backport fixes

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@29787 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,11 @@
+2010-02-27 Richard Frith-Macdonald <rfm@gnu.org>
+
+	* runtime.c:
+	* sync.m:
+	* runtime.h:
+	Backport David's fixes for @synchronize(class), suitably modified to
+	build with older compilers.
+
 2010-02-27 Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/NSObject.m: ([methodSignatureForSelector:]) remote the check

Source/ObjectiveC2/runtime.c

@@ -100,8 +100,7 @@ class_getInstanceMethodNonrecursive(Class aClass, SEL aSelector)
 
 	  if (strcmp(sel_get_name(method->method_name), name) == 0)
 	    {
-	      if (NULL == types
-		|| strcmp(types, method->method_types) == 0)
+	      if (NULL == types || strcmp(types, method->method_types) == 0)
 		{
 		  return method;
 		}
@@ -135,9 +134,7 @@ objc_updateDtableForClassContainingMethod(Method m)
 BOOL
 class_addIvar(Class cls,
 	      const char *name,
-  size_t size,
-  uint8_t alignment,
-  const char *types)
+	      size_t size, uint8_t alignment, const char *types)
 {
   struct objc_ivar_list *ivarlist;
   Ivar ivar;
@@ -164,7 +161,8 @@ class_addIvar(Class cls,
       ivarlist->ivar_count++;
       // objc_ivar_list contains one ivar.  Others follow it.
       cls->ivars = objc_realloc(ivarlist, sizeof(struct objc_ivar_list)
-	+ (ivarlist->ivar_count - 1) * sizeof(struct objc_ivar));
+				+ (ivarlist->ivar_count -
+				   1) * sizeof(struct objc_ivar));
     }
 
   ivar = &cls->ivars->ivar_list[cls->ivars->ivar_count - 1];
@@ -183,7 +181,8 @@ class_addMethod(Class cls, SEL name, IMP imp, const char *types)
   const char *methodName = sel_get_name(name);
   struct objc_method_list *methods;
 
-  for (methods = cls->methods; methods != NULL; methods = methods->method_next)
+  for (methods = cls->methods; methods != NULL;
+       methods = methods->method_next)
     {
       int i;
 
@@ -298,7 +297,8 @@ class_copyMethodList(Class cls, unsigned int *outCount)
   Method *copyDest;
   struct objc_method_list *methods;
 
-  for (methods = cls->methods; methods != NULL; methods = methods->method_next)
+  for (methods = cls->methods; methods != NULL;
+       methods = methods->method_next)
     {
       count += methods->method_count;
     }
@@ -314,7 +314,8 @@ class_copyMethodList(Class cls, unsigned int *outCount)
   list = malloc(count * sizeof(struct objc_method *));
   copyDest = list;
 
-  for (methods = cls->methods; methods != NULL; methods = methods->method_next)
+  for (methods = cls->methods; methods != NULL;
+       methods = methods->method_next)
     {
       unsigned int i;
 
@@ -520,8 +521,7 @@ class_setIvarLayout(Class cls, const char *layout)
   memcpy(cls->ivars, list, listsize);
 }
 
-OBJC_DEPRECATED
-Class
+OBJC_DEPRECATED Class
 class_setSuperclass(Class cls, Class newSuper)
 {
   Class oldSuper = cls->super_class;
@@ -632,9 +632,7 @@ method_exchangeImplementations(Method m1, Method m2)
 
 void
 method_getArgumentType(Method method,
-  unsigned int index,
-  char *dst,
-  size_t dst_len)
+		       unsigned int index, char *dst, size_t dst_len)
 {
   const char *types;
   size_t length;
@@ -910,6 +908,22 @@ objc_allocateClassPair(Class superclass, const char *name, size_t extraBytes)
   return newClass;
 }
 
+Class
+objc_allocateMetaClass(Class superclass, size_t extraBytes)
+{
+  Class metaClass = calloc(1, sizeof(struct objc_class) + extraBytes);
+
+  // Initialize the metaclass
+  metaClass->class_pointer = superclass->class_pointer->class_pointer;
+  metaClass->super_class = superclass->class_pointer;
+  metaClass->name = strdup(superclass->name);
+  metaClass->info = _CLS_META;
+  metaClass->dtable = __objc_uninstalled_dtable;
+  metaClass->instance_size = sizeof(struct objc_class);
+
+  return metaClass;
+}
+
 void *
 object_getIndexedIvars(id obj)
 {
@@ -997,7 +1011,8 @@ protocol_conformsToProtocol(Protocol *p, Protocol *other)
 
 struct objc_method_description *
 protocol_copyMethodDescriptionList(Protocol * p,
-  BOOL isRequiredMethod, BOOL isInstanceMethod, unsigned int *count)
+				   BOOL isRequiredMethod,
+				   BOOL isInstanceMethod, unsigned int *count)
 {
   *count = 0;
   return NULL;
@@ -1027,8 +1042,7 @@ protocol_isEqual(Protocol *p, Protocol *other)
     {
       return NO;
     }
-  if (p == other
-    || 0 == strcmp(p->protocol_name, other->protocol_name))
+  if (p == other || 0 == strcmp(p->protocol_name, other->protocol_name))
     {
       return YES;
     }
@@ -1038,14 +1052,16 @@ protocol_isEqual(Protocol *p, Protocol *other)
 const char *
 sel_getName(SEL sel)
 {
-  if (sel == 0) return "<null selector>";
+  if (sel == 0)
+    return "<null selector>";
   return sel_get_name(sel);
 }
 
 SEL
 sel_getUid(const char *selName)
 {
-  if (selName == 0) return 0;
+  if (selName == 0)
+    return 0;
   return sel_get_uid(selName);
 }
 
@@ -1058,7 +1074,7 @@ sel_isEqual(SEL sel1, SEL sel2)
 SEL
 sel_registerName(const char *selName)
 {
-  if (selName == 0) return 0;
+  if (selName == 0)
+    return 0;
   return sel_register_name(selName);
 }
-

Source/ObjectiveC2/runtime.h

@@ -1,6 +1,7 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <sys/types.h>
+#include "Availability.h"
 
 #if   defined(ERROR_UNSUPPORTED_RUNTIME_FUNCTIONS)
 #  define OBJC_GNU_RUNTIME_UNSUPPORTED(x) \
@@ -199,7 +200,11 @@ const char * method_getTypeEncoding(Method method);
 
 IMP method_setImplementation(Method method, IMP imp);
 
-Class objc_allocateClassPair(Class superclass, const char *name, size_t extraBytes);
+Class
+objc_allocateClassPair(Class superclass, const char *name, size_t extraBytes);
+
+OBJC_NONPORTABLE
+Class objc_allocateMetaClass(Class superclass, size_t extraBytes);
 
 void objc_disposeClassPair(Class cls);
 

Source/ObjectiveC2/sync.m

@@ -53,19 +53,32 @@ findLockClass(id obj)
 static inline Class
 initLockObject(id obj)
 {
-  char nameBuffer[40];
   Class lockClass;
   const char *types;
   pthread_mutex_t *lock;
   pthread_mutexattr_t attr;
 
+  if (class_isMetaClass(obj->isa))
+    {
+      lockClass = objc_allocateMetaClass(obj, sizeof(pthread_mutex_t));
+    }
+  else
+    {
+      char nameBuffer[40];
+
       snprintf(nameBuffer, 39, "hiddenlockClass%lld", lockClassId++);
       lockClass = objc_allocateClassPair(obj->isa, nameBuffer,
 	sizeof(pthread_mutex_t));
+    }
+
   types = method_getTypeEncoding(class_getInstanceMethod(obj->isa,
     @selector(dealloc)));
   class_addMethod(lockClass, @selector(dealloc), (IMP)deallocLockClass, types);
+
+  if (!class_isMetaClass(obj->isa))
+    {
       objc_registerClassPair(lockClass);
+    }
 
   lock = object_getIndexedIvars(lockClass);
   pthread_mutexattr_init(&attr);