Import slapd changes from devel including:

shutdown without busy loop, explicit yield func no longer mandatory
	use pthread_detach() to detach threads (instead of creating them
		in a detached state)
	pthread_create error reporting
	moved declarations to init.c
Import configure changes:
	revamp res_search check
	remove strtok_r check

configure.in

@@ -582,11 +582,11 @@ if test $ol_with_threads = auto -o $ol_with_threads = yes \
 			if test $ac_cv_func_sched_yield = no -a \
 				$ac_cv_func_pthread_yield = no ; then
 				AC_MSG_WARN([could not locate sched_yield() or pthread_yield()])
-				AC_MSG_ERROR([POSIX Threads are not usable])
 			fi
 
 			dnl Check functions for compatibility
-			AC_CHECK_FUNCS(pthread_kill)
+			AC_CHECK_FUNCS(pthread_kill pthread_detach)
+
 			AC_CHECK_FUNCS( \
 				pthread_attr_create pthread_attr_init \
 				pthread_attr_destroy pthread_attr_delete \
@@ -856,25 +856,6 @@ int x = errno;
 		LIBS="$LTHREAD_LIBS $LIBS"
 		LTHREAD_LIBS=""
 	fi
-
-	dnl check for reentrant/threadsafe functions
-	dnl
-	dnl note: these should only be used when linking
-	dnl       with $LTHREAD_LIBS
-	dnl
-	save_CPPFLAGS="$CPPFLAGS"
-	save_LIBS="$LIBS"
-	LIBS="$LTHREAD_LIBS $LIBS"
-	AC_CHECK_FUNCS(	\
-		strtok_r \
-		gmtime_r \
-		gethostbyaddr_r gethostbyname_r \
-		feof_unlocked unlocked_feof \
-		putc_unlocked unlocked_putc \
-		flockfile ftrylockfile \
-	)
-	CPPFLAGS="$save_CPPFLAGS"
-	LIBS="$save_LIBS"
 fi  
 
 dnl ----------------------------------------------------------------

include/portable.h.in

@@ -278,27 +278,12 @@
 /* Define if you have the bcopy function.  */
 #undef HAVE_BCOPY
 
-/* Define if you have the feof_unlocked function.  */
-#undef HAVE_FEOF_UNLOCKED
-
 /* Define if you have the flock function.  */
 #undef HAVE_FLOCK
 
-/* Define if you have the flockfile function.  */
-#undef HAVE_FLOCKFILE
-
-/* Define if you have the ftrylockfile function.  */
-#undef HAVE_FTRYLOCKFILE
-
 /* Define if you have the getdtablesize function.  */
 #undef HAVE_GETDTABLESIZE
 
-/* Define if you have the gethostbyaddr_r function.  */
-#undef HAVE_GETHOSTBYADDR_R
-
-/* Define if you have the gethostbyname_r function.  */
-#undef HAVE_GETHOSTBYNAME_R
-
 /* Define if you have the gethostname function.  */
 #undef HAVE_GETHOSTNAME
 
@@ -311,9 +296,6 @@
 /* Define if you have the gettimeofday function.  */
 #undef HAVE_GETTIMEOFDAY
 
-/* Define if you have the gmtime_r function.  */
-#undef HAVE_GMTIME_R
-
 /* Define if you have the lockf function.  */
 #undef HAVE_LOCKF
 
@@ -344,6 +326,9 @@
 /* Define if you have the pthread_attr_setdetachstate function.  */
 #undef HAVE_PTHREAD_ATTR_SETDETACHSTATE
 
+/* Define if you have the pthread_detach function.  */
+#undef HAVE_PTHREAD_DETACH
+
 /* Define if you have the pthread_kill function.  */
 #undef HAVE_PTHREAD_KILL
 
@@ -353,9 +338,6 @@
 /* Define if you have the pthread_yield function.  */
 #undef HAVE_PTHREAD_YIELD
 
-/* Define if you have the putc_unlocked function.  */
-#undef HAVE_PUTC_UNLOCKED
-
 /* Define if you have the res_search function.  */
 #undef HAVE_RES_SEARCH
 
@@ -404,9 +386,6 @@
 /* Define if you have the strtok function.  */
 #undef HAVE_STRTOK
 
-/* Define if you have the strtok_r function.  */
-#undef HAVE_STRTOK_R
-
 /* Define if you have the strtol function.  */
 #undef HAVE_STRTOL
 
@@ -422,12 +401,6 @@
 /* Define if you have the thr_setconcurrency function.  */
 #undef HAVE_THR_SETCONCURRENCY
 
-/* Define if you have the unlocked_feof function.  */
-#undef HAVE_UNLOCKED_FEOF
-
-/* Define if you have the unlocked_putc function.  */
-#undef HAVE_UNLOCKED_PUTC
-
 /* Define if you have the vsnprintf function.  */
 #undef HAVE_VSNPRINTF
 

libraries/liblthread/thread.c

@@ -7,12 +7,11 @@
 #if defined( HAVE_PTHREADS )
 
 #ifndef HAVE_PTHREAD_KILL
-/***********************************************************************
- *                                                                     *
- * pthreads package with DCE - no mapping to do (except to create a    *
- * pthread_kill() routine)                                             *
- *                                                                     *
- ***********************************************************************/
+/*
+ * Some pthreads packages (ie: DCE) don't have pthread_kill()
+ * pthread_kill() routine)
+ *
+ */
 
 /* ARGSUSED */
 void
@@ -22,6 +21,19 @@ pthread_kill( pthread_t tid, int sig )
 }
 #endif /* HAVE_PTHREAD_KILL */
 
+#if !defined(HAVE_SCHED_YIELD) && !defined(HAVE_PTHREAD_YIELD)
+/*
+ * Some pthreads packages don't have sched_yield() nor
+ * the draft4 pthread_kill() routine, assume it's not
+ * needed.
+ */
+void
+pthread_yield( void )
+{
+	/* assume pthread implementation is preemptive */
+}
+#endif /* missing sched_yield() */
+
 #elif defined( HAVE_MACH_CTHREADS )
 
 /***********************************************************************

servers/slapd/connection.c

@@ -100,6 +100,9 @@ connection_operation( void *arg_v )
 
 	pthread_mutex_lock( &active_threads_mutex );
 	active_threads--;
+	if( active_threads < 1 ) {
+		pthread_cond_signal(&active_threads_cond);
+	}
 	pthread_mutex_unlock( &active_threads_mutex );
 	return NULL;
 }
@@ -109,7 +112,10 @@ connection_activity(
     Connection *conn
 )
 {
+#ifndef HAVE_PTHREAD_DETACH
 	pthread_attr_t	attr;
+#endif
+	int status;
 	struct co_arg	*arg;
 	unsigned long	tag, len;
 	long		msgid;
@@ -192,15 +198,33 @@ connection_activity(
 		free( tmpdn );
 	}
 
+#ifdef HAVE_PTHREAD_DETACH
+	if ( status = pthread_create( &arg->co_op->o_tid, NULL,
+	    connection_operation, (void *) arg ) != 0 ) {
+		Debug( LDAP_DEBUG_ANY, "pthread_create failed (%d)\n", status, 0, 0 );
+	} else {
+		pthread_mutex_lock( &active_threads_mutex );
+		active_threads++;
+		pthread_mutex_unlock( &active_threads_mutex );
+	}
+
+#if !defined(HAVE_PTHREADS_D4)
+	pthread_detach( arg->co_op->o_tid );
+#else
+	pthread_detach( &arg->co_op->o_tid );
+#endif
+
+#else /* !pthread detach */
+
 	pthread_attr_init( &attr );
 	pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_DETACHED );
 #if !defined(HAVE_PTHREADS_D4)
 	/* POSIX_THREADS or compatible
 	 * This is a draft 10 or standard pthreads implementation
 	 */
-	if ( pthread_create( &arg->co_op->o_tid, &attr,
+	if ( status = pthread_create( &arg->co_op->o_tid, &attr,
 	    connection_operation, (void *) arg ) != 0 ) {
-		Debug( LDAP_DEBUG_ANY, "pthread_create failed\n", 0, 0, 0 );
+		Debug( LDAP_DEBUG_ANY, "pthread_create failed (%d)\n", status, 0, 0 );
 	} else {
 		pthread_mutex_lock( &active_threads_mutex );
 		active_threads++;
@@ -210,9 +234,9 @@ connection_activity(
 	/*
 	 * This is a draft 4 or earlier pthreads implementation
 	 */
-	if ( pthread_create( &arg->co_op->o_tid, attr,
+	if ( status = pthread_create( &arg->co_op->o_tid, attr,
 	    connection_operation, (void *) arg ) != 0 ) {
-		Debug( LDAP_DEBUG_ANY, "pthread_create failed\n", 0, 0, 0 );
+		Debug( LDAP_DEBUG_ANY, "pthread_create failed (%d)\n", status, 0, 0 );
 	} else {
 		pthread_mutex_lock( &active_threads_mutex );
 		active_threads++;
@@ -220,4 +244,5 @@ connection_activity(
 	}
 #endif	/* pthread draft4 */
 	pthread_attr_destroy( &attr );
+#endif
 }

servers/slapd/daemon.c

@@ -36,6 +36,7 @@ int deny_severity = LOG_NOTICE;
 int		dtblsize;
 Connection	*c;
 
+static int slapd_shutdown = 0;
 static void	set_shutdown(int sig);
 static void	do_nothing  (int sig);
 
@@ -369,14 +370,13 @@ slapd_daemon(
 	}
 
 	close( tcps );
+
 	pthread_mutex_lock( &active_threads_mutex );
 	Debug( LDAP_DEBUG_ANY,
 	    "slapd shutting down - waiting for %d threads to terminate\n",
 	    active_threads, 0, 0 );
 	while ( active_threads > 0 ) {
-		pthread_mutex_unlock( &active_threads_mutex );
-		pthread_yield();
-		pthread_mutex_lock( &active_threads_mutex );
+		pthread_cond_wait(&active_threads_cond, &active_threads_mutex);
 	}
 	pthread_mutex_unlock( &active_threads_mutex );
 

servers/slapd/init.c

@@ -11,10 +11,63 @@
 #include "portable.h"
 #include "slap.h"
 
+/*
+ * read-only global variables or variables only written by the listener
+ * thread (after they are initialized) - no need to protect them with a mutex.
+ */
+int		slap_debug = 0;
+
+#ifdef LDAP_DEBUG
+int		ldap_syslog = LDAP_DEBUG_STATS;
+#else
+int		ldap_syslog;
+#endif
+
+int		ldap_syslog_level = LOG_DEBUG;
+char		*default_referral;
+time_t		starttime;
+pthread_t	listener_tid;
+int		g_argc;
+char		**g_argv;
+
+/*
+ * global variables that need mutex protection
+ */
+int				active_threads;
+pthread_mutex_t	active_threads_mutex;
+pthread_cond_t	active_threads_cond;
+
+time_t			currenttime;
+pthread_mutex_t	currenttime_mutex;
+
+pthread_mutex_t	new_conn_mutex;
+
+#ifdef SLAPD_CRYPT
+pthread_mutex_t	crypt_mutex;
+#endif
+pthread_mutex_t	strtok_mutex;
+
+int				num_conns;
+long			ops_initiated;
+long			ops_completed;
+pthread_mutex_t	ops_mutex;
+
+long			num_entries_sent;
+long			num_bytes_sent;
+pthread_mutex_t	num_sent_mutex;
+/*
+ * these mutexes must be used when calling the entry2str()
+ * routine since it returns a pointer to static data.
+ */
+pthread_mutex_t	entry2str_mutex;
+pthread_mutex_t	replog_mutex;
+
 void
 init( void )
 {
 	pthread_mutex_init( &active_threads_mutex, pthread_mutexattr_default );
+	pthread_cond_init( &active_threads_cond, pthread_condattr_default );
+
 	pthread_mutex_init( &new_conn_mutex, pthread_mutexattr_default );
 	pthread_mutex_init( &currenttime_mutex, pthread_mutexattr_default );
 	pthread_mutex_init( &strtok_mutex, pthread_mutexattr_default );

servers/slapd/main.c

@@ -11,52 +11,6 @@
 #include "slap.h"
 #include "lutil.h"			/* Get lutil_detach() */
 
-
-/*
- * read-only global variables or variables only written by the listener
- * thread (after they are initialized) - no need to protect them with a mutex.
- */
-int		ldap_debug = 0;
-#ifdef LDAP_DEBUG
-int		ldap_syslog = LDAP_DEBUG_STATS;
-#else
-int		ldap_syslog;
-#endif
-int		ldap_syslog_level = LOG_DEBUG;
-int		udp;
-int		slapd_shutdown;
-char		*default_referral;
-char		*configfile;
-time_t		starttime;
-pthread_t	listener_tid;
-int		g_argc;
-char		**g_argv;
-/*
- * global variables that need mutex protection
- */
-time_t		currenttime;
-pthread_mutex_t	currenttime_mutex;
-pthread_mutex_t	strtok_mutex;
-int		active_threads;
-pthread_mutex_t	active_threads_mutex;
-pthread_mutex_t	new_conn_mutex;
-#ifdef SLAPD_CRYPT
-pthread_mutex_t crypt_mutex;
-#endif
-long		ops_initiated;
-long		ops_completed;
-int		num_conns;
-pthread_mutex_t	ops_mutex;
-long		num_entries_sent;
-long		num_bytes_sent;
-pthread_mutex_t	num_sent_mutex;
-/*
- * these mutexes must be used when calling the entry2str()
- * routine since it returns a pointer to static data.
- */
-pthread_mutex_t	entry2str_mutex;
-pthread_mutex_t	replog_mutex;
-
 static void
 usage( char *name )
 {
@@ -70,8 +24,10 @@ main( int argc, char **argv )
 	int		inetd = 0;
 	int		port;
 	char		*myname;
+	int		udp;
 	Backend		*be = NULL;
 	FILE		*fp = NULL;
+	char		*configfile;
 
 	configfile = SLAPD_DEFAULT_CONFIGFILE;
 	port = LDAP_PORT;

servers/slapd/proto-slap.h

@@ -239,7 +239,10 @@ extern long		num_bytes_sent;
 extern long		num_entries_sent;
 extern long		ops_completed;
 extern long		ops_initiated;
+
 extern pthread_mutex_t	active_threads_mutex;
+extern pthread_cond_t	active_threads_cond;
+
 extern pthread_mutex_t	currenttime_mutex;
 extern pthread_mutex_t	strtok_mutex;
 extern pthread_mutex_t	entry2str_mutex;

servers/slapd/result.c

@@ -116,6 +116,10 @@ send_ldap_result2(
 		pthread_kill( listener_tid, LDAP_SIGUSR1 );
 
 		pthread_cond_wait( &conn->c_wcv, &active_threads_mutex );
+
+		if( active_threads < 1 ) {
+			pthread_cond_signal(&active_threads_cond);
+		}
 		pthread_mutex_unlock( &active_threads_mutex );
 
 		pthread_yield();
@@ -346,6 +350,10 @@ send_search_entry(
 		conn->c_writewaiter = 1;
 		pthread_kill( listener_tid, LDAP_SIGUSR1 );
 		pthread_cond_wait( &conn->c_wcv, &active_threads_mutex );
+
+		if( active_threads < 1 ) {
+			pthread_cond_signal(&active_threads_cond);
+		}
 		pthread_mutex_unlock( &active_threads_mutex );
 
 		pthread_yield();

servers/slapd/tools/ldbmtest.c

@@ -31,31 +31,9 @@ static void		free_and_close(struct dbcache *dbc, Datum key, Datum data);
 static void		edit_entry(char c, Datum *data);
 static void		get_keydata(FILE *fp, char c, Datum *key, Datum *data);
 
-struct dbcache	*dbc;
-LDBM		dbp;
-char		*tailorfile;
-Backend		*be = NULL;
-int		ldap_debug;
-int		ldap_syslog;
-int		ldap_syslog_level;
-long		num_entries_sent;
-long		num_bytes_sent;
-int		active_threads;
-char		*default_referral;
-time_t		currenttime;
-pthread_t	listener_tid;
-pthread_mutex_t	num_sent_mutex;
-pthread_mutex_t	entry2str_mutex;
-pthread_mutex_t	active_threads_mutex;
-pthread_mutex_t	new_conn_mutex;
-pthread_mutex_t	currenttime_mutex;
-pthread_mutex_t	strtok_mutex;
-pthread_mutex_t	replog_mutex;
-pthread_mutex_t	ops_mutex;
-pthread_mutex_t	regex_mutex;
-#ifdef SLAPD_CRYPT
-pthread_mutex_t	crypt_mutex;
-#endif
+static struct dbcache *dbc;
+static LDBM           dbp;
+static Backend		*be = NULL;
 
 int
 main( int argc, char **argv )
@@ -67,6 +45,7 @@ main( int argc, char **argv )
 	IDList		*idl;
 	Backend		*tbe;
 	int		i;
+	char 		*tailorfile;
 
 #ifdef HAVE_BERKELEY_DB2
 	DBC	*cursorp;

servers/slapd/tools/ldif.c

@@ -11,10 +11,6 @@
 #include "ldap.h"
 #include "ldif.h"
 
-int	ldap_syslog;
-int	ldap_syslog_level;
-
-
 static void
 usage( char *name )
 {

servers/slapd/tools/ldif2id2children.c

@@ -16,29 +16,6 @@
 
 #define MAXARGS      		100
 
-int		lineno;
-int		ldap_debug;
-int		ldap_syslog;
-int		ldap_syslog_level;
-long		num_entries_sent;
-long		num_bytes_sent;
-int		active_threads;
-char		*default_referral;
-time_t		currenttime;
-pthread_t	listener_tid;
-pthread_mutex_t	num_sent_mutex;
-pthread_mutex_t	entry2str_mutex;
-pthread_mutex_t	active_threads_mutex;
-pthread_mutex_t	new_conn_mutex;
-pthread_mutex_t	currenttime_mutex;
-pthread_mutex_t	strtok_mutex;
-pthread_mutex_t	replog_mutex;
-pthread_mutex_t	ops_mutex;
-pthread_mutex_t	regex_mutex;
-#ifdef SLAPD_CRYPT
-pthread_mutex_t	crypt_mutex;
-#endif
-
 static char	*tailorfile;
 static char	*inputfile;
  

servers/slapd/tools/ldif2id2entry.c

@@ -14,28 +14,6 @@
 
 #define MAXARGS      		100
 
-int		ldap_debug;
-int		ldap_syslog;
-int		ldap_syslog_level;
-long		num_entries_sent;
-long		num_bytes_sent;
-int		active_threads;
-char		*default_referral;
-time_t		currenttime;
-pthread_t	listener_tid;
-pthread_mutex_t	num_sent_mutex;
-pthread_mutex_t	entry2str_mutex;
-pthread_mutex_t	active_threads_mutex;
-pthread_mutex_t	new_conn_mutex;
-pthread_mutex_t	currenttime_mutex;
-pthread_mutex_t	strtok_mutex;
-pthread_mutex_t	replog_mutex;
-pthread_mutex_t	ops_mutex;
-pthread_mutex_t	regex_mutex;
-#ifdef SLAPD_CRYPT
-pthread_mutex_t	crypt_mutex;
-#endif
-
 static char	*tailorfile;
 static char	*inputfile;
  

servers/slapd/tools/ldif2index.c

@@ -16,29 +16,6 @@
 
 #define MAXARGS      		100
 
-int		ldap_debug;
-int		ldap_syslog;
-int		ldap_syslog_level;
-long		num_entries_sent;
-long		num_bytes_sent;
-int		active_threads;
-char		*default_referral;
-time_t		currenttime;
-pthread_t	listener_tid;
-pthread_mutex_t	num_sent_mutex;
-pthread_mutex_t	entry2str_mutex;
-pthread_mutex_t	active_threads_mutex;
-pthread_mutex_t	new_conn_mutex;
-pthread_mutex_t	currenttime_mutex;
-pthread_mutex_t	strtok_mutex;
-pthread_mutex_t	replog_mutex;
-pthread_mutex_t	ops_mutex;
-pthread_mutex_t	regex_mutex;
-#ifdef SLAPD_CRYPT
-pthread_mutex_t	crypt_mutex;
-#endif
-
-
 static void
 usage( char *name )
 {

servers/slapd/tools/ldif2ldbm.c

@@ -20,28 +20,6 @@
 #define ID2CHILDRENCMD		"ldif2id2children"
 #define MAXARGS      		100
 
-int		ldap_debug;
-int		ldap_syslog;
-int		ldap_syslog_level;
-long		num_entries_sent;
-long		num_bytes_sent;
-int		active_threads;
-char		*default_referral;
-time_t		currenttime;
-pthread_t	listener_tid;
-pthread_mutex_t	num_sent_mutex;
-pthread_mutex_t	entry2str_mutex;
-pthread_mutex_t	active_threads_mutex;
-pthread_mutex_t	new_conn_mutex;
-pthread_mutex_t	currenttime_mutex;
-pthread_mutex_t	strtok_mutex;
-pthread_mutex_t	replog_mutex;
-pthread_mutex_t	ops_mutex;
-pthread_mutex_t	regex_mutex;
-#ifdef SLAPD_CRYPT
-pthread_mutex_t	crypt_mutex;
-#endif
-
 static void fork_child( char *prog, char *args[] );
 static void	wait4kids( int nkidval );