My Project
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 char * slStatusSsi (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 More...
 
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 2202 of file ssiLink.cc.

2203{
2204 pid_t kidpid;
2205 int status;
2206
2207 loop
2208 {
2209 kidpid = si_waitpid(-1, &status, WNOHANG);
2210 if (kidpid==-1)
2211 {
2212 /* continue on interruption (EINTR): */
2213 if (errno == EINTR) continue;
2214 /* break on anything else (EINVAL or ECHILD according to manpage): */
2215 break;
2216 }
2217 else if (kidpid==0) break; /* no more children to process, so break */
2218
2219 //printf("Child %ld terminated\n", kidpid);
2221 while((hh!=NULL)&&(ssiToBeClosed_inactive))
2222 {
2223 if((hh->l!=NULL) && (hh->l->m->Open==ssiOpen))
2224 {
2225 ssiInfo *d = (ssiInfo *)hh->l->data;
2226 if(d->pid==kidpid)
2227 {
2229 {
2231 slClose(hh->l);
2233 break;
2234 }
2235 else break;
2236 }
2237 else hh=(link_list)hh->next;
2238 }
2239 else hh=(link_list)hh->next;
2240 }
2241 }
2242}
#define TRUE
Definition: auxiliary.h:100
#define FALSE
Definition: auxiliary.h:96
#define NULL
Definition: omList.c:12
pid_t pid
Definition: s_buff.h:25
Definition: s_buff.h:21
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 1815 of file ssiLink.cc.

1816{
1817 s->Open=ssiOpen;
1818 s->Close=ssiClose;
1819 s->Kill=ssiClose;
1820 s->Read=ssiRead1;
1821 s->Read2=(slRead2Proc)NULL;
1822 s->Write=ssiWrite;
1823 s->Dump=ssiDump;
1824 s->GetDump=ssiGetDump;
1825
1826 s->Status=slStatusSsi;
1827 s->SetRing=ssiSetRing;
1828 s->type="ssi";
1829 return s;
1830}
const CanonicalForm int s
Definition: facAbsFact.cc:51

◆ slStatusSsi()

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

Definition at line 1832 of file ssiLink.cc.

1833{
1834 ssiInfo *d=(ssiInfo*)l->data;
1835 if (d==NULL) return "not open";
1836 if (((strcmp(l->mode,"fork")==0)
1837 ||(strcmp(l->mode,"tcp")==0)
1838 ||(strcmp(l->mode,"connect")==0))
1839 && (strcmp(request, "read") == 0))
1840 {
1841 fd_set mask;
1842 struct timeval wt;
1843 if (s_isready(d->f_read)) return "ready";
1844 loop
1845 {
1846 /* Don't block. Return socket status immediately. */
1847 wt.tv_sec = 0;
1848 wt.tv_usec = 0;
1849
1850 FD_ZERO(&mask);
1851 FD_SET(d->fd_read, &mask);
1852 //Print("test fd %d\n",d->fd_read);
1853 /* check with select: chars waiting: no -> not ready */
1854 switch (si_select(d->fd_read+1, &mask, NULL, NULL, &wt))
1855 {
1856 case 0: /* not ready */ return "not ready";
1857 case -1: /*error*/ return "error";
1858 case 1: /*ready ? */ break;
1859 }
1860 /* yes: read 1 char*/
1861 /* if \n, check again with select else ungetc(c), ready*/
1862 int c=s_getc(d->f_read);
1863 //Print("try c=%d\n",c);
1864 if (c== -1) return "eof"; /* eof or error */
1865 else if (isdigit(c))
1866 { s_ungetc(c,d->f_read); return "ready"; }
1867 else if (c>' ')
1868 {
1869 Werror("unknown char in ssiLink(%d)",c);
1870 return "error";
1871 }
1872 /* else: next char */
1873 }
1874 }
1875 else if (strcmp(request, "read") == 0)
1876 {
1877 if (SI_LINK_R_OPEN_P(l) && (!s_iseof(d->f_read)) && (s_isready(d->f_read))) return "ready";
1878 else return "not ready";
1879 }
1880 else if (strcmp(request, "write") == 0)
1881 {
1882 if (SI_LINK_W_OPEN_P(l)) return "ready";
1883 else return "not ready";
1884 }
1885 else return "unknown status request";
1886}
int l
Definition: cfEzgcd.cc:100
if(!FE_OPT_NO_SHELL_FLAG)(void) system(sys)
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
s_buff f_read
Definition: s_buff.h:22
int fd_read
Definition: s_buff.h:26

◆ ssiClose()

BOOLEAN ssiClose ( si_link  l)

Definition at line 1387 of file ssiLink.cc.

1388{
1389 if (l!=NULL)
1390 {
1392 ssiInfo *d = (ssiInfo *)l->data;
1393 if (d!=NULL)
1394 {
1395 // send quit signal
1396 if ((d->send_quit_at_exit)
1397 && (d->quit_sent==0))
1398 {
1399 fputs("99\n",d->f_write);
1400 fflush(d->f_write);
1401 }
1402 // clean ring
1403 if (d->r!=NULL) rKill(d->r);
1404 for(int i=0;i<SI_RING_CACHE;i++)
1405 {
1406 if (d->rings[i]!=NULL) rKill(d->rings[i]);
1407 d->rings[i]=NULL;
1408 }
1409 // did the child to stop ?
1410 si_waitpid(d->pid,NULL,WNOHANG);
1411 if ((d->pid!=0)
1412 && (kill(d->pid,0)==0)) // child is still running
1413 {
1414 struct timespec t;
1415 t.tv_sec=0;
1416 t.tv_nsec=100000000; // <=100 ms
1417 struct timespec rem;
1418 int r;
1419 loop
1420 {
1421 // wait till signal or time rem:
1422 r = nanosleep(&t, &rem);
1423 t = rem;
1424 // child finished:
1425 if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1426 // other signal, waited s>= 100 ms:
1427 if ((r==0) || (errno != EINTR)) break;
1428 }
1429 if (kill(d->pid,0) == 0) // pid still exists
1430 {
1431 kill(d->pid,15);
1432 t.tv_sec=5; // <=5s
1433 t.tv_nsec=0;
1434 loop
1435 {
1436 // wait till signal or time rem:
1437 r = nanosleep(&t, &rem);
1438 t = rem;
1439 // child finished:
1440 if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1441 // other signal, waited s>= 5 s:
1442 if ((r==0) || (errno != EINTR)) break;
1443 }
1444 if (kill(d->pid,0) == 0)
1445 {
1446 kill(d->pid,9); // just to be sure
1447 si_waitpid(d->pid,NULL,0);
1448 }
1449 }
1450 }
1451 if (d->f_read!=NULL) { s_close(d->f_read);d->f_read=NULL;}
1452 if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1453 if ((strcmp(l->mode,"tcp")==0)
1454 || (strcmp(l->mode,"fork")==0))
1455 {
1457 if (hh!=NULL)
1458 {
1459 if (hh->l==l)
1460 {
1462 omFreeSize(hh,sizeof(link_struct));
1463 }
1464 else while(hh->next!=NULL)
1465 {
1466 link_list hhh=(link_list)hh->next;
1467 if (hhh->l==l)
1468 {
1469 hh->next=hhh->next;
1470 omFreeSize(hhh,sizeof(link_struct));
1471 break;
1472 }
1473 else
1474 hh=(link_list)hh->next;
1475 }
1476 }
1477 }
1478 omFreeSize((ADDRESS)d,(sizeof *d));
1479 }
1480 l->data=NULL;
1481 }
1482 return FALSE;
1483}
void * ADDRESS
Definition: auxiliary.h:119
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)
Definition: omAllocDecl.h:260
int s_close(s_buff &F)
Definition: s_buff.cc:45
ring rings[SI_RING_CACHE]
Definition: s_buff.h:31
#define SI_RING_CACHE
Definition: s_buff.h:30
char send_quit_at_exit
Definition: s_buff.h:28
char quit_sent
Definition: s_buff.h:29
FILE * f_write
Definition: s_buff.h:23
ring r
Definition: s_buff.h:24

◆ ssiCommandLink()

si_link ssiCommandLink ( )

Definition at line 2131 of file ssiLink.cc.

2132{
2133 if (ssiReserved_P==0)
2134 {
2135 WerrorS("ERROR no reserved port requested");
2136 return NULL;
2137 }
2138 struct sockaddr_in cli_addr;
2139 int clilen = sizeof(cli_addr);
2140 int newsockfd = si_accept(ssiReserved_sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
2141 if(newsockfd < 0)
2142 {
2143 Werror("ERROR on accept (errno=%d)",errno);
2144 return NULL;
2145 }
2147 si_link_extension s = si_link_root;
2148 si_link_extension prev = s;
2149 while (strcmp(s->type, "ssi") != 0)
2150 {
2151 if (s->next == NULL)
2152 {
2153 prev = s;
2154 s = NULL;
2155 break;
2156 }
2157 else
2158 {
2159 s = s->next;
2160 }
2161 }
2162 if (s != NULL)
2163 l->m = s;
2164 else
2165 {
2166 si_link_extension ns = (si_link_extension)omAlloc0Bin(s_si_link_extension_bin);
2167 prev->next=slInitSsiExtension(ns);
2168 l->m = prev->next;
2169 }
2170 l->name=omStrDup("");
2171 l->mode=omStrDup("tcp");
2172 l->ref=1;
2173 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
2174 l->data=d;
2175 d->fd_read = newsockfd;
2176 d->fd_write = newsockfd;
2177 d->f_read = s_open(newsockfd);
2178 d->f_write = fdopen(newsockfd, "w");
2181 if (ssiReserved_Clients<=0)
2182 {
2183 ssiReserved_P=0;
2184 si_close(ssiReserved_sockfd);
2185 }
2186 return l;
2187}
void WerrorS(const char *s)
Definition: feFopen.cc:24
#define omStrDup(s)
Definition: omAllocDecl.h:263
#define omAlloc0Bin(bin)
Definition: omAllocDecl.h:206
#define omAlloc0(size)
Definition: omAllocDecl.h:211
s_buff s_open(int fd)
Definition: s_buff.cc:31
int fd_write
Definition: s_buff.h:26

◆ ssiOpen()

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

Definition at line 973 of file ssiLink.cc.

974{
975 if (l!=NULL)
976 {
977 const char *mode;
978 ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
979 if (flag & SI_LINK_OPEN)
980 {
981 if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0))
982 flag = SI_LINK_READ;
983 else flag = SI_LINK_WRITE;
984 }
985
986 if (flag == SI_LINK_READ) mode = "r";
987 else if (strcmp(l->mode, "w") == 0) mode = "w";
988 else if (strcmp(l->mode, "fork") == 0) mode = "fork";
989 else if (strcmp(l->mode, "tcp") == 0) mode = "tcp";
990 else if (strcmp(l->mode, "connect") == 0) mode = "connect";
991 else mode = "a";
992
993
994 SI_LINK_SET_OPEN_P(l, flag);
995 if(l->data!=NULL) omFreeSize(l->data,sizeof(ssiInfo));
996 l->data=d;
997 omFreeBinAddr(l->mode);
998 l->mode = omStrDup(mode);
999
1000 if (l->name[0] == '\0')
1001 {
1002 if (strcmp(mode,"fork")==0)
1003 {
1005 n->u=u;
1006 n->l=l;
1007 n->next=(void *)ssiToBeClosed;
1008 ssiToBeClosed=n;
1009
1010 int pc[2];
1011 int cp[2];
1012 pipe(pc);
1013 pipe(cp);
1014 pid_t pid = fork();
1015 if (pid == -1 && errno == EAGAIN) // RLIMIT_NPROC too low?
1016 {
1018 pid = fork();
1019 }
1020 if (pid == -1)
1021 {
1022 WerrorS("could not fork");
1023 }
1024 if (pid==0) /*fork: child*/
1025 {
1026 /* block SIGINT */
1027 sigset_t sigint;
1028 sigemptyset(&sigint);
1029 sigaddset(&sigint, SIGINT);
1030 sigprocmask(SIG_BLOCK, &sigint, NULL);
1031 /* set #cpu to 1 for the child:*/
1032 feSetOptValue(FE_OPT_CPUS,1);
1033
1035 /* we know: l is the first entry in ssiToBeClosed-list */
1036 while(hh!=NULL)
1037 {
1039 ssiInfo *dd=(ssiInfo*)hh->l->data;
1040 s_close(dd->f_read);
1041 fclose(dd->f_write);
1042 if (dd->r!=NULL) rKill(dd->r);
1043 omFreeSize((ADDRESS)dd,(sizeof *dd));
1044 hh->l->data=NULL;
1045 link_list nn=(link_list)hh->next;
1046 omFree(hh);
1047 hh=nn;
1048 }
1050#ifdef HAVE_SIMPLEIPC
1051 memset(sem_acquired, 0, SIPC_MAX_SEMAPHORES*sizeof(sem_acquired[0]));
1052#endif // HAVE_SIMPLEIPC
1053 si_close(pc[1]); si_close(cp[0]);
1054 d->f_write=fdopen(cp[1],"w");
1055 d->f_read=s_open(pc[0]);
1056 d->fd_read=pc[0];
1057 d->fd_write=cp[1];
1058 //d->r=currRing;
1059 //if (d->r!=NULL) d->r->ref++;
1060 l->data=d;
1061 omFreeBinAddr(l->mode);
1062 l->mode = omStrDup(mode);
1065 //myynest=0;
1067 if ((u!=NULL)&&(u->rtyp==IDHDL))
1068 {
1069 idhdl h=(idhdl)u->data;
1070 h->lev=0;
1071 }
1072 loop
1073 {
1074 if (!SI_LINK_OPEN_P(l)) m2_end(0);
1075 if(d->f_read->is_eof) m2_end(0);
1076 leftv h=ssiRead1(l); /*contains an exit.... */
1077 if (feErrors != NULL && *feErrors != '\0')
1078 {
1079 // handle errors:
1080 PrintS(feErrors); /* currently quite simple */
1081 *feErrors = '\0';
1082 }
1083 ssiWrite(l,h);
1084 h->CleanUp();
1086 }
1087 /* never reached*/
1088 }
1089 else if (pid>0) /*fork: parent*/
1090 {
1091 d->pid=pid;
1092 si_close(pc[0]); si_close(cp[1]);
1093 d->f_write=fdopen(pc[1],"w");
1094 d->f_read=s_open(cp[0]);
1095 d->fd_read=cp[0];
1096 d->fd_write=pc[1];
1098 d->send_quit_at_exit=1;
1099 //d->r=currRing;
1100 //if (d->r!=NULL) d->r->ref++;
1101 }
1102 else
1103 {
1104 Werror("fork failed (%d)",errno);
1105 l->data=NULL;
1106 omFree(d);
1107 return TRUE;
1108 }
1109 }
1110 // ---------------------------------------------------------------------
1111 else if (strcmp(mode,"tcp")==0)
1112 {
1113 int sockfd, newsockfd, portno, clilen;
1114 struct sockaddr_in serv_addr, cli_addr;
1115 sockfd = socket(AF_INET, SOCK_STREAM, 0);
1116 if(sockfd < 0)
1117 {
1118 WerrorS("ERROR opening socket");
1119 l->data=NULL;
1120 l->flags=0;
1121 omFree(d);
1122 return TRUE;
1123 }
1124 memset((char *) &serv_addr,0, sizeof(serv_addr));
1125 portno = 1025;
1126 serv_addr.sin_family = AF_INET;
1127 serv_addr.sin_addr.s_addr = INADDR_ANY;
1128 do
1129 {
1130 portno++;
1131 serv_addr.sin_port = htons(portno);
1132 if(portno > 50000)
1133 {
1134 WerrorS("ERROR on binding (no free port available?)");
1135 l->data=NULL;
1136 l->flags=0;
1137 omFree(d);
1138 return TRUE;
1139 }
1140 }
1141 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1142 Print("waiting on port %d\n", portno);mflush();
1143 listen(sockfd,1);
1144 newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1145 if(newsockfd < 0)
1146 {
1147 WerrorS("ERROR on accept");
1148 l->data=NULL;
1149 l->flags=0;
1150 omFree(d);
1151 return TRUE;
1152 }
1153 PrintS("client accepted\n");
1154 d->fd_read = newsockfd;
1155 d->fd_write = newsockfd;
1156 d->f_read = s_open(newsockfd);
1157 d->f_write = fdopen(newsockfd, "w");
1159 si_close(sockfd);
1160 }
1161 // no ssi-Link on stdin or stdout
1162 else
1163 {
1164 Werror("invalid mode >>%s<< for ssi",mode);
1165 l->data=NULL;
1166 l->flags=0;
1167 omFree(d);
1168 return TRUE;
1169 }
1170 }
1171 // =========================================================================
1172 else /*l->name=NULL*/
1173 {
1174 // tcp mode
1175 if(strcmp(mode,"tcp")==0)
1176 {
1177 int sockfd, newsockfd, portno, clilen;
1178 struct sockaddr_in serv_addr, cli_addr;
1179 sockfd = socket(AF_INET, SOCK_STREAM, 0);
1180 if(sockfd < 0)
1181 {
1182 WerrorS("ERROR opening socket");
1183 l->data=NULL;
1184 l->flags=0;
1185 omFree(d);
1186 return TRUE;
1187 }
1188 memset((char *) &serv_addr,0, sizeof(serv_addr));
1189 portno = 1025;
1190 serv_addr.sin_family = AF_INET;
1191 serv_addr.sin_addr.s_addr = INADDR_ANY;
1192 do
1193 {
1194 portno++;
1195 serv_addr.sin_port = htons(portno);
1196 if(portno > 50000)
1197 {
1198 WerrorS("ERROR on binding (no free port available?)");
1199 l->data=NULL;
1200 l->flags=0;
1201 return TRUE;
1202 }
1203 }
1204 while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1205 //Print("waiting on port %d\n", portno);mflush();
1206 listen(sockfd,1);
1207 char* cli_host = (char*)omAlloc(256);
1208 char* path = (char*)omAlloc(1024);
1209 int r = si_sscanf(l->name,"%255[^:]:%s",cli_host,path);
1210 if(r == 0)
1211 {
1212 WerrorS("ERROR: no host specified");
1213 l->data=NULL;
1214 l->flags=0;
1215 omFree(d);
1216 omFree(path);
1217 omFree(cli_host);
1218 return TRUE;
1219 }
1220 else if(r == 1)
1221 {
1222 WarnS("program not specified, using /usr/local/bin/Singular");
1223 Warn("in line >>%s<<",my_yylinebuf);
1224 strcpy(path,"/usr/local/bin/Singular");
1225 }
1226 char* ssh_command = (char*)omAlloc(256);
1227 char* ser_host = (char*)omAlloc(64);
1228 gethostname(ser_host,64);
1229 if (strcmp(cli_host,"localhost")==0) /*avoid "ssh localhost" as key may change*/
1230 snprintf(ssh_command,256,"%s -q --batch --link=ssi --MPhost=%s --MPport=%d &",path,ser_host,portno);
1231 else
1232 snprintf(ssh_command,256,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno);
1233 //Print("client on %s started:%s\n",cli_host,path);
1234 omFree(path);
1235 omFree(cli_host);
1236 if (TEST_OPT_PROT) { Print("running >>%s<<\n",ssh_command); }
1237 system(ssh_command);
1238 omFree(ssh_command);
1239 omFree(ser_host);
1240 clilen = sizeof(cli_addr);
1241 newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1242 if(newsockfd < 0)
1243 {
1244 WerrorS("ERROR on accept");
1245 l->data=NULL;
1246 l->flags=0;
1247 omFree(d);
1248 return TRUE;
1249 }
1250 //PrintS("client accepted\n");
1251 d->fd_read = newsockfd;
1252 d->fd_write = newsockfd;
1253 d->f_read = s_open(newsockfd);
1254 d->f_write = fdopen(newsockfd, "w");
1255 si_close(sockfd);
1257 d->send_quit_at_exit=1;
1258 link_list newlink=(link_list)omAlloc(sizeof(link_struct));
1259 newlink->u=u;
1260 newlink->l=l;
1261 newlink->next=(void *)ssiToBeClosed;
1262 ssiToBeClosed=newlink;
1263 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1264 }
1265 // ----------------------------------------------------------------------
1266 else if(strcmp(mode,"connect")==0)
1267 {
1268 char* host = (char*)omAlloc(256);
1269 int sockfd, portno;
1270 struct sockaddr_in serv_addr;
1271 struct hostent *server;
1272
1273 si_sscanf(l->name,"%255[^:]:%d",host,&portno);
1274 //Print("connect to host %s, port %d\n",host,portno);mflush();
1275 if (portno!=0)
1276 {
1277 sockfd = socket(AF_INET, SOCK_STREAM, 0);
1278 if (sockfd < 0)
1279 {
1280 WerrorS("ERROR opening socket");
1281 l->flags=0;
1282 return TRUE;
1283 }
1284 server = gethostbyname(host);
1285 if (server == NULL)
1286 {
1287 WerrorS("ERROR, no such host");
1288 l->flags=0;
1289 return TRUE;
1290 }
1291 memset((char *) &serv_addr, 0, sizeof(serv_addr));
1292 serv_addr.sin_family = AF_INET;
1293 memcpy((char *)&serv_addr.sin_addr.s_addr,
1294 (char *)server->h_addr,
1295 server->h_length);
1296 serv_addr.sin_port = htons(portno);
1297 if (si_connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)
1298 {
1299 Werror("ERROR connecting(errno=%d)",errno);
1300 l->flags=0;
1301 return TRUE;
1302 }
1303 //PrintS("connected\n");mflush();
1304 d->f_read=s_open(sockfd);
1305 d->fd_read=sockfd;
1306 d->f_write=fdopen(sockfd,"w");
1307 d->fd_write=sockfd;
1309 omFree(host);
1310 }
1311 else
1312 {
1313 l->data=NULL;
1314 l->flags=0;
1315 omFree(d);
1316 return TRUE;
1317 }
1318 }
1319 // ======================================================================
1320 else
1321 {
1322 // normal link to a file
1323 FILE *outfile;
1324 char *filename=l->name;
1325
1326 if(filename[0]=='>')
1327 {
1328 if (filename[1]=='>')
1329 {
1330 filename+=2;
1331 mode = "a";
1332 }
1333 else
1334 {
1335 filename++;
1336 mode="w";
1337 }
1338 }
1339 outfile=myfopen(filename,mode);
1340 if (outfile!=NULL)
1341 {
1342 if (strcmp(l->mode,"r")==0)
1343 {
1344 fclose(outfile);
1345 d->f_read=s_open_by_name(filename);
1346 }
1347 else
1348 {
1349 d->f_write = outfile;
1350 fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1351 }
1352 }
1353 else
1354 {
1355 omFree(d);
1356 l->data=NULL;
1357 l->flags=0;
1358 return TRUE;
1359 }
1360 }
1361 }
1362 }
1363
1364 return FALSE;
1365}
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:1097
#define omAlloc(size)
Definition: omAllocDecl.h:210
#define omFree(addr)
Definition: omAllocDecl.h:261
#define omFreeBin(addr, bin)
Definition: omAllocDecl.h:259
#define omFreeBinAddr(addr)
Definition: omAllocDecl.h:258
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
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:218

◆ ssiRead1()

leftv ssiRead1 ( si_link  l)

Definition at line 1486 of file ssiLink.cc.

1487{
1488 ssiInfo *d = (ssiInfo *)l->data;
1490 int t=0;
1491 t=s_readint(d->f_read);
1492 //Print("got type %d\n",t);
1493 switch(t)
1494 {
1495 case 1:res->rtyp=INT_CMD;
1496 res->data=(char *)(long)ssiReadInt(d->f_read);
1497 break;
1498 case 2:res->rtyp=STRING_CMD;
1499 res->data=(char *)ssiReadString(d);
1500 break;
1501 case 3:res->rtyp=NUMBER_CMD;
1502 if (d->r==NULL) goto no_ring;
1503 ssiCheckCurrRing(d->r);
1504 res->data=(char *)ssiReadNumber(d);
1505 break;
1506 case 4:res->rtyp=BIGINT_CMD;
1507 res->data=(char *)ssiReadBigInt(d);
1508 break;
1509 case 15:
1510 case 5:{
1511 d->r=ssiReadRing(d);
1512 if (errorreported) return NULL;
1513 res->data=(char*)d->r;
1514 if (d->r!=NULL) rIncRefCnt(d->r);
1515 res->rtyp=RING_CMD;
1516 if (t==15) // setring
1517 {
1518 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1520 return ssiRead1(l);
1521 }
1522 }
1523 break;
1524 case 6:res->rtyp=POLY_CMD;
1525 if (d->r==NULL) goto no_ring;
1526 ssiCheckCurrRing(d->r);
1527 res->data=(char*)ssiReadPoly(d);
1528 break;
1529 case 7:res->rtyp=IDEAL_CMD;
1530 if (d->r==NULL) goto no_ring;
1531 ssiCheckCurrRing(d->r);
1532 res->data=(char*)ssiReadIdeal(d);
1533 break;
1534 case 8:res->rtyp=MATRIX_CMD;
1535 if (d->r==NULL) goto no_ring;
1536 ssiCheckCurrRing(d->r);
1537 res->data=(char*)ssiReadMatrix(d);
1538 break;
1539 case 9:res->rtyp=VECTOR_CMD;
1540 if (d->r==NULL) goto no_ring;
1541 ssiCheckCurrRing(d->r);
1542 res->data=(char*)ssiReadPoly(d);
1543 break;
1544 case 10:
1545 case 22:if (t==22) res->rtyp=SMATRIX_CMD;
1546 else res->rtyp=MODUL_CMD;
1547 if (d->r==NULL) goto no_ring;
1548 ssiCheckCurrRing(d->r);
1549 {
1550 int rk=s_readint(d->f_read);
1551 ideal M=ssiReadIdeal(d);
1552 M->rank=rk;
1553 res->data=(char*)M;
1554 }
1555 break;
1556 case 11:
1557 {
1558 res->rtyp=COMMAND;
1559 res->data=ssiReadCommand(l);
1560 int nok=res->Eval();
1561 if (nok) WerrorS("error in eval");
1562 break;
1563 }
1564 case 12: /*DEF_CMD*/
1565 {
1566 res->rtyp=0;
1567 res->name=(char *)ssiReadString(d);
1568 int nok=res->Eval();
1569 if (nok) WerrorS("error in name lookup");
1570 break;
1571 }
1572 case 13: res->rtyp=PROC_CMD;
1573 res->data=ssiReadProc(d);
1574 break;
1575 case 14: res->rtyp=LIST_CMD;
1576 res->data=ssiReadList(l);
1577 break;
1578 case 16: res->rtyp=NONE; res->data=NULL;
1579 break;
1580 case 17: res->rtyp=INTVEC_CMD;
1581 res->data=ssiReadIntvec(d);
1582 break;
1583 case 18: res->rtyp=INTMAT_CMD;
1584 res->data=ssiReadIntmat(d);
1585 break;
1586 case 19: res->rtyp=BIGINTMAT_CMD;
1587 res->data=ssiReadBigintmat(d);
1588 break;
1589 case 20: ssiReadBlackbox(res,l);
1590 break;
1591 case 21: ssiReadAttrib(res,l);
1592 break;
1593 case 23: ssiReadRingProperties(l);
1594 return ssiRead1(l);
1595 break;
1596 // ------------
1597 case 98: // version
1598 {
1599 int n98_v,n98_m;
1600 BITSET n98_o1,n98_o2;
1601 n98_v=s_readint(d->f_read);
1602 n98_m=s_readint(d->f_read);
1603 n98_o1=s_readint(d->f_read);
1604 n98_o2=s_readint(d->f_read);
1605 if ((n98_v!=SSI_VERSION) ||(n98_m!=MAX_TOK))
1606 {
1607 Print("incompatible versions of ssi: %d/%d vs %d/%d\n",
1608 SSI_VERSION,MAX_TOK,n98_v,n98_m);
1609 }
1610 #ifndef SING_NDEBUG
1611 if (TEST_OPT_DEBUG)
1612 Print("// opening ssi-%d, MAX_TOK=%d\n",n98_v,n98_m);
1613 #endif
1614 si_opt_1=n98_o1;
1615 si_opt_2=n98_o2;
1617 return ssiRead1(l);
1618 }
1619 case 99: omFreeBin(res,sleftv_bin); ssiClose(l); m2_end(0);
1620 case 0: if (s_iseof(d->f_read))
1621 {
1622 ssiClose(l);
1623 }
1624 res->rtyp=DEF_CMD;
1625 break;
1626 default: Werror("not implemented (t:%d)",t);
1628 res=NULL;
1629 break;
1630 }
1631 // if currRing is required for the result, but lost
1632 // define "ssiRing%d" as currRing:
1633 if ((d->r!=NULL)
1634 && (currRing!=d->r)
1635 && (res->RingDependend()))
1636 {
1637 if(ssiSetCurrRing(d->r)) { d->r=currRing; }
1638 }
1639 return res;
1640no_ring: WerrorS("no ring");
1642 return NULL;
1643}
CanonicalForm res
Definition: facAbsFact.cc:60
VAR short errorreported
Definition: feFopen.cc:23
@ IDEAL_CMD
Definition: grammar.cc:284
@ MATRIX_CMD
Definition: grammar.cc:286
@ BIGINTMAT_CMD
Definition: grammar.cc:278
@ PROC_CMD
Definition: grammar.cc:280
@ INTMAT_CMD
Definition: grammar.cc:279
@ MODUL_CMD
Definition: grammar.cc:287
@ SMATRIX_CMD
Definition: grammar.cc:291
@ VECTOR_CMD
Definition: grammar.cc:292
@ NUMBER_CMD
Definition: grammar.cc:288
@ POLY_CMD
Definition: grammar.cc:289
@ RING_CMD
Definition: grammar.cc:281
#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:840
int s_readint(s_buff F)
Definition: s_buff.cc:112
#define M
Definition: sirandom.c:25
#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:185
@ INT_CMD
Definition: tok.h:96
#define NONE
Definition: tok.h:221
#define COMMAND
Definition: tok.h:29

◆ ssiRead2()

leftv ssiRead2 ( si_link  l,
leftv  key 
)

◆ ssiReservePort()

int ssiReservePort ( int  clients)

Definition at line 2095 of file ssiLink.cc.

2096{
2097 if (ssiReserved_P!=0)
2098 {
2099 WerrorS("ERROR already a reserved port requested");
2100 return 0;
2101 }
2102 int portno;
2103 ssiReserved_sockfd = socket(AF_INET, SOCK_STREAM, 0);
2104 if(ssiReserved_sockfd < 0)
2105 {
2106 WerrorS("ERROR opening socket");
2107 return 0;
2108 }
2109 memset((char *) &ssiResverd_serv_addr,0, sizeof(ssiResverd_serv_addr));
2110 portno = 1025;
2111 ssiResverd_serv_addr.sin_family = AF_INET;
2112 ssiResverd_serv_addr.sin_addr.s_addr = INADDR_ANY;
2113 do
2114 {
2115 portno++;
2116 ssiResverd_serv_addr.sin_port = htons(portno);
2117 if(portno > 50000)
2118 {
2119 WerrorS("ERROR on binding (no free port available?)");
2120 return 0;
2121 }
2122 }
2123 while(bind(ssiReserved_sockfd, (struct sockaddr *) &ssiResverd_serv_addr, sizeof(ssiResverd_serv_addr)) < 0);
2124 ssiReserved_P=portno;
2125 listen(ssiReserved_sockfd,clients);
2126 ssiReserved_Clients=clients;
2127 return portno;
2128}

◆ ssiWrite()

BOOLEAN ssiWrite ( si_link  l,
leftv  v 
)

Definition at line 1664 of file ssiLink.cc.

1665{
1666 if(SI_LINK_W_OPEN_P(l)==0)
1668 ssiInfo *d = (ssiInfo *)l->data;
1669 d->level++;
1670 //FILE *fich=d->f;
1671 while (data!=NULL)
1672 {
1673 int tt=data->Typ();
1674 void *dd=data->Data();
1675 attr *aa=data->Attribute();
1676 if ((aa!=NULL) && ((*aa)!=NULL)) // n user attributes
1677 {
1678 attr a=*aa;
1679 int n=0;
1680 while(a!=NULL) { n++; a=a->next;}
1681 fprintf(d->f_write,"21 %d %d ",data->flag,n);
1682 }
1683 else if (data->flag!=0) // only "flag" attributes
1684 {
1685 fprintf(d->f_write,"21 %d 0 ",data->flag);
1686 }
1687 if ((dd==NULL) && (data->name!=NULL) && (tt==0)) tt=DEF_CMD;
1688 // return pure undefined names as def
1689
1690 switch(tt /*data->Typ()*/)
1691 {
1692 case 0: /*error*/
1693 case NONE/* nothing*/:fputs("16 ",d->f_write);
1694 break;
1695 case STRING_CMD: fputs("2 ",d->f_write);
1696 ssiWriteString(d,(char *)dd);
1697 break;
1698 case INT_CMD: fputs("1 ",d->f_write);
1699 ssiWriteInt(d,(int)(long)dd);
1700 break;
1701 case BIGINT_CMD:fputs("4 ",d->f_write);
1702 ssiWriteBigInt(d,(number)dd);
1703 break;
1704 case NUMBER_CMD:
1705 if (d->r!=currRing)
1706 {
1707 fputs("15 ",d->f_write);
1709 if (d->level<=1) fputc('\n',d->f_write);
1710 }
1711 fputs("3 ",d->f_write);
1712 ssiWriteNumber(d,(number)dd);
1713 break;
1714 case RING_CMD:fputs("5 ",d->f_write);
1715 ssiWriteRing(d,(ring)dd);
1716 break;
1717 case BUCKET_CMD:
1718 {
1720 if (d->r!=sBucketGetRing(b))
1721 {
1722 fputs("15 ",d->f_write);
1724 if (d->level<=1) fputc('\n',d->f_write);
1725 }
1726 fputs("6 ",d->f_write);
1727 ssiWritePoly(d,tt,sBucketPeek(b));
1728 break;
1729 }
1730 case POLY_CMD:
1731 case VECTOR_CMD:
1732 if (d->r!=currRing)
1733 {
1734 fputs("15 ",d->f_write);
1736 if (d->level<=1) fputc('\n',d->f_write);
1737 }
1738 if(tt==POLY_CMD) fputs("6 ",d->f_write);
1739 else fputs("9 ",d->f_write);
1740 ssiWritePoly(d,tt,(poly)dd);
1741 break;
1742 case IDEAL_CMD:
1743 case MODUL_CMD:
1744 case MATRIX_CMD:
1745 case SMATRIX_CMD:
1746 if (d->r!=currRing)
1747 {
1748 fputs("15 ",d->f_write);
1750 if (d->level<=1) fputc('\n',d->f_write);
1751 }
1752 if(tt==IDEAL_CMD) fputs("7 ",d->f_write);
1753 else if(tt==MATRIX_CMD) fputs("8 ",d->f_write);
1754 else if(tt==SMATRIX_CMD) fputs("22 ",d->f_write);
1755 else /* tt==MODUL_CMD*/
1756 {
1757 ideal M=(ideal)dd;
1758 fprintf(d->f_write,"10 %d ",(int)M->rank);
1759 }
1760 ssiWriteIdeal(d,tt,(ideal)dd);
1761 break;
1762 case COMMAND:
1763 fputs("11 ",d->f_write);
1765 break;
1766 case DEF_CMD: /* not evaluated stuff in quotes */
1767 fputs("12 ",d->f_write);
1768 ssiWriteString(d,data->Name());
1769 break;
1770 case PROC_CMD:
1771 fputs("13 ",d->f_write);
1772 ssiWriteProc(d,(procinfov)dd);
1773 break;
1774 case LIST_CMD:
1775 fputs("14 ",d->f_write);
1776 ssiWriteList(l,(lists)dd);
1777 break;
1778 case INTVEC_CMD:
1779 fputs("17 ",d->f_write);
1780 ssiWriteIntvec(d,(intvec *)dd);
1781 break;
1782 case INTMAT_CMD:
1783 fputs("18 ",d->f_write);
1784 ssiWriteIntmat(d,(intvec *)dd);
1785 break;
1786 case BIGINTMAT_CMD:
1787 fputs("19 ",d->f_write);
1789 break;
1790 default:
1791 if (tt>MAX_TOK)
1792 {
1793 blackbox *b=getBlackboxStuff(tt);
1794 fputs("20 ",d->f_write);
1795 b->blackbox_serialize(b,dd,l);
1796 }
1797 else
1798 {
1799 Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp);
1800 d->level=0;
1801 return TRUE;
1802 }
1803 break;
1804 }
1805 if (d->level<=1) { fputc('\n',d->f_write); fflush(d->f_write); }
1806 data=data->next;
1807 }
1808 d->level--;
1809 return FALSE;
1810}
blackbox * getBlackboxStuff(const int t)
return the structure to the type given by t
Definition: blackbox.cc:17
CanonicalForm b
Definition: cfModGcd.cc:4103
Matrices of numbers.
Definition: bigintmat.h:51
Definition: intvec.h:23
Definition: attrib.h:21
attr next
Definition: attrib.h:26
Definition: lists.h:24
@ BUCKET_CMD
Definition: grammar.cc:283
ip_command * command
Definition: ipid.h:23
while(1)
Definition: libparse.cc:1444
char level
Definition: s_buff.h:27
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