY_CMD;
1560 if (d->r==NULL) goto no_ring;
1561 ssiCheckCurrRing(d->r);
1562 res->data=(char*)ssiReadPoly(d);
1563 break;
1564 case 7:res->rtyp=IDEAL_CMD;
1565 if (d->r==NULL) goto no_ring;
1566 ssiCheckCurrRing(d->r);
1567 res->data=(char*)ssiReadIdeal(d);
1568 break;
1569 case 8:res->rtyp=MATRIX_CMD;
1570 if (d->r==NULL) goto no_ring;
1571 ssiCheckCurrRing(d->r);
1572 res->data=(char*)ssiReadMatrix(d);
1573 break;
1574 case 9:res->rtyp=VECTOR_CMD;
1575 if (d->r==NULL) goto no_ring;
1576 ssiCheckCurrRing(d->r);
1577 res->data=(char*)ssiReadPoly(d);
1578 break;
1579 case 10:
1580 case 22:if (t==22) res->rtyp=SMATRIX_CMD;
1581 else res->rtyp=MODUL_CMD;
1582 if (d->r==NULL) goto no_ring;
1583 ssiCheckCurrRing(d->r);
1584 {
1585 int rk=s_readint(d->f_read);
1586 ideal M=ssiReadIdeal(d);
1587 M->rank=rk;
1588 res->data=(char*)M;
1589 }
1590 break;
1591 case 11:
1592 {
1593 res->rtyp=COMMAND;
1594 res->data=ssiReadCommand(l);
1595 int nok=res->Eval();
1596 if (nok) WerrorS("error in eval");
1597 break;
1598 }
1599 case 12: /*DEF_CMD*/
1600 {
1601 res->rtyp=0;
1602 res->name=(char *)ssiReadString(d);
1603 int nok=res->Eval();
1604 if (nok) WerrorS("error in name lookup");
1605 break;
1606 }
1607 case 13: res->rtyp=PROC_CMD;
1608 res->data=ssiReadProc(d);
1609 break;
1610 case 14: res->rtyp=LIST_CMD;
1611 res->data=ssiReadList(l);
1612 break;
1613 case 16: res->rtyp=NONE; res->data=NULL;
1614 break;
1615 case 17: res->rtyp=INTVEC_CMD;
1616 res->data=ssiReadIntvec(d);
1617 break;
1618 case 18: res->rtyp=INTMAT_CMD;
1619 res->data=ssiReadIntmat(d);
1620 break;
1621 case 19: res->rtyp=BIGINTMAT_CMD;
1622 res->data=ssiReadBigintmat(d);
1623 break;
1624 case 20: ssiReadBlackbox(res,l);
1625 break;
1626 case 21: ssiReadAttrib(res,l);
1627 break;
1628 case 23: ssiReadRingProperties(l);
1629 return ssiRead1(l);
1630 break;
1631 case 24: res->rtyp=BIGINTVEC_CMD;
1632 res->data=ssiReadBigintvec(d);
1633 break;
1634 // ------------
1635 case 98: // version
1636 {
1637 int n98_v,n98_m;
1639 n98_v=s_readint(d->f_read);
1640 n98_m=s_readint(d->f_read);
1641 n98_o1=s_readint(d->f_read);
1642 n98_o2=s_readint(d->f_read);
1643 if ((n98_v!=SSI_VERSION) ||(n98_m!=MAX_TOK))
1644 {
1645 Print("incompatible versions of ssi: %d/%d vs %d/%d\n",
1647 }
1648 #ifndef SING_NDEBUG
1649 if (TEST_OPT_DEBUG)
1650 Print("// opening ssi-%d, MAX_TOK=%d\n",n98_v,n98_m);
1651 #endif
1655 return ssiRead1(l);
1656 }
1657 case 99: omFreeBin(res,sleftv_bin); ssiClose(l); m2_end(0);
1658 case 0: if (s_iseof(d->f_read))
1659 {
1660 ssiClose(l);
1661 }
1662 res->rtyp=DEF_CMD;
1663 break;
1664 default: Werror("not implemented (t:%d)",t);
1666 res=NULL;
1667 break;
1668 }
1669 // if currRing is required for the result, but lost
1670 // define "ssiRing%d" as currRing:
1671 if ((d->r!=NULL)
1672 && (currRing!=d->r)
1673 && (res->RingDependend()))
1674 {
1675 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1676 }
1677 return res;
1678no_ring: WerrorS("no ring");
1680 return NULL;
1681}
CanonicalForm res
Definition facAbsFact.cc:60
VAR short errorreported
Definition feFopen.cc:23
@ IDEAL_CMD
Definition grammar.cc:285
@ MATRIX_CMD
Definition grammar.cc:287
@ BIGINTMAT_CMD
Definition grammar.cc:278
@ PROC_CMD
Definition grammar.cc:281
@ INTMAT_CMD
Definition grammar.cc:280
@ MODUL_CMD
Definition grammar.cc:288
@ SMATRIX_CMD
Definition grammar.cc:292
@ VECTOR_CMD
Definition grammar.cc:293
@ BIGINTVEC_CMD
Definition grammar.cc:279
@ NUMBER_CMD
Definition grammar.cc:289
@ POLY_CMD
Definition grammar.cc:290
@ RING_CMD
Definition grammar.cc:282
#define TEST_OPT_DEBUG
Definition options.h:108
VAR ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition polys.cc:13
static ring rIncRefCnt(ring r)
Definition ring.h:846
int s_readint(s_buff F)
Definition s_buff.cc:112
#define M
Definition sirandom.c:25
sleftv * leftv
Definition structs.h:57
#define BITSET
Definition structs.h:16
@ BIGINT_CMD
Definition tok.h:38
@ LIST_CMD
Definition tok.h:118
@ INTVEC_CMD
Definition tok.h:101
@ DEF_CMD
Definition tok.h:58
@ STRING_CMD
Definition tok.h:187
@ INT_CMD
Definition tok.h:96
#define NONE
Definition tok.h:223
#define COMMAND
Definition tok.h:29

◆ ssiRead2()

leftv ssiRead2 ( si_link l,
leftv key )

◆ ssiReservePort()

int ssiReservePort ( int clients)

Definition at line 2137 of file ssiLink.cc.

2138{
2139 if (ssiReserved_P!=0)
2140 {
2141 WerrorS("ERROR already a reserved port requested");
2142 return 0;
2143 }
2144 int portno;
2146 if(ssiReserved_sockfd < 0)
2147 {
2148 WerrorS("ERROR opening socket");
2149 return 0;
2150 }
2151 memset((char *) &ssiResverd_serv_addr,0, sizeof(ssiResverd_serv_addr));
2152 portno = 1025;
2153 ssiResverd_serv_addr.sin_family = AF_INET;
2154 ssiResverd_serv_addr.sin_addr.s_addr = INADDR_ANY;
2155 do
2156 {
2157 portno++;
2158 ssiResverd_serv_addr.sin_port = htons(portno);
2159 if(portno > 50000)
2160 {
2161 WerrorS("ERROR on binding (no free port available?)");
2162 return 0;
2163 }
2164 }
2169 return portno;
2170}

◆ ssiWrite()

BOOLEAN ssiWrite ( si_link l,
leftv v )

Definition at line 1702 of file ssiLink.cc.

1703{
1704 if(SI_LINK_W_OPEN_P(l)==0)
1706 ssiInfo *d = (ssiInfo *)l->data;
1707 d->level++;
1708 //FILE *fich=d->f;
1709 while (data!=NULL)
1710 {
1711 int tt=data->Typ();
1712 void *dd=data->Data();
1713 attr *aa=data->Attribute();
1714 if ((aa!=NULL) && ((*aa)!=NULL)) // n user attributes
1715 {
1716 attr a=*aa;
1717 int n=0;
1718 while(a!=NULL) { n++; a=a->next;}
1719 fprintf(d->f_write,"21 %d %d ",data->flag,n);
1720 }
1721 else if (data->flag!=0) // only "flag" attributes
1722 {
1723 fprintf(d->f_write,"21 %d 0 ",data->flag);
1724 }
1725 if ((dd==NULL) && (data->name!=NULL) && (tt==0)) tt=DEF_CMD;
1726 // return pure undefined names as def
1727
1728 switch(tt /*data->Typ()*/)
1729 {
1730 case 0: /*error*/
1731 case NONE/* nothing*/:fputs("16 ",d->f_write);
1732 break;
1733 case STRING_CMD: fputs("2 ",d->f_write);
1734 ssiWriteString(d,(char *)dd);
1735 break;
1736 case INT_CMD: fputs("1 ",d->f_write);
1737 ssiWriteInt(d,(int)(long)dd);
1738 break;
1739 case BIGINT_CMD:fputs("4 ",d->f_write);
1741 break;
1742 case NUMBER_CMD:
1743 if (d->r!=currRing)
1744 {
1745 fputs("15 ",d->f_write);
1747 if (d->level<=1) fputc('\n',d->f_write);
1748 }
1749 fputs("3 ",d->f_write);
1751 break;
1752 case RING_CMD:fputs("5 ",d->f_write);
1753 ssiWriteRing(d,(ring)dd);
1754 break;
1755 case BUCKET_CMD:
1756 {
1758 if (d->r!=sBucketGetRing(b))
1759 {
1760 fputs("15 ",d->f_write);
1762 if (d->level<=1) fputc('\n',d->f_write);
1763 }
1764 fputs("6 ",d->f_write);
1766 break;
1767 }
1768 case POLY_CMD:
1769 case VECTOR_CMD:
1770 if (d->r!=currRing)
1771 {
1772 fputs("15 ",d->f_write);
1774 if (d->level<=1) fputc('\n',d->f_write);
1775 }
1776 if(tt==POLY_CMD) fputs("6 ",d->f_write);
1777 else fputs("9 ",d->f_write);
1778 ssiWritePoly(d,tt,(poly)dd);
1779 break;
1780 case IDEAL_CMD:
1781 case MODUL_CMD:
1782 case MATRIX_CMD:
1783 case SMATRIX_CMD:
1784 if (d->r!=currRing)
1785 {
1786 fputs("15 ",d->f_write);
1788 if (d->level<=1) fputc('\n',d->f_write);
1789 }
1790 if(tt==IDEAL_CMD) fputs("7 ",d->f_write);
1791 else if(tt==MATRIX_CMD) fputs("8 ",d->f_write);
1792 else if(tt==SMATRIX_CMD) fputs("22 ",d->f_write);
1793 else /* tt==MODUL_CMD*/
1794 {
1795 ideal M=(ideal)dd;
1796 fprintf(d->f_write,"10 %d ",(int)M->rank);
1797 }
1799 break;
1800 case COMMAND:
1801 fputs("11 ",d->f_write);
1803 break;
1804 case DEF_CMD: /* not evaluated stuff in quotes */
1805 fputs("12 ",d->f_write);
1806 ssiWriteString(d,data->Name());
1807 break;
1808 case PROC_CMD:
1809 fputs("13 ",d->f_write);
1811 break;
1812 case LIST_CMD:
1813 fputs("14 ",d->f_write);
1815 break;
1816 case INTVEC_CMD:
1817 fputs("17 ",d->f_write);
1818 ssiWriteIntvec(d,(intvec *)dd);
1819 break;
1820 case INTMAT_CMD:
1821 fputs("18 ",d->f_write);
1822 ssiWriteIntmat(d,(intvec *)dd);
1823 break;
1824 case BIGINTMAT_CMD:
1825 fputs("19 ",d->f_write);
1827 break;
1828 case BIGINTVEC_CMD:
1829 fputs("24 ",d->f_write);
1831 break;
1832 default:
1833 if (tt>MAX_TOK)
1834 {
1836 fputs("20 ",d->f_write);
1837 b->blackbox_serialize(b,dd,l);
1838 }
1839 else
1840 {
1841 Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp);
1842 d->level=0;
1843 return TRUE;
1844 }
1845 break;
1846 }
1847 if (d->level<=1) { fputc('\n',d->f_write); fflush(d->f_write); }
1848 data=data->next;
1849 }
1850 d->level--;
1851 return FALSE;
1852}
blackbox * getBlackboxStuff(const int t)
return the structure to the type given by t
Definition blackbox.cc:17
CanonicalForm b
Definition cfModGcd.cc:4111
Matrices of numbers.
Definition bigintmat.h:51
Definition attrib.h:21
attr next
Definition attrib.h:26
Definition lists.h:24
@ BUCKET_CMD
Definition grammar.cc:284
ip_command * command
Definition ipid.h:23
poly sBucketPeek(sBucket_pt b)
Definition sbuckets.cc:455
ring sBucketGetRing(const sBucket_pt bucket)
Returns bucket ring.
Definition sbuckets.cc:46
sBucket * sBucket_pt
Definition sbuckets.h:16