X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=rset%2Frset.c;h=26ba709bc9d6cfc9b1599be9ec6054a1b6b3f578;hb=647212270fdb2030f6a1ab1f9880874f531847b2;hp=0a2f92a0d233e4ed75fae52df45a32fcb3e437ad;hpb=42b0747acfaaf94e94fd6c20b4cd97e10ded0ae0;p=idzebra-moved-to-github.git diff --git a/rset/rset.c b/rset/rset.c index 0a2f92a..26ba709 100644 --- a/rset/rset.c +++ b/rset/rset.c @@ -1,41 +1,241 @@ -/* - * Copyright (C) 1994-1995, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: rset.c,v $ - * Revision 1.4 1995-09-06 16:11:56 adam - * More work on boolean sets. - * - * Revision 1.3 1995/09/04 15:20:39 adam - * More work on temp sets. is_open member removed. - * - * Revision 1.2 1995/09/04 12:33:56 adam - * Various cleanup. YAZ util used instead. - * - * Revision 1.1 1994/11/04 13:21:28 quinn - * Working. +/* $Id: rset.c,v 1.44 2005-03-30 09:25:24 adam Exp $ + Copyright (C) 1995-2005 + Index Data ApS + +This file is part of the Zebra server. + +Zebra is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Zebra is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with Zebra; see the file LICENSE.zebra. If not, write to the +Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. +*/ + +#include +#include +#include +#include +#include +#include + +static int log_level = 0; +static int log_level_initialized = 0; + +/** \fn rfd_create_base(RSET rs) * + * creates an rfd. Either allocates a new one, in which case the priv + * pointer is null, and will have to be filled in, or picks up one + * from the freelist, in which case the priv is already allocated, + * and presumably everything that hangs from it as well */ +RSFD rfd_create_base(RSET rs) +{ + RSFD rnew = rs->free_list; -#include -#include + if (rnew) + { + rs->free_list = rnew->next; + assert(rnew->rset==rs); + yaz_log(log_level, "rfd_create_base (fl): rfd=%p rs=%p fl=%p priv=%p", + rnew, rs, rs->free_list, rnew->priv); + } + else + { + rnew = nmem_malloc(rs->nmem, sizeof(*rnew)); + rnew->priv = NULL; + rnew->rset = rs; + yaz_log(log_level, "rfd_create_base (new): rfd=%p rs=%p fl=%p priv=%p", + rnew, rs, rs->free_list, rnew->priv); + } + rnew->next = rs->use_list; + rs->use_list = rnew; + return rnew; +} -#include +/** \fn rfd_delete_base + * + * puts an rfd into the freelist of the rset. Only when the rset gets + * deleted, will all the nmem disappear */ +void rfd_delete_base(RSFD rfd) +{ + RSFD *pfd; + RSET rs = rfd->rset; + yaz_log(log_level, "rfd_delete_base: rfd=%p rs=%p priv=%p fl=%p", + rfd, rs, rfd->priv, rs->free_list); + for (pfd = &rs->use_list; *pfd; pfd = &(*pfd)->next) + if (*pfd == rfd) + { + *pfd = (*pfd)->next; + rfd->next = rs->free_list; + rs->free_list = rfd; + return; + } + yaz_log(YLOG_WARN, "rset_close handle not found. type=%s", + rs->control->desc); +} + +RSET rset_create_base(const struct rset_control *sel, + NMEM nmem, const struct key_control *kcontrol, + int scope, TERMID term) +{ + RSET rnew; + NMEM M; + /* assert(nmem); */ /* can not yet be used, api/t4 fails */ + if (!log_level_initialized) + { + log_level = yaz_log_module_level("rset"); + log_level_initialized = 1; + } + + if (nmem) + M = nmem; + else + M = nmem_create(); + rnew = (RSET) nmem_malloc(M, sizeof(*rnew)); + yaz_log(log_level, "rs_create(%s) rs=%p (nm=%p)", sel->desc, rnew, nmem); + rnew->nmem = M; + if (nmem) + rnew->my_nmem = 0; + else + rnew->my_nmem = 1; + rnew->control = sel; + rnew->count = 1; /* refcount! */ + rnew->priv = 0; + rnew->free_list = NULL; + rnew->use_list = NULL; + rnew->keycontrol = kcontrol; + rnew->scope = scope; + rnew->term = term; + if (term) + term->rset = rnew; + return rnew; +} + +void rset_delete (RSET rs) +{ + (rs->count)--; + yaz_log(log_level, "rs_delete(%s), rs=%p, count=%d", + rs->control->desc, rs, rs->count); + if (!rs->count) + { + if (rs->use_list) + yaz_log(YLOG_WARN, "rs_delete(%s) still has RFDs in use", + rs->control->desc); + (*rs->control->f_delete)(rs); + if (rs->my_nmem) + nmem_destroy(rs->nmem); + } +} + +int rfd_is_last(RSFD rfd) +{ + if (rfd->rset->use_list == rfd && rfd->next == 0) + return 1; + return 0; +} + +RSET rset_dup (RSET rs) +{ + (rs->count)++; + yaz_log(log_level, "rs_dup(%s), rs=%p, count=%d", + rs->control->desc, rs, rs->count); + return rs; +} -RSET rset_create(const rset_control *sel, void *parms) +int rset_default_forward(RSFD rfd, void *buf, TERMID *term, + const void *untilbuf) { - RSET new; + int more = 1; + int cmp = rfd->rset->scope; + if (log_level) + { + yaz_log (log_level, "rset_default_forward starting '%s' (ct=%p rfd=%p)", + rfd->rset->control->desc, rfd->rset, rfd); + /* key_logdump(log_level, untilbuf); */ + } + while (cmp>=rfd->rset->scope && more) + { + if (log_level) /* time-critical, check first */ + yaz_log(log_level, "rset_default_forward looping m=%d c=%d", + more, cmp); + more = rset_read(rfd, buf, term); + if (more) + cmp = (rfd->rset->keycontrol->cmp)(untilbuf, buf); + } + if (log_level) + yaz_log (log_level, "rset_default_forward exiting m=%d c=%d", + more, cmp); - new = xmalloc(sizeof(*new)); /* make dynamic alloc scheme */ - if (!(new->control = (*sel->f_create)(sel, parms))) - return 0; - return new; + return more; } -void rset_delete(RSET rs) +/** + * rset_count uses rset_pos to get the total and returns that. + * This is ok for rsisamb/c/s, and for some other rsets, but in case of + * booleans etc it will give bad estimate, as nothing has been read + * from that rset + */ +zint rset_count(RSET rs) +{ + double cur, tot; + RSFD rfd = rset_open(rs, 0); + rset_pos(rfd, &cur, &tot); + rset_close(rfd); + return (zint) tot; +} + + +/** rset_get_no_terms is a getterms function for those that don't have any */ +void rset_get_no_terms(RSET ct, TERMID *terms, int maxterms, int *curterm) +{ + return; +} + +/* rset_get_one_term gets that one term from an rset. Used by rsisamX */ +void rset_get_one_term(RSET ct,TERMID *terms,int maxterms,int *curterm) +{ + if (ct->term) + { + if (*curterm < maxterms) + terms[*curterm] = ct->term; + (*curterm)++; + } +} + + +TERMID rset_term_create (const char *name, int length, const char *flags, + int type, NMEM nmem) + { - rset_close(rs); - (*rs->control->f_delete)(rs->control); - xfree(rs); + TERMID t; + yaz_log (log_level, "term_create '%s' %d f=%s type=%d nmem=%p", + name, length, flags, type, nmem); + t= (TERMID) nmem_malloc(nmem, sizeof(*t)); + if (!name) + t->name = NULL; + else if (length == -1) + t->name = nmem_strdup(nmem, name); + else + { + t->name = (char*) nmem_malloc(nmem, length+1); + memcpy (t->name, name, length); + t->name[length] = '\0'; + } + if (!flags) + t->flags = NULL; + else + t->flags = nmem_strdup(nmem, flags); + t->type = type; + t->rankpriv = 0; + t->rset = 0; + return t; }