Loading...
--- xnu/xnu-792/libkern/c++/OSMetaClass.cpp
+++ xnu/xnu-201.19.3/libkern/c++/OSMetaClass.cpp
@@ -22,6 +22,7 @@
/* OSMetaClass.cpp created by gvdl on Fri 1998-11-17 */
#include <string.h>
+#include <sys/systm.h>
#include <libkern/OSReturn.h>
@@ -40,12 +41,11 @@
__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>
@@ -68,7 +68,7 @@
static const int kClassCapacityIncrement = 40;
static const int kKModCapacityIncrement = 10;
-static OSDictionary *sAllClassesDict, *sKModClassesDict, *sSortedByClassesDict;
+static OSDictionary *sAllClassesDict, *sKModClassesDict;
static mutex_t *loadLock;
static struct StalledData {
@@ -84,16 +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()
@@ -102,28 +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); }
@@ -167,7 +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);
@@ -285,10 +259,8 @@
do {
OSCollectionIterator *iter;
- if (sAllClassesDict) {
+ if (sAllClassesDict)
sAllClassesDict->removeObject(className);
- className->release();
- }
iter = OSCollectionIterator::withCollection(sKModClassesDict);
if (!iter)
@@ -320,16 +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
@@ -345,7 +317,7 @@
void *OSMetaClass::preModLoad(const char *kmodName)
{
if (!loadLock) {
- loadLock = mutex_alloc(0);
+ loadLock = mutex_alloc(ETAP_IO_AHA);
mutex_lock(loadLock);
}
else
@@ -381,7 +353,6 @@
{
OSReturn result = kOSReturnSuccess;
OSSet *kmodSet = 0;
- OSSymbol *myname = 0;
if (!sStalled || loadHandle != sStalled) {
logError(kOSMetaClassInternal);
@@ -398,8 +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;
}
@@ -408,7 +378,6 @@
case kCompletedBootstrap:
{
unsigned int i;
- myname = OSSymbol::withCStringNoCopy(sStalled->kmodName);
if (!sStalled->count)
break; // Nothing to do so just get out
@@ -432,20 +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;
@@ -458,9 +426,6 @@
if (kmodSet)
kmodSet->release();
-
- if (myname)
- myname->release();
if (sStalled) {
ACCUMSIZE(-(sStalled->capacity * sizeof(OSMetaClass *)
@@ -498,7 +463,7 @@
bool result = false;
if (!loadLock) {
- loadLock = mutex_alloc(0);
+ loadLock = mutex_alloc(ETAP_IO_AHA);
mutex_lock(loadLock);
}
else
@@ -558,8 +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)
{
@@ -568,7 +531,7 @@
OSCollectionIterator *kmods;
OSCollectionIterator *classes;
OSMetaClass *checkClass;
- kmod_info_t *ki = 0;
+ kmod_info_t *ki;
kern_return_t ret;
bool didUnload;
@@ -583,18 +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));
@@ -613,15 +570,13 @@
didUnload = true;
}
- }
+ } while (false);
kmods->release();
} while (didUnload);
mutex_unlock(loadLock);
-
- kmod_unload_cache();
}
void OSMetaClass::considerUnloads()
@@ -778,11 +733,6 @@
return superClassLink;
}
-const OSSymbol *OSMetaClass::getKmodName() const
-{
- return sSortedByClassesDict->getObject((const OSSymbol *)this);
-}
-
unsigned int OSMetaClass::getInstanceCount() const
{
return instanceCount;
@@ -814,50 +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;
+}
+