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...
 

Function Documentation

◆ sig_chld_hdl()

void sig_chld_hdl ( int  )

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 1969 of file ssiLink.cc.

1970 {
1971  pid_t kidpid;
1972  int status;
1973 
1974  loop
1975  {
1976  kidpid = si_waitpid(-1, &status, WNOHANG);
1977  if (kidpid==-1)
1978  {
1979  /* continue on interruption (EINTR): */
1980  if (errno == EINTR) continue;
1981  /* break on anything else (EINVAL or ECHILD according to manpage): */
1982  break;
1983  }
1984  else if (kidpid==0) break; /* no more children to process, so break */
1985 
1986  //printf("Child %ld terminated\n", kidpid);
1988  while((hh!=NULL)&&(ssiToBeClosed_inactive))
1989  {
1990  if((hh->l!=NULL) && (hh->l->m->Open==ssiOpen))
1991  {
1992  ssiInfo *d = (ssiInfo *)hh->l->data;
1993  if(d->pid==kidpid)
1994  {
1996  {
1998  slClose(hh->l);
2000  break;
2001  }
2002  else break;
2003  }
2004  else hh=(link_list)hh->next;
2005  }
2006  else hh=(link_list)hh->next;
2007  }
2008  }
2009 }
Definition: s_buff.h:20
#define FALSE
Definition: auxiliary.h:94
#define TRUE
Definition: auxiliary.h:98
pid_t pid
Definition: s_buff.h:25
#define loop
Definition: structs.h:80
#define NULL
Definition: omList.c:12
int * status
Definition: si_signals.h:51

◆ slInitSsiExtension()

si_link_extension slInitSsiExtension ( si_link_extension  s)

Definition at line 1582 of file ssiLink.cc.

1583 {
1584  s->Open=ssiOpen;
1585  s->Close=ssiClose;
1586  s->Kill=ssiClose;
1587  s->Read=ssiRead1;
1588  s->Read2=(slRead2Proc)NULL;
1589  s->Write=ssiWrite;
1590  s->Dump=ssiDump;
1591  s->GetDump=ssiGetDump;
1592 
1593  s->Status=slStatusSsi;
1594  s->SetRing=ssiSetRing;
1595  s->type="ssi";
1596  return s;
1597 }
const CanonicalForm int s
Definition: facAbsFact.cc:55
#define NULL
Definition: omList.c:12

◆ slStatusSsi()

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

Definition at line 1599 of file ssiLink.cc.

1600 {
1601  ssiInfo *d=(ssiInfo*)l->data;
1602  if (d==NULL) return "not open";
1603  if (((strcmp(l->mode,"fork")==0)
1604  ||(strcmp(l->mode,"tcp")==0)
1605  ||(strcmp(l->mode,"connect")==0))
1606  && (strcmp(request, "read") == 0))
1607  {
1608  fd_set mask;
1609  struct timeval wt;
1610  if (s_isready(d->f_read)) return "ready";
1611  loop
1612  {
1613  /* Don't block. Return socket status immediately. */
1614  wt.tv_sec = 0;
1615  wt.tv_usec = 0;
1616 
1617  FD_ZERO(&mask);
1618  FD_SET(d->fd_read, &mask);
1619  //Print("test fd %d\n",d->fd_read);
1620  /* check with select: chars waiting: no -> not ready */
1621  switch (si_select(d->fd_read+1, &mask, NULL, NULL, &wt))
1622  {
1623  case 0: /* not ready */ return "not ready";
1624  case -1: /*error*/ return "error";
1625  case 1: /*ready ? */ break;
1626  }
1627  /* yes: read 1 char*/
1628  /* if \n, check again with select else ungetc(c), ready*/
1629  int c=s_getc(d->f_read);
1630  //Print("try c=%d\n",c);
1631  if (c== -1) return "eof"; /* eof or error */
1632  else if (isdigit(c))
1633  { s_ungetc(c,d->f_read); return "ready"; }
1634  else if (c>' ')
1635  {
1636  Werror("unknown char in ssiLink(%d)",c);
1637  return "error";
1638  }
1639  /* else: next char */
1640  }
1641  }
1642  else if (strcmp(request, "read") == 0)
1643  {
1644  if (SI_LINK_R_OPEN_P(l) && (!s_iseof(d->f_read)) && (s_isready(d->f_read))) return "ready";
1645  else return "not ready";
1646  }
1647  else if (strcmp(request, "write") == 0)
1648  {
1649  if (SI_LINK_W_OPEN_P(l)) return "ready";
1650  else return "not ready";
1651  }
1652  else return "unknown status request";
1653 }
Definition: s_buff.h:20
#define loop
Definition: structs.h:80
int s_getc(s_buff F)
Definition: s_buff.cc:58
s_buff f_read
Definition: s_buff.h:22
if(yy_init)
Definition: libparse.cc:1418
void s_ungetc(int c, s_buff F)
Definition: s_buff.cc:99
int s_iseof(s_buff F)
Definition: s_buff.cc:252
#define NULL
Definition: omList.c:12
int fd_read
Definition: s_buff.h:26
int s_isready(s_buff F)
Definition: s_buff.cc:85
void Werror(const char *fmt,...)
Definition: reporter.cc:189
int l
Definition: cfEzgcd.cc:93

◆ ssiClose()

BOOLEAN ssiClose ( si_link  l)

Definition at line 1169 of file ssiLink.cc.

1170 {
1171  if (l!=NULL)
1172  {
1174  ssiInfo *d = (ssiInfo *)l->data;
1175  if (d!=NULL)
1176  {
1177  // send quit signal
1178  if ((d->send_quit_at_exit)
1179  && (d->quit_sent==0))
1180  {
1181  fputs("99\n",d->f_write);
1182  fflush(d->f_write);
1183  }
1184  // clean ring
1185  if (d->r!=NULL) rKill(d->r);
1186  // did the child to stop ?
1187  si_waitpid(d->pid,NULL,WNOHANG);
1188  if ((d->pid!=0)
1189  && (kill(d->pid,0)==0)) // child is still running
1190  {
1191  struct timespec t;
1192  t.tv_sec=0;
1193  t.tv_nsec=100000000; // <=100 ms
1194  struct timespec rem;
1195  int r;
1196  loop
1197  {
1198  // wait till signal or time rem:
1199  r = nanosleep(&t, &rem);
1200  t = rem;
1201  // child finished:
1202  if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1203  // other signal, waited s>= 100 ms:
1204  if ((r==0) || (errno != EINTR)) break;
1205  }
1206  if (kill(d->pid,0) == 0) // pid still exists
1207  {
1208  kill(d->pid,15);
1209  t.tv_sec=5; // <=5s
1210  t.tv_nsec=0;
1211  loop
1212  {
1213  // wait till signal or time rem:
1214  r = nanosleep(&t, &rem);
1215  t = rem;
1216  // child finished:
1217  if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1218  // other signal, waited s>= 5 s:
1219  if ((r==0) || (errno != EINTR)) break;
1220  }
1221  if (kill(d->pid,0) == 0)
1222  {
1223  kill(d->pid,9); // just to be sure
1224  si_waitpid(d->pid,NULL,0);
1225  }
1226  }
1227  }
1228  if (d->f_read!=NULL) { s_close(d->f_read);d->f_read=NULL;}
1229  if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1230  if ((strcmp(l->mode,"tcp")==0)
1231  || (strcmp(l->mode,"fork")==0))
1232  {
1234  if (hh!=NULL)
1235  {
1236  if (hh->l==l)
1237  {
1239  omFreeSize(hh,sizeof(link_struct));
1240  }
1241  else while(hh->next!=NULL)
1242  {
1243  link_list hhh=(link_list)hh->next;
1244  if (hhh->l==l)
1245  {
1246  hh->next=hhh->next;
1247  omFreeSize(hhh,sizeof(link_struct));
1248  break;
1249  }
1250  else
1251  hh=(link_list)hh->next;
1252  }
1253  }
1254  }
1255  omFreeSize((ADDRESS)d,(sizeof *d));
1256  }
1257  l->data=NULL;
1258  }
1259  return FALSE;
1260 }
Definition: s_buff.h:20
void rem(unsigned long *a, unsigned long *q, unsigned long p, int &dega, int degq)
Definition: minpoly.cc:572
char send_quit_at_exit
Definition: s_buff.h:28
#define FALSE
Definition: auxiliary.h:94
#define omFreeSize(addr, size)
Definition: omAllocDecl.h:260
pid_t pid
Definition: s_buff.h:25
void * ADDRESS
Definition: auxiliary.h:133
#define loop
Definition: structs.h:80
ring r
Definition: s_buff.h:24
int s_close(s_buff &F)
Definition: s_buff.cc:45
s_buff f_read
Definition: s_buff.h:22
if(yy_init)
Definition: libparse.cc:1418
void rKill(ring r)
Definition: ipshell.cc:6124
#define NULL
Definition: omList.c:12
FILE * f_write
Definition: s_buff.h:23
int l
Definition: cfEzgcd.cc:93
char quit_sent
Definition: s_buff.h:29

◆ ssiCommandLink()

si_link ssiCommandLink ( )

Definition at line 1898 of file ssiLink.cc.

1899 {
1900  if (ssiReserved_P==0)
1901  {
1902  WerrorS("ERROR no reverved port requested");
1903  return NULL;
1904  }
1905  struct sockaddr_in cli_addr;
1906  int clilen = sizeof(cli_addr);
1907  int newsockfd = si_accept(ssiReserved_sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1908  if(newsockfd < 0)
1909  {
1910  Werror("ERROR on accept (errno=%d)",errno);
1911  return NULL;
1912  }
1914  si_link_extension s = si_link_root;
1915  si_link_extension prev = s;
1916  while (strcmp(s->type, "ssi") != 0)
1917  {
1918  if (s->next == NULL)
1919  {
1920  prev = s;
1921  s = NULL;
1922  break;
1923  }
1924  else
1925  {
1926  s = s->next;
1927  }
1928  }
1929  if (s != NULL)
1930  l->m = s;
1931  else
1932  {
1933  si_link_extension ns = (si_link_extension)omAlloc0Bin(s_si_link_extension_bin);
1934  prev->next=slInitSsiExtension(ns);
1935  l->m = prev->next;
1936  }
1937  l->name=omStrDup("");
1938  l->mode=omStrDup("tcp");
1939  l->ref=1;
1940  ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
1941  l->data=d;
1942  d->fd_read = newsockfd;
1943  d->fd_write = newsockfd;
1944  d->f_read = s_open(newsockfd);
1945  d->f_write = fdopen(newsockfd, "w");
1948  if (ssiReserved_Clients<=0)
1949  {
1950  ssiReserved_P=0;
1951  si_close(ssiReserved_sockfd);
1952  }
1953  return l;
1954 }
Definition: s_buff.h:20
const CanonicalForm int s
Definition: facAbsFact.cc:55
int fd_write
Definition: s_buff.h:26
void WerrorS(const char *s)
Definition: feFopen.cc:24
s_buff f_read
Definition: s_buff.h:22
#define omAlloc0Bin(bin)
Definition: omAllocDecl.h:206
#define NULL
Definition: omList.c:12
FILE * f_write
Definition: s_buff.h:23
int fd_read
Definition: s_buff.h:26
void Werror(const char *fmt,...)
Definition: reporter.cc:189
#define omAlloc0(size)
Definition: omAllocDecl.h:211
int l
Definition: cfEzgcd.cc:93
s_buff s_open(int fd)
Definition: s_buff.cc:31
#define omStrDup(s)
Definition: omAllocDecl.h:263

◆ ssiOpen()

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

Definition at line 784 of file ssiLink.cc.

785 {
786  if (l!=NULL)
787  {
788  const char *mode;
789  ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
790  if (flag & SI_LINK_OPEN)
791  {
792  if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0))
793  flag = SI_LINK_READ;
794  else flag = SI_LINK_WRITE;
795  }
796 
797  if (flag == SI_LINK_READ) mode = "r";
798  else if (strcmp(l->mode, "w") == 0) mode = "w";
799  else if (strcmp(l->mode, "fork") == 0) mode = "fork";
800  else if (strcmp(l->mode, "tcp") == 0) mode = "tcp";
801  else if (strcmp(l->mode, "connect") == 0) mode = "connect";
802  else mode = "a";
803 
804 
805  SI_LINK_SET_OPEN_P(l, flag);
806  if(l->data!=NULL) omFreeSize(l->data,sizeof(ssiInfo));
807  l->data=d;
808  omFree(l->mode);
809  l->mode = omStrDup(mode);
810 
811  if (l->name[0] == '\0')
812  {
813  if (strcmp(mode,"fork")==0)
814  {
816  n->u=u;
817  n->l=l;
818  n->next=(void *)ssiToBeClosed;
819  ssiToBeClosed=n;
820 
821  int pc[2];
822  int cp[2];
823  pipe(pc);
824  pipe(cp);
825  pid_t pid = fork();
826  if (pid == -1 && errno == EAGAIN) // RLIMIT_NPROC too low?
827  {
829  pid = fork();
830  }
831  if (pid == -1)
832  {
833  WerrorS("could not fork");
834  }
835  if (pid==0) /*fork: child*/
836  {
837  /* block SIGINT */
838  sigset_t sigint;
839  sigemptyset(&sigint);
840  sigaddset(&sigint, SIGINT);
841  sigprocmask(SIG_BLOCK, &sigint, NULL);
842 
844  /* we know: l is the first entry in ssiToBeClosed-list */
845  while(hh!=NULL)
846  {
847  SI_LINK_SET_CLOSE_P(hh->l);
848  ssiInfo *dd=(ssiInfo*)hh->l->data;
849  s_close(dd->f_read);
850  fclose(dd->f_write);
851  if (dd->r!=NULL) rKill(dd->r);
852  omFreeSize((ADDRESS)dd,(sizeof *dd));
853  hh->l->data=NULL;
854  link_list nn=(link_list)hh->next;
855  omFree(hh);
856  hh=nn;
857  }
859 #ifdef HAVE_SIMPLEIPC
860  memset(sem_acquired, 0, SIPC_MAX_SEMAPHORES*sizeof(sem_acquired[0]));
861 #endif // HAVE_SIMPLEIPC
862  si_close(pc[1]); si_close(cp[0]);
863  d->f_write=fdopen(cp[1],"w");
864  d->f_read=s_open(pc[0]);
865  d->fd_read=pc[0];
866  d->fd_write=cp[1];
867  //d->r=currRing;
868  //if (d->r!=NULL) d->r->ref++;
869  l->data=d;
870  omFree(l->mode);
871  l->mode = omStrDup(mode);
874  //myynest=0;
876  if ((u!=NULL)&&(u->rtyp==IDHDL))
877  {
878  idhdl h=(idhdl)u->data;
879  h->lev=0;
880  }
881  loop
882  {
883  if (!SI_LINK_OPEN_P(l)) m2_end(0);
884  if(d->f_read->is_eof) m2_end(0);
885  leftv h=ssiRead1(l); /*contains an exit.... */
886  if (feErrors != NULL && *feErrors != '\0')
887  {
888  // handle errors:
889  PrintS(feErrors); /* currently quite simple */
890  *feErrors = '\0';
891  }
892  ssiWrite(l,h);
893  h->CleanUp();
894  omFreeBin(h, sleftv_bin);
895  }
896  /* never reached*/
897  }
898  else if (pid>0) /*fork: parent*/
899  {
900  d->pid=pid;
901  si_close(pc[0]); si_close(cp[1]);
902  d->f_write=fdopen(pc[1],"w");
903  d->f_read=s_open(cp[0]);
904  d->fd_read=cp[0];
905  d->fd_write=pc[1];
907  d->send_quit_at_exit=1;
908  //d->r=currRing;
909  //if (d->r!=NULL) d->r->ref++;
910  }
911  else
912  {
913  Werror("fork failed (%d)",errno);
914  l->data=NULL;
915  omFree(d);
916  return TRUE;
917  }
918  }
919  // ---------------------------------------------------------------------
920  else if (strcmp(mode,"tcp")==0)
921  {
922  int sockfd, newsockfd, portno, clilen;
923  struct sockaddr_in serv_addr, cli_addr;
924  sockfd = socket(AF_INET, SOCK_STREAM, 0);
925  if(sockfd < 0)
926  {
927  WerrorS("ERROR opening socket");
928  l->data=NULL;
929  omFree(d);
930  return TRUE;
931  }
932  memset((char *) &serv_addr,0, sizeof(serv_addr));
933  portno = 1025;
934  serv_addr.sin_family = AF_INET;
935  serv_addr.sin_addr.s_addr = INADDR_ANY;
936  do
937  {
938  portno++;
939  serv_addr.sin_port = htons(portno);
940  if(portno > 50000)
941  {
942  WerrorS("ERROR on binding (no free port available?)");
943  l->data=NULL;
944  omFree(d);
945  return TRUE;
946  }
947  }
948  while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
949  Print("waiting on port %d\n", portno);mflush();
950  listen(sockfd,1);
951  newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
952  if(newsockfd < 0)
953  {
954  WerrorS("ERROR on accept");
955  l->data=NULL;
956  omFree(d);
957  return TRUE;
958  }
959  PrintS("client accepted\n");
960  d->fd_read = newsockfd;
961  d->fd_write = newsockfd;
962  d->f_read = s_open(newsockfd);
963  d->f_write = fdopen(newsockfd, "w");
965  si_close(sockfd);
966  }
967  // no ssi-Link on stdin or stdout
968  else
969  {
970  Werror("invalid mode >>%s<< for ssi",mode);
971  l->data=NULL;
972  omFree(d);
973  return TRUE;
974  }
975  }
976  // =========================================================================
977  else /*l->name=NULL*/
978  {
979  // tcp mode
980  if(strcmp(mode,"tcp")==0)
981  {
982  int sockfd, newsockfd, portno, clilen;
983  struct sockaddr_in serv_addr, cli_addr;
984  sockfd = socket(AF_INET, SOCK_STREAM, 0);
985  if(sockfd < 0)
986  {
987  WerrorS("ERROR opening socket");
988  l->data=NULL;
989  omFree(d);
990  return TRUE;
991  }
992  memset((char *) &serv_addr,0, sizeof(serv_addr));
993  portno = 1025;
994  serv_addr.sin_family = AF_INET;
995  serv_addr.sin_addr.s_addr = INADDR_ANY;
996  do
997  {
998  portno++;
999  serv_addr.sin_port = htons(portno);
1000  if(portno > 50000)
1001  {
1002  WerrorS("ERROR on binding (no free port available?)");
1003  l->data=NULL;
1004  return TRUE;
1005  }
1006  }
1007  while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
1008  //Print("waiting on port %d\n", portno);mflush();
1009  listen(sockfd,1);
1010  char* cli_host = (char*)omAlloc(256);
1011  char* path = (char*)omAlloc(1024);
1012  int r = si_sscanf(l->name,"%255[^:]:%s",cli_host,path);
1013  if(r == 0)
1014  {
1015  WerrorS("ERROR: no host specified");
1016  l->data=NULL;
1017  omFree(d);
1018  omFree(path);
1019  omFree(cli_host);
1020  return TRUE;
1021  }
1022  else if(r == 1)
1023  {
1024  WarnS("program not specified, using /usr/local/bin/Singular");
1025  Warn("in line >>%s<<",my_yylinebuf);
1026  strcpy(path,"/usr/local/bin/Singular");
1027  }
1028  char* ssh_command = (char*)omAlloc(256);
1029  char* ser_host = (char*)omAlloc(64);
1030  gethostname(ser_host,64);
1031  sprintf(ssh_command,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno);
1032  //Print("client on %s started:%s\n",cli_host,path);
1033  omFree(path);
1034  omFree(cli_host);
1035  if (TEST_OPT_PROT) { Print("running >>%s<<\n",ssh_command); }
1036  system(ssh_command);
1037  omFree(ssh_command);
1038  omFree(ser_host);
1039  clilen = sizeof(cli_addr);
1040  newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1041  if(newsockfd < 0)
1042  {
1043  WerrorS("ERROR on accept");
1044  l->data=NULL;
1045  omFree(d);
1046  return TRUE;
1047  }
1048  //PrintS("client accepted\n");
1049  d->fd_read = newsockfd;
1050  d->fd_write = newsockfd;
1051  d->f_read = s_open(newsockfd);
1052  d->f_write = fdopen(newsockfd, "w");
1053  si_close(sockfd);
1055  d->send_quit_at_exit=1;
1056  link_list newlink=(link_list)omAlloc(sizeof(link_struct));
1057  newlink->u=u;
1058  newlink->l=l;
1059  newlink->next=(void *)ssiToBeClosed;
1060  ssiToBeClosed=newlink;
1061  fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1062  }
1063  // ----------------------------------------------------------------------
1064  else if(strcmp(mode,"connect")==0)
1065  {
1066  char* host = (char*)omAlloc(256);
1067  int sockfd, portno;
1068  struct sockaddr_in serv_addr;
1069  struct hostent *server;
1070 
1071  si_sscanf(l->name,"%255[^:]:%d",host,&portno);
1072  //Print("connect to host %s, port %d\n",host,portno);mflush();
1073  if (portno!=0)
1074  {
1075  sockfd = socket(AF_INET, SOCK_STREAM, 0);
1076  if (sockfd < 0) { WerrorS("ERROR opening socket"); return TRUE; }
1077  server = gethostbyname(host);
1078  if (server == NULL) { WerrorS("ERROR, no such host"); return TRUE; }
1079  memset((char *) &serv_addr, 0, sizeof(serv_addr));
1080  serv_addr.sin_family = AF_INET;
1081  memcpy((char *)&serv_addr.sin_addr.s_addr,
1082  (char *)server->h_addr,
1083  server->h_length);
1084  serv_addr.sin_port = htons(portno);
1085  if (si_connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)
1086  { Werror("ERROR connecting(errno=%d)",errno); return TRUE; }
1087  //PrintS("connected\n");mflush();
1088  d->f_read=s_open(sockfd);
1089  d->fd_read=sockfd;
1090  d->f_write=fdopen(sockfd,"w");
1091  d->fd_write=sockfd;
1093  omFree(host);
1094  }
1095  else
1096  {
1097  l->data=NULL;
1098  omFree(d);
1099  return TRUE;
1100  }
1101  }
1102  // ======================================================================
1103  else
1104  {
1105  // normal link to a file
1106  FILE *outfile;
1107  char *filename=l->name;
1108 
1109  if(filename[0]=='>')
1110  {
1111  if (filename[1]=='>')
1112  {
1113  filename+=2;
1114  mode = "a";
1115  }
1116  else
1117  {
1118  filename++;
1119  mode="w";
1120  }
1121  }
1122  outfile=myfopen(filename,mode);
1123  if (outfile!=NULL)
1124  {
1125  if (strcmp(l->mode,"r")==0)
1126  {
1127  fclose(outfile);
1128  d->f_read=s_open_by_name(filename);
1129  }
1130  else
1131  {
1132  d->f_write = outfile;
1133  fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1134  }
1135  }
1136  else
1137  {
1138  omFree(d);
1139  l->data=NULL;
1140  return TRUE;
1141  }
1142  }
1143  }
1144  }
1145 
1146  return FALSE;
1147 }
Definition: s_buff.h:20
unsigned si_opt_1
Definition: options.c:5
char *(* fe_fgets_stdin)(const char *pr, char *s, int size)
Definition: feread.cc:34
Class used for (list of) interpreter objects.
Definition: subexpr.h:82
#define Print
Definition: emacs.cc:80
int fd_write
Definition: s_buff.h:26
#define TEST_OPT_PROT
Definition: options.h:102
char send_quit_at_exit
Definition: s_buff.h:28
#define FALSE
Definition: auxiliary.h:94
Definition: tok.h:216
#define omFreeSize(addr, size)
Definition: omAllocDecl.h:260
char * fe_fgets_dummy(const char *, char *, int)
Definition: feread.cc:451
#define TRUE
Definition: auxiliary.h:98
pid_t pid
Definition: s_buff.h:25
void * ADDRESS
Definition: auxiliary.h:133
void WerrorS(const char *s)
Definition: feFopen.cc:24
#define loop
Definition: structs.h:80
ring r
Definition: s_buff.h:24
int s_close(s_buff &F)
Definition: s_buff.cc:45
#define WarnS
Definition: emacs.cc:78
#define omAlloc(size)
Definition: omAllocDecl.h:210
Definition: idrec.h:34
#define IDHDL
Definition: tok.h:31
void * data
Definition: subexpr.h:88
#define mflush()
Definition: reporter.h:57
char * feErrors
Definition: reporter.cc:47
char my_yylinebuf[80]
Definition: febase.cc:43
s_buff f_read
Definition: s_buff.h:22
BOOLEAN singular_in_batchmode
Definition: cntrlc.cc:65
void rKill(ring r)
Definition: ipshell.cc:6124
#define omFree(addr)
Definition: omAllocDecl.h:261
FILE * myfopen(const char *path, const char *mode)
Definition: feFopen.cc:167
void system(sys)
int raise_rlimit_nproc()
Definition: rlimit.c:18
idrec * idhdl
Definition: ring.h:21
omBin sleftv_bin
Definition: subexpr.cc:41
void PrintS(const char *s)
Definition: reporter.cc:284
void m2_end(int i)
Definition: misc_ip.cc:1096
#define NULL
Definition: omList.c:12
FILE * f_write
Definition: s_buff.h:23
short lev
Definition: idrec.h:45
int rtyp
Definition: subexpr.h:91
#define SIPC_MAX_SEMAPHORES
Definition: simpleipc.h:10
void CleanUp(ring r=currRing)
Definition: subexpr.cc:348
int fd_read
Definition: s_buff.h:26
#define omFreeBin(addr, bin)
Definition: omAllocDecl.h:259
int sem_acquired[SIPC_MAX_SEMAPHORES]
Definition: semaphore.c:25
s_buff s_open_by_name(const char *n)
Definition: s_buff.cc:39
unsigned si_opt_2
Definition: options.c:6
static Poly * h
Definition: janet.cc:971
void Werror(const char *fmt,...)
Definition: reporter.cc:189
#define omAlloc0(size)
Definition: omAllocDecl.h:211
int l
Definition: cfEzgcd.cc:93
s_buff s_open(int fd)
Definition: s_buff.cc:31
#define Warn
Definition: emacs.cc:77
#define omStrDup(s)
Definition: omAllocDecl.h:263

◆ ssiRead1()

leftv ssiRead1 ( si_link  l)

Definition at line 1263 of file ssiLink.cc.

1264 {
1265  ssiInfo *d = (ssiInfo *)l->data;
1267  int t=0;
1268  t=s_readint(d->f_read);
1269  //Print("got type %d\n",t);
1270  switch(t)
1271  {
1272  case 1:res->rtyp=INT_CMD;
1273  res->data=(char *)(long)ssiReadInt(d->f_read);
1274  break;
1275  case 2:res->rtyp=STRING_CMD;
1276  res->data=(char *)ssiReadString(d);
1277  break;
1278  case 3:res->rtyp=NUMBER_CMD;
1279  res->data=(char *)ssiReadNumber(d);
1280  break;
1281  case 4:res->rtyp=BIGINT_CMD;
1282  res->data=(char *)ssiReadBigInt(d);
1283  break;
1284  case 15:
1285  case 5:{
1286  d->r=ssiReadRing(d);
1287  if (d->r==NULL) return NULL;
1288  res->data=(char*)d->r;
1289  res->rtyp=RING_CMD;
1290  if (t==15) // setring
1291  {
1292  if(ssiSetCurrRing(d->r)) { d->r=currRing; d->r->ref++; }
1294  return ssiRead1(l);
1295  }
1296  }
1297  break;
1298  case 6:res->rtyp=POLY_CMD;
1299  if (d->r==NULL) goto no_ring;
1300  res->data=(char*)ssiReadPoly(d);
1301  break;
1302  case 7:res->rtyp=IDEAL_CMD;
1303  if (d->r==NULL) goto no_ring;
1304  res->data=(char*)ssiReadIdeal(d);
1305  break;
1306  case 8:res->rtyp=MATRIX_CMD;
1307  if (d->r==NULL) goto no_ring;
1308  res->data=(char*)ssiReadMatrix(d);
1309  break;
1310  case 9:res->rtyp=VECTOR_CMD;
1311  if (d->r==NULL) goto no_ring;
1312  res->data=(char*)ssiReadPoly(d);
1313  break;
1314  case 10:
1315  case 22:if (t==22) res->rtyp=SMATRIX_CMD;
1316  else res->rtyp=MODUL_CMD;
1317  if (d->r==NULL) goto no_ring;
1318  {
1319  int rk=s_readint(d->f_read);
1320  ideal M=ssiReadIdeal(d);
1321  M->rank=rk;
1322  res->data=(char*)M;
1323  }
1324  break;
1325  case 11:
1326  {
1327  res->rtyp=COMMAND;
1328  res->data=ssiReadCommand(l);
1329  int nok=res->Eval();
1330  if (nok) WerrorS("error in eval");
1331  break;
1332  }
1333  case 12: /*DEF_CMD*/
1334  {
1335  res->rtyp=0;
1336  res->name=(char *)ssiReadString(d);
1337  int nok=res->Eval();
1338  if (nok) WerrorS("error in name lookup");
1339  break;
1340  }
1341  case 13: res->rtyp=PROC_CMD;
1342  res->data=ssiReadProc(d);
1343  break;
1344  case 14: res->rtyp=LIST_CMD;
1345  res->data=ssiReadList(l);
1346  break;
1347  case 16: res->rtyp=NONE; res->data=NULL;
1348  break;
1349  case 17: res->rtyp=INTVEC_CMD;
1350  res->data=ssiReadIntvec(d);
1351  break;
1352  case 18: res->rtyp=INTMAT_CMD;
1353  res->data=ssiReadIntmat(d);
1354  break;
1355  case 19: res->rtyp=BIGINTMAT_CMD;
1356  res->data=ssiReadBigintmat(d);
1357  break;
1358  case 20: ssiReadBlackbox(res,l);
1359  break;
1360  case 21: ssiReadAttrib(res,l);
1361  break;
1362  // ------------
1363  case 98: // version
1364  {
1365  int n98_v,n98_m;
1366  BITSET n98_o1,n98_o2;
1367  n98_v=s_readint(d->f_read);
1368  n98_m=s_readint(d->f_read);
1369  n98_o1=s_readint(d->f_read);
1370  n98_o2=s_readint(d->f_read);
1371  if ((n98_v!=SSI_VERSION) ||(n98_m!=MAX_TOK))
1372  {
1373  Print("incompatible versions of ssi: %d/%d vs %d/%d\n",
1374  SSI_VERSION,MAX_TOK,n98_v,n98_m);
1375  }
1376  #ifndef SING_NDEBUG
1377  if (TEST_OPT_DEBUG)
1378  Print("// opening ssi-%d, MAX_TOK=%d\n",n98_v,n98_m);
1379  #endif
1380  si_opt_1=n98_o1;
1381  si_opt_2=n98_o2;
1383  return ssiRead1(l);
1384  }
1385  case 99: omFreeBin(res,sleftv_bin); ssiClose(l); m2_end(0);
1386  case 0: if (s_iseof(d->f_read))
1387  {
1388  ssiClose(l);
1389  }
1390  res->rtyp=DEF_CMD;
1391  break;
1392  default: Werror("not implemented (t:%d)",t);
1394  res=NULL;
1395  break;
1396  }
1397  // if currRing is required for the result, but lost
1398  // define "ssiRing%d" as currRing:
1399  if ((d->r!=NULL)
1400  && (currRing!=d->r)
1401  && (res->RingDependend()))
1402  {
1403  if(ssiSetCurrRing(d->r)) { d->r=currRing; d->r->ref++; }
1404  }
1405  return res;
1406 no_ring: WerrorS("no ring");
1408  return NULL;
1409 }
Definition: s_buff.h:20
unsigned si_opt_1
Definition: options.c:5
Class used for (list of) interpreter objects.
Definition: subexpr.h:82
#define Print
Definition: emacs.cc:80
Definition: tok.h:96
Definition: tok.h:38
Definition: tok.h:216
void WerrorS(const char *s)
Definition: feFopen.cc:24
#define TEST_OPT_DEBUG
Definition: options.h:107
ring r
Definition: s_buff.h:24
#define BITSET
Definition: structs.h:20
#define M
Definition: sirandom.c:24
s_buff f_read
Definition: s_buff.h:22
if(yy_init)
Definition: libparse.cc:1418
CanonicalForm res
Definition: facAbsFact.cc:64
int s_readint(s_buff F)
Definition: s_buff.cc:112
Definition: tok.h:58
omBin sleftv_bin
Definition: subexpr.cc:41
int s_iseof(s_buff F)
Definition: s_buff.cc:252
#define omAlloc0Bin(bin)
Definition: omAllocDecl.h:206
void m2_end(int i)
Definition: misc_ip.cc:1096
#define NULL
Definition: omList.c:12
ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition: polys.cc:12
Definition: tok.h:118
#define omFreeBin(addr, bin)
Definition: omAllocDecl.h:259
unsigned si_opt_2
Definition: options.c:6
#define NONE
Definition: tok.h:219
void Werror(const char *fmt,...)
Definition: reporter.cc:189
int l
Definition: cfEzgcd.cc:93
#define COMMAND
Definition: tok.h:29

◆ ssiRead2()

leftv ssiRead2 ( si_link  l,
leftv  key 
)

◆ ssiWrite()

BOOLEAN ssiWrite ( si_link  l,
leftv  v 
)

Definition at line 1430 of file ssiLink.cc.

1431 {
1432  if(SI_LINK_W_OPEN_P(l)==0)
1433  if (slOpen(l,SI_LINK_OPEN|SI_LINK_WRITE,NULL)) return TRUE;
1434  ssiInfo *d = (ssiInfo *)l->data;
1435  d->level++;
1436  //FILE *fich=d->f;
1437  while (data!=NULL)
1438  {
1439  int tt=data->Typ();
1440  void *dd=data->Data();
1441  attr *aa=data->Attribute();
1442  BOOLEAN with_attr=FALSE;
1443  if ((aa!=NULL) && ((*aa)!=NULL))
1444  {
1445  attr a=*aa;
1446  int n=0;
1447  while(a!=NULL) { n++; a=a->next;}
1448  fprintf(d->f_write,"21 %d %d ",data->flag,n);
1449  }
1450  else if (data->flag!=0)
1451  {
1452  fprintf(d->f_write,"21 %d 0 ",data->flag);
1453  }
1454  if ((dd==NULL) && (data->name!=NULL) && (tt==0)) tt=DEF_CMD;
1455  // return pure undefined names as def
1456 
1457  switch(tt /*data->Typ()*/)
1458  {
1459  case 0: /*error*/
1460  case NONE/* nothing*/:fputs("16 ",d->f_write);
1461  break;
1462  case STRING_CMD: fputs("2 ",d->f_write);
1463  ssiWriteString(d,(char *)dd);
1464  break;
1465  case INT_CMD: fputs("1 ",d->f_write);
1466  ssiWriteInt(d,(int)(long)dd);
1467  break;
1468  case BIGINT_CMD:fputs("4 ",d->f_write);
1469  ssiWriteBigInt(d,(number)dd);
1470  break;
1471  case NUMBER_CMD:
1472  if (d->r!=currRing)
1473  {
1474  fputs("15 ",d->f_write);
1476  if (d->level<=1) fputc('\n',d->f_write);
1477  }
1478  fputs("3 ",d->f_write);
1479  ssiWriteNumber(d,(number)dd);
1480  break;
1481  case RING_CMD:fputs("5 ",d->f_write);
1482  ssiWriteRing(d,(ring)dd);
1483  break;
1484  case BUCKET_CMD:
1485  {
1486  sBucket_pt b=(sBucket_pt)dd;
1487  if (d->r!=sBucketGetRing(b))
1488  {
1489  fputs("15 ",d->f_write);
1491  if (d->level<=1) fputc('\n',d->f_write);
1492  }
1493  fputs("6 ",d->f_write);
1494  ssiWritePoly(d,tt,sBucketPeek(b));
1495  break;
1496  }
1497  case POLY_CMD:
1498  case VECTOR_CMD:
1499  if (d->r!=currRing)
1500  {
1501  fputs("15 ",d->f_write);
1503  if (d->level<=1) fputc('\n',d->f_write);
1504  }
1505  if(tt==POLY_CMD) fputs("6 ",d->f_write);
1506  else fputs("9 ",d->f_write);
1507  ssiWritePoly(d,tt,(poly)dd);
1508  break;
1509  case IDEAL_CMD:
1510  case MODUL_CMD:
1511  case MATRIX_CMD:
1512  case SMATRIX_CMD:
1513  if (d->r!=currRing)
1514  {
1515  fputs("15 ",d->f_write);
1517  if (d->level<=1) fputc('\n',d->f_write);
1518  }
1519  if(tt==IDEAL_CMD) fputs("7 ",d->f_write);
1520  else if(tt==MATRIX_CMD) fputs("8 ",d->f_write);
1521  else if(tt==SMATRIX_CMD) fputs("22 ",d->f_write);
1522  else
1523  {
1524  ideal M=(ideal)dd;
1525  fprintf(d->f_write,"10 %d ",(int)M->rank);
1526  }
1527  ssiWriteIdeal(d,tt,(ideal)dd);
1528  break;
1529  case COMMAND:
1530  fputs("11 ",d->f_write);
1531  ssiWriteCommand(l,(command)dd);
1532  break;
1533  case DEF_CMD: /* not evaluated stuff in quotes */
1534  fputs("12 ",d->f_write);
1535  ssiWriteString(d,data->Name());
1536  break;
1537  case PROC_CMD:
1538  fputs("13 ",d->f_write);
1539  ssiWriteProc(d,(procinfov)dd);
1540  break;
1541  case LIST_CMD:
1542  fputs("14 ",d->f_write);
1543  ssiWriteList(l,(lists)dd);
1544  break;
1545  case INTVEC_CMD:
1546  fputs("17 ",d->f_write);
1547  ssiWriteIntvec(d,(intvec *)dd);
1548  break;
1549  case INTMAT_CMD:
1550  fputs("18 ",d->f_write);
1551  ssiWriteIntmat(d,(intvec *)dd);
1552  break;
1553  case BIGINTMAT_CMD:
1554  fputs("19 ",d->f_write);
1555  ssiWriteBigintmat(d,(bigintmat *)dd);
1556  break;
1557  default:
1558  if (tt>MAX_TOK)
1559  {
1560  blackbox *b=getBlackboxStuff(tt);
1561  fputs("20 ",d->f_write);
1562  b->blackbox_serialize(b,dd,l);
1563  }
1564  else
1565  {
1566  Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp);
1567  d->level=0;
1568  return TRUE;
1569  }
1570  break;
1571  }
1572  if (d->level<=1) { fputc('\n',d->f_write); fflush(d->f_write); }
1573  data=data->next;
1574  }
1575  d->level--;
1576  return FALSE;
1577 }
Definition: s_buff.h:20
ip_command * command
Definition: ipid.h:22
Definition: tok.h:96
Definition: attrib.h:17
Definition: lists.h:23
#define FALSE
Definition: auxiliary.h:94
Definition: tok.h:38
Matrices of numbers.
Definition: bigintmat.h:50
Definition: tok.h:216
char level
Definition: s_buff.h:27
#define TRUE
Definition: auxiliary.h:98
ring r
Definition: s_buff.h:24
#define M
Definition: sirandom.c:24
CanonicalForm b
Definition: cfModGcd.cc:4044
Definition: intvec.h:19
Definition: tok.h:58
sBucket * sBucket_pt
Definition: sbuckets.h:16
while(1)
Definition: libparse.cc:1442
ring sBucketGetRing(const sBucket_pt bucket)
Returns bucket ring.
Definition: sbuckets.cc:46
#define NULL
Definition: omList.c:12
FILE * f_write
Definition: s_buff.h:23
attr next
Definition: attrib.h:26
ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition: polys.cc:12
poly sBucketPeek(sBucket_pt b)
Definition: sbuckets.cc:455
Definition: tok.h:118
int BOOLEAN
Definition: auxiliary.h:85
#define NONE
Definition: tok.h:219
void Werror(const char *fmt,...)
Definition: reporter.cc:189
int l
Definition: cfEzgcd.cc:93
#define COMMAND
Definition: tok.h:29
blackbox * getBlackboxStuff(const int t)
return the structure to the type given by t
Definition: blackbox.cc:16