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)
 
void sig_chld_hdl (int sig)
 additional default signal handler More...
 

Function Documentation

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 1908 of file ssiLink.cc.

1909 {
1910  pid_t kidpid;
1911  int status;
1912 
1913  loop
1914  {
1915  kidpid = si_waitpid(-1, &status, WNOHANG);
1916  if (kidpid==-1)
1917  {
1918  /* continue on interruption (EINTR): */
1919  if (errno == EINTR) continue;
1920  /* break on anything else (EINVAL or ECHILD according to manpage): */
1921  break;
1922  }
1923  else if (kidpid==0) break; /* no more children to process, so break */
1924 
1925  //printf("Child %ld terminated\n", kidpid);
1927  while((hh!=NULL)&&(ssiToBeClosed_inactive))
1928  {
1929  if((hh->l!=NULL) && (hh->l->m->Open==ssiOpen))
1930  {
1931  ssiInfo *d = (ssiInfo *)hh->l->data;
1932  if(d->pid==kidpid)
1933  {
1935  {
1937  slClose(hh->l);
1939  break;
1940  }
1941  else break;
1942  }
1943  else hh=(link_list)hh->next;
1944  }
1945  else hh=(link_list)hh->next;
1946  }
1947  }
1948 }
loop
Definition: myNF.cc:98
#define FALSE
Definition: auxiliary.h:140
#define TRUE
Definition: auxiliary.h:144
#define NULL
Definition: omList.c:10
int * status
Definition: si_signals.h:51
si_link_extension slInitSsiExtension ( si_link_extension  s)

Definition at line 1522 of file ssiLink.cc.

1523 {
1524  s->Open=ssiOpen;
1525  s->Close=ssiClose;
1526  s->Kill=ssiClose;
1527  s->Read=ssiRead1;
1528  s->Read2=(slRead2Proc)NULL;
1529  s->Write=ssiWrite;
1530  s->Dump=ssiDump;
1531  s->GetDump=ssiGetDump;
1532 
1533  s->Status=slStatusSsi;
1534  s->SetRing=ssiSetRing;
1535  s->type="ssi";
1536  return s;
1537 }
const CanonicalForm int s
Definition: facAbsFact.cc:55
#define NULL
Definition: omList.c:10
const char* slStatusSsi ( si_link  l,
const char *  request 
)

Definition at line 1539 of file ssiLink.cc.

1540 {
1541  ssiInfo *d=(ssiInfo*)l->data;
1542  if (d==NULL) return "not open";
1543  if (((strcmp(l->mode,"fork")==0)
1544  ||(strcmp(l->mode,"tcp")==0)
1545  ||(strcmp(l->mode,"connect")==0))
1546  && (strcmp(request, "read") == 0))
1547  {
1548  fd_set mask;
1549  struct timeval wt;
1550  if (s_isready(d->f_read)) return "ready";
1551  loop
1552  {
1553  /* Don't block. Return socket status immediately. */
1554  wt.tv_sec = 0;
1555  wt.tv_usec = 0;
1556 
1557  FD_ZERO(&mask);
1558  FD_SET(d->fd_read, &mask);
1559  //Print("test fd %d\n",d->fd_read);
1560  /* check with select: chars waiting: no -> not ready */
1561  switch (si_select(d->fd_read+1, &mask, NULL, NULL, &wt))
1562  {
1563  case 0: /* not ready */ return "not ready";
1564  case -1: /*error*/ return "error";
1565  case 1: /*ready ? */ break;
1566  }
1567  /* yes: read 1 char*/
1568  /* if \n, check again with select else ungetc(c), ready*/
1569  int c=s_getc(d->f_read);
1570  //Print("try c=%d\n",c);
1571  if (c== -1) return "eof"; /* eof or error */
1572  else if (isdigit(c))
1573  { s_ungetc(c,d->f_read); return "ready"; }
1574  else if (c>' ')
1575  {
1576  Werror("unknown char in ssiLink(%d)",c);
1577  return "error";
1578  }
1579  /* else: next char */
1580  }
1581  }
1582  else if (strcmp(request, "read") == 0)
1583  {
1584  if (SI_LINK_R_OPEN_P(l) && (!s_iseof(d->f_read)) && (s_isready(d->f_read))) return "ready";
1585  else return "not ready";
1586  }
1587  else if (strcmp(request, "write") == 0)
1588  {
1589  if (SI_LINK_W_OPEN_P(l)) return "ready";
1590  else return "not ready";
1591  }
1592  else return "unknown status request";
1593 }
loop
Definition: myNF.cc:98
if(0 > strat->sl)
Definition: myNF.cc:73
int s_getc(s_buff F)
Definition: s_buff.cc:66
void s_ungetc(int c, s_buff F)
Definition: s_buff.cc:107
int s_iseof(s_buff F)
Definition: s_buff.cc:260
#define NULL
Definition: omList.c:10
int s_isready(s_buff F)
Definition: s_buff.cc:93
void Werror(const char *fmt,...)
Definition: reporter.cc:199
int l
Definition: cfEzgcd.cc:94
BOOLEAN ssiClose ( si_link  l)

Definition at line 1129 of file ssiLink.cc.

1130 {
1131  if (l!=NULL)
1132  {
1134  ssiInfo *d = (ssiInfo *)l->data;
1135  if (d!=NULL)
1136  {
1137  if ((d->send_quit_at_exit)
1138  && (d->quit_sent==0))
1139  {
1140  fputs("99\n",d->f_write);
1141  fflush(d->f_write);
1142  if (d->f_read!=NULL) { s_close(d->f_read);s_free(d->f_read);}
1143  if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1144  }
1145  if (d->r!=NULL) rKill(d->r);
1146  si_waitpid(d->pid,NULL,WNOHANG);
1147  if ((d->pid!=0)
1148  && (kill(d->pid,0)==0)) // child is still running
1149  {
1150  struct timespec t;
1151  t.tv_sec=0;
1152  t.tv_nsec=100000000; // <=100 ms
1153  struct timespec rem;
1154  int r;
1155  loop
1156  {
1157  r = nanosleep(&t, &rem);
1158  t = rem;
1159  // child finished:
1160  if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1161  // other signal, waited s>= 100 ms:
1162  if ((r==0) || (errno != EINTR)) break;
1163  }
1164  if (kill(d->pid,0) == 0)
1165  {
1166  kill(d->pid,15);
1167  t.tv_sec=5; // <=5s
1168  t.tv_nsec=0;
1169  loop
1170  {
1171  r = nanosleep(&t, &rem);
1172  t = rem;
1173  // child finished:
1174  if (si_waitpid(d->pid,NULL,WNOHANG) != 0) break;
1175  // other signal, waited s>= 100 ms:
1176  if ((r==0) || (errno != EINTR)) break;
1177  }
1178  if (kill(d->pid,0) == 0)
1179  {
1180  kill(d->pid,9); // just to be sure
1181  si_waitpid(d->pid,NULL,0);
1182  }
1183  }
1184  }
1185  if (d->f_read!=NULL) { s_close(d->f_read);s_free(d->f_read);}
1186  if (d->f_write!=NULL) { fclose(d->f_write); d->f_write=NULL; }
1187  if ((strcmp(l->mode,"tcp")==0)
1188  || (strcmp(l->mode,"fork")==0))
1189  {
1191  if (hh!=NULL)
1192  {
1193  if (hh->l==l)
1194  {
1196  omFreeSize(hh,sizeof(link_struct));
1197  }
1198  else while(hh->next!=NULL)
1199  {
1200  link_list hhh=(link_list)hh->next;
1201  if (hhh->l==l)
1202  {
1203  hh->next=hhh->next;
1204  omFreeSize(hhh,sizeof(link_struct));
1205  break;
1206  }
1207  else
1208  hh=(link_list)hh->next;
1209  }
1210  }
1211  }
1212  omFreeSize((ADDRESS)d,(sizeof *d));
1213  }
1214  l->data=NULL;
1215  }
1216  return FALSE;
1217 }
void rem(unsigned long *a, unsigned long *q, unsigned long p, int &dega, int degq)
Definition: minpoly.cc:574
loop
Definition: myNF.cc:98
if(0 > strat->sl)
Definition: myNF.cc:73
#define FALSE
Definition: auxiliary.h:140
int s_free(s_buff &F)
Definition: s_buff.cc:45
#define omFreeSize(addr, size)
Definition: omAllocDecl.h:260
void * ADDRESS
Definition: auxiliary.h:161
int s_close(s_buff &F)
Definition: s_buff.cc:56
const ring r
Definition: syzextra.cc:208
void rKill(ring r)
Definition: ipshell.cc:5999
#define NULL
Definition: omList.c:10
int l
Definition: cfEzgcd.cc:94
BOOLEAN ssiOpen ( si_link  l,
short  flag,
leftv  u 
)

Definition at line 748 of file ssiLink.cc.

749 {
750  if (l!=NULL)
751  {
752  const char *mode;
753  ssiInfo *d=(ssiInfo*)omAlloc0(sizeof(ssiInfo));
754  if (flag & SI_LINK_OPEN)
755  {
756  if (l->mode[0] != '\0' && (strcmp(l->mode, "r") == 0))
757  flag = SI_LINK_READ;
758  else flag = SI_LINK_WRITE;
759  }
760 
761  if (flag == SI_LINK_READ) mode = "r";
762  else if (strcmp(l->mode, "w") == 0) mode = "w";
763  else if (strcmp(l->mode, "fork") == 0) mode = "fork";
764  else if (strcmp(l->mode, "tcp") == 0) mode = "tcp";
765  else if (strcmp(l->mode, "connect") == 0) mode = "connect";
766  else mode = "a";
767 
768 
769  SI_LINK_SET_OPEN_P(l, flag);
770  l->data=d;
771  omFree(l->mode);
772  l->mode = omStrDup(mode);
773 
774  if (l->name[0] == '\0')
775  {
776  if (strcmp(mode,"fork")==0)
777  {
779  n->u=u;
780  n->l=l;
781  n->next=(void *)ssiToBeClosed;
782  ssiToBeClosed=n;
783 
784  int pc[2];
785  int cp[2];
786  pipe(pc);
787  pipe(cp);
788  pid_t pid = fork();
789  if (pid == -1 && errno == EAGAIN) // RLIMIT_NPROC too low?
790  {
792  pid = fork();
793  }
794  if (pid == -1)
795  {
796  WerrorS("could not fork");
797  }
798  if (pid==0) /*fork: child*/
799  {
800  /* block SIGINT */
801  sigset_t sigint;
802  sigemptyset(&sigint);
803  sigaddset(&sigint, SIGINT);
804  sigprocmask(SIG_BLOCK, &sigint, NULL);
805 
807  /* we know: l is the first entry in ssiToBeClosed-list */
808  while(hh!=NULL)
809  {
810  SI_LINK_SET_CLOSE_P(hh->l);
811  ssiInfo *dd=(ssiInfo*)hh->l->data;
812  s_close(dd->f_read);
813  s_free(dd->f_read);
814  fclose(dd->f_write);
815  if (dd->r!=NULL) rKill(dd->r);
816  omFreeSize((ADDRESS)dd,(sizeof *dd));
817  hh->l->data=NULL;
818  link_list nn=(link_list)hh->next;
819  omFree(hh);
820  hh=nn;
821  }
823 #ifdef HAVE_SIMPLEIPC
824  memset(sem_acquired, 0, SIPC_MAX_SEMAPHORES*sizeof(sem_acquired[0]));
825 #endif // HAVE_SIMPLEIPC
826  si_close(pc[1]); si_close(cp[0]);
827  d->f_write=fdopen(cp[1],"w");
828  d->f_read=s_open(pc[0]);
829  d->fd_read=pc[0];
830  d->fd_write=cp[1];
831  //d->r=currRing;
832  //if (d->r!=NULL) d->r->ref++;
833  l->data=d;
834  omFree(l->mode);
835  l->mode = omStrDup(mode);
838  //myynest=0;
840  if ((u!=NULL)&&(u->rtyp==IDHDL))
841  {
842  idhdl h=(idhdl)u->data;
843  h->lev=0;
844  }
845  loop
846  {
847  leftv h=ssiRead1(l); /*contains an exit.... */
848  if (feErrors != NULL && *feErrors != '\0')
849  {
850  // handle errors:
851  PrintS(feErrors); /* currently quite simple */
852  *feErrors = '\0';
853  }
854  ssiWrite(l,h);
855  h->CleanUp();
856  omFreeBin(h, sleftv_bin);
857  }
858  /* never reached*/
859  }
860  else if (pid>0) /*fork: parent*/
861  {
862  d->pid=pid;
863  si_close(pc[0]); si_close(cp[1]);
864  d->f_write=fdopen(pc[1],"w");
865  d->f_read=s_open(cp[0]);
866  d->fd_read=cp[0];
867  d->fd_write=pc[1];
869  d->send_quit_at_exit=1;
870  //d->r=currRing;
871  //if (d->r!=NULL) d->r->ref++;
872  }
873  else
874  {
875  Werror("fork failed (%d)",errno);
876  l->data=NULL;
877  omFree(d);
878  return TRUE;
879  }
880  }
881  // ---------------------------------------------------------------------
882  else if (strcmp(mode,"tcp")==0)
883  {
884  int sockfd, newsockfd, portno, clilen;
885  struct sockaddr_in serv_addr, cli_addr;
886  sockfd = socket(AF_INET, SOCK_STREAM, 0);
887  if(sockfd < 0)
888  {
889  WerrorS("ERROR opening socket");
890  l->data=NULL;
891  omFree(d);
892  return TRUE;
893  }
894  memset((char *) &serv_addr,0, sizeof(serv_addr));
895  portno = 1025;
896  serv_addr.sin_family = AF_INET;
897  serv_addr.sin_addr.s_addr = INADDR_ANY;
898  do
899  {
900  portno++;
901  serv_addr.sin_port = htons(portno);
902  if(portno > 50000)
903  {
904  WerrorS("ERROR on binding (no free port available?)");
905  l->data=NULL;
906  omFree(d);
907  return TRUE;
908  }
909  }
910  while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
911  Print("waiting on port %d\n", portno);mflush();
912  listen(sockfd,1);
913  newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
914  if(newsockfd < 0)
915  {
916  WerrorS("ERROR on accept");
917  l->data=NULL;
918  omFree(d);
919  return TRUE;
920  }
921  PrintS("client accepted\n");
922  d->fd_read = newsockfd;
923  d->fd_write = newsockfd;
924  d->f_read = s_open(newsockfd);
925  d->f_write = fdopen(newsockfd, "w");
927  si_close(sockfd);
928  }
929  // no ssi-Link on stdin or stdout
930  else
931  {
932  Werror("invalid mode >>%s<< for ssi",mode);
933  l->data=NULL;
934  omFree(d);
935  return TRUE;
936  }
937  }
938  // =========================================================================
939  else /*l->name=NULL*/
940  {
941  // tcp mode
942  if(strcmp(mode,"tcp")==0)
943  {
944  int sockfd, newsockfd, portno, clilen;
945  struct sockaddr_in serv_addr, cli_addr;
946  sockfd = socket(AF_INET, SOCK_STREAM, 0);
947  if(sockfd < 0)
948  {
949  WerrorS("ERROR opening socket");
950  l->data=NULL;
951  omFree(d);
952  return TRUE;
953  }
954  memset((char *) &serv_addr,0, sizeof(serv_addr));
955  portno = 1025;
956  serv_addr.sin_family = AF_INET;
957  serv_addr.sin_addr.s_addr = INADDR_ANY;
958  do
959  {
960  portno++;
961  serv_addr.sin_port = htons(portno);
962  if(portno > 50000)
963  {
964  WerrorS("ERROR on binding (no free port available?)");
965  l->data=NULL;
966  return TRUE;
967  }
968  }
969  while(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0);
970  //Print("waiting on port %d\n", portno);mflush();
971  listen(sockfd,1);
972  char* cli_host = (char*)omAlloc(256);
973  char* path = (char*)omAlloc(1024);
974  int r = si_sscanf(l->name,"%255[^:]:%s",cli_host,path);
975  if(r == 0)
976  {
977  WerrorS("ERROR: no host specified");
978  l->data=NULL;
979  omFree(d);
980  omFree(path);
981  omFree(cli_host);
982  return TRUE;
983  }
984  else if(r == 1)
985  {
986  WarnS("program not specified, using /usr/local/bin/Singular");
987  strcpy(path,"/usr/local/bin/Singular");
988  }
989  char* ssh_command = (char*)omAlloc(256);
990  char* ser_host = (char*)omAlloc(64);
991  gethostname(ser_host,64);
992  sprintf(ssh_command,"ssh %s %s -q --batch --link=ssi --MPhost=%s --MPport=%d &",cli_host,path,ser_host,portno);
993  //Print("client on %s started:%s\n",cli_host,path);
994  omFree(path);
995  omFree(cli_host);
996  if (TEST_OPT_PROT) { Print("running >>%s<<\n",ssh_command); }
997  system(ssh_command);
998  omFree(ssh_command);
999  omFree(ser_host);
1000  clilen = sizeof(cli_addr);
1001  newsockfd = si_accept(sockfd, (struct sockaddr *) &cli_addr, (socklen_t *)&clilen);
1002  if(newsockfd < 0)
1003  {
1004  WerrorS("ERROR on accept");
1005  l->data=NULL;
1006  omFree(d);
1007  return TRUE;
1008  }
1009  //PrintS("client accepted\n");
1010  d->fd_read = newsockfd;
1011  d->fd_write = newsockfd;
1012  d->f_read = s_open(newsockfd);
1013  d->f_write = fdopen(newsockfd, "w");
1014  si_close(sockfd);
1016  d->send_quit_at_exit=1;
1017  link_list newlink=(link_list)omAlloc(sizeof(link_struct));
1018  newlink->u=u;
1019  newlink->l=l;
1020  newlink->next=(void *)ssiToBeClosed;
1021  ssiToBeClosed=newlink;
1022  fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1023  }
1024  // ----------------------------------------------------------------------
1025  else if(strcmp(mode,"connect")==0)
1026  {
1027  char* host = (char*)omAlloc(256);
1028  int sockfd, portno;
1029  struct sockaddr_in serv_addr;
1030  struct hostent *server;
1031 
1032  si_sscanf(l->name,"%255[^:]:%d",host,&portno);
1033  //Print("connect to host %s, port %d\n",host,portno);mflush();
1034  if (portno!=0)
1035  {
1036  sockfd = socket(AF_INET, SOCK_STREAM, 0);
1037  if (sockfd < 0) { WerrorS("ERROR opening socket"); return TRUE; }
1038  server = gethostbyname(host);
1039  if (server == NULL) { WerrorS("ERROR, no such host"); return TRUE; }
1040  memset((char *) &serv_addr, 0, sizeof(serv_addr));
1041  serv_addr.sin_family = AF_INET;
1042  memcpy((char *)&serv_addr.sin_addr.s_addr,
1043  (char *)server->h_addr,
1044  server->h_length);
1045  serv_addr.sin_port = htons(portno);
1046  if (si_connect(sockfd,(sockaddr*)&serv_addr,sizeof(serv_addr)) < 0)
1047  { Werror("ERROR connecting(errno=%d)",errno); return TRUE; }
1048  //PrintS("connected\n");mflush();
1049  d->f_read=s_open(sockfd);
1050  d->fd_read=sockfd;
1051  d->f_write=fdopen(sockfd,"w");
1052  d->fd_write=sockfd;
1054  omFree(host);
1055  }
1056  else
1057  {
1058  l->data=NULL;
1059  omFree(d);
1060  return TRUE;
1061  }
1062  }
1063  // ======================================================================
1064  else
1065  {
1066  // normal link to a file
1067  FILE *outfile;
1068  char *filename=l->name;
1069 
1070  if(filename[0]=='>')
1071  {
1072  if (filename[1]=='>')
1073  {
1074  filename+=2;
1075  mode = "a";
1076  }
1077  else
1078  {
1079  filename++;
1080  mode="w";
1081  }
1082  }
1083  outfile=myfopen(filename,mode);
1084  if (outfile!=NULL)
1085  {
1086  if (strcmp(l->mode,"r")==0)
1087  {
1088  fclose(outfile);
1089  d->f_read=s_open_by_name(filename);
1090  }
1091  else
1092  {
1093  d->f_write = outfile;
1094  fprintf(d->f_write,"98 %d %d %u %u\n",SSI_VERSION,MAX_TOK,si_opt_1,si_opt_2);
1095  }
1096  }
1097  else
1098  {
1099  omFree(d);
1100  l->data=NULL;
1101  return TRUE;
1102  }
1103  }
1104  }
1105  }
1106 
1107  return FALSE;
1108 }
unsigned si_opt_1
Definition: options.c:5
char *(* fe_fgets_stdin)(const char *pr, char *s, int size)
Definition: feread.cc:33
Class used for (list of) interpreter objects.
Definition: subexpr.h:83
#define Print
Definition: emacs.cc:83
#define TEST_OPT_PROT
Definition: options.h:98
loop
Definition: myNF.cc:98
#define FALSE
Definition: auxiliary.h:140
int s_free(s_buff &F)
Definition: s_buff.cc:45
Definition: tok.h:170
#define omFreeSize(addr, size)
Definition: omAllocDecl.h:260
char * fe_fgets_dummy(const char *, char *, int)
Definition: feread.cc:418
#define TRUE
Definition: auxiliary.h:144
void * ADDRESS
Definition: auxiliary.h:161
void WerrorS(const char *s)
Definition: feFopen.cc:24
int s_close(s_buff &F)
Definition: s_buff.cc:56
#define WarnS
Definition: emacs.cc:81
#define omAlloc(size)
Definition: omAllocDecl.h:210
Definition: idrec.h:34
#define IDHDL
Definition: tok.h:35
void * data
Definition: subexpr.h:89
#define mflush()
Definition: reporter.h:55
char * feErrors
Definition: reporter.cc:47
const ring r
Definition: syzextra.cc:208
BOOLEAN singular_in_batchmode
Definition: cntrlc.cc:72
void rKill(ring r)
Definition: ipshell.cc:5999
#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:18
omBin sleftv_bin
Definition: subexpr.cc:50
void PrintS(const char *s)
Definition: reporter.cc:294
#define NULL
Definition: omList.c:10
short lev
Definition: idrec.h:45
int rtyp
Definition: subexpr.h:92
#define SIPC_MAX_SEMAPHORES
Definition: simpleipc.h:10
void CleanUp(ring r=currRing)
Definition: subexpr.cc:321
#define omFreeBin(addr, bin)
Definition: omAllocDecl.h:259
int sem_acquired[SIPC_MAX_SEMAPHORES]
Definition: semaphore.c:30
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:978
void Werror(const char *fmt,...)
Definition: reporter.cc:199
#define omAlloc0(size)
Definition: omAllocDecl.h:211
int l
Definition: cfEzgcd.cc:94
s_buff s_open(int fd)
Definition: s_buff.cc:31
#define omStrDup(s)
Definition: omAllocDecl.h:263
leftv ssiRead1 ( si_link  l)

Definition at line 1220 of file ssiLink.cc.

1221 {
1222  ssiInfo *d = (ssiInfo *)l->data;
1223  leftv res=(leftv)omAlloc0(sizeof(sleftv));
1224  int t=0;
1225  t=s_readint(d->f_read);
1226  //Print("got type %d\n",t);
1227  switch(t)
1228  {
1229  case 1:res->rtyp=INT_CMD;
1230  res->data=(char *)(long)ssiReadInt(d->f_read);
1231  break;
1232  case 2:res->rtyp=STRING_CMD;
1233  res->data=(char *)ssiReadString(d);
1234  break;
1235  case 3:res->rtyp=NUMBER_CMD;
1236  res->data=(char *)ssiReadNumber(d);
1237  break;
1238  case 4:res->rtyp=BIGINT_CMD;
1239  res->data=(char *)ssiReadBigInt(d);
1240  break;
1241  case 15:
1242  case 5:{
1243  d->r=ssiReadRing(d);
1244  res->data=(char*)d->r;
1245  if (d->r->qideal==NULL)
1246  res->rtyp=RING_CMD;
1247  else
1248  res->rtyp=QRING_CMD;
1249  // we are in the top-level, so set the basering to d->r:
1250  if (d->r!=NULL)
1251  {
1252  d->r->ref++;
1253  ssiSetCurrRing(d->r);
1254  }
1255  if (t==15) return ssiRead1(l);
1256  }
1257  break;
1258  case 6:res->rtyp=POLY_CMD;
1259  if (d->r==NULL) goto no_ring;
1260  res->data=(char*)ssiReadPoly(d);
1261  break;
1262  case 7:res->rtyp=IDEAL_CMD;
1263  if (d->r==NULL) goto no_ring;
1264  res->data=(char*)ssiReadIdeal(d);
1265  break;
1266  case 8:res->rtyp=MATRIX_CMD;
1267  if (d->r==NULL) goto no_ring;
1268  res->data=(char*)ssiReadMatrix(d);
1269  break;
1270  case 9:res->rtyp=VECTOR_CMD;
1271  if (d->r==NULL) goto no_ring;
1272  res->data=(char*)ssiReadPoly(d);
1273  break;
1274  case 10:res->rtyp=MODUL_CMD;
1275  if (d->r==NULL) goto no_ring;
1276  {
1277  int rk=s_readint(d->f_read);
1278  ideal M=ssiReadIdeal(d);
1279  M->rank=rk;
1280  res->data=(char*)M;
1281  }
1282  break;
1283  case 11:
1284  {
1285  res->rtyp=COMMAND;
1286  res->data=ssiReadCommand(l);
1287  int nok=res->Eval();
1288  if (nok) WerrorS("error in eval");
1289  break;
1290  }
1291  case 12: /*DEF_CMD*/
1292  {
1293  res->rtyp=0;
1294  res->name=(char *)ssiReadString(d);
1295  int nok=res->Eval();
1296  if (nok) WerrorS("error in name lookup");
1297  break;
1298  }
1299  case 13: res->rtyp=PROC_CMD;
1300  res->data=ssiReadProc(d);
1301  break;
1302  case 14: res->rtyp=LIST_CMD;
1303  res->data=ssiReadList(l);
1304  break;
1305  case 16: res->rtyp=NONE; res->data=NULL;
1306  break;
1307  case 17: res->rtyp=INTVEC_CMD;
1308  res->data=ssiReadIntvec(d);
1309  break;
1310  case 18: res->rtyp=INTMAT_CMD;
1311  res->data=ssiReadIntmat(d);
1312  break;
1313  case 19: res->rtyp=BIGINTMAT_CMD;
1314  res->data=ssiReadBigintmat(d);
1315  break;
1316  case 20: ssiReadBlackbox(res,l);
1317  break;
1318  case 21: ssiReadAttrib(res,l);
1319  break;
1320  // ------------
1321  case 98: // version
1322  {
1323  int n98_v,n98_m;
1324  BITSET n98_o1,n98_o2;
1325  n98_v=s_readint(d->f_read);
1326  n98_m=s_readint(d->f_read);
1327  n98_o1=s_readint(d->f_read);
1328  n98_o2=s_readint(d->f_read);
1329  if ((n98_v!=SSI_VERSION) ||(n98_m!=MAX_TOK))
1330  {
1331  Print("incompatible versions of ssi: %d/%d vs %d/%d",
1332  SSI_VERSION,MAX_TOK,n98_v,n98_m);
1333  }
1334  #ifndef SING_NDEBUG
1335  if (TEST_OPT_DEBUG)
1336  Print("// opening ssi-%d, MAX_TOK=%d\n",n98_v,n98_m);
1337  #endif
1338  si_opt_1=n98_o1;
1339  si_opt_2=n98_o2;
1340  return ssiRead1(l);
1341  }
1342  case 99: ssiClose(l); m2_end(0);
1343  case 0: if (s_iseof(d->f_read))
1344  {
1345  ssiClose(l);
1346  }
1347  res->rtyp=DEF_CMD;
1348  break;
1349  default: Werror("not implemented (t:%d)",t);
1350  omFreeSize(res,sizeof(sleftv));
1351  res=NULL;
1352  break;
1353  }
1354  // if currRing is required for the result, but lost
1355  // define "ssiRing%d" as currRing:
1356  if ((d->r!=NULL)
1357  && (currRing!=d->r)
1358  && (res->RingDependend()))
1359  {
1360  ssiSetCurrRing(d->r);
1361  }
1362  return res;
1363 no_ring: WerrorS("no ring");
1364  omFreeSize(res,sizeof(sleftv));
1365  return NULL;
1366 }
unsigned si_opt_1
Definition: options.c:5
Class used for (list of) interpreter objects.
Definition: subexpr.h:83
#define Print
Definition: emacs.cc:83
Definition: tok.h:85
if(0 > strat->sl)
Definition: myNF.cc:73
Definition: tok.h:42
Definition: tok.h:170
#define omFreeSize(addr, size)
Definition: omAllocDecl.h:260
void m2_end(int i)
Definition: misc_ip.cc:1075
void WerrorS(const char *s)
Definition: feFopen.cc:24
#define TEST_OPT_DEBUG
Definition: options.h:103
#define BITSET
Definition: structs.h:17
poly res
Definition: myNF.cc:322
#define M
Definition: sirandom.c:24
ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition: polys.cc:12
int s_readint(s_buff F)
Definition: s_buff.cc:120
Definition: tok.h:58
int s_iseof(s_buff F)
Definition: s_buff.cc:260
Definition: tok.h:88
#define NULL
Definition: omList.c:10
Definition: tok.h:96
Definition: tok.h:126
unsigned si_opt_2
Definition: options.c:6
#define NONE
Definition: tok.h:173
void Werror(const char *fmt,...)
Definition: reporter.cc:199
#define omAlloc0(size)
Definition: omAllocDecl.h:211
int l
Definition: cfEzgcd.cc:94
#define COMMAND
Definition: tok.h:33
leftv ssiRead2 ( si_link  l,
leftv  key 
)
BOOLEAN ssiWrite ( si_link  l,
leftv  v 
)

Definition at line 1387 of file ssiLink.cc.

1388 {
1389  if(SI_LINK_W_OPEN_P(l)==0)
1390  if (slOpen(l,SI_LINK_OPEN|SI_LINK_WRITE,NULL)) return TRUE;
1391  ssiInfo *d = (ssiInfo *)l->data;
1392  d->level++;
1393  //FILE *fich=d->f;
1394  while (data!=NULL)
1395  {
1396  int tt=data->Typ();
1397  void *dd=data->Data();
1398  attr *aa=data->Attribute();
1399  BOOLEAN with_attr=FALSE;
1400  if (((*aa)!=NULL)||(data->flag!=0))
1401  {
1402  attr a=*aa;
1403  int n=0;
1404  while(a!=NULL) { n++; a=a->next;}
1405  fprintf(d->f_write,"21 %d %d ",data->flag,n);
1406  a=*aa;
1407  }
1408  if ((dd==NULL) && (data->name!=NULL) && (tt==0)) tt=DEF_CMD;
1409  // return pure undefined names as def
1410 
1411  switch(tt /*data->Typ()*/)
1412  {
1413  case 0: /*error*/
1414  case NONE/* nothing*/:fputs("16 ",d->f_write);
1415  break;
1416  case STRING_CMD: fputs("2 ",d->f_write);
1417  ssiWriteString(d,(char *)dd);
1418  break;
1419  case INT_CMD: fputs("1 ",d->f_write);
1420  ssiWriteInt(d,(int)(long)dd);
1421  break;
1422  case BIGINT_CMD:fputs("4 ",d->f_write);
1423  ssiWriteBigInt(d,(number)dd);
1424  break;
1425  case NUMBER_CMD:
1426  if (d->r!=currRing)
1427  {
1428  fputs("15 ",d->f_write);
1430  if (d->level<=1) fputc('\n',d->f_write);
1431  }
1432  fputs("3 ",d->f_write);
1433  ssiWriteNumber(d,(number)dd);
1434  break;
1435  case QRING_CMD:
1436  case RING_CMD:fputs("5 ",d->f_write);
1437  ssiWriteRing(d,(ring)dd);
1438  break;
1439  case POLY_CMD:
1440  case VECTOR_CMD:
1441  if (d->r!=currRing)
1442  {
1443  fputs("15 ",d->f_write);
1445  if (d->level<=1) fputc('\n',d->f_write);
1446  }
1447  if(tt==POLY_CMD) fputs("6 ",d->f_write);
1448  else fputs("9 ",d->f_write);
1449  ssiWritePoly(d,tt,(poly)dd);
1450  break;
1451  case IDEAL_CMD:
1452  case MODUL_CMD:
1453  case MATRIX_CMD:
1454  if (d->r!=currRing)
1455  {
1456  fputs("15 ",d->f_write);
1458  if (d->level<=1) fputc('\n',d->f_write);
1459  }
1460  if(tt==IDEAL_CMD) fputs("7 ",d->f_write);
1461  else if(tt==MATRIX_CMD) fputs("8 ",d->f_write);
1462  else
1463  {
1464  ideal M=(ideal)dd;
1465  fprintf(d->f_write,"10 %d ",M->rank);
1466  }
1467  ssiWriteIdeal(d,tt,(ideal)dd);
1468  break;
1469  case COMMAND:
1470  fputs("11 ",d->f_write);
1471  ssiWriteCommand(l,(command)dd);
1472  break;
1473  case DEF_CMD: /* not evaluated stuff in quotes */
1474  fputs("12 ",d->f_write);
1475  ssiWriteString(d,data->Name());
1476  break;
1477  case PROC_CMD:
1478  fputs("13 ",d->f_write);
1479  ssiWriteProc(d,(procinfov)dd);
1480  break;
1481  case LIST_CMD:
1482  fputs("14 ",d->f_write);
1483  ssiWriteList(l,(lists)dd);
1484  break;
1485  case INTVEC_CMD:
1486  fputs("17 ",d->f_write);
1487  ssiWriteIntvec(d,(intvec *)dd);
1488  break;
1489  case INTMAT_CMD:
1490  fputs("18 ",d->f_write);
1491  ssiWriteIntmat(d,(intvec *)dd);
1492  break;
1493  case BIGINTMAT_CMD:
1494  fputs("19 ",d->f_write);
1495  ssiWriteBigintmat(d,(bigintmat *)dd);
1496  break;
1497  default:
1498  if (tt>MAX_TOK)
1499  {
1500  blackbox *b=getBlackboxStuff(tt);
1501  fputs("20 ",d->f_write);
1502  b->blackbox_serialize(b,dd,l);
1503  }
1504  else
1505  {
1506  Werror("not implemented (t:%d, rtyp:%d)",tt, data->rtyp);
1507  d->level=0;
1508  return TRUE;
1509  }
1510  break;
1511  }
1512  if (d->level<=1) { fputc('\n',d->f_write); fflush(d->f_write); }
1513  data=data->next;
1514  }
1515  d->level--;
1516  return FALSE;
1517 }
ip_command * command
Definition: ipid.h:24
const poly a
Definition: syzextra.cc:212
Definition: tok.h:85
Definition: attrib.h:15
Definition: lists.h:22
#define FALSE
Definition: auxiliary.h:140
Definition: tok.h:42
Matrices of numbers.
Definition: bigintmat.h:51
Definition: tok.h:170
#define TRUE
Definition: auxiliary.h:144
#define M
Definition: sirandom.c:24
ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition: polys.cc:12
Definition: intvec.h:16
Definition: tok.h:58
while(1)
Definition: libparse.cc:1442
Definition: tok.h:88
#define NULL
Definition: omList.c:10
attr next
Definition: attrib.h:21
Definition: tok.h:96
Definition: tok.h:126
polyrec * poly
Definition: hilb.h:10
int BOOLEAN
Definition: auxiliary.h:131
const poly b
Definition: syzextra.cc:213
#define NONE
Definition: tok.h:173
void Werror(const char *fmt,...)
Definition: reporter.cc:199
int l
Definition: cfEzgcd.cc:94
#define COMMAND
Definition: tok.h:33
blackbox * getBlackboxStuff(const int t)
return the structure to the type given by t
Definition: blackbox.cc:20