#include "objc-private.h"
#include "objc-sel-set.h"
-#if SUPPORT_PREOPT
-#include <objc-shared-cache.h>
-using namespace objc_opt;
-static const objc_selopt_t *builtins = NULL;
-#endif
-
__BEGIN_DECLS
static size_t SelrefCount = 0;
static struct __objc_sel_set *_objc_selectors = NULL;
-#if SUPPORT_PREOPT
-void dump_builtins(void)
-{
- uint32_t occupied = builtins->occupied;
- uint32_t capacity = builtins->capacity;
-
- _objc_inform("BUILTIN SELECTORS: %d selectors", occupied);
- _objc_inform("BUILTIN SELECTORS: %d/%d (%d%%) hash table occupancy",
- occupied, capacity, (int)(occupied/(double)capacity * 100));
- _objc_inform("BUILTIN SELECTORS: using __TEXT,__objc_selopt at %p",
- builtins);
- _objc_inform("BUILTIN SELECTORS: capacity: %u", builtins->capacity);
- _objc_inform("BUILTIN SELECTORS: occupied: %u", builtins->occupied);
- _objc_inform("BUILTIN SELECTORS: shift: %u", builtins->shift);
- _objc_inform("BUILTIN SELECTORS: mask: 0x%x", builtins->mask);
- _objc_inform("BUILTIN SELECTORS: zero: %u", builtins->zero);
- _objc_inform("BUILTIN SELECTORS: salt: 0x%llx", builtins->salt);
-
- const int32_t *offsets = builtins->offsets();
- uint32_t i;
- for (i = 0; i < capacity; i++) {
- if (offsets[i] != offsetof(objc_stringhash_t, zero)) {
- const char *str = (const char *)builtins + offsets[i];
- _objc_inform("BUILTIN SELECTORS: %6d: %+8d %s",
- i, offsets[i], str);
- if ((const char *)sel_registerName(str) != str) {
- _objc_fatal("bogus");
- }
- } else {
- _objc_inform("BUILTIN SELECTORS: %6d: ", i);
- }
- }
-}
-#endif
-
-
static SEL _objc_search_builtins(const char *key)
{
#if defined(DUMP_SELECTORS)
#endif
if (!key) return (SEL)0;
-#if SUPPORT_IGNORED_SELECTOR_CONSTANT
- if ((uintptr_t)key == kIgnore) return (SEL)kIgnore;
- if (ignoreSelectorNamed(key)) return (SEL)kIgnore;
-#endif
if ('\0' == *key) return (SEL)_objc_empty_selector;
-#if SUPPORT_PREOPT
- assert(builtins);
- return (SEL)builtins->get(key);
-#endif
-
return (SEL)0;
}
const char *sel_getName(SEL sel) {
-#if SUPPORT_IGNORED_SELECTOR_CONSTANT
- if ((uintptr_t)sel == kIgnore) return "<ignored selector>";
-#endif
return sel ? (const char *)sel : "<null selector>";
}
BOOL sel_isMapped(SEL name)
{
- SEL result;
+ SEL sel;
if (!name) return NO;
-#if SUPPORT_IGNORED_SELECTOR_CONSTANT
- if ((uintptr_t)name == kIgnore) return YES;
-#endif
- result = _objc_search_builtins((const char *)name);
- if (result) return YES;
+ sel = _objc_search_builtins((const char *)name);
+ if (sel) return YES;
- rwlock_read(&selLock);
+ mutex_locker_t lock(selLock);
if (_objc_selectors) {
- result = __objc_sel_set_get(_objc_selectors, name);
+ sel = __objc_sel_set_get(_objc_selectors, name);
}
- rwlock_unlock_read(&selLock);
- return result ? YES : NO;
+ return bool(sel);
}
-static SEL __sel_registerName(const char *name, int lock, int copy)
+static SEL __sel_registerName(const char *name, bool shouldLock, bool copy)
{
SEL result = 0;
- if (lock) rwlock_assert_unlocked(&selLock);
- else rwlock_assert_writing(&selLock);
+ if (shouldLock) selLock.assertUnlocked();
+ else selLock.assertLocked();
if (!name) return (SEL)0;
result = _objc_search_builtins(name);
if (result) return result;
-
- if (lock) rwlock_read(&selLock);
+
+ conditional_mutex_locker_t lock(selLock, shouldLock);
if (_objc_selectors) {
result = __objc_sel_set_get(_objc_selectors, (SEL)name);
}
- if (lock) rwlock_unlock_read(&selLock);
if (result) return result;
// No match. Insert.
- if (lock) rwlock_write(&selLock);
-
if (!_objc_selectors) {
_objc_selectors = __objc_sel_set_create(SelrefCount);
}
- if (lock) {
- // Rescan in case it was added while we dropped the lock
- result = __objc_sel_set_get(_objc_selectors, (SEL)name);
- }
if (!result) {
- result = (SEL)(copy ? _strdup_internal(name) : name);
+ result = (SEL)(copy ? strdup(name) : name);
__objc_sel_set_add(_objc_selectors, result);
#if defined(DUMP_UNKNOWN_SELECTORS)
printf("\t\"%s\",\n", name);
#endif
}
- if (lock) rwlock_unlock_write(&selLock);
return result;
}
return __sel_registerName(name, 1, 1); // YES lock, YES copy
}
-SEL sel_registerNameNoLock(const char *name, BOOL copy) {
+SEL sel_registerNameNoLock(const char *name, bool copy) {
return __sel_registerName(name, 0, copy); // NO lock, maybe copy
}
-void sel_lock(void)
-{
- rwlock_write(&selLock);
-}
-
-void sel_unlock(void)
-{
- rwlock_unlock_write(&selLock);
-}
-
// 2001/1/24
// the majority of uses of this function (which used to return NULL if not found)
BOOL sel_isEqual(SEL lhs, SEL rhs)
{
- return (lhs == rhs) ? YES : NO;
-}
-
-
-/***********************************************************************
-* sel_preoptimizationValid
-* Return YES if this image's selector fixups are valid courtesy
-* of the dyld shared cache.
-**********************************************************************/
-BOOL sel_preoptimizationValid(const header_info *hi)
-{
-#if !SUPPORT_PREOPT
-
- return NO;
-
-#else
-
-# if SUPPORT_IGNORED_SELECTOR_CONSTANT
- // shared cache can't fix constant ignored selectors
- if (UseGC) return NO;
-# endif
-
- // preoptimization disabled for some reason
- if (!isPreoptimized()) return NO;
-
- // image not from shared cache, or not fixed inside shared cache
- if (!_objcHeaderOptimizedByDyld(hi)) return NO;
-
- return YES;
-
-#endif
+ return bool(lhs == rhs);
}
* sel_init
* Initialize selector tables and register selectors used internally.
**********************************************************************/
-void sel_init(BOOL wantsGC, size_t selrefCount)
+void sel_init(size_t selrefCount)
{
// save this value for later
SelrefCount = selrefCount;
-#if SUPPORT_PREOPT
- builtins = preoptimizedSelectors();
-#endif
-
// Register selectors used by libobjc
- if (wantsGC) {
- // Registering retain/release/autorelease requires GC decision first.
- // sel_init doesn't actually need the wantsGC parameter, it just
- // helps enforce the initialization order.
- }
+ mutex_locker_t lock(selLock);
+
+ SEL_cxx_construct = sel_registerNameNoLock(".cxx_construct", NO);
+ SEL_cxx_destruct = sel_registerNameNoLock(".cxx_destruct", NO);
-#define s(x) SEL_##x = sel_registerNameNoLock(#x, NO)
-#define t(x,y) SEL_##y = sel_registerNameNoLock(#x, NO)
-
- sel_lock();
-
- s(load);
- s(initialize);
- t(resolveInstanceMethod:, resolveInstanceMethod);
- t(resolveClassMethod:, resolveClassMethod);
- t(.cxx_construct, cxx_construct);
- t(.cxx_destruct, cxx_destruct);
- s(retain);
- s(release);
- s(autorelease);
- s(retainCount);
- s(alloc);
- t(allocWithZone:, allocWithZone);
- s(copy);
- s(new);
- s(finalize);
- t(forwardInvocation:, forwardInvocation);
-
- sel_unlock();
-
-#undef s
-#undef t
+ extern SEL FwdSel;
+ FwdSel = sel_registerNameNoLock("forward::", NO);
}
__END_DECLS
projects / apple / objc4.git / blobdiff