Set some ivars (delegates which should not be retained) to be gc invisible.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@27591 72102866-910b-0410-8b05-ffd578937521

Source/GSStream.m

@@ -143,6 +143,11 @@ static RunLoopEventType typeForStream(NSStream *aStream)
 
 @implementation GSStream
 
++ (void) initialize
+{
+  class_ivar_set_gcinvisible (self, "delegate", YES);
+}
+
 - (void) close
 {
   if (_currentStatus == NSStreamStatusNotOpen)
@@ -626,6 +631,7 @@ static RunLoopEventType typeForStream(NSStream *aStream)
   if (self == [GSInputStream class])
     {
       GSObjCAddClassBehavior(self, [GSStream class]);
+      class_ivar_set_gcinvisible (self, "delegate", YES);
     }
 }
 
@@ -658,6 +664,7 @@ static RunLoopEventType typeForStream(NSStream *aStream)
   if (self == [GSOutputStream class])
     {
       GSObjCAddClassBehavior(self, [GSStream class]);
+      class_ivar_set_gcinvisible (self, "delegate", YES);
     }
 }
 
@@ -929,6 +936,11 @@ static RunLoopEventType typeForStream(NSStream *aStream)
 
 @implementation GSServerStream
 
++ (void) initialize
+{
+  class_ivar_set_gcinvisible (self, "delegate", YES);
+}
+
 + (id) serverStreamToAddr: (NSString*)addr port: (int)port
 {
   GSServerStream *s;

Source/NSConnection.m

@@ -545,6 +545,7 @@ static NSLock	*cached_proxies_gate = nil;
     {
       NSNotificationCenter	*nc;
 
+      class_ivar_set_gcinvisible (self, "delegate", YES);
       connectionClass = self;
       dateClass = [NSDate class];
       distantObjectClass = [NSDistantObject class];

Source/NSKeyedArchiver.m

@@ -464,6 +464,8 @@ static NSDictionary *makeReference(unsigned ref)
 
 + (void) initialize
 {
+  class_ivar_set_gcinvisible (self, "delegate", YES);
+
   if (globalClassMap == 0)
     {
       globalClassMap =

Source/NSKeyedUnarchiver.m

@@ -274,6 +274,8 @@ static NSMapTable	globalClassMap = 0;
 
 + (void) initialize
 {
+  class_ivar_set_gcinvisible (self, "delegate", YES);
+
   if (globalClassMap == 0)
     {
       globalClassMap =

Source/NSPort.m

@@ -81,6 +81,8 @@ static Class	NSPort_concrete_class;
     {
       NSUserDefaults	*defs;
 
+      class_ivar_set_gcinvisible (self, "delegate", YES);
+
       NSPort_abstract_class = self;
       NSPort_concrete_class = [NSMessagePort class];
 

Source/NSXMLParser.m

@@ -66,6 +66,12 @@ static  NSNull  *null = nil;
 
 @implementation	NSXMLSAXHandler
 
++ (void) initialize
+{
+  class_ivar_set_gcinvisible (self, "_delegate", YES);
+  class_ivar_set_gcinvisible (self, "_owner", YES);
+}
+
 - (void) dealloc
 {
   DESTROY(_namespaces);

configure

@@ -3673,8 +3673,8 @@ cat >>confdefs.h <<\_ACEOF
 _ACEOF
 
   else
-    { echo "$as_me:$LINENO: It looks like your libgc is quite old ... please use a newer one to support making the garbage collector aware of new threads." >&5
+    { echo "$as_me:$LINENO: It looks like your libgc is quite old ... please consider using a newer one to support making the garbage collector aware of new threads.  You can get libgc source from http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc-source/ but NB. the libgc used must be compatible with the version of the objective-c runtime library that you are using." >&5
-echo "$as_me: It looks like your libgc is quite old ... please use a newer one to support making the garbage collector aware of new threads." >&6;}
+echo "$as_me: It looks like your libgc is quite old ... please consider using a newer one to support making the garbage collector aware of new threads.  You can get libgc source from http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc-source/ but NB. the libgc used must be compatible with the version of the objective-c runtime library that you are using." >&6;}
   fi
   LIBS="-lobjc_gc -ldl"
   echo "$as_me:$LINENO: checking for class_ivar_set_gcinvisible" >&5

configure.ac

@@ -277,7 +277,7 @@ if test $OBJC_WITH_GC = yes; then
     AC_DEFINE(HAVE_GC_REGISTER_MY_THREAD,1,
       [Define if GC_register_my_thread function is available])
   else
-    AC_MSG_NOTICE([It looks like your libgc is quite old ... please use a newer one to support making the garbage collector aware of new threads.])
+    AC_MSG_NOTICE([It looks like your libgc is quite old ... please consider using a newer one to support making the garbage collector aware of new threads.  You can get libgc source from http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc-source/ but NB. the libgc used must be compatible with the version of the objective-c runtime library that you are using.])
   fi
   LIBS="-lobjc_gc -ldl"
   AC_CHECK_FUNC(class_ivar_set_gcinvisible, gc_ok=yes, gc_ok=no)