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--- xnu/xnu-517.3.15/libkern/c++/OSMetaClass.cpp
+++ xnu/xnu-201.5/libkern/c++/OSMetaClass.cpp
@@ -3,22 +3,19 @@
*
* @APPLE_LICENSE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License"). You may not use this file except in compliance with the
+ * License. Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
*
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
@@ -49,7 +46,6 @@
#include <kern/lock.h>
#include <kern/clock.h>
#include <kern/thread_call.h>
-#include <kern/host.h>
#include <mach/kmod.h>
#include <mach/mach_interface.h>
@@ -88,16 +84,12 @@
static const char OSMetaClassBasePanicMsg[] =
"OSMetaClassBase::_RESERVEDOSMetaClassBase%d called\n";
-#if SLOT_USED
void OSMetaClassBase::_RESERVEDOSMetaClassBase0()
{ panic(OSMetaClassBasePanicMsg, 0); }
void OSMetaClassBase::_RESERVEDOSMetaClassBase1()
{ panic(OSMetaClassBasePanicMsg, 1); }
void OSMetaClassBase::_RESERVEDOSMetaClassBase2()
{ panic(OSMetaClassBasePanicMsg, 2); }
-#endif /* SLOT_USED */
-
-// As these slots are used move them up inside the #if above
void OSMetaClassBase::_RESERVEDOSMetaClassBase3()
{ panic(OSMetaClassBasePanicMsg, 3); }
void OSMetaClassBase::_RESERVEDOSMetaClassBase4()
@@ -106,28 +98,6 @@
{ panic(OSMetaClassBasePanicMsg, 5); }
void OSMetaClassBase::_RESERVEDOSMetaClassBase6()
{ panic(OSMetaClassBasePanicMsg, 6); }
-
-/*
- * These used to be inline in the header but gcc didn't believe us
- * Now we MUST pull the inline out at least until the compiler is
- * repaired.
- */
-// Helper inlines for runtime type preprocessor macros
-OSMetaClassBase *OSMetaClassBase::
-safeMetaCast(const OSMetaClassBase *me, const OSMetaClass *toType)
- { return (me)? me->metaCast(toType) : 0; }
-
-bool OSMetaClassBase::
-checkTypeInst(const OSMetaClassBase *inst, const OSMetaClassBase *typeinst)
-{
- const OSMetaClass *toType = OSTypeIDInst(typeinst);
- return typeinst && inst && (0 != inst->metaCast(toType));
-}
-
-
-// If you need this slot you had better setup an IOCTL style interface.
-// 'Cause the whole kernel world depends on OSMetaClassBase and YOU
-// CANT change the VTABLE size ever.
void OSMetaClassBase::_RESERVEDOSMetaClassBase7()
{ panic(OSMetaClassBasePanicMsg, 7); }
@@ -171,7 +141,7 @@
OSMetaClassBase *OSMetaClassBase::metaCast(const char *toMetaCStr) const
{
- const OSSymbol *tempSymb = OSSymbol::withCString(toMetaCStr);
+ const OSSymbol *tempSymb = OSSymbol::withCStringNoCopy(toMetaCStr);
OSMetaClassBase *ret = 0;
if (tempSymb) {
ret = metaCast(tempSymb);
@@ -326,13 +296,12 @@
}
}
+// Don't do anything as these classes must be statically allocated
void *OSMetaClass::operator new(size_t size) { return 0; }
+void OSMetaClass::operator delete(void *mem, size_t size) { }
void OSMetaClass::retain() const { }
void OSMetaClass::release() const { }
-void OSMetaClass::release(int when) const { }
-void OSMetaClass::taggedRetain(const void *tag) const { }
-void OSMetaClass::taggedRelease(const void *tag) const { }
-void OSMetaClass::taggedRelease(const void *tag, const int when) const { }
+void OSMetaClass::release(int when) const { };
int OSMetaClass::getRetainCount() const { return 0; }
const char *OSMetaClass::getClassName() const
@@ -554,8 +523,6 @@
iter->release();
}
-extern "C" kern_return_t kmod_unload_cache(void);
-
static void _OSMetaClassConsiderUnloads(thread_call_param_t p0,
thread_call_param_t p1)
{
@@ -564,7 +531,7 @@
OSCollectionIterator *kmods;
OSCollectionIterator *classes;
OSMetaClass *checkClass;
- kmod_info_t *ki = 0;
+ kmod_info_t *ki;
kern_return_t ret;
bool didUnload;
@@ -579,18 +546,12 @@
didUnload = false;
while ( (kmodName = (OSSymbol *) kmods->getNextObject()) ) {
- if (ki) {
- kfree((vm_offset_t) ki, sizeof(kmod_info_t));
- ki = 0;
- }
-
- ki = kmod_lookupbyname_locked((char *)kmodName->getCStringNoCopy());
+ ki = kmod_lookupbyname((char *)kmodName->getCStringNoCopy());
if (!ki)
continue;
- if (ki->reference_count) {
- continue;
- }
+ if (ki->reference_count)
+ continue;
kmodClasses = OSDynamicCast(OSSet,
sKModClassesDict->getObject(kmodName));
@@ -609,15 +570,13 @@
didUnload = true;
}
- }
+ } while (false);
kmods->release();
} while (didUnload);
mutex_unlock(loadLock);
-
- kmod_unload_cache();
}
void OSMetaClass::considerUnloads()
@@ -805,50 +764,31 @@
OSDictionary * OSMetaClass::getClassDictionary()
{
- panic("OSMetaClass::getClassDictionary(): Obsoleted\n");
- return 0;
+ return sAllClassesDict;
}
bool OSMetaClass::serialize(OSSerialize *s) const
{
- panic("OSMetaClass::serialize(): Obsoleted\n");
- return false;
-}
-
-void OSMetaClass::serializeClassDictionary(OSDictionary *serializeDictionary)
-{
- OSDictionary *classDict;
-
- classDict = OSDictionary::withCapacity(sAllClassesDict->getCount());
- if (!classDict)
- return;
-
- mutex_lock(loadLock);
- do {
- OSCollectionIterator *classes;
- const OSSymbol *className;
-
- classes = OSCollectionIterator::withCollection(sAllClassesDict);
- if (!classes)
- break;
-
- while ((className = (const OSSymbol *) classes->getNextObject())) {
- const OSMetaClass *meta;
- OSNumber *count;
-
- meta = (OSMetaClass *) sAllClassesDict->getObject(className);
- count = OSNumber::withNumber(meta->getInstanceCount(), 32);
- if (count) {
- classDict->setObject(className, count);
- count->release();
- }
- }
- classes->release();
-
- serializeDictionary->setObject("Classes", classDict);
- } while (0);
-
- mutex_unlock(loadLock);
-
- classDict->release();
-}
+ OSDictionary * dict;
+ OSNumber * off;
+ bool ok = false;
+
+ if (s->previouslySerialized(this)) return true;
+
+ dict = 0;// IODictionary::withCapacity(2);
+ off = OSNumber::withNumber(getInstanceCount(), 32);
+
+ if (dict) {
+ dict->setObject("InstanceCount", off );
+ ok = dict->serialize(s);
+ } else if( off)
+ ok = off->serialize(s);
+
+ if (dict)
+ dict->release();
+ if (off)
+ off->release();
+
+ return ok;
+}
+