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--- xnu/xnu-792.18.15/libkern/c++/OSMetaClass.cpp
+++ xnu/xnu-124.1/libkern/c++/OSMetaClass.cpp
@@ -1,33 +1,28 @@
/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_HEADER_START@
*
- * 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. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
+ * 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.
*
- * 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_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
*/
/* OSMetaClass.cpp created by gvdl on Fri 1998-11-17 */
#include <string.h>
+#include <sys/systm.h>
#include <libkern/OSReturn.h>
@@ -44,17 +39,13 @@
#include <libkern/c++/OSLib.h>
#include <libkern/OSAtomic.h>
-#include <IOKit/pwr_mgt/RootDomain.h>
-#include <IOKit/IOMessage.h>
-
__BEGIN_DECLS
-#include <sys/systm.h>
#include <mach/mach_types.h>
+#include <mach/etap_events.h>
#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>
@@ -77,9 +68,9 @@
static const int kClassCapacityIncrement = 40;
static const int kKModCapacityIncrement = 10;
-static OSDictionary *sAllClassesDict, *sKModClassesDict, *sSortedByClassesDict;
-
-static mutex_t *loadLock = 0;
+static OSDictionary *sAllClassesDict, *sKModClassesDict;
+
+static mutex_t *loadLock;
static struct StalledData {
const char *kmodName;
OSReturn result;
@@ -89,22 +80,16 @@
} *sStalled;
static unsigned int sConsiderUnloadDelay = 60; /* secs */
-static bool unloadsEnabled = true; // set to false when system going to sleep
-static thread_call_t unloadCallout = 0;
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()
@@ -113,28 +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); }
@@ -178,7 +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);
@@ -283,7 +246,7 @@
sStalled->capacity += kKModCapacityIncrement;
memmove(sStalled->classes, oldStalled, oldSize);
- kfree(oldStalled, oldSize);
+ kfree((vm_offset_t)oldStalled, oldSize);
ACCUMSIZE(newSize - oldSize);
}
@@ -296,10 +259,8 @@
do {
OSCollectionIterator *iter;
- if (sAllClassesDict) {
+ if (sAllClassesDict)
sAllClassesDict->removeObject(className);
- className->release();
- }
iter = OSCollectionIterator::withCollection(sKModClassesDict);
if (!iter)
@@ -331,16 +292,16 @@
memmove(&sStalled->classes[i], &sStalled->classes[i+1],
(sStalled->count - i) * sizeof(OSMetaClass *));
}
- }
-}
-
+ return;
+ }
+}
+
+// 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
@@ -356,18 +317,18 @@
void *OSMetaClass::preModLoad(const char *kmodName)
{
if (!loadLock) {
- loadLock = mutex_alloc(0);
- mutex_lock(loadLock);
+ loadLock = mutex_alloc(ETAP_IO_AHA);
+ _mutex_lock(loadLock);
}
else
- mutex_lock(loadLock);
+ _mutex_lock(loadLock);
sStalled = (StalledData *) kalloc(sizeof(*sStalled));
if (sStalled) {
sStalled->classes = (OSMetaClass **)
kalloc(kKModCapacityIncrement * sizeof(OSMetaClass *));
if (!sStalled->classes) {
- kfree(sStalled, sizeof(*sStalled));
+ kfree((vm_offset_t) sStalled, sizeof(*sStalled));
return 0;
}
ACCUMSIZE((kKModCapacityIncrement * sizeof(OSMetaClass *)) + sizeof(*sStalled));
@@ -392,7 +353,6 @@
{
OSReturn result = kOSReturnSuccess;
OSSet *kmodSet = 0;
- OSSymbol *myname = 0;
if (!sStalled || loadHandle != sStalled) {
logError(kOSMetaClassInternal);
@@ -409,8 +369,7 @@
case kMakingDictionaries:
sKModClassesDict = OSDictionary::withCapacity(kKModCapacityIncrement);
sAllClassesDict = OSDictionary::withCapacity(kClassCapacityIncrement);
- sSortedByClassesDict = OSDictionary::withCapacity(kClassCapacityIncrement);
- if (!sAllClassesDict || !sKModClassesDict || !sSortedByClassesDict) {
+ if (!sAllClassesDict || !sKModClassesDict) {
result = kOSMetaClassNoDicts;
break;
}
@@ -419,7 +378,6 @@
case kCompletedBootstrap:
{
unsigned int i;
- myname = (OSSymbol *)OSSymbol::withCStringNoCopy(sStalled->kmodName);
if (!sStalled->count)
break; // Nothing to do so just get out
@@ -443,20 +401,19 @@
break;
}
- if (!sKModClassesDict->setObject(myname, kmodSet)) {
+ if (!sKModClassesDict->setObject(sStalled->kmodName, kmodSet)) {
result = kOSMetaClassNoInsKModSet;
break;
}
// Second pass symbolling strings and inserting classes in dictionary
- for (i = 0; i < sStalled->count; i++) {
+ for (unsigned int i = 0; i < sStalled->count; i++) {
OSMetaClass *me = sStalled->classes[i];
me->className =
OSSymbol::withCStringNoCopy((const char *) me->className);
sAllClassesDict->setObject(me->className, me);
kmodSet->setObject(me);
- sSortedByClassesDict->setObject((const OSSymbol *)me, myname);
}
sBootstrapState = kCompletedBootstrap;
break;
@@ -470,15 +427,12 @@
if (kmodSet)
kmodSet->release();
- if (myname)
- myname->release();
-
if (sStalled) {
ACCUMSIZE(-(sStalled->capacity * sizeof(OSMetaClass *)
+ sizeof(*sStalled)));
- kfree(sStalled->classes,
+ kfree((vm_offset_t) sStalled->classes,
sStalled->capacity * sizeof(OSMetaClass *));
- kfree(sStalled, sizeof(*sStalled));
+ kfree((vm_offset_t) sStalled, sizeof(*sStalled));
sStalled = 0;
}
@@ -509,11 +463,11 @@
bool result = false;
if (!loadLock) {
- loadLock = mutex_alloc(0);
- mutex_lock(loadLock);
+ loadLock = mutex_alloc(ETAP_IO_AHA);
+ _mutex_lock(loadLock);
}
else
- mutex_lock(loadLock);
+ _mutex_lock(loadLock);
do {
OSSet *kmodClasses;
@@ -569,36 +523,6 @@
iter->release();
}
-
-extern "C" {
-
-IOReturn OSMetaClassSystemSleepOrWake(UInt32 messageType)
-{
- mutex_lock(loadLock);
-
- /* If the system is going to sleep, cancel the reaper thread timer
- * and mark unloads disabled in case it just fired but hasn't
- * taken the lock yet. If we are coming back from sleep, just
- * set unloads enabled; IOService's normal operation will cause
- * unloads to be considered soon enough.
- */
- if (messageType == kIOMessageSystemWillSleep) {
- if (unloadCallout) {
- thread_call_cancel(unloadCallout);
- }
- unloadsEnabled = false;
- } else if (messageType == kIOMessageSystemHasPoweredOn) {
- unloadsEnabled = true;
- }
- mutex_unlock(loadLock);
-
- return kIOReturnSuccess;
-}
-
-};
-
-extern "C" kern_return_t kmod_unload_cache(void);
-
static void _OSMetaClassConsiderUnloads(thread_call_param_t p0,
thread_call_param_t p1)
{
@@ -607,16 +531,11 @@
OSCollectionIterator *kmods;
OSCollectionIterator *classes;
OSMetaClass *checkClass;
- kmod_info_t *ki = 0;
+ kmod_info_t *ki;
kern_return_t ret;
bool didUnload;
- mutex_lock(loadLock);
-
- if (!unloadsEnabled) {
- mutex_unlock(loadLock);
- return;
- }
+ _mutex_lock(loadLock);
do {
@@ -627,18 +546,12 @@
didUnload = false;
while ( (kmodName = (OSSymbol *) kmods->getNextObject()) ) {
- if (ki) {
- kfree(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));
@@ -657,22 +570,21 @@
didUnload = true;
}
- }
+ } while (false);
kmods->release();
} while (didUnload);
mutex_unlock(loadLock);
-
- kmod_unload_cache();
}
void OSMetaClass::considerUnloads()
{
+ static thread_call_t unloadCallout;
AbsoluteTime when;
- mutex_lock(loadLock);
+ _mutex_lock(loadLock);
if (!unloadCallout)
unloadCallout = thread_call_allocate(&_OSMetaClassConsiderUnloads, 0);
@@ -718,7 +630,7 @@
OSObject *OSMetaClass::allocClassWithName(const OSSymbol *name)
{
OSObject * result;
- mutex_lock(loadLock);
+ _mutex_lock(loadLock);
const OSMetaClass * const meta = getMetaClassWithName(name);
@@ -753,7 +665,7 @@
checkMetaCastWithName(const OSSymbol *name, const OSMetaClassBase *in)
{
OSMetaClassBase * result;
- mutex_lock(loadLock);
+ _mutex_lock(loadLock);
const OSMetaClass * const meta = getMetaClassWithName(name);
if (meta)
@@ -819,11 +731,6 @@
const OSMetaClass *OSMetaClass::getSuperClass() const
{
return superClassLink;
-}
-
-const OSSymbol *OSMetaClass::getKmodName() const
-{
- return (const OSSymbol *)sSortedByClassesDict->getObject((OSSymbol *)this);
}
unsigned int OSMetaClass::getInstanceCount() const
@@ -857,50 +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;
+}
+