/* GNU Objective C Runtime selector related functions
- Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1995, 1996, 1997, 2002, 2004, 2009 Free Software Foundation, Inc.
Contributed by Kresten Krab Thorup
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify it under the
+GCC is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
-Foundation; either version 2, or (at your option) any later version.
+Foundation; either version 3, or (at your option) any later version.
-GNU CC is distributed in the hope that it will be useful, but WITHOUT ANY
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
-You should have received a copy of the GNU General Public License along with
-GNU CC; see the file COPYING. If not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
-/* As a special exception, if you link this library with files compiled with
- GCC to produce an executable, this does not cause the resulting executable
- to be covered by the GNU General Public License. This exception does not
- however invalidate any other reasons why the executable file might be
- covered by the GNU General Public License. */
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
-#include "runtime.h"
+
+#include "objc/runtime.h"
#include "objc/sarray.h"
-#include "encoding.h"
+#include "objc/encoding.h"
/* Initial selector hash table size. Value doesn't matter much */
#define SELECTOR_HASH_SIZE 128
/* Tables mapping selector names to uid and opposite */
-static struct sarray* __objc_selector_array = 0; /* uid -> sel !T:MUTEX */
-static struct sarray* __objc_selector_names = 0; /* uid -> name !T:MUTEX */
+static struct sarray *__objc_selector_array = 0; /* uid -> sel !T:MUTEX */
+static struct sarray *__objc_selector_names = 0; /* uid -> name !T:MUTEX */
static cache_ptr __objc_selector_hash = 0; /* name -> uid !T:MUTEX */
-static void register_selectors_from_list(MethodList_t);
-
/* Number of selectors stored in each of the above tables */
-int __objc_selector_max_index = 0; /* !T:MUTEX */
+unsigned int __objc_selector_max_index = 0; /* !T:MUTEX */
-void __objc_init_selector_tables()
+void __objc_init_selector_tables (void)
{
__objc_selector_array = sarray_new (SELECTOR_HASH_SIZE, 0);
__objc_selector_names = sarray_new (SELECTOR_HASH_SIZE, 0);
__objc_selector_hash
- = hash_new (SELECTOR_HASH_SIZE,
- (hash_func_type) hash_string,
- (compare_func_type) compare_strings);
+ = objc_hash_new (SELECTOR_HASH_SIZE,
+ (hash_func_type) objc_hash_string,
+ (compare_func_type) objc_compare_strings);
}
/* This routine is given a class and records all of the methods in its class
method_list = class->methods;
while (method_list)
{
- register_selectors_from_list (method_list);
+ __objc_register_selectors_from_list (method_list);
method_list = method_list->method_next;
}
}
the record table. This is the routine that does the actual recording
work.
- This one is only called for Class objects. For categories,
- class_add_method_list is called.
+ The name and type pointers in the method list must be permanent and
+ immutable.
*/
-static void
-register_selectors_from_list (MethodList_t method_list)
+void
+__objc_register_selectors_from_list (MethodList_t method_list)
{
int i = 0;
+
+ objc_mutex_lock (__objc_runtime_mutex);
while (i < method_list->method_count)
{
Method_t method = &method_list->method_list[i];
- method->method_name
- = sel_register_typed_name ((const char*)method->method_name,
- method->method_types);
+ if (method->method_name)
+ {
+ method->method_name
+ = __sel_register_typed_name ((const char *) method->method_name,
+ method->method_types, 0, YES);
+ }
i += 1;
}
+ objc_mutex_unlock (__objc_runtime_mutex);
}
/* Register instance methods as class methods for root classes */
-void __objc_register_instance_methods_to_class(Class class)
+void __objc_register_instance_methods_to_class (Class class)
{
MethodList_t method_list;
MethodList_t class_method_list;
Method_t curr_method;
/* Only if a root class. */
- if(class->super_class)
+ if (class->super_class)
return;
/* Allocate a method list to hold the new class methods */
- new_list = objc_calloc(sizeof(struct objc_method_list)
- + sizeof(struct objc_method[max_methods_no]), 1);
+ new_list = objc_calloc (sizeof (struct objc_method_list)
+ + sizeof (struct objc_method[max_methods_no]), 1);
method_list = class->methods;
class_method_list = class->class_pointer->methods;
curr_method = &new_list->method_list[0];
{
Method_t mth = &method_list->method_list[i];
if (mth->method_name
- && !search_for_method_in_list (class_method_list,
+ && ! search_for_method_in_list (class_method_list,
mth->method_name))
{
/* This instance method isn't a class method.
*curr_method = *mth;
/* Reallocate the method list if necessary */
- if(++new_list->method_count == max_methods_no)
+ if (++new_list->method_count == max_methods_no)
new_list =
- objc_realloc(new_list, sizeof(struct objc_method_list)
- + sizeof(struct
+ objc_realloc (new_list, sizeof (struct objc_method_list)
+ + sizeof (struct
objc_method[max_methods_no += 16]));
curr_method = &new_list->method_list[new_list->method_count];
}
if (new_list->method_count)
{
new_list =
- objc_realloc(new_list, sizeof(struct objc_method_list)
- + sizeof(struct objc_method[new_list->method_count]));
+ objc_realloc (new_list, sizeof (struct objc_method_list)
+ + sizeof (struct objc_method[new_list->method_count]));
new_list->method_next = class->class_pointer->methods;
class->class_pointer->methods = new_list;
}
+ else
+ objc_free(new_list);
__objc_update_dispatch_table_for_class (class->class_pointer);
}
/* Returns YES iff t1 and t2 have same method types, but we ignore
the argframe layout */
BOOL
-sel_types_match (const char* t1, const char* t2)
+sel_types_match (const char *t1, const char *t2)
{
- if (!t1 || !t2)
+ if (! t1 || ! t2)
return NO;
while (*t1 && *t2)
{
if (*t1 == '+') t1++;
if (*t2 == '+') t2++;
- while (isdigit(*t1)) t1++;
- while (isdigit(*t2)) t2++;
+ while (isdigit ((unsigned char) *t1)) t1++;
+ while (isdigit ((unsigned char) *t2)) t2++;
/* xxx Remove these next two lines when qualifiers are put in
all selectors, not just Protocol selectors. */
- t1 = objc_skip_type_qualifiers(t1);
- t2 = objc_skip_type_qualifiers(t2);
- if (!*t1 && !*t2)
+ t1 = objc_skip_type_qualifiers (t1);
+ t2 = objc_skip_type_qualifiers (t2);
+ if (! *t1 && ! *t2)
return YES;
if (*t1 != *t2)
return NO;
struct objc_list *l;
sidx i;
- objc_mutex_lock(__objc_runtime_mutex);
+ objc_mutex_lock (__objc_runtime_mutex);
- i = (sidx) hash_value_for_key (__objc_selector_hash, name);
+ i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (i == 0)
{
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
- for (l = (struct objc_list*)sarray_get_safe (__objc_selector_array, i);
+ for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
l; l = l->tail)
{
- SEL s = (SEL)l->head;
+ SEL s = (SEL) l->head;
if (types == 0 || s->sel_types == 0)
{
if (s->sel_types == types)
{
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
}
else if (sel_types_match (s->sel_types, types))
{
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
}
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
sidx i;
SEL s = NULL;
- objc_mutex_lock(__objc_runtime_mutex);
+ objc_mutex_lock (__objc_runtime_mutex);
- i = (sidx) hash_value_for_key (__objc_selector_hash, name);
+ i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (i == 0)
{
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
- for (l = (struct objc_list*)sarray_get_safe (__objc_selector_array, i);
+ for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
l; l = l->tail)
{
s = (SEL) l->head;
if (s->sel_types)
{
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
}
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return s;
}
struct objc_list *l;
sidx i;
- objc_mutex_lock(__objc_runtime_mutex);
+ objc_mutex_lock (__objc_runtime_mutex);
- i = (sidx) hash_value_for_key (__objc_selector_hash, name);
+ i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (soffset_decode (i) == 0)
{
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return 0;
}
- l = (struct objc_list*)sarray_get_safe (__objc_selector_array, i);
- objc_mutex_unlock(__objc_runtime_mutex);
+ l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
+ objc_mutex_unlock (__objc_runtime_mutex);
if (l == 0)
return 0;
- return (SEL)l->head;
+ return (SEL) l->head;
}
/* return selector representing name */
/* Get name of selector. If selector is unknown, the empty string ""
is returned */
-const char*
-sel_get_name (SEL selector)
+const char *sel_get_name (SEL selector)
{
const char *ret;
- objc_mutex_lock(__objc_runtime_mutex);
- if ((soffset_decode((sidx)selector->sel_id) > 0)
- && (soffset_decode((sidx)selector->sel_id) <= __objc_selector_max_index))
+ objc_mutex_lock (__objc_runtime_mutex);
+ if ((soffset_decode ((sidx)selector->sel_id) > 0)
+ && (soffset_decode ((sidx)selector->sel_id) <= __objc_selector_max_index))
ret = sarray_get_safe (__objc_selector_names, (sidx) selector->sel_id);
else
ret = 0;
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return ret;
}
}
-const char*
-sel_get_type (SEL selector)
+const char *sel_get_type (SEL selector)
{
if (selector)
return selector->sel_types;
}
/* The uninstalled dispatch table */
-extern struct sarray* __objc_uninstalled_dtable;
+extern struct sarray *__objc_uninstalled_dtable;
+
+/* __sel_register_typed_name allocates lots of struct objc_selector:s
+ of 8 (16, if pointers are 64 bits) bytes at startup. To reduce the number
+ of malloc calls and memory lost to malloc overhead, we allocate
+ objc_selector:s in blocks here. This is only called from
+ __sel_register_typed_name, and __sel_register_typed_name may only be
+ called when __objc_runtime_mutex is locked.
+
+ Note that the objc_selector:s allocated from __sel_register_typed_name
+ are never freed.
+
+ 62 because 62 * sizeof (struct objc_selector) = 496 (992). This should
+ let malloc add some overhead and use a nice, round 512 (1024) byte chunk.
+ */
+#define SELECTOR_POOL_SIZE 62
+static struct objc_selector *selector_pool;
+static int selector_pool_left;
+
+static struct objc_selector *
+pool_alloc_selector(void)
+{
+ if (!selector_pool_left)
+ {
+ selector_pool = objc_malloc (sizeof (struct objc_selector)
+ * SELECTOR_POOL_SIZE);
+ selector_pool_left = SELECTOR_POOL_SIZE;
+ }
+ return &selector_pool[--selector_pool_left];
+}
/* Store the passed selector name in the selector record and return its
selector value (value returned by sel_get_uid).
__sel_register_typed_name (const char *name, const char *types,
struct objc_selector *orig, BOOL is_const)
{
- struct objc_selector* j;
+ struct objc_selector *j;
sidx i;
struct objc_list *l;
- i = (sidx) hash_value_for_key (__objc_selector_hash, name);
+ i = (sidx) objc_hash_value_for_key (__objc_selector_hash, name);
if (soffset_decode (i) != 0)
{
- for (l = (struct objc_list*)sarray_get_safe (__objc_selector_array, i);
+ for (l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
l; l = l->tail)
{
- SEL s = (SEL)l->head;
+ SEL s = (SEL) l->head;
if (types == 0 || s->sel_types == 0)
{
if (s->sel_types == types)
{
if (orig)
{
- orig->sel_id = (void*)i;
+ orig->sel_id = (void *) i;
return orig;
}
else
return s;
}
}
- else if (!strcmp (s->sel_types, types))
+ else if (! strcmp (s->sel_types, types))
{
if (orig)
{
- orig->sel_id = (void*)i;
+ orig->sel_id = (void *) i;
return orig;
}
else
if (orig)
j = orig;
else
- j = objc_malloc (sizeof (struct objc_selector));
+ j = pool_alloc_selector ();
- j->sel_id = (void*)i;
+ j->sel_id = (void *) i;
/* Can we use the pointer or must copy types? Don't copy if NULL */
if ((is_const) || (types == 0))
- j->sel_types = (const char*)types;
+ j->sel_types = (const char *) types;
else {
- j->sel_types = (char *) objc_malloc(strlen(types)+1);
- strcpy((char *)j->sel_types, types);
+ j->sel_types = (char *) objc_malloc (strlen (types) + 1);
+ strcpy ((char *) j->sel_types, types);
}
- l = (struct objc_list*)sarray_get_safe (__objc_selector_array, i);
+ l = (struct objc_list *) sarray_get_safe (__objc_selector_array, i);
}
else
{
__objc_selector_max_index += 1;
- i = soffset_encode(__objc_selector_max_index);
+ i = soffset_encode (__objc_selector_max_index);
if (orig)
j = orig;
else
- j = objc_malloc (sizeof (struct objc_selector));
+ j = pool_alloc_selector ();
- j->sel_id = (void*)i;
+ j->sel_id = (void *) i;
/* Can we use the pointer or must copy types? Don't copy if NULL */
if ((is_const) || (types == 0))
- j->sel_types = (const char*)types;
+ j->sel_types = (const char *) types;
else {
- j->sel_types = (char *) objc_malloc(strlen(types)+1);
- strcpy((char *)j->sel_types, types);
+ j->sel_types = (char *) objc_malloc (strlen (types) + 1);
+ strcpy ((char *) j->sel_types, types);
}
l = 0;
}
DEBUG_PRINTF ("Record selector %s[%s] as: %ld\n", name, types,
- soffset_decode (i));
+ (long) soffset_decode (i));
{
int is_new = (l == 0);
if ((is_const) || (name == 0))
new_name = name;
else {
- new_name = (char *) objc_malloc(strlen(name)+1);
- strcpy((char *)new_name, name);
+ new_name = (char *) objc_malloc (strlen (name) + 1);
+ strcpy ((char *) new_name, name);
}
- l = list_cons ((void*)j, l);
+ l = list_cons ((void *) j, l);
sarray_at_put_safe (__objc_selector_names, i, (void *) new_name);
sarray_at_put_safe (__objc_selector_array, i, (void *) l);
if (is_new)
- hash_add (&__objc_selector_hash, (void *) new_name, (void *) i);
+ objc_hash_add (&__objc_selector_hash, (void *) new_name, (void *) i);
}
- sarray_realloc(__objc_uninstalled_dtable, __objc_selector_max_index+1);
+ sarray_realloc (__objc_uninstalled_dtable, __objc_selector_max_index + 1);
return (SEL) j;
}
{
SEL ret;
- objc_mutex_lock(__objc_runtime_mutex);
+ objc_mutex_lock (__objc_runtime_mutex);
/* Assume that name is not constant static memory and needs to be
copied before put into a runtime structure. is_const == NO */
ret = __sel_register_typed_name (name, 0, 0, NO);
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return ret;
}
sel_register_typed_name (const char *name, const char *type)
{
SEL ret;
-
- objc_mutex_lock(__objc_runtime_mutex);
+
+ objc_mutex_lock (__objc_runtime_mutex);
/* Assume that name and type are not constant static memory and need to
be copied before put into a runtime structure. is_const == NO */
ret = __sel_register_typed_name (name, type, 0, NO);
- objc_mutex_unlock(__objc_runtime_mutex);
+ objc_mutex_unlock (__objc_runtime_mutex);
return ret;
}
-
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