static char rcsid[] = "$Id: pvmdmimd.c,v 1.2 2009/01/30 21:23:07 pvmsrc Exp $"; /* * PVM version 3.4: Parallel Virtual Machine System * University of Tennessee, Knoxville TN. * Oak Ridge National Laboratory, Oak Ridge TN. * Emory University, Atlanta GA. * Authors: J. J. Dongarra, G. E. Fagg, M. Fischer * G. A. Geist, J. A. Kohl, R. J. Manchek, P. Mucci, * P. M. Papadopoulos, S. L. Scott, and V. S. Sunderam * (C) 1997 All Rights Reserved * * NOTICE * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby granted * provided that the above copyright notice appear in all copies and * that both the copyright notice and this permission notice appear in * supporting documentation. * * Neither the Institutions (Emory University, Oak Ridge National * Laboratory, and University of Tennessee) nor the Authors make any * representations about the suitability of this software for any * purpose. This software is provided ``as is'' without express or * implied warranty. * * PVM version 3 was funded in part by the U.S. Department of Energy, * the National Science Foundation and the State of Tennessee. */ /* * pvmdmimd.c * * MPP interface. * * void mpp_init(int argc, char **argv): * Initialization. Create a table to keep track of active nodes. * argc, argv: passed from main. * * int mpp_load( struct waitc_spawn *wxp ) * * Load executable onto nodes; create new entries in task table, * encode node number and process type into task IDs, etc. * * Construction of Task ID: * * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 * +-+-+-----------------------+-+-----+--------------------------+ * |s|g| host index |n| prt | node # (16384) | * +-+-+-----------------------+-+-----+--------------------------+ * * The "n" bit is set for node task but clear for host task. * * flags: exec options; * name: executable to be loaded; * argv: command line argument for executable * count: number of tasks to be created; * tids: array to store new task IDs; * ptid: parent task ID. * * mpp_new(int count, int ptid): * Allocate a set of nodes. (called by mpp_load()) * count: number of nodes; ptid: parent task ID. * * int mpp_output(): * Send all pending packets to nodes via native send. Node number * and process type are extracted from task ID. * * int mpp_mcast(int src, struct pkt pp, int tids[], int ntask): * Global send. * src: source task ID; * pp: packet; * tids: list of destination task IDs; * ntask: how many. * * int mpp_probe(): * Probe for pending packets from nodes (non-blocking). Returns * 1 if packets are dectected, otherwise 0. * * void mpp_input(): * Receive pending packets (from nodes) via native recv. * * struct task *mpp_find(int pid): * Find a task in task table by its Unix pid. * * void mpp_free(struct task *tp): * Remove node/process-type from active list. * tp: task pointer. * $Log: pvmdmimd.c,v $ Revision 1.2 2009/01/30 21:23:07 pvmsrc Fixed up insecure usage of fopen() for creating/writing/appending files. - replace with open(...O_EXCL...) and fdopen()... (Spanker=kohl) Revision 1.1 2004/01/14 17:34:27 pvmsrc New AIX5SP2 arch. (Spanker=kohl) Revision 1.4 2002/02/21 23:19:01 pvmsrc Added new (not to be documented!) PVM_MAX_TASKS env var support. - for Mahir Lokvancic . - forcefully limits the number of tasks that can attach to a pvmd, required on Solaris in rare circumstances when hard FD_SETSIZE limit is reached, and all hell breaks loose... - check return for task_new() call, can now produce NULL ptr, indicating PvmOutOfRes... (Spanker=kohl) Revision 1.3 2001/09/25 21:19:00 pvmsrc Minor TMPNAMFUN()/tmpnam() cleanup. - moved macro def to pvm3.h, renamed PVMTNPMAN(). - same for LEN_OF_TMP_NAM -> PVMTMPNAMLEN. - mostly a huge waste of time, since *both* tmpnam() & mktemp() produce the same "dangerous" warning message in Linux/gcc... - damn. (Spanker=kohl) Revision 1.2 2000/02/17 21:10:16 pvmsrc Cleaned up comments... mpp_load() args... (Spanker=kohl) * Revision 1.1 1998/02/23 21:31:44 pvmsrc * Copied from SP2MPI. * * Revision 1.10 1997/10/01 15:36:06 pvmsrc * Removed unnecessary #include "fromlib.h" header. * - all consts now included in pvm3.h... * - header file eliminated. * (Spanker=kohl) * * Revision 1.9 1997/08/27 20:18:58 pvmsrc * Added blank args (0,0,0) in mpp_load() to make it call forkexec correctly. * Protocol needs to be changed to allow taskers to access IBM poe directly. * (Spanker=fagg) * * Revision 1.8 1997/07/09 13:54:58 pvmsrc * Fixed Author Header. * * Revision 1.7 1997/06/02 13:48:38 pvmsrc * Moved #include host.h above #include waitc.h. * Removed old mesg.h include... gone baby. * * Revision 1.6 1997/05/06 20:14:36 pvmsrc * Catch stdout/stderr correctly and redirect to outtid,tag,ctx * * Revision 1.5 1997/05/05 20:08:56 pvmsrc * Pass outctx and trcctx to mpp tasks. * * Revision 1.4 1997/05/02 13:52:50 pvmsrc * Start up MPI jobs correctly and get them configured. * * Revision 1.3 1997/03/25 15:52:21 pvmsrc * PVM patches from the base 3.3.10 to 3.3.11 versions where applicable. * Originals by Bob Manchek. Altered by Graham Fagg where required. * -IP enabled over switch * -RMPOOL env can be used instead of host list * * Revision 1.2 1997/01/28 19:30:57 pvmsrc * New Copyright Notice & Authors. * * Revision 1.1 1996/09/23 23:15:09 pvmsrc * Initial revision * * Revision 1.3 1996/05/14 14:35:59 manchek * inc'd changes from chulho@kgn.ibm.com * * Revision 1.2 1995/07/25 17:41:27 manchek * mpp_output returns int * * Revision 1.1 1995/05/30 17:23:56 manchek * Initial revision * * Revision 1.3 1994/06/03 20:54:24 manchek * version 3.3.0 * * Revision 1.2 1993/12/20 15:39:47 manchek * patch 6 from wcj * * Revision 1.1 1993/08/30 23:35:09 manchek * Initial revision * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef SYSVSTR #include #define CINDEX(s,c) strchr(s,c) #else #include #define CINDEX(s,c) index(s,c) #endif #include #include #include "global.h" #include "host.h" #include "waitc.h" #include "pvmalloc.h" #include "pkt.h" #include "task.h" #include "listmac.h" #include "pvmdmp.h" #include "pvmmimd.h" #include "bfunc.h" #define MPICOMM "/usr/bin/poe" #define MPIOPT1 "-procs" #define MPIOPT2 "-euilib" #define MPIOPT3 "-hfile" #define MPIOPT4 "-rmpool" #define MPIOPARG2 "us" /* options: -procs # -euilib us */ #define MPIOPARG3 "ip" /* Enable IP over switch */ #define MPIARGC 7 /* number of command line arguments */ char *getenv(); /* Global */ extern int pvmdebmask; /* from pvmd.c */ extern char **epaths; /* from pvmd.c */ extern int myhostpart; /* from pvmd.c */ extern int tidhmask; /* from pvmd.c */ extern int ourudpmtu; /* from pvmd.c */ extern struct htab *hosts; /* from pvmd.c */ extern struct task *locltasks; /* from task.c */ int tidtmask = TIDPTYPE; /* mask for ptype field of tids */ int tidnmask = TIDNODE; /* mask for node field of tids */ /* private */ static int myndf = 0; static struct nodeset *busynodes; /* active nodes; ordered by proc type */ static char pvmtxt[512]; /* scratch for error log */ static int ptypemask; /* mask; we use these bits of ptype in tids */ static char nodefile[PVMTMPNAMLEN]; /* tmp node file */ static char **nodelist = 0; /* default poe node list */ static int partsize = 0; /* number of nodes allocated */ static int hostfileused = TRUE; /* Check if MP_HOSTFILE used */ static char defaultpool[64]="1"; /* default MP_POOL if not set */ static char mpiadapter[]={MPIOPARG2}; /* default User-Space */ static int sp2pvminfo[SIZEHINFO]; void mpp_init(argc, argv) int *argc; char **argv; { struct stat sb; char *hfn; /* host file name */ char nname[128]; /* node name */ FILE *hfp; int i; if ((hfn = getenv("LOADLBATCH"))) { if (strcmp(hfn, "yes") == 0) { if ((hfn = getenv("LOADL_PROCESSOR_LIST"))) { sprintf(pvmtxt, "LOADL_PROCESSOR_LIST=%s.\n",hfn); pvmlogperror(pvmtxt); hostfileused=FALSE; for (hfn;*hfn!='\0';hfn++) { if (*hfn == ' ') partsize++; } } else { sprintf(pvmtxt, "LOADL_PROCESSOR_LIST=%s - is not set\n",hfn); pvmlogperror(pvmtxt); exit(PvmHostFail); } } else { sprintf(pvmtxt,"LOADLBATCH=%s - not set to yes\n",hfn); pvmlogperror(pvmtxt); exit(PvmHostFail); } } else if ((hfn = getenv("MP_PROCS"))) { if ((partsize = atoi(hfn)) < 1) { sprintf(pvmtxt,"MP_PROCS=%d must be >= to 1\n",partsize); pvmlogperror(pvmtxt); exit(PvmHostFail); } hostfileused=FALSE; if ((hfn = getenv("MP_RMPOOL"))) { if (atoi(hfn) < 0) { sprintf(pvmtxt, "MP_RMPOOL=%d must be >= to 0\n",defaultpool); pvmlogperror(pvmtxt); exit(PvmHostFail); } strcpy(defaultpool,hfn); } } else if ((hfn = getenv("MP_HOSTFILE"))) { if (!(hfp = fopen(hfn, "r"))) { sprintf(pvmtxt, "sp2hostfile() fopen %s\n", hfn); pvmlogperror(pvmtxt); exit(PvmHostFail); } hostfileused=TRUE; while (fscanf(hfp, "%s", nname) != EOF) partsize++; nodelist = TALLOC(partsize, char*, "nname"); rewind(hfp); for (i = 0; i < partsize; i++) { fscanf(hfp, "%s", nname); nodelist[i] = STRALLOC(nname); } fclose(hfp); } else { pvmlogerror("mpp_init() no POE host file.\n"); pvmlogerror("mpp_init() MP_PROCS, MP_RMPOOL or MP_HOSTFILE must be set.\n"); exit(PvmHostFail); } if ((hfn = getenv("MP_EUILIB"))) { if (strcmp(hfn, "ip") == 0) { strcpy(mpiadapter,MPIOPARG3); /* IP over switch */ } } sprintf(pvmtxt, "%d nodes allocated.\n", partsize); pvmlogerror(pvmtxt); busynodes = TALLOC(1, struct nodeset, "nsets"); BZERO((char*)busynodes, sizeof(struct nodeset)); busynodes->n_link = busynodes; busynodes->n_rlink = busynodes; ptypemask = tidtmask >> (ffs(tidtmask) - 1); } /* create tmp poe host file from default */ char * sp2hostfile(first, count) int first; /* first node in the set */ int count; /* number of nodes requested */ { int i; FILE *tmpfp; if (partsize < count) { sprintf(pvmtxt, "sp2hostfile() need at least %d nodes\n", count+1); pvmlogperror(pvmtxt); return (char *)0; } (void)PVMTMPNAMFUN(nodefile); if ((fd = open( nodefile, O_RDWR|O_CREAT|O_EXCL|O_TRUNC, 0600 )) < 0) { sprintf(pvmtxt, "sp2hostfile() open %s", nodefile); pvmlogperror(pvmtxt); return (char *)0; } if (!(tmpfp = fdopen( fd, "w" ))) { sprintf(pvmtxt, "sp2hostfile() fdopen %s", nodefile); pvmlogperror(pvmtxt); return (char *)0; } if (pvmdebmask & PDMNODE) { sprintf(pvmtxt, "sp2hostfile() POE host file: %s\n", nodefile); pvmlogerror(pvmtxt); } for (i = first; i < count + first; i++) fprintf(tmpfp, "%s\n", nodelist[i]); fclose(tmpfp); return nodefile; } /* * find a set of free nodes from nodelist; assign ptype sequentially, * only tasks spawned together get the same ptype */ struct nodeset * mpp_new(count, ptid) int count; /* number of nodes requested */ int ptid; /* parent's tid */ { struct nodeset *sp, *newp, *sp2; int last = -1; int ptype = 0; if (!(newp = TALLOC(1, struct nodeset, "nsets"))) { pvmlogerror("mpp_new() can't get memory\n"); pvmbailout(0); } BZERO((char*)newp, sizeof(struct nodeset)); newp->n_size = count; for (sp = busynodes->n_link; sp != busynodes; sp = sp->n_link) { if (sp->n_first - last > count) break; last = sp->n_first + sp->n_size - 1; /* if (sp->n_link == busynodes && partsize - last > count) break; */ if (ptype <= sp->n_ptype) ptype = sp->n_ptype + 1; } if (sp == busynodes && partsize - last <= count) { pvmlogerror("mpp_new() not enough nodes in partition\n"); PVM_FREE(newp); return (struct nodeset *)0; } for (sp2 = busynodes->n_link; sp2 != busynodes; sp2 = sp2->n_link) if ((sp2->n_ptype & ptypemask) == (ptype & ptypemask)) break; if (sp2 != busynodes || ptype == NPARTITIONS) { for (ptype = 0; ptype < NPARTITIONS; ptype++) { for (sp2 = busynodes->n_link; sp2 != busynodes; sp2 = sp2->n_link) if ((sp2->n_ptype & ptypemask) == (ptype & ptypemask)) break; if (sp2 == busynodes) break; } if (ptype == NPARTITIONS) { pvmlogerror("mpp_new() out of ptypes: too many spawns\n"); return (struct nodeset *)0; } } done: if (pvmdebmask & PDMNODE) { sprintf(pvmtxt, "mpp_new() %d nodes %d ... ptype=%d ptid=%x\n", count, last+1, ptype, ptid); pvmlogerror(pvmtxt); } newp->n_first = last + 1; if (hostfileused) { if (!sp2hostfile(newp->n_first, count)) { PVM_FREE(newp); return (struct nodeset *)0; } } newp->n_ptype = ptype; newp->n_ptid = ptid; newp->n_alive = count - 1; LISTPUTBEFORE(sp, newp, n_link, n_rlink); return newp; } /* * remove node/ptype from active list; if tid is the last to go, shutdown * pvmhost's socket, but do not destroy the node set because pvmhost may * not exit immediately. To avoid a race condition, let mpp_output() * do the cleanup. */ void mpp_free(tp) struct task *tp; { struct nodeset *sp; int ptype; struct task *tp2; int tid = tp->t_tid; if (!TIDISNODE(tid)) return; ptype = TIDTOTYPE(tid); tp->t_txq = 0; /* don't free pvmhost's txq */ for (sp = busynodes->n_link; sp != busynodes; sp = sp->n_link) { if ((sp->n_ptype & ptypemask) == ptype) { if (pvmdebmask & PDMNODE) { sprintf(pvmtxt, "mpp_free() t%x type=%ld alive=%d\n", tid, sp->n_ptype, sp->n_alive); pvmlogerror(pvmtxt); } if (--sp->n_alive == 0) { if (tp2 = task_find(sp->n_ptid)) { tp2->t_flag |= TF_CLOSE; if (tp2->t_sock != -1) { /* wrk_fds_delete(tp2->t_sock, 3); (void)close(tp2->t_sock); tp2->t_sock = -1; */ shutdown(tp2->t_sock, 1); /* close stdout after pvmhost dies */ tp2->t_out = tp->t_out; } } /* LISTDELETE(sp, n_link, n_rlink); PVM_FREE(sp); */ } tp->t_out = -1; /* don't free shared stdout if alive > 0 */ return; } } sprintf(pvmtxt, "mpp_free() t%x not active\n", tid); pvmlogerror(pvmtxt); return; } /* load executable onto the given set of nodes */ int mpp_load( wxp ) struct waitc_spawn *wxp; { int flags = 0; /* exec options */ char *name; /* executable */ char **argv; /* arg list (argv[-1] must be there) */ int count; /* how many */ int *tids; /* array to store new tids */ int ptid; /* parent task ID */ int nenv; /* length of environment */ char **envp; /* environment strings */ int ptypepart; /* type field */ int j; struct task *tp; struct pkt *hosttxq; /* out-going queue of pvmhost */ int err = 0; struct nodeset *sp; char c[128]; /* buffer to store count, name.host */ char **ar = 0; int nargs; char **ep, **eplist; char path[MAXPATHLEN]; struct stat sb; char **av; int hostout; /* stdout of pvmhost */ struct hostd *hp = hosts->ht_hosts[hosts->ht_local]; int hostpid; /* Unix pid of pvmhost */ char htid[128]; /* buffer to store pvmhost tid */ char *p; static char *nullep[] = { "", 0 }; /* -- initialize some variables from the waitc_spawn struct -- */ name = wxp->w_argv[0]; argv = wxp->w_argv; count = wxp->w_veclen; tids = wxp->w_vec; ptid = wxp->w_ptid; nenv = wxp->w_nenv; envp = wxp->w_env; eplist = CINDEX(name, '/') ? nullep : epaths; for (ep = eplist; *ep; ep++) { /* search for file */ (void)strcpy(path, *ep); if (path[0]) (void)strcat(path, "/"); (void)strncat(path, name, sizeof(path) - strlen(path) - 1); if (stat(path, &sb) == -1 || ((sb.st_mode & S_IFMT) != S_IFREG) || !(sb.st_mode & S_IEXEC)) { if (pvmdebmask & PDMTASK) { sprintf(pvmtxt, "mpp_load() stat failed <%s>\n", path); pvmlogerror(pvmtxt); } continue; } if (!(sp = mpp_new(count+1, ptid))) { err = PvmOutOfRes; goto done; } ptypepart = (sp->n_ptype << (ffs(tidtmask) - 1)) | TIDONNODE; if (argv) for (nargs = 0; argv[nargs]; nargs++); else nargs = 0; /* ar[-1], poe, -procs, #, -euilib, us, -hfile fname */ nargs += MPIARGC + 1; av = TALLOC(nargs + 1, char*, "argv"); av++; /* reserve room for debugger */ BZERO((char*)av, nargs * sizeof(char*)); av[0] = MPICOMM; av[1] = path; av[--nargs] = 0; if (hostfileused) { av[--nargs] = nodefile; av[--nargs] = MPIOPT3; } else { av[--nargs] = defaultpool; av[--nargs] = MPIOPT4; } av[--nargs] = mpiadapter; av[--nargs] = MPIOPT2; sprintf(c, "%d", count+1); av[--nargs] = c; av[--nargs] = MPIOPT1; for (j = 2; j < nargs; j++) av[j] = argv[j - 1]; /* poe name argv -procs # -euilib us */ /* if ((sock = mksock()) == -1) { err = PvmSysErr; goto done; } */ if (flags & PvmTaskDebug) av++; /* pdbx name -procs # -euilib us */ /* if (err = forkexec(flags, av[0], av, 0, (char **)0, &tp)) */ if (err = forkexec(flags, av[0], av, 0, (char **)0, 0, 0, 0, &tp)) goto done; tp->t_ptid = ptid; PVM_FREE(tp->t_a_out); sprintf(c, "%s.host", name); tp->t_a_out = STRALLOC(c); sp->n_ptid = tp->t_tid; /* pvmhost's tid */ hosttxq = tp->t_txq; hostout = tp->t_out; hostpid = tp->t_pid; tp->t_out = -1; sprintf(htid, "PVMHTID=%d", tp->t_tid); p = STRALLOC(htid); pvmputenv(p); sp2pvminfo[0] = TDPROTOCOL; sp2pvminfo[1] = myhostpart + ptypepart; sp2pvminfo[2] = ptid; sp2pvminfo[3] = MAXFRAGSIZE; sp2pvminfo[4] = myndf; sp2pvminfo[5] = partsize; sp2pvminfo[6] = wxp->w_outtid; sp2pvminfo[7] = wxp->w_outtag; sp2pvminfo[8] = wxp->w_outctx; sp2pvminfo[9] = wxp->w_trctid; sp2pvminfo[10] = wxp->w_trctag; sp2pvminfo[11] = wxp->w_trcctx; /* if (sockconn(sock, tp, pvminfo) == -1) { err = PvmSysErr; task_free(tp); goto done; } */ /* XXX task may not be on same host; can't do auth with tmp file */ tp->t_flag |= TF_CONN; if (pvmdebmask & PDMTASK) { sprintf(pvmtxt, "mpp_load() %d type=%d ptid=%x t%x...\n", count, sp->n_ptype, ptid, myhostpart + ptypepart); pvmlogerror(pvmtxt); } /* create new task structs */ for (j = 0; j < count; j++) { if ((tp = task_new(myhostpart + ptypepart + j)) == NULL) { err = PvmOutOfRes; goto done; } tp->t_a_out = STRALLOC(name); tp->t_ptid = ptid; tp->t_flag |= TF_CONN; /* no need for the auth crap */ tids[j] = tp->t_tid; PVM_FREE(tp->t_txq); tp->t_txq = hosttxq; /* node tasks share pvmhost's txq */ tp->t_out = hostout; /* and stdout */ tp->t_pid = hostpid; /* pvm_kill should kill pvmhost */ tp->t_outtid = wxp->w_outtid; /* catch stdout/stderr */ tp->t_outtag = wxp->w_outtag; tp->t_outctx = wxp->w_outctx; } return 0; } if (pvmdebmask & PDMTASK) { sprintf(pvmtxt, "mpp_load() didn't find <%s>\n", name); pvmlogerror(pvmtxt); } err = PvmNoFile; done: for (j = 0; j < count; j++) tids[j] = err; return err; } #if 0 /* kill poe process */ void sp2kill(a_out, node) char *a_out; int node; { FILE *fp; int i; char nname[128]; /* node name */ char comm[512]; /* command to issue */ char *hfn; /* host file name */ struct stat sb; char *av[8]; /* for rsh args */ int ac; int pid = -1; /* pid of rsh */ node++; if ((hfn = getenv("MP_HOSTFILE")) || stat(hfn = "host.list", &sb) != -1) { if (fp = fopen(hfn, "r")) { for (i = 0; i < node; i++) fscanf(fp, "%s", nname); fclose(hfn); if ((pid = fork()) == -1) { pvmlogperror("sp2kill() fork"); return; } if (!pid) { ac = 0; av[ac++] = "/usr/bin/rsh"; av[ac++] = nname; av[ac++] = "poekill"; av[ac++] = a_out; av[ac++] = 0; for (i = getdtablesize(); --i > 2; ) (void)close(i); execvp(av[0], av); _exit(1); } } else pvmlogperror("sp2kill() fopen"); return; } pvmlogerror("sp2kill() no host file"); } #endif /*0*/ void mpp_kill(tp, signum) struct task *tp; int signum; { if (TIDISNODE(tp->t_tid)) { if (signum == SIGTERM || signum == SIGKILL) { /* sp2kill(tp->t_a_out, tp->t_tid & tidnmask); */ (void)kill(tp->t_pid, signum); mpp_free(tp); task_cleanup(tp); task_free(tp); } else { sprintf(pvmtxt,"mpp_kill() signal %d to node t%x ignored\n", signum, tp->t_tid); pvmlogerror(pvmtxt); } } else (void)kill(tp->t_pid, signum); } /* * Add pvmhost's socket to wfds if there are packets waiting to * be sent to a related node task. Node tasks have no sockets; * they share pvmhost's packet queue (txq). Pvmhost simply * forwards any packets it receives to the appropriate node. */ int mpp_output(dummy1, dummy2) struct task *dummy1; struct pkt *dummy2; { struct nodeset *sp, *sp2; struct task *tp; int ptype; for (sp = busynodes->n_link; sp != busynodes; sp = sp->n_link) if ((tp = task_find(sp->n_ptid))) { if (tp->t_txq->pk_link->pk_buf && tp->t_sock != -1) wrk_fds_add(tp->t_sock, 2); } else { if (sp->n_alive) { sprintf(pvmtxt, "mpp_output() pvmhost %d died!\n", sp->n_ptype); pvmlogerror(pvmtxt); /* clean up tasks it serves */ ptype = sp->n_ptype & ptypemask; for (tp = locltasks->t_link; tp != locltasks; tp = tp->t_link) if (TIDISNODE(tp->t_tid) && TIDTOTYPE(tp->t_tid) == ptype) { tp->t_txq = 0; tp = tp->t_rlink; task_cleanup(tp->t_link); task_free(tp->t_link); } } /* pvmhost has died, destroy the node set */ sp2 = sp; sp = sp->n_rlink; LISTDELETE(sp2, n_link, n_rlink); PVM_FREE(sp2); } return 0; } /* replace tm_connect and tm_conn2 */ int mpp_conn(tp, tp2) struct task *tp; struct task *tp2; { struct nodeset *sp; int pvminfo[SIZEHINFO]; /* host info */ int ptypepart; /* type field */ if (pvmdebmask & PDMNODE) { sprintf(pvmtxt, "mpp_conn() pvmhost %x", tp2->t_tid); pvmlogerror(pvmtxt); } tp2->t_sock = tp->t_sock; tp2->t_sad = tp->t_sad; tp2->t_salen = tp->t_salen; tp2->t_flag |= TF_CONN; tp->t_sock = -1; for (sp = busynodes->n_link; sp != busynodes; sp = sp->n_link) if (sp->n_ptid == tp2->t_tid) break; if (sp == busynodes) { pvmlogerror("mpp_conn() task is not pvmhost\n"); return -1; } ptypepart = (sp->n_ptype << (ffs(tidtmask) - 1)) | TIDONNODE; if (write(tp2->t_sock, sp2pvminfo, sizeof(sp2pvminfo)) != sizeof(sp2pvminfo)) { pvmlogperror("mpp_conn() write"); return -1; } return 0; } #if 0 /* * Create socket to talk to pvmhost. * Return socket descriptor if successful, -1 otherwise. */ int mksock() { struct hostd *hp = hosts->ht_hosts[hosts->ht_local]; struct sockaddr_in sin; char buf[128]; char *p; int cc; int sock; if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { pvmlogperror("mksock() socket"); return -1; } sin = hp->hd_sad; if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) { pvmlogperror("mksock() bind"); (void)close(sock); return -1; } cc = sizeof(sin); if (getsockname(sock, (struct sockaddr*)&sin, &cc) == -1) { pvmlogperror("mksock() getsockname"); (void)close(sock); return -1; } if (listen(sock, 1) == -1) { pvmlogperror("mksock() listen"); (void)close(sock); return -1; } p = inadport_hex(&sin); sprintf(buf, "PVMSOCK=%s", p); p = STRALLOC(buf); pvmputenv(p); return sock; } /* * Wait for connect request from pvmhost and establish connection. * Return 0 if successful, -1 otherwise. * Close listening socket. */ int sockconn(sock, tp, hinfo) int sock; /* listening post */ struct task *tp; /* pvm host */ int hinfo[]; /* host info to pass along */ { int i; if ((tp->t_sock = accept(sock, (struct sockaddr*)&tp->t_sad, &tp->t_salen)) == -1) { pvmlogperror("sockconn() accept"); return -1; } else { if (pvmdebmask & (PDMPACKET|PDMTASK)) { sprintf(pvmtxt, "sockconn() accept from %s sock %d\n", inadport_decimal(&tp->t_sad), tp->t_sock); pvmlogerror(pvmtxt); } close(sock); #ifndef NOSOCKOPT i = 1; if (setsockopt(tp->t_sock, IPPROTO_TCP, TCP_NODELAY, (char*)&i, sizeof(int)) == -1) pvmlogperror("sockconn() setsockopt"); #endif } if (write(tp->t_sock, hinfo, SIZEHINFO*sizeof(int)) != SIZEHINFO*sizeof(int)) { pvmlogperror("sockconn: write"); return -1; } if ((i = fcntl(tp->t_sock, F_GETFL, 0)) == -1) pvmlogperror("sockconn: fcntl"); else { i |= O_NDELAY; (void)fcntl(tp->t_sock, F_SETFL, i); } wrk_fds_add(tp->t_sock, 1); return 0; } #endif /*0*/