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@ -1,5 +1,5 @@
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/* GNU Objective C Runtime initialization
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Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
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Copyright (C) 1993, 1995, 1996, 1997, 2002 Free Software Foundation, Inc.
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Contributed by Kresten Krab Thorup
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+load support contributed by Ovidiu Predescu <ovidiu@net-community.com>
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@ -27,62 +27,62 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "runtime.h"
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/* The version number of this runtime. This must match the number
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defined in gcc (objc-act.c) */
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defined in gcc (objc-act.c). */
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#define OBJC_VERSION 8
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#define PROTOCOL_VERSION 2
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/* This list contains all modules currently loaded into the runtime */
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static struct objc_list* __objc_module_list = 0; /* !T:MUTEX */
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/* This list contains all modules currently loaded into the runtime. */
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static struct objc_list *__objc_module_list = 0; /* !T:MUTEX */
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/* This list contains all proto_list's not yet assigned class links */
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static struct objc_list* unclaimed_proto_list = 0; /* !T:MUTEX */
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/* This list contains all proto_list's not yet assigned class links. */
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static struct objc_list *unclaimed_proto_list = 0; /* !T:MUTEX */
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/* List of unresolved static instances. */
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static struct objc_list *uninitialized_statics = 0; /* !T:MUTEX */
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/* Global runtime "write" mutex. */
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/* Global runtime "write" mutex. */
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objc_mutex_t __objc_runtime_mutex = 0;
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/* Number of threads that are alive. */
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/* Number of threads that are alive. */
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int __objc_runtime_threads_alive = 1; /* !T:MUTEX */
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/* Check compiler vs runtime version */
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/* Check compiler vs runtime version. */
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static void init_check_module_version (Module_t);
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/* Assign isa links to protos */
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static void __objc_init_protocols (struct objc_protocol_list* protos);
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/* Assign isa links to protos. */
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static void __objc_init_protocols (struct objc_protocol_list *protos);
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/* Add protocol to class */
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static void __objc_class_add_protocols (Class, struct objc_protocol_list*);
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/* Add protocol to class. */
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static void __objc_class_add_protocols (Class, struct objc_protocol_list *);
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/* This is a hook which is called by __objc_exec_class every time a class
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or a category is loaded into the runtime. This may e.g. help a
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dynamic loader determine the classes that have been loaded when
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an object file is dynamically linked in */
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void (*_objc_load_callback)(Class class, Category* category); /* !T:SAFE */
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/* This is a hook which is called by __objc_exec_class every time a
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class or a category is loaded into the runtime. This may e.g. help
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a dynamic loader determine the classes that have been loaded when
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an object file is dynamically linked in. */
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void (*_objc_load_callback) (Class class, Category *category); /* !T:SAFE */
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/* Is all categories/classes resolved? */
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/* Is all categories/classes resolved? */
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BOOL __objc_dangling_categories = NO; /* !T:UNUSED */
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extern SEL
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__sel_register_typed_name (const char *name, const char *types,
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struct objc_selector *orig, BOOL is_const);
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/* Sends +load to all classes and categories in certain situations. */
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/* Sends +load to all classes and categories in certain situations. */
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static void objc_send_load (void);
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/* Inserts all the classes defined in module in a tree of classes that
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resembles the class hierarchy. This tree is traversed in preorder and the
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classes in its nodes receive the +load message if these methods were not
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executed before. The algorithm ensures that when the +load method of a class
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is executed all the superclasses have been already received the +load
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message. */
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resembles the class hierarchy. This tree is traversed in preorder
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and the classes in its nodes receive the +load message if these
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methods were not executed before. The algorithm ensures that when
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the +load method of a class is executed all the superclasses have
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been already received the +load message. */
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static void __objc_create_classes_tree (Module_t module);
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static void __objc_call_callback (Module_t module);
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/* A special version that works only before the classes are completely
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installed in the runtime. */
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installed in the runtime. */
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static BOOL class_is_subclass_of_class (Class class, Class superclass);
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typedef struct objc_class_tree {
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@ -90,24 +90,26 @@ typedef struct objc_class_tree {
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struct objc_list *subclasses; /* `head' is pointer to an objc_class_tree */
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} objc_class_tree;
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/* This is a linked list of objc_class_tree trees. The head of these trees
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are root classes (their super class is Nil). These different trees
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represent different class hierarchies. */
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/* This is a linked list of objc_class_tree trees. The head of these
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trees are root classes (their super class is Nil). These different
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trees represent different class hierarchies. */
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static struct objc_list *__objc_class_tree_list = NULL;
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/* Keeps the +load methods who have been already executed. This hash should
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not be destroyed during the execution of the program. */
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/* Keeps the +load methods who have been already executed. This hash
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should not be destroyed during the execution of the program. */
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static cache_ptr __objc_load_methods = NULL;
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/* Creates a tree of classes whose topmost class is directly inherited from
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`upper' and the bottom class in this tree is `bottom_class'. The classes
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in this tree are super classes of `bottom_class'. `subclasses' member
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of each tree node point to the next subclass tree node. */
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/* Creates a tree of classes whose topmost class is directly inherited
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from `upper' and the bottom class in this tree is
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`bottom_class'. The classes in this tree are super classes of
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`bottom_class'. `subclasses' member of each tree node point to the
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next subclass tree node. */
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static objc_class_tree *
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create_tree_of_subclasses_inherited_from (Class bottom_class, Class upper)
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{
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Class superclass = bottom_class->super_class ?
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objc_lookup_class ((char*)bottom_class->super_class)
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objc_lookup_class ((char *) bottom_class->super_class)
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: Nil;
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objc_class_tree *tree, *prev;
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@ -126,7 +128,7 @@ create_tree_of_subclasses_inherited_from (Class bottom_class, Class upper)
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tree->class = superclass;
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tree->subclasses = list_cons (prev, tree->subclasses);
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superclass = (superclass->super_class ?
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objc_lookup_class ((char*)superclass->super_class)
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objc_lookup_class ((char *) superclass->super_class)
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: Nil);
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prev = tree;
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}
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@ -134,11 +136,13 @@ create_tree_of_subclasses_inherited_from (Class bottom_class, Class upper)
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return tree;
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}
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/* Insert the `class' into the proper place in the `tree' class hierarchy. This
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function returns a new tree if the class has been successfully inserted into
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the tree or NULL if the class is not part of the classes hierarchy described
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by `tree'. This function is private to objc_tree_insert_class(), you should
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not call it directly. */
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/* Insert the `class' into the proper place in the `tree' class
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hierarchy. This function returns a new tree if the class has been
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successfully inserted into the tree or NULL if the class is not
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part of the classes hierarchy described by `tree'. This function is
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private to objc_tree_insert_class (), you should not call it
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directly. */
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static objc_class_tree *
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__objc_tree_insert_class (objc_class_tree *tree, Class class)
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{
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@ -154,21 +158,21 @@ __objc_tree_insert_class (objc_class_tree *tree, Class class)
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return tree;
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}
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else if ((class->super_class ?
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objc_lookup_class ((char*)class->super_class)
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objc_lookup_class ((char *) class->super_class)
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: Nil)
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== tree->class)
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{
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/* If class is a direct subclass of tree->class then add class to the
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list of subclasses. First check to see if it wasn't already
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inserted. */
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inserted. */
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struct objc_list *list = tree->subclasses;
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objc_class_tree *node;
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while (list)
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{
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/* Class has been already inserted; do nothing just return
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the tree. */
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if (((objc_class_tree*)list->head)->class == class)
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the tree. */
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if (((objc_class_tree *) list->head)->class == class)
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{
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DEBUG_PRINTF ("2. class %s was previously inserted\n",
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class->name);
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@ -186,24 +190,25 @@ __objc_tree_insert_class (objc_class_tree *tree, Class class)
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}
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else
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{
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/* The class is not a direct subclass of tree->class. Search for class's
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superclasses in the list of subclasses. */
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/* The class is not a direct subclass of tree->class. Search for
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class's superclasses in the list of subclasses. */
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struct objc_list *subclasses = tree->subclasses;
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/* Precondition: the class must be a subclass of tree->class; otherwise
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return NULL to indicate our caller that it must take the next tree. */
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if (!class_is_subclass_of_class (class, tree->class))
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/* Precondition: the class must be a subclass of tree->class;
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otherwise return NULL to indicate our caller that it must
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take the next tree. */
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if (! class_is_subclass_of_class (class, tree->class))
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return NULL;
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for (; subclasses != NULL; subclasses = subclasses->tail)
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{
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Class aClass = ((objc_class_tree*)(subclasses->head))->class;
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Class aClass = ((objc_class_tree *) (subclasses->head))->class;
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if (class_is_subclass_of_class (class, aClass))
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{
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/* If we found one of class's superclasses we insert the class
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into its subtree and return the original tree since nothing
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has been changed. */
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/* If we found one of class's superclasses we insert the
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class into its subtree and return the original tree
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since nothing has been changed. */
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subclasses->head
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= __objc_tree_insert_class (subclasses->head, class);
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DEBUG_PRINTF ("4. class %s inserted\n", class->name);
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@ -211,12 +216,12 @@ __objc_tree_insert_class (objc_class_tree *tree, Class class)
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}
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}
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/* We haven't found a subclass of `class' in the `subclasses' list.
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Create a new tree of classes whose topmost class is a direct subclass
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of tree->class. */
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/* We haven't found a subclass of `class' in the `subclasses'
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list. Create a new tree of classes whose topmost class is a
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direct subclass of tree->class. */
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{
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objc_class_tree *new_tree
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= create_tree_of_subclasses_inherited_from (class, tree->class);
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= create_tree_of_subclasses_inherited_from (class, tree->class);
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tree->subclasses = list_cons (new_tree, tree->subclasses);
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DEBUG_PRINTF ("5. class %s inserted\n", class->name);
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return tree;
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@ -224,7 +229,8 @@ __objc_tree_insert_class (objc_class_tree *tree, Class class)
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}
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}
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/* This function inserts `class' in the right tree hierarchy classes. */
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/* This function inserts `class' in the right tree hierarchy classes. */
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static void
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objc_tree_insert_class (Class class)
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{
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@ -244,20 +250,21 @@ objc_tree_insert_class (Class class)
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list_node = list_node->tail;
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}
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/* If the list was finished but the class hasn't been inserted, insert it
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here. */
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if (!list_node)
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/* If the list was finished but the class hasn't been inserted,
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insert it here. */
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if (! list_node)
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{
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__objc_class_tree_list = list_cons (NULL, __objc_class_tree_list);
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__objc_class_tree_list->head = __objc_tree_insert_class (NULL, class);
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}
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}
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/* Traverse tree in preorder. Used to send +load. */
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/* Traverse tree in preorder. Used to send +load. */
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static void
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objc_preorder_traverse (objc_class_tree *tree,
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int level,
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void (*function)(objc_class_tree*, int))
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void (*function) (objc_class_tree *, int))
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{
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struct objc_list *node;
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@ -266,11 +273,12 @@ objc_preorder_traverse (objc_class_tree *tree,
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objc_preorder_traverse (node->head, level + 1, function);
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}
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/* Traverse tree in postorder. Used to destroy a tree. */
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/* Traverse tree in postorder. Used to destroy a tree. */
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static void
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objc_postorder_traverse (objc_class_tree *tree,
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int level,
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void (*function)(objc_class_tree*, int))
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int level,
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void (*function) (objc_class_tree *, int))
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{
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struct objc_list *node;
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@ -279,7 +287,8 @@ objc_postorder_traverse (objc_class_tree *tree,
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(*function) (tree, level);
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}
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/* Used to print a tree class hierarchy. */
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/* Used to print a tree class hierarchy. */
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#ifdef DEBUG_RUNTIME
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static void
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|
|
|
__objc_tree_print (objc_class_tree *tree, int level)
|
|
|
|
|
@ -292,63 +301,68 @@ __objc_tree_print (objc_class_tree *tree, int level)
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Walks on a linked list of methods in the reverse order and executes all
|
|
|
|
|
the methods corresponding to `op' selector. Walking in the reverse order
|
|
|
|
|
assures the +load of class is executed first and then +load of categories
|
|
|
|
|
because of the way in which categories are added to the class methods. */
|
|
|
|
|
/* Walks on a linked list of methods in the reverse order and executes
|
|
|
|
|
all the methods corresponding to `op' selector. Walking in the
|
|
|
|
|
reverse order assures the +load of class is executed first and then
|
|
|
|
|
+load of categories because of the way in which categories are
|
|
|
|
|
added to the class methods. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
__objc_send_message_in_list (MethodList_t method_list, Class class, SEL op)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
if (!method_list)
|
|
|
|
|
if (! method_list)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
/* First execute the `op' message in the following method lists */
|
|
|
|
|
__objc_send_message_in_list (method_list->method_next, class, op);
|
|
|
|
|
|
|
|
|
|
/* Search the method list. */
|
|
|
|
|
/* Search the method list. */
|
|
|
|
|
for (i = 0; i < method_list->method_count; i++)
|
|
|
|
|
{
|
|
|
|
|
Method_t mth = &method_list->method_list[i];
|
|
|
|
|
|
|
|
|
|
if (mth->method_name && sel_eq (mth->method_name, op)
|
|
|
|
|
&& !hash_is_key_in_hash (__objc_load_methods, mth->method_imp))
|
|
|
|
|
&& ! hash_is_key_in_hash (__objc_load_methods, mth->method_imp))
|
|
|
|
|
{
|
|
|
|
|
/* The method was found and wasn't previously executed. */
|
|
|
|
|
(*mth->method_imp) ((id)class, mth->method_name);
|
|
|
|
|
|
|
|
|
|
/* Add this method into the +load hash table */
|
|
|
|
|
hash_add (&__objc_load_methods, mth->method_imp, mth->method_imp);
|
|
|
|
|
|
|
|
|
|
DEBUG_PRINTF ("sending +load in class: %s\n", class->name);
|
|
|
|
|
|
|
|
|
|
/* The method was found and wasn't previously executed. */
|
|
|
|
|
(*mth->method_imp) ((id)class, mth->method_name);
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
__objc_send_load (objc_class_tree *tree, int level)
|
|
|
|
|
__objc_send_load (objc_class_tree *tree,
|
|
|
|
|
int level __attribute__ ((__unused__)))
|
|
|
|
|
{
|
|
|
|
|
static SEL load_sel = 0;
|
|
|
|
|
Class class = tree->class;
|
|
|
|
|
MethodList_t method_list = class->class_pointer->methods;
|
|
|
|
|
|
|
|
|
|
if (!load_sel)
|
|
|
|
|
if (! load_sel)
|
|
|
|
|
load_sel = sel_register_name ("load");
|
|
|
|
|
|
|
|
|
|
__objc_send_message_in_list (method_list, class, load_sel);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
__objc_destroy_class_tree_node (objc_class_tree *tree, int level)
|
|
|
|
|
__objc_destroy_class_tree_node (objc_class_tree *tree,
|
|
|
|
|
int level __attribute__ ((__unused__)))
|
|
|
|
|
{
|
|
|
|
|
objc_free (tree);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* This is used to check if the relationship between two classes before the
|
|
|
|
|
runtime completely installs the classes. */
|
|
|
|
|
/* This is used to check if the relationship between two classes
|
|
|
|
|
before the runtime completely installs the classes. */
|
|
|
|
|
|
|
|
|
|
static BOOL
|
|
|
|
|
class_is_subclass_of_class (Class class, Class superclass)
|
|
|
|
|
{
|
|
|
|
|
@ -357,19 +371,19 @@ class_is_subclass_of_class (Class class, Class superclass)
|
|
|
|
|
if (class == superclass)
|
|
|
|
|
return YES;
|
|
|
|
|
class = (class->super_class ?
|
|
|
|
|
objc_lookup_class ((char*)class->super_class)
|
|
|
|
|
objc_lookup_class ((char *) class->super_class)
|
|
|
|
|
: Nil);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return NO;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* This list contains all the classes in the runtime system for whom their
|
|
|
|
|
superclasses are not yet know to the runtime. */
|
|
|
|
|
static struct objc_list* unresolved_classes = 0;
|
|
|
|
|
/* This list contains all the classes in the runtime system for whom
|
|
|
|
|
their superclasses are not yet known to the runtime. */
|
|
|
|
|
static struct objc_list *unresolved_classes = 0;
|
|
|
|
|
|
|
|
|
|
/* Extern function used to reference the Object and NXConstantString classes.
|
|
|
|
|
*/
|
|
|
|
|
/* Extern function used to reference the Object and NXConstantString
|
|
|
|
|
classes. */
|
|
|
|
|
|
|
|
|
|
extern void __objc_force_linking (void);
|
|
|
|
|
|
|
|
|
|
@ -380,15 +394,16 @@ __objc_force_linking (void)
|
|
|
|
|
__objc_linking ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Run through the statics list, removing modules as soon as all its statics
|
|
|
|
|
have been initialized. */
|
|
|
|
|
/* Run through the statics list, removing modules as soon as all its
|
|
|
|
|
statics have been initialized. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
objc_init_statics (void)
|
|
|
|
|
{
|
|
|
|
|
struct objc_list **cell = &uninitialized_statics;
|
|
|
|
|
struct objc_static_instances **statics_in_module;
|
|
|
|
|
|
|
|
|
|
objc_mutex_lock(__objc_runtime_mutex);
|
|
|
|
|
objc_mutex_lock (__objc_runtime_mutex);
|
|
|
|
|
|
|
|
|
|
while (*cell)
|
|
|
|
|
{
|
|
|
|
|
@ -400,7 +415,7 @@ objc_init_statics (void)
|
|
|
|
|
struct objc_static_instances *statics = *statics_in_module;
|
|
|
|
|
Class class = objc_lookup_class (statics->class_name);
|
|
|
|
|
|
|
|
|
|
if (!class)
|
|
|
|
|
if (! class)
|
|
|
|
|
module_initialized = 0;
|
|
|
|
|
/* Actually, the static's class_pointer will be NULL when we
|
|
|
|
|
haven't been here before. However, the comparison is to be
|
|
|
|
|
@ -430,19 +445,19 @@ objc_init_statics (void)
|
|
|
|
|
/* Remove this module from the uninitialized list. */
|
|
|
|
|
struct objc_list *this = *cell;
|
|
|
|
|
*cell = this->tail;
|
|
|
|
|
objc_free(this);
|
|
|
|
|
objc_free (this);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
cell = &(*cell)->tail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
objc_mutex_unlock(__objc_runtime_mutex);
|
|
|
|
|
objc_mutex_unlock (__objc_runtime_mutex);
|
|
|
|
|
} /* objc_init_statics */
|
|
|
|
|
|
|
|
|
|
/* This function is called by constructor functions generated for each
|
|
|
|
|
module compiled. (_GLOBAL_$I$...) The purpose of this function is to
|
|
|
|
|
gather the module pointers so that they may be processed by the
|
|
|
|
|
initialization routines as soon as possible */
|
|
|
|
|
module compiled. (_GLOBAL_$I$...) The purpose of this function is
|
|
|
|
|
to gather the module pointers so that they may be processed by the
|
|
|
|
|
initialization routines as soon as possible. */
|
|
|
|
|
|
|
|
|
|
objc_DECLARE void
|
|
|
|
|
__objc_exec_class (Module_t module)
|
|
|
|
|
@ -451,7 +466,7 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
indicate that some global data structures need to be built. */
|
|
|
|
|
static BOOL previous_constructors = 0;
|
|
|
|
|
|
|
|
|
|
static struct objc_list* unclaimed_categories = 0;
|
|
|
|
|
static struct objc_list *unclaimed_categories = 0;
|
|
|
|
|
|
|
|
|
|
/* The symbol table (defined in objc-api.h) generated by gcc */
|
|
|
|
|
Symtab_t symtab = module->symtab;
|
|
|
|
|
@ -461,7 +476,7 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
= symtab->defs[symtab->cls_def_cnt + symtab->cat_def_cnt];
|
|
|
|
|
|
|
|
|
|
/* Entry used to traverse hash lists */
|
|
|
|
|
struct objc_list** cell;
|
|
|
|
|
struct objc_list **cell;
|
|
|
|
|
|
|
|
|
|
/* The table of selector references for this module */
|
|
|
|
|
SEL selectors = symtab->refs;
|
|
|
|
|
@ -472,19 +487,19 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
DEBUG_PRINTF ("received module: %s\n", module->name);
|
|
|
|
|
|
|
|
|
|
/* check gcc version */
|
|
|
|
|
init_check_module_version(module);
|
|
|
|
|
init_check_module_version (module);
|
|
|
|
|
|
|
|
|
|
/* On the first call of this routine, initialize some data structures. */
|
|
|
|
|
if (!previous_constructors)
|
|
|
|
|
if (! previous_constructors)
|
|
|
|
|
{
|
|
|
|
|
/* Initialize thread-safe system */
|
|
|
|
|
__objc_init_thread_system();
|
|
|
|
|
__objc_init_thread_system ();
|
|
|
|
|
__objc_runtime_threads_alive = 1;
|
|
|
|
|
__objc_runtime_mutex = objc_mutex_allocate();
|
|
|
|
|
__objc_runtime_mutex = objc_mutex_allocate ();
|
|
|
|
|
|
|
|
|
|
__objc_init_selector_tables();
|
|
|
|
|
__objc_init_class_tables();
|
|
|
|
|
__objc_init_dispatch_tables();
|
|
|
|
|
__objc_init_selector_tables ();
|
|
|
|
|
__objc_init_class_tables ();
|
|
|
|
|
__objc_init_dispatch_tables ();
|
|
|
|
|
__objc_class_tree_list = list_cons (NULL, __objc_class_tree_list);
|
|
|
|
|
__objc_load_methods
|
|
|
|
|
= hash_new (128, (hash_func_type)hash_ptr, compare_ptrs);
|
|
|
|
|
@ -492,8 +507,8 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Save the module pointer for later processing. (not currently used) */
|
|
|
|
|
objc_mutex_lock(__objc_runtime_mutex);
|
|
|
|
|
__objc_module_list = list_cons(module, __objc_module_list);
|
|
|
|
|
objc_mutex_lock (__objc_runtime_mutex);
|
|
|
|
|
__objc_module_list = list_cons (module, __objc_module_list);
|
|
|
|
|
|
|
|
|
|
/* Replace referenced selectors from names to SEL's. */
|
|
|
|
|
if (selectors)
|
|
|
|
|
@ -501,12 +516,12 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
for (i = 0; selectors[i].sel_id; ++i)
|
|
|
|
|
{
|
|
|
|
|
const char *name, *type;
|
|
|
|
|
name = (char*)selectors[i].sel_id;
|
|
|
|
|
type = (char*)selectors[i].sel_types;
|
|
|
|
|
name = (char *) selectors[i].sel_id;
|
|
|
|
|
type = (char *) selectors[i].sel_types;
|
|
|
|
|
/* Constructors are constant static data so we can safely store
|
|
|
|
|
pointers to them in the runtime structures. is_const == YES */
|
|
|
|
|
__sel_register_typed_name (name, type,
|
|
|
|
|
(struct objc_selector*)&(selectors[i]),
|
|
|
|
|
(struct objc_selector *) &(selectors[i]),
|
|
|
|
|
YES);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
@ -516,15 +531,15 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
for (i = 0; i < symtab->cls_def_cnt; ++i)
|
|
|
|
|
{
|
|
|
|
|
Class class = (Class) symtab->defs[i];
|
|
|
|
|
const char* superclass = (char*)class->super_class;
|
|
|
|
|
const char *superclass = (char *) class->super_class;
|
|
|
|
|
|
|
|
|
|
/* Make sure we have what we think. */
|
|
|
|
|
assert (CLS_ISCLASS(class));
|
|
|
|
|
assert (CLS_ISMETA(class->class_pointer));
|
|
|
|
|
assert (CLS_ISCLASS (class));
|
|
|
|
|
assert (CLS_ISMETA (class->class_pointer));
|
|
|
|
|
DEBUG_PRINTF ("phase 1, processing class: %s\n", class->name);
|
|
|
|
|
|
|
|
|
|
/* Initialize the subclass list to be NULL.
|
|
|
|
|
In some cases it isn't and this crashes the program. */
|
|
|
|
|
In some cases it isn't and this crashes the program. */
|
|
|
|
|
class->subclass_list = NULL;
|
|
|
|
|
|
|
|
|
|
/* Store the class in the class table and assign class numbers. */
|
|
|
|
|
@ -535,19 +550,19 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
__objc_register_selectors_from_class ((Class) class->class_pointer);
|
|
|
|
|
|
|
|
|
|
/* Install the fake dispatch tables */
|
|
|
|
|
__objc_install_premature_dtable(class);
|
|
|
|
|
__objc_install_premature_dtable(class->class_pointer);
|
|
|
|
|
__objc_install_premature_dtable (class);
|
|
|
|
|
__objc_install_premature_dtable (class->class_pointer);
|
|
|
|
|
|
|
|
|
|
/* Register the instance methods as class methods, this is
|
|
|
|
|
only done for root classes. */
|
|
|
|
|
__objc_register_instance_methods_to_class(class);
|
|
|
|
|
only done for root classes. */
|
|
|
|
|
__objc_register_instance_methods_to_class (class);
|
|
|
|
|
|
|
|
|
|
if (class->protocols)
|
|
|
|
|
__objc_init_protocols (class->protocols);
|
|
|
|
|
|
|
|
|
|
/* Check to see if the superclass is known in this point. If it's not
|
|
|
|
|
add the class to the unresolved_classes list. */
|
|
|
|
|
if (superclass && !objc_lookup_class (superclass))
|
|
|
|
|
add the class to the unresolved_classes list. */
|
|
|
|
|
if (superclass && ! objc_lookup_class (superclass))
|
|
|
|
|
unresolved_classes = list_cons (class, unresolved_classes);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@ -581,14 +596,14 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Register the instance methods as class methods, this is
|
|
|
|
|
only done for root classes. */
|
|
|
|
|
__objc_register_instance_methods_to_class(class);
|
|
|
|
|
only done for root classes. */
|
|
|
|
|
__objc_register_instance_methods_to_class (class);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* The object to which the category methods belong can't be found.
|
|
|
|
|
Save the information. */
|
|
|
|
|
unclaimed_categories = list_cons(category, unclaimed_categories);
|
|
|
|
|
unclaimed_categories = list_cons (category, unclaimed_categories);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@ -599,9 +614,7 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
|
|
|
|
|
/* Scan the unclaimed category hash. Attempt to attach any unclaimed
|
|
|
|
|
categories to objects. */
|
|
|
|
|
for (cell = &unclaimed_categories;
|
|
|
|
|
*cell;
|
|
|
|
|
({ if (*cell) cell = &(*cell)->tail; }))
|
|
|
|
|
for (cell = &unclaimed_categories; *cell; )
|
|
|
|
|
{
|
|
|
|
|
Category_t category = (*cell)->head;
|
|
|
|
|
Class class = objc_lookup_class (category->class_name);
|
|
|
|
|
@ -627,37 +640,41 @@ __objc_exec_class (Module_t module)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Register the instance methods as class methods, this is
|
|
|
|
|
only done for root classes. */
|
|
|
|
|
__objc_register_instance_methods_to_class(class);
|
|
|
|
|
only done for root classes. */
|
|
|
|
|
__objc_register_instance_methods_to_class (class);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
cell = &(*cell)->tail;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (unclaimed_proto_list && objc_lookup_class ("Protocol"))
|
|
|
|
|
{
|
|
|
|
|
list_mapcar (unclaimed_proto_list,(void(*)(void*))__objc_init_protocols);
|
|
|
|
|
list_mapcar (unclaimed_proto_list,
|
|
|
|
|
(void (*) (void *))__objc_init_protocols);
|
|
|
|
|
list_free (unclaimed_proto_list);
|
|
|
|
|
unclaimed_proto_list = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
objc_send_load ();
|
|
|
|
|
|
|
|
|
|
objc_mutex_unlock(__objc_runtime_mutex);
|
|
|
|
|
objc_mutex_unlock (__objc_runtime_mutex);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void objc_send_load (void)
|
|
|
|
|
static void
|
|
|
|
|
objc_send_load (void)
|
|
|
|
|
{
|
|
|
|
|
if (!__objc_module_list)
|
|
|
|
|
if (! __objc_module_list)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
/* Try to find out if all the classes loaded so far also have their
|
|
|
|
|
superclasses known to the runtime. We suppose that the objects that are
|
|
|
|
|
allocated in the +load method are in general of a class declared in the
|
|
|
|
|
same module. */
|
|
|
|
|
superclasses known to the runtime. We suppose that the objects
|
|
|
|
|
that are allocated in the +load method are in general of a class
|
|
|
|
|
declared in the same module. */
|
|
|
|
|
if (unresolved_classes)
|
|
|
|
|
{
|
|
|
|
|
Class class = unresolved_classes->head;
|
|
|
|
|
|
|
|
|
|
while (objc_lookup_class ((char*)class->super_class))
|
|
|
|
|
while (objc_lookup_class ((char *) class->super_class))
|
|
|
|
|
{
|
|
|
|
|
list_remove_head (&unresolved_classes);
|
|
|
|
|
if (unresolved_classes)
|
|
|
|
|
@ -666,10 +683,9 @@ static void objc_send_load (void)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* If we still have classes for whom we don't have yet their super
|
|
|
|
|
* classes known to the runtime we don't send the +load messages.
|
|
|
|
|
*/
|
|
|
|
|
/* If we still have classes for whom we don't have yet their
|
|
|
|
|
super classes known to the runtime we don't send the +load
|
|
|
|
|
messages. */
|
|
|
|
|
if (unresolved_classes)
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
@ -693,10 +709,11 @@ static void objc_send_load (void)
|
|
|
|
|
return;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Iterate over all modules in the __objc_module_list and call on them the
|
|
|
|
|
__objc_create_classes_tree function. This function creates a tree of
|
|
|
|
|
classes that resembles the class hierarchy. */
|
|
|
|
|
list_mapcar (__objc_module_list, (void(*)(void*))__objc_create_classes_tree);
|
|
|
|
|
/* Iterate over all modules in the __objc_module_list and call on
|
|
|
|
|
them the __objc_create_classes_tree function. This function
|
|
|
|
|
creates a tree of classes that resembles the class hierarchy. */
|
|
|
|
|
list_mapcar (__objc_module_list,
|
|
|
|
|
(void (*) (void *)) __objc_create_classes_tree);
|
|
|
|
|
|
|
|
|
|
while (__objc_class_tree_list)
|
|
|
|
|
{
|
|
|
|
|
@ -711,7 +728,7 @@ static void objc_send_load (void)
|
|
|
|
|
list_remove_head (&__objc_class_tree_list);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
list_mapcar (__objc_module_list, (void(*)(void*))__objc_call_callback);
|
|
|
|
|
list_mapcar (__objc_module_list, (void (*) (void *)) __objc_call_callback);
|
|
|
|
|
list_free (__objc_module_list);
|
|
|
|
|
__objc_module_list = NULL;
|
|
|
|
|
}
|
|
|
|
|
@ -724,8 +741,8 @@ __objc_create_classes_tree (Module_t module)
|
|
|
|
|
Symtab_t symtab = module->symtab;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
/* Iterate thru classes defined in this module and insert them in the classes
|
|
|
|
|
tree hierarchy. */
|
|
|
|
|
/* Iterate thru classes defined in this module and insert them in
|
|
|
|
|
the classes tree hierarchy. */
|
|
|
|
|
for (i = 0; i < symtab->cls_def_cnt; i++)
|
|
|
|
|
{
|
|
|
|
|
Class class = (Class) symtab->defs[i];
|
|
|
|
|
@ -737,72 +754,74 @@ __objc_create_classes_tree (Module_t module)
|
|
|
|
|
static void
|
|
|
|
|
__objc_call_callback (Module_t module)
|
|
|
|
|
{
|
|
|
|
|
/* The runtime mutex is locked in this point */
|
|
|
|
|
/* The runtime mutex is locked in this point. */
|
|
|
|
|
|
|
|
|
|
Symtab_t symtab = module->symtab;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
/* Iterate thru classes defined in this module and call the callback for
|
|
|
|
|
each one. */
|
|
|
|
|
/* Iterate thru classes defined in this module and call the callback
|
|
|
|
|
for each one. */
|
|
|
|
|
for (i = 0; i < symtab->cls_def_cnt; i++)
|
|
|
|
|
{
|
|
|
|
|
Class class = (Class) symtab->defs[i];
|
|
|
|
|
|
|
|
|
|
/* Call the _objc_load_callback for this class. */
|
|
|
|
|
/* Call the _objc_load_callback for this class. */
|
|
|
|
|
if (_objc_load_callback)
|
|
|
|
|
_objc_load_callback(class, 0);
|
|
|
|
|
_objc_load_callback (class, 0);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Call the _objc_load_callback for categories. Don't register the instance
|
|
|
|
|
methods as class methods for categories to root classes since they were
|
|
|
|
|
already added in the class. */
|
|
|
|
|
/* Call the _objc_load_callback for categories. Don't register the
|
|
|
|
|
instance methods as class methods for categories to root classes
|
|
|
|
|
since they were already added in the class. */
|
|
|
|
|
for (i = 0; i < symtab->cat_def_cnt; i++)
|
|
|
|
|
{
|
|
|
|
|
Category_t category = symtab->defs[i + symtab->cls_def_cnt];
|
|
|
|
|
Class class = objc_lookup_class (category->class_name);
|
|
|
|
|
|
|
|
|
|
if (_objc_load_callback)
|
|
|
|
|
_objc_load_callback(class, category);
|
|
|
|
|
_objc_load_callback (class, category);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Sanity check the version of gcc used to compile `module'*/
|
|
|
|
|
static void init_check_module_version(Module_t module)
|
|
|
|
|
/* Sanity check the version of gcc used to compile `module'. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
init_check_module_version (Module_t module)
|
|
|
|
|
{
|
|
|
|
|
if ((module->version != OBJC_VERSION) || (module->size != sizeof (Module)))
|
|
|
|
|
{
|
|
|
|
|
int code;
|
|
|
|
|
|
|
|
|
|
if(module->version > OBJC_VERSION)
|
|
|
|
|
if (module->version > OBJC_VERSION)
|
|
|
|
|
code = OBJC_ERR_OBJC_VERSION;
|
|
|
|
|
else if (module->version < OBJC_VERSION)
|
|
|
|
|
code = OBJC_ERR_GCC_VERSION;
|
|
|
|
|
else
|
|
|
|
|
code = OBJC_ERR_MODULE_SIZE;
|
|
|
|
|
|
|
|
|
|
objc_error(nil, code, "Module %s version %d doesn't match runtime %d\n",
|
|
|
|
|
module->name, (int)module->version, OBJC_VERSION);
|
|
|
|
|
objc_error (nil, code, "Module %s version %d doesn't match runtime %d\n",
|
|
|
|
|
module->name, (int)module->version, OBJC_VERSION);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
__objc_init_protocols (struct objc_protocol_list* protos)
|
|
|
|
|
__objc_init_protocols (struct objc_protocol_list *protos)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
size_t i;
|
|
|
|
|
static Class proto_class = 0;
|
|
|
|
|
|
|
|
|
|
if (! protos)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
objc_mutex_lock(__objc_runtime_mutex);
|
|
|
|
|
objc_mutex_lock (__objc_runtime_mutex);
|
|
|
|
|
|
|
|
|
|
if (!proto_class)
|
|
|
|
|
proto_class = objc_lookup_class("Protocol");
|
|
|
|
|
if (! proto_class)
|
|
|
|
|
proto_class = objc_lookup_class ("Protocol");
|
|
|
|
|
|
|
|
|
|
if (!proto_class)
|
|
|
|
|
if (! proto_class)
|
|
|
|
|
{
|
|
|
|
|
unclaimed_proto_list = list_cons (protos, unclaimed_proto_list);
|
|
|
|
|
objc_mutex_unlock(__objc_runtime_mutex);
|
|
|
|
|
objc_mutex_unlock (__objc_runtime_mutex);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@ -810,9 +829,9 @@ __objc_init_protocols (struct objc_protocol_list* protos)
|
|
|
|
|
assert (protos->next == 0); /* only single ones allowed */
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
for(i = 0; i < protos->count; i++)
|
|
|
|
|
for (i = 0; i < protos->count; i++)
|
|
|
|
|
{
|
|
|
|
|
struct objc_protocol* aProto = protos->list[i];
|
|
|
|
|
struct objc_protocol *aProto = protos->list[i];
|
|
|
|
|
if (((size_t)aProto->class_pointer) == PROTOCOL_VERSION)
|
|
|
|
|
{
|
|
|
|
|
/* assign class pointer */
|
|
|
|
|
@ -823,24 +842,25 @@ __objc_init_protocols (struct objc_protocol_list* protos)
|
|
|
|
|
}
|
|
|
|
|
else if (protos->list[i]->class_pointer != proto_class)
|
|
|
|
|
{
|
|
|
|
|
objc_error(nil, OBJC_ERR_PROTOCOL_VERSION,
|
|
|
|
|
objc_error (nil, OBJC_ERR_PROTOCOL_VERSION,
|
|
|
|
|
"Version %d doesn't match runtime protocol version %d\n",
|
|
|
|
|
(int)((char*)protos->list[i]->class_pointer-(char*)0),
|
|
|
|
|
(int) ((char *) protos->list[i]->class_pointer
|
|
|
|
|
- (char *) 0),
|
|
|
|
|
PROTOCOL_VERSION);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
objc_mutex_unlock(__objc_runtime_mutex);
|
|
|
|
|
objc_mutex_unlock (__objc_runtime_mutex);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __objc_class_add_protocols (Class class,
|
|
|
|
|
struct objc_protocol_list* protos)
|
|
|
|
|
static void
|
|
|
|
|
__objc_class_add_protocols (Class class, struct objc_protocol_list *protos)
|
|
|
|
|
{
|
|
|
|
|
/* Well... */
|
|
|
|
|
/* Well... */
|
|
|
|
|
if (! protos)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
/* Add it... */
|
|
|
|
|
/* Add it... */
|
|
|
|
|
protos->next = class->protocols;
|
|
|
|
|
class->protocols = protos;
|
|
|
|
|
}
|
|
|
|
|
|
fedor
23 years ago