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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)
 
void singular_close_links ()
 

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 2314 of file ssiLink.cc.

2315{
2316 pid_t kidpid;
2317 int status;
2318
2319#if 0
2320 loop
2321 {
2323 if (kidpid==-1)
2324 {
2325 /* continue on interruption (EINTR): */
2326 if (errno == EINTR) continue;
2327 /* break on anything else (EINVAL or ECHILD according to manpage): */
2328 break;
2329 }
2330 else if (kidpid==0) break; /* no more children to process, so break */
2331
2332 //printf("Child %ld terminated\n", kidpid);
2334 while((hh!=NULL)&&(ssiToBeClosed_inactive))
2335 {
2336 if((hh->l!=NULL) && (hh->l->m->Open==ssiOpen))
2337 {
2338 ssiInfo *d = (ssiInfo *)hh->l->data;
2339 if(d->pid==kidpid)
2340 {
2342 {
2344 slClose(hh->l);
2346 break;
2347 }
2348 else break;
2349 }
2350 else hh=(link_list)hh->next;
2351 }
2352 else hh=(link_list)hh->next;
2353 }
2354 }
2355#endif
2356}
#define TRUE
Definition auxiliary.h:101
#define FALSE
Definition auxiliary.h:97
#define NULL
Definition omList.c:12
int * status
Definition si_signals.h:61
#define loop
Definition structs.h:71

◆ singular_close_links()

void singular_close_links ( )

Definition at line 2494 of file ssiLink.cc.

2495{
2497 while(hh!=NULL)
2498 {
2499 if ((hh->l->m!=NULL)
2500 && (hh->l->m->Open==ssiOpen)
2501 && SI_LINK_OPEN_P(hh->l)
2502 && (strcmp(hh->l->mode, "fork")==0))
2503 {
2505 ssiInfo *d = (ssiInfo *)hh->l->data;
2506 if (d->f_read!=NULL) { s_close(d->f_read);d->f_read=NULL;}
2507 if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
2508 }
2509 hh=(link_list)hh->next;
2510 }
2512}
int s_close(s_buff &F)
Definition s_buff.cc:45

◆ slInitSsiExtension()

si_link_extension slInitSsiExtension ( si_link_extension  s)

Definition at line 1872 of file ssiLink.cc.

1873{
1874 s->Open=ssiOpen;
1875 s->Close=ssiClose;
1876 s->Kill=ssiClose;
1877 s->Read=ssiRead1;
1878 s->Read2=(slRead2Proc)NULL;
1879 s->Write=ssiWrite;
1880 s->Dump=ssiDump;
1881 s->GetDump=ssiGetDump;
1882
1883 s->Status=slStatusSsi;
1884 s->SetRing=ssiSetRing;
1885 s->type="ssi";
1886 return s;
1887}
const CanonicalForm int s
Definition facAbsFact.cc:51

◆ slStatusSsi()

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

Definition at line 1889 of file ssiLink.cc.

1890{
1891 ssiInfo *d=(ssiInfo*)l->data;
1892 if (d==NULL) return "not open";
1893 if (((strcmp(l->mode,"fork")==0)
1894 ||(strcmp(l->mode,"tcp")==0)
1895 ||(strcmp(l->mode,"connect")==0))
1896 && (strcmp(request, "read") == 0))
1897 {
1898 if (s_isready(d->f_read)) return "ready";
1899#if defined(HAVE_POLL)
1900 pollfd pfd;
1901 loop
1902 {
1903 /* Don't block. Return socket status immediately. */
1904 pfd.fd=d->fd_read;
1905 pfd.events=POLLIN;
1906 //Print("test fd %d\n",d->fd_read);
1907 /* check with select: chars waiting: no -> not ready */
1908 switch (si_poll(&pfd,1,0))
1909 {
1910 case 0: /* not ready */ return "not ready";
1911 case -1: /*error*/ return "error";
1912 case 1: /*ready ? */ break;
1913 }
1914#else
1915 fd_set mask;
1916 struct timeval wt;
1917 if (FD_SETSIZE<=d->fd_read)
1918 {
1919 Werror("file descriptor number too high (%d)",d->fd_read);
1920 return "error";
1921 }
1922
1923 loop
1924 {
1925 /* Don't block. Return socket status immediately. */
1926 wt.tv_sec = 0;
1927 wt.tv_usec = 0;
1928
1929 FD_ZERO(&mask);
1930 FD_SET(d->fd_read, &mask);
1931 //Print("test fd %d\n",d->fd_read);
1932 /* check with select: chars waiting: no -> not ready */
1933 switch (si_select(d->fd_read+1, &mask, NULL, NULL, &wt))
1934 {
1935 case 0: /* not ready */ return "not ready";
1936 case -1: /*error*/ return "error";
1937 case 1: /*ready ? */ break;
1938 }
1939#endif
1940 /* yes: read 1 char*/
1941 /* if \n, check again with select else ungetc(c), ready*/
1942 int c=s_getc(d->f_read);
1943 //Print("try c=%d\n",c);
1944 if (c== -1) return "eof"; /* eof or error */
1945 else if (isdigit(c))
1946 { s_ungetc(c,d->f_read); return "ready"; }
1947 else if (c>' ')
1948 {
1949 Werror("unknown char in ssiLink(%d)",c);
1950 return "error";
1951 }
1952 /* else: next char */
1953 }
1954 }
1955 else if (strcmp(request, "read") == 0)
1956 {
1957 if (SI_LINK_R_OPEN_P(l) && (!s_iseof(d->f_read)) && (s_isready(d->f_read))) return "ready";
1958 else return "not ready";
1959 }
1960 else if (strcmp(request, "write") == 0)
1961 {
1962 if (SI_LINK_W_OPEN_P(l)) return "ready";
1963 else return "not ready";
1964 }
1965 else return "unknown status request";
1966}
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 1432 of file ssiLink.cc.

1433{
1434 if (l!=NULL)
1435 {
1437 ssiInfo *d = (ssiInfo *)l->data;
1438 if (d!=NULL)
1439 {
1440 // send quit signal
1441 if ((d->send_quit_at_exit)
1442 && (d->quit_sent==0))
1443 {
1444 fputs("99\n",d->f_write);
1445 fflush(d->f_write);
1446 d->quit_sent=1;
1447 }
1448 // clean ring
1449 if (d->r!=NULL) rKill(d->r);
1450 for(int i=0;i<SI_RING_CACHE;i++)
1451 {
1452 if (d->rings[i]!=NULL) rKill(d->rings[i]);
1453 d->rings[i]=NULL;
1454 }
1455 if (d->f_read!=NULL) { s_close(d->f_read);d->f_read=NULL;}
1456 if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1457 if (((strcmp(l->mode,"tcp")==0)
1458 || (strcmp(l->mode,"fork")==0))
1459 && (d->pid>1))
1460 {
1461 // did the child stop ?
1462 int pid=si_waitpid(d->pid,NULL,WNOHANG);
1463 if ((pid==0) /* no status change for child*/
1464 && (kill(d->pid,0)==0)) // child is still running
1465 {
1466 struct timespec t;
1467 struct timespec rem;
1468 // wait 60 sec
1469 for(int i=0;i<50;i++)
1470 {
1471 // wait till signal or 100ms:
1472 t.tv_sec=0;
1473 t.tv_nsec=100000000; // <=100 ms
1474 nanosleep(&t, &rem);
1475 // child finished ?
1476 if (si_waitpid(d->pid,NULL,WNOHANG) == d->pid) break;
1477 }
1478 if (kill(d->pid,0)==0) // child still exists
1479 {
1480 kill(d->pid,SIGTERM);
1481 t.tv_sec=1;
1482 t.tv_nsec=0; // <=1000 ms
1483 nanosleep(&t, &rem);
1484 si_waitpid(d->pid,NULL,WNOHANG);
1485 }
1486 }
1487 }
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:6164
void rem(unsigned long *a, unsigned long *q, unsigned long p, int &dega, int degq)
Definition minpoly.cc:572
#define omFreeSize(addr, size)
#define SI_RING_CACHE
Definition s_buff.h:30

◆ ssiCommandLink()

si_link ssiCommandLink ( )

Definition at line 2243 of file ssiLink.cc.

2244{
2245 if (ssiReserved_P==0)
2246 {
2247 WerrorS("ERROR no reserved port requested");
2248 return NULL;
2249 }
2250 struct sockaddr_in cli_addr;
2251 int clilen = sizeof(cli_addr);
2253 if(newsockfd < 0)
2254 {
2255 Werror("ERROR on accept (errno=%d)",errno);
2256 return NULL;
2257 }
2260 si_link_extension prev = s;
2261 while (strcmp(s->type, "ssi") != 0)
2262 {
2263 if (s->next == NULL)
2264 {
2265 prev = s;
2266 s = NULL;
2267 break;
2268 }
2269 else
2270 {
2271 s = s->next;
2272 }
2273 }
2274 if (s != NULL)
2275 l->m = s;
2276 else
2277 {
2279 prev->next=slInitSsiExtension(ns);
2280 l->m = prev->next;
2281 }
2282 l->name=omStrDup("");
2283 l->mode=omStrDup("tcp");
2284 l->ref=1;
2285 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
2286 l->data=d;
2287 d->fd_read = newsockfd;
2288 d->fd_write = newsockfd;
2289 d->f_read = s_open(newsockfd);
2290 d->f_write = fdopen(newsockfd, "w");
2293 if (ssiReserved_Clients<=0)
2294 {
2295 ssiReserved_P=0;
2297 }
2298 return l;
2299}
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 1000 of file ssiLink.cc.

1001{
1002 if (l!=NULL)
1003 {
1004 const char *mode;
1005 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
1006 if (flag & SI_LINK_OPEN)
1007 {
1008 if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0))
1009 flag = SI_LINK_READ;
1010 else flag = SI_LINK_WRITE;
1011 }
1012
1013 if (flag == SI_LINK_READ) mode = "r";
1014 else if (strcmp(l->mode, "w") == 0) mode = "w";
1015 else if (strcmp(l->mode, "fork") == 0) mode = "fork";
1016 else if (strcmp(l->mode, "tcp") == 0) mode = "tcp";
1017 else if (strcmp(l->mode, "connect") == 0) mode = "connect";
1018 else mode = "a";
1019
1020
1021 SI_LINK_SET_OPEN_P(l, flag);
1022 if(l->data!=NULL) omFreeSize(l->data,sizeof(ssiInfo));
1023 l->data=d;
1024 omFreeBinAddr(l->mode);
1025 l->mode = omStrDup(mode);
1026
1027 if (l->name[0] == '\0')
1028 {
1029 if (strcmp(mode,"fork")==0)
1030 {
1031 int pc[2];
1032 int cp[2];
1033 int err1=pipe(pc);
1034 int err2=pipe(cp);
1035 if (err1 || err2)
1036 {
1037 Werror("pipe failed with %d\n",errno);
1038 return TRUE;
1039 }
1041 n->u=u;
1042 n->l=l;
1043 n->next=(void *)ssiToBeClosed;
1044 ssiToBeClosed=n;
1045
1046 pid_t pid = fork();
1047 if (pid == -1 && errno == EAGAIN) // RLIMIT_NPROC too low?
1048 {
1050 pid = fork();
1051 }
1052 if (pid == -1)
1053 {
1054 WerrorS("could not fork");
1055 }
1056 if (pid==0) /*fork: child*/
1057 {
1058 /* block SIGINT */
1064 /* set #cpu to 1 for the child:*/
1066
1068 /* we know: l is the first entry in ssiToBeClosed-list */
1069 while(hh!=NULL)
1070 {
1072 ssiInfo *dd=(ssiInfo*)hh->l->data;
1073 s_close(dd->f_read);
1074 fclose(dd->f_write);
1075 if (dd->r!=NULL) rKill(dd->r);
1076 omFreeSize((ADDRESS)dd,(sizeof *dd));
1077 hh->l->data=NULL;
1078 link_list nn=(link_list)hh->next;
1079 omFree(hh);
1080 hh=nn;
1081 }
1083#ifdef HAVE_SIMPLEIPC
1085#endif // HAVE_SIMPLEIPC
1086 si_close(pc[1]); si_close(cp[0]);
1087 d->f_write=fdopen(cp[1],"w");
1088 d->f_read=s_open(pc[0]);
1089 d->fd_read=pc[0];
1090 d->fd_write=cp[1];
1091 //d->r=currRing;
1092 //if (d->r!=NULL) d->r->ref++;
1093 l->data=d;
1094 omFreeBinAddr(l->mode);
1095 l->mode = omStrDup(mode);
1098 //myynest=0;
1100 if ((u!=NULL)&&(u->rtyp==IDHDL))
1101 {
1102 idhdl h=(idhdl)u->data;
1103 h->lev=0;
1104 }
1105 loop
1106 {
1107 if (!SI_LINK_OPEN_P(l)) m2_end(0);
1108 if(d->f_read->is_eof) m2_end(0);
1109 leftv h=ssiRead1(l); /*contains an exit.... */
1110 if (feErrors != NULL && *feErrors != '\0')
1111 {
1112 // handle errors:
1113 PrintS(feErrors); /* currently quite simple */
1114 *feErrors = '\0';
1115 }
1116 ssiWrite(l,h);
1117 h->CleanUp();
1119 }
1120 /* never reached*/
1121 }
1122 else if (pid>0) /*fork: parent*/
1123 {
1124 d->pid=pid;
1125 si_close(pc[0]); si_close(cp[1]);
1126 d->f_write=fdopen(pc[1],"w");
1127 d->f_read=s_open(cp[0]);
1128 d->fd_read=cp[0];
1129 d->fd_write=pc[1];
1131 d->send_quit_at_exit=1;
1132 //d->r=currRing;
1133 //if (d->r!=NULL) d->r->ref++;
1134 }
1135 else
1136 {
1137 Werror("fork failed (%d)",errno);
1138 l->data=NULL;
1139 omFree(d);
1140 return TRUE;
1141 }
1142 }
1143 // ---------------------------------------------------------------------
1144 else if (strcmp(mode,"tcp")==0)
1145 {
1149 if(sockfd < 0)
1150 {
1151 WerrorS("ERROR opening socket");
1152 l->data=NULL;
1153 l->flags=0;
1154 omFree(d);
1155 return TRUE;
1156 }
1157 memset((char *) &serv_addr,0, sizeof(serv_addr));
1158 portno = 1025;
1159 serv_addr.sin_family = AF_INET;
1160 serv_addr.sin_addr.s_addr = INADDR_ANY;
1161 do
1162 {
1163 portno++;
1164 serv_addr.sin_port = htons(portno);
1165 if(portno > 50000)
1166 {
1167 WerrorS("ERROR on binding (no free port available?)");
1168 l->data=NULL;
1169 l->flags=0;
1170 omFree(d);
1171 return TRUE;
1172 }
1173 }
1174 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1175 Print("waiting on port %d\n", portno);mflush();
1176 listen(sockfd,1);
1178 if(newsockfd < 0)
1179 {
1180 WerrorS("ERROR on accept");
1181 l->data=NULL;
1182 l->flags=0;
1183 omFree(d);
1184 return TRUE;
1185 }
1186 PrintS("client accepted\n");
1187 d->fd_read = newsockfd;
1188 d->fd_write = newsockfd;
1189 d->f_read = s_open(newsockfd);
1190 d->f_write = fdopen(newsockfd, "w");
1193 }
1194 // no ssi-Link on stdin or stdout
1195 else
1196 {
1197 Werror("invalid mode >>%s<< for ssi",mode);
1198 l->data=NULL;
1199 l->flags=0;
1200 omFree(d);
1201 return TRUE;
1202 }
1203 }
1204 // =========================================================================
1205 else /*now l->name!=NULL*/
1206 {
1207 // tcp mode
1208 if(strcmp(mode,"tcp")==0)
1209 {
1213 if(sockfd < 0)
1214 {
1215 WerrorS("ERROR opening socket");
1216 l->data=NULL;
1217 l->flags=0;
1218 omFree(d);
1219 return TRUE;
1220 }
1221 memset((char *) &serv_addr,0, sizeof(serv_addr));
1222 portno = 1025;
1223 serv_addr.sin_family = AF_INET;
1224 serv_addr.sin_addr.s_addr = INADDR_ANY;
1225 do
1226 {
1227 portno++;
1228 serv_addr.sin_port = htons(portno);
1229 if(portno > 50000)
1230 {
1231 WerrorS("ERROR on binding (no free port available?)");
1232 l->data=NULL;
1233 l->flags=0;
1234 return TRUE;
1235 }
1236 }
1237 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1238 //Print("waiting on port %d\n", portno);mflush();
1239 listen(sockfd,1);
1240 char* cli_host = (char*)omAlloc(256);
1241 char* path = (char*)omAlloc(1024);
1242 int r = si_sscanf(l->name,"%255[^:]:%s",cli_host,path);
1243 if(r == 0)
1244 {
1245 WerrorS("ERROR: no host specified");
1246 l->data=NULL;
1247 l->flags=0;
1248 omFree(d);
1249 omFree(path);
1251 return TRUE;
1252 }
1253 else if(r == 1)
1254 {
1255 WarnS("program not specified, using /usr/local/bin/Singular");
1256 Warn("in line >>%s<<",my_yylinebuf);
1257 strcpy(path,"/usr/local/bin/Singular");
1258 }
1259 char* ssh_command = (char*)omAlloc(256);
1260 char* ser_host = (char*)omAlloc(64);
1261 if(strcmp(cli_host,"localhost")==0)
1262 strcpy(ser_host,"localhost");
1263 else
1265 if (strcmp(cli_host,"localhost")==0) /*avoid "ssh localhost" as key may change*/
1266 snprintf(ssh_command,256,"%s -q --batch --link=ssi --MPhost=%s --MPport=%d &",path,ser_host,portno);
1267 else
1268 snprintf(ssh_command,256,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno);
1269 //Print("client on %s started:%s\n",cli_host,path);
1270 omFree(path);
1272 if (TEST_OPT_PROT) { Print("running >>%s<<\n",ssh_command); }
1273 int re=system(ssh_command);
1274 if (re<0)
1275 {
1276 Werror("ERROR running `%s` (%d)",ssh_command,re);
1277 l->data=NULL;
1278 l->flags=0;
1279 omFree(d);
1280 return TRUE;
1281 }
1284 clilen = sizeof(cli_addr);
1286 if(newsockfd < 0)
1287 {
1288 WerrorS("ERROR on accept");
1289 l->data=NULL;
1290 l->flags=0;
1291 omFree(d);
1292 return TRUE;
1293 }
1294 //PrintS("client accepted\n");
1295 d->fd_read = newsockfd;
1296 d->fd_write = newsockfd;
1297 d->f_read = s_open(newsockfd);
1298 d->f_write = fdopen(newsockfd, "w");
1301 d->send_quit_at_exit=1;
1303 newlink->u=u;
1304 newlink->l=l;
1305 newlink->next=(void *)ssiToBeClosed;
1307 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1308 }
1309 // ----------------------------------------------------------------------
1310 else if(strcmp(mode,"connect")==0)
1311 {
1312 char* host = (char*)omAlloc(256);
1313 int sockfd, portno;
1314 struct sockaddr_in serv_addr;
1315 struct hostent *server;
1316
1317 si_sscanf(l->name,"%255[^:]:%d",host,&portno);
1318 //Print("connect to host %s, port %d\n",host,portno);mflush();
1319 if (portno!=0)
1320 {
1322 if (sockfd < 0)
1323 {
1324 WerrorS("ERROR opening socket");
1325 l->flags=0;
1326 return TRUE;
1327 }
1329 if (server == NULL)
1330 {
1331 WerrorS("ERROR, no such host");
1332 l->flags=0;
1333 return TRUE;
1334 }
1335 memset((char *) &serv_addr, 0, sizeof(serv_addr));
1336 serv_addr.sin_family = AF_INET;
1337 memcpy((char *)&serv_addr.sin_addr.s_addr,
1338 (char *)server->h_addr,
1339 server->h_length);
1340 serv_addr.sin_port = htons(portno);
1341 if (si_connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)
1342 {
1343 Werror("ERROR connecting(errno=%d)",errno);
1344 l->flags=0;
1345 return TRUE;
1346 }
1347 //PrintS("connected\n");mflush();
1348 d->f_read=s_open(sockfd);
1349 d->fd_read=sockfd;
1350 d->f_write=fdopen(sockfd,"w");
1351 d->fd_write=sockfd;
1353 omFree(host);
1354 }
1355 else
1356 {
1357 l->data=NULL;
1358 l->flags=0;
1359 omFree(d);
1360 return TRUE;
1361 }
1362 }
1363 // ======================================================================
1364 else
1365 {
1366 // normal link to a file
1367 if (FE_OPT_NO_SHELL_FLAG) {WerrorS("no links allowed");return TRUE;}
1368 FILE *outfile;
1369 char *filename=l->name;
1370
1371 if(filename[0]=='>')
1372 {
1373 if (filename[1]=='>')
1374 {
1375 filename+=2;
1376 mode = "a";
1377 }
1378 else
1379 {
1380 filename++;
1381 mode="w";
1382 }
1383 }
1384 outfile=myfopen(filename,mode);
1385 if (outfile!=NULL)
1386 {
1387 if (strcmp(l->mode,"r")==0)
1388 {
1389 fclose(outfile);
1390 d->f_read=s_open_by_name(filename);
1391 }
1392 else
1393 {
1394 d->f_write = outfile;
1395 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1396 }
1397 }
1398 else
1399 {
1400 omFree(d);
1401 l->data=NULL;
1402 l->flags=0;
1403 return TRUE;
1404 }
1405 }
1406 }
1407 }
1408
1409 return FALSE;
1410}
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
si_hdl_typ si_set_signal(int sig, si_hdl_typ signal_handler)
meta function for binding a signal to an handler
Definition cntrlc.cc:121
void sig_term_hdl(int)
Definition cntrlc.cc:77
#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:1102
#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:105
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 //Print("int: %d\n",(int)(long)res->data);
1533 break;
1534 case 2:res->rtyp=STRING_CMD;
1535 res->data=(char *)ssiReadString(d);
1536 //Print("str: %s\n",(char*)res->data);
1537 break;
1538 case 3:res->rtyp=NUMBER_CMD;
1539 if (d->r==NULL) goto no_ring;
1540 ssiCheckCurrRing(d->r);
1541 res->data=(char *)ssiReadNumber(d);
1542 //Print("number\n");
1543 break;
1544 case 4:res->rtyp=BIGINT_CMD;
1545 res->data=(char *)ssiReadBigInt(d);
1546 //Print("bigint\n");
1547 break;
1548 case 15:
1549 case 5:{
1550 //Print("ring %d\n",t);
1551 d->r=ssiReadRing(d);
1552 if (errorreported) return NULL;
1553 res->data=(char*)d->r;
1554 if (d->r!=NULL) rIncRefCnt(d->r);
1555 res->rtyp=RING_CMD;
1556 if (t==15) // setring
1557 {
1558 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1560 return ssiRead1(l);
1561 }
1562 }
1563 break;
1564 case 6:res->rtyp=POLY_CMD;
1565 //Print("poly\n");
1566 if (d->r==NULL) goto no_ring;
1567 ssiCheckCurrRing(d->r);
1568 res->data=(char*)ssiReadPoly(d);
1569 break;
1570 case 7:res->rtyp=IDEAL_CMD;
1571 //Print("ideal\n");
1572 if (d->r==NULL) goto no_ring;
1573 ssiCheckCurrRing(d->r);
1574 res->data=(char*)ssiReadIdeal(d);
1575 break;
1576 case 8:res->rtyp=MATRIX_CMD;
1577 //Print("matrix\n");
1578 if (d->r==NULL) goto no_ring;
1579 ssiCheckCurrRing(d->r);
1580 res->data=(char*)ssiReadMatrix(d);
1581 break;
1582 case 9:res->rtyp=VECTOR_CMD;
1583 //Print("vector\n");
1584 if (d->r==NULL) goto no_ring;
1585 ssiCheckCurrRing(d->r);
1586 res->data=(char*)ssiReadPoly(d);
1587 break;
1588 case 10:
1589 case 22:if (t==22) res->rtyp=SMATRIX_CMD;
1590 else res->rtyp=MODUL_CMD;
1591 //Print("module/smatrix %d\n",t);
1592 if (d->r==NULL) goto no_ring;
1593 ssiCheckCurrRing(d->r);
1594 {
1595 int rk=s_readint(d->f_read);
1596 ideal M=ssiReadIdeal(d);
1597 M->rank=rk;
1598 res->data=(char*)M;
1599 }
1600 break;
1601 case 11:
1602 {
1603 //Print("cmd\n",t);
1604 res->rtyp=COMMAND;
1605 res->data=ssiReadCommand(l);
1606 int nok=res->Eval();
1607 if (nok) WerrorS("error in eval");
1608 break;
1609 }
1610 case 12: /*DEF_CMD*/
1611 {
1612 //Print("def\n",t);
1613 res->rtyp=0;
1614 res->name=(char *)ssiReadString(d);
1615 int nok=res->Eval();
1616 if (nok) WerrorS("error in name lookup");
1617 break;
1618 }
1619 case 13: res->rtyp=PROC_CMD;
1620 res->data=ssiReadProc(d);
1621 break;
1622 case 14: res->rtyp=LIST_CMD;
1623 res->data=ssiReadList(l);
1624 break;
1625 case 16: res->rtyp=NONE; res->data=NULL;
1626 break;
1627 case 17: res->rtyp=INTVEC_CMD;
1628 res->data=ssiReadIntvec(d);
1629 break;
1630 case 18: res->rtyp=INTMAT_CMD;
1631 res->data=ssiReadIntmat(d);
1632 break;
1633 case 19: res->rtyp=BIGINTMAT_CMD;
1634 res->data=ssiReadBigintmat(d);
1635 break;
1636 case 20: ssiReadBlackbox(res,l);
1637 break;
1638 case 21: ssiReadAttrib(res,l);
1639 break;
1640 case 23: ssiReadRingProperties(l);
1641 return ssiRead1(l);
1642 break;
1643 case 24: res->rtyp=BIGINTVEC_CMD;
1644 res->data=ssiReadBigintvec(d);
1645 break;
1646 // ------------
1647 case 98: // version
1648 {
1649 int n98_v,n98_m;
1651 n98_v=s_readint(d->f_read);
1652 n98_m=s_readint(d->f_read);
1653 n98_o1=s_readint(d->f_read);
1654 n98_o2=s_readint(d->f_read);
1655 if ((n98_v!=SSI_VERSION) ||(n98_m!=MAX_TOK))
1656 {
1657 Print("incompatible versions of ssi: %d/%d vs %d/%d\n",
1659 }
1660 #ifndef SING_NDEBUG
1661 if (TEST_OPT_DEBUG)
1662 Print("// opening ssi-%d, MAX_TOK=%d\n",n98_v,n98_m);
1663 #endif
1667 return ssiRead1(l);
1668 }
1669 case 99: omFreeBin(res,sleftv_bin); ssiClose(l); m2_end(0);
1670 break; /*to make compiler happy*/
1671 case 0: if (s_iseof(d->f_read))
1672 {
1673 ssiClose(l);
1674 }
1675 res->rtyp=DEF_CMD;
1676 break;
1677 default: Werror("not implemented (t:%d)",t);
1679 res=NULL;
1680 break;
1681 }
1682 // if currRing is required for the result, but lost
1683 // define "ssiRing%d" as currRing:
1684 if ((d->r!=NULL)
1685 && (currRing!=d->r)
1686 && (res->RingDependend()))
1687 {
1688 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1689 }
1690 return res;
1691no_ring: WerrorS("no ring");
1693 return NULL;
1694}
#define BITSET
Definition auxiliary.h:85
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:110
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:847
int s_readint(s_buff F)
Definition s_buff.cc:112
#define M
Definition sirandom.c:25
sleftv * leftv
Definition structs.h:53
@ 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 2207 of file ssiLink.cc.

2208{
2209 if (ssiReserved_P!=0)
2210 {
2211 WerrorS("ERROR already a reserved port requested");
2212 return 0;
2213 }
2214 int portno;
2216 if(ssiReserved_sockfd < 0)
2217 {
2218 WerrorS("ERROR opening socket");
2219 return 0;
2220 }
2221 memset((char *) &ssiResverd_serv_addr,0, sizeof(ssiResverd_serv_addr));
2222 portno = 1025;
2223 ssiResverd_serv_addr.sin_family = AF_INET;
2224 ssiResverd_serv_addr.sin_addr.s_addr = INADDR_ANY;
2225 do
2226 {
2227 portno++;
2228 ssiResverd_serv_addr.sin_port = htons(portno);
2229 if(portno > 50000)
2230 {
2231 WerrorS("ERROR on binding (no free port available?)");
2232 return 0;
2233 }
2234 }
2239 return portno;
2240}

◆ ssiWrite()

BOOLEAN ssiWrite ( si_link  l,
leftv  v 
)

Definition at line 1715 of file ssiLink.cc.

1716{
1717 if(SI_LINK_W_OPEN_P(l)==0)
1719 ssiInfo *d = (ssiInfo *)l->data;
1720 d->level++;
1721 //FILE *fich=d->f;
1722 while (data!=NULL)
1723 {
1724 int tt=data->Typ();
1725 void *dd=data->Data();
1726 attr *aa=data->Attribute();
1727 if ((aa!=NULL) && ((*aa)!=NULL)) // n user attributes
1728 {
1729 attr a=*aa;
1730 int n=0;
1731 while(a!=NULL) { n++; a=a->next;}
1732 fprintf(d->f_write,"21 %d %d ",data->flag,n);
1733 }
1734 else if (data->flag!=0) // only "flag" attributes
1735 {
1736 fprintf(d->f_write,"21 %d 0 ",data->flag);
1737 }
1738 if ((dd==NULL) && (data->name!=NULL) && (tt==0)) tt=DEF_CMD;
1739 // return pure undefined names as def
1740
1741 switch(tt /*data->Typ()*/)
1742 {
1743 case 0: /*error*/
1744 case NONE/* nothing*/:fputs("16 ",d->f_write);
1745 break;
1746 case STRING_CMD: fputs("2 ",d->f_write);
1747 ssiWriteString(d,(char *)dd);
1748 break;
1749 case INT_CMD: fputs("1 ",d->f_write);
1750 ssiWriteInt(d,(int)(long)dd);
1751 break;
1752 case BIGINT_CMD:fputs("4 ",d->f_write);
1754 break;
1755 case NUMBER_CMD:
1756 if (d->r!=currRing)
1757 {
1758 fputs("15 ",d->f_write);
1760 if (d->level<=1) fputc('\n',d->f_write);
1761 }
1762 fputs("3 ",d->f_write);
1764 break;
1765 case RING_CMD:fputs("5 ",d->f_write);
1766 ssiWriteRing(d,(ring)dd);
1767 break;
1768 case BUCKET_CMD:
1769 {
1771 if (d->r!=sBucketGetRing(b))
1772 {
1773 fputs("15 ",d->f_write);
1775 if (d->level<=1) fputc('\n',d->f_write);
1776 }
1777 fputs("6 ",d->f_write);
1779 break;
1780 }
1781 case POLY_CMD:
1782 case VECTOR_CMD:
1783 if (d->r!=currRing)
1784 {
1785 fputs("15 ",d->f_write);
1787 if (d->level<=1) fputc('\n',d->f_write);
1788 }
1789 if(tt==POLY_CMD) fputs("6 ",d->f_write);
1790 else fputs("9 ",d->f_write);
1791 ssiWritePoly(d,tt,(poly)dd);
1792 break;
1793 case IDEAL_CMD:
1794 case MODUL_CMD:
1795 case MATRIX_CMD:
1796 case SMATRIX_CMD:
1797 if (d->r!=currRing)
1798 {
1799 fputs("15 ",d->f_write);
1801 if (d->level<=1) fputc('\n',d->f_write);
1802 }
1803 if(tt==IDEAL_CMD) fputs("7 ",d->f_write);
1804 else if(tt==MATRIX_CMD) fputs("8 ",d->f_write);
1805 else /* tt==MODUL_CMD, SMATRIX_CMD*/
1806 {
1807 ideal M=(ideal)dd;
1808 if (tt==MODUL_CMD)
1809 fprintf(d->f_write,"10 %d ",(int)M->rank);
1810 else /*(tt==SMATRIX_CMD)*/
1811 fprintf(d->f_write,"22 %d ",(int)M->rank);
1812 }
1814 break;
1815 case COMMAND:
1816 fputs("11 ",d->f_write);
1818 break;
1819 case DEF_CMD: /* not evaluated stuff in quotes */
1820 fputs("12 ",d->f_write);
1821 ssiWriteString(d,data->Name());
1822 break;
1823 case PROC_CMD:
1824 fputs("13 ",d->f_write);
1826 break;
1827 case LIST_CMD:
1828 fputs("14 ",d->f_write);
1830 break;
1831 case INTVEC_CMD:
1832 fputs("17 ",d->f_write);
1833 ssiWriteIntvec(d,(intvec *)dd);
1834 break;
1835 case INTMAT_CMD:
1836 fputs("18 ",d->f_write);
1837 ssiWriteIntmat(d,(intvec *)dd);
1838 break;
1839 case BIGINTMAT_CMD:
1840 fputs("19 ",d->f_write);
1842 break;
1843 case BIGINTVEC_CMD:
1844 fputs("24 ",d->f_write);
1846 break;
1847 default:
1848 if (tt>MAX_TOK)
1849 {
1851 fputs("20 ",d->f_write);
1852 b->blackbox_serialize(b,dd,l);
1853 }
1854 else
1855 {
1856 Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp);
1857 d->level=0;
1858 return TRUE;
1859 }
1860 break;
1861 }
1862 if (d->level<=1) { fputc('\n',d->f_write); fflush(d->f_write); }
1863 data=data->next;
1864 }
1865 d->level--;
1866 return FALSE;
1867}
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