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avoid potential deadlock?

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This commit is contained in:
Pierangelo Masarati 2008-04-28 23:26:45 +00:00
parent 64315e3087
commit 2fe411e337
1 changed files with 6 additions and 1 deletions
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7
servers/slapd/back-monitor/cache.c
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@ -154,13 +154,18 @@ monitor_cache_get(
*ep = NULL;
tmp_mc.mc_ndn = *ndn;
retry:;
ldap_pvt_thread_mutex_lock( &mi->mi_cache_mutex );
mc = ( monitor_cache_t * )avl_find( mi->mi_cache,
( caddr_t )&tmp_mc, monitor_cache_cmp );
if ( mc != NULL ) {
/* entry is returned with mutex locked */
monitor_cache_lock( mc->mc_e );
if ( monitor_cache_trylock( mc->mc_e ) ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_cache_mutex );
ldap_pvt_thread_yield();
goto retry;
}
*ep = mc->mc_e;
}