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ITS#141: move body of next_id_save() into new function next_id_get_save(),

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so the (read id, write id) sequence is protected by li_nextid_mutex.
This commit is contained in:
Hallvard Furuseth 1999-04-29 22:26:58 +00:00
parent d804c7b137
commit de810942e1
1 changed files with 20 additions and 9 deletions
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29
servers/slapd/back-ldbm/nextid.c
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@ -13,6 +13,11 @@
#include "slap.h"
#include "back-ldbm.h"
static ID next_id_read( Backend *be );
static int next_id_write( Backend *be, ID id );
static ID next_id_get_save( Backend *be, int do_save );
static ID
next_id_read( Backend *be )
{
@ -84,15 +89,7 @@ next_id_write( Backend *be, ID id )
int
next_id_save( Backend *be )
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
ID id = next_id_get( be );
int rc = next_id_write( be, id );
if (rc == 0) {
li->li_nextid_wrote = id;
}
return rc;
return( next_id_get_save( be, 1 ) == NOID ? -1 : 0 );
}
ID
@ -156,6 +153,12 @@ next_id_return( Backend *be, ID id )
ID
next_id_get( Backend *be )
{
return next_id_get_save( be, 0 );
}
static ID
next_id_get_save( Backend *be, int do_save )
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
ID id;
@ -177,6 +180,14 @@ next_id_get( Backend *be )
id = li->li_nextid;
if ( do_save ) {
if ( next_id_write( be, id ) == 0 ) {
li->li_nextid_wrote = id;
} else {
id = NOID;
}
}
ldap_pvt_thread_mutex_unlock( &li->li_nextid_mutex );
return( id );