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110 lines
1.9 KiB
C
110 lines
1.9 KiB
C
/* id.c - keep track of the next id to be given out */
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#include "portable.h"
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#include <stdio.h>
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#include <ac/socket.h>
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include "slap.h"
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#include "back-bdb2.h"
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/* reading and writing NEXTID is handled in txn.c */
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#define next_id_read(be) bdb2i_get_nextid( (be) )
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#define next_id_write(be,id) bdb2i_put_nextid( (be), (id) )
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int
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bdb2i_next_id_save( BackendDB *be )
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{
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struct ldbminfo *li = (struct ldbminfo *) be->be_private;
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ID id = bdb2i_next_id_get( be );
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int rc;
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rc = next_id_write( be, id );
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if (rc == 0) {
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li->li_nextid_wrote = id;
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}
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return rc;
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}
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ID
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bdb2i_next_id( BackendDB *be )
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{
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struct ldbminfo *li = (struct ldbminfo *) be->be_private;
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ID id;
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/* first time in here since startup - try to read the nexid */
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if ( li->li_nextid == NOID ) {
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li->li_nextid = next_id_read( be );
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if ( li->li_nextid == NOID ) {
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li->li_nextid = 1;
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}
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#if SLAPD_NEXTID_CHUNK > 1
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li->li_nextid_wrote = li->li_nextid;
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#endif
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}
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id = li->li_nextid++;
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#if SLAPD_NEXTID_CHUNK > 1
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if ( li->li_nextid > li->li_nextid_wrote ) {
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li->li_nextid_wrote += SLAPD_NEXTID_CHUNK;
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(void) next_id_write( be, li->li_nextid_wrote );
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}
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#else
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(void) next_id_write( be, li->li_nextid );
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#endif
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return( id );
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}
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void
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bdb2i_next_id_return( BackendDB *be, ID id )
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{
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#ifdef SLAPD_NEXTID_RETURN
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struct ldbminfo *li = (struct ldbminfo *) be->be_private;
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if ( id != li->li_nextid - 1 ) {
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return;
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}
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li->li_nextid--;
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#if !( SLAPD_NEXTID_CHUNK > 1 )
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(void) next_id_write( be, li->li_nextid );
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#endif
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#endif
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}
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ID
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bdb2i_next_id_get( BackendDB *be )
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{
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struct ldbminfo *li = (struct ldbminfo *) be->be_private;
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ID id;
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/* first time in here since startup - try to read the nexid */
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if ( li->li_nextid == NOID ) {
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li->li_nextid = next_id_read( be );
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if ( li->li_nextid == NOID ) {
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li->li_nextid = 1;
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}
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#if SLAPD_NEXTID_CHUNK > 1
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li->li_nextid_wrote = li->li_nextid;
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#endif
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}
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id = li->li_nextid;
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return( id );
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}
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