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--- xnu/xnu-124.1/libkern/c++/OSMetaClass.cpp
+++ xnu/xnu-792/libkern/c++/OSMetaClass.cpp
@@ -22,7 +22,6 @@
/* OSMetaClass.cpp created by gvdl on Fri 1998-11-17 */
#include <string.h>
-#include <sys/systm.h>
#include <libkern/OSReturn.h>
@@ -41,11 +40,12 @@
__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;
+static OSDictionary *sAllClassesDict, *sKModClassesDict, *sSortedByClassesDict;
static mutex_t *loadLock;
static struct StalledData {
@@ -84,12 +84,16 @@
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()
@@ -98,6 +102,28 @@
{ 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); }
@@ -141,7 +167,7 @@
OSMetaClassBase *OSMetaClassBase::metaCast(const char *toMetaCStr) const
{
- const OSSymbol *tempSymb = OSSymbol::withCStringNoCopy(toMetaCStr);
+ const OSSymbol *tempSymb = OSSymbol::withCString(toMetaCStr);
OSMetaClassBase *ret = 0;
if (tempSymb) {
ret = metaCast(tempSymb);
@@ -259,8 +285,10 @@
do {
OSCollectionIterator *iter;
- if (sAllClassesDict)
+ if (sAllClassesDict) {
sAllClassesDict->removeObject(className);
+ className->release();
+ }
iter = OSCollectionIterator::withCollection(sKModClassesDict);
if (!iter)
@@ -292,16 +320,16 @@
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::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 { }
int OSMetaClass::getRetainCount() const { return 0; }
const char *OSMetaClass::getClassName() const
@@ -317,11 +345,11 @@
void *OSMetaClass::preModLoad(const char *kmodName)
{
if (!loadLock) {
- loadLock = mutex_alloc(ETAP_IO_AHA);
- _mutex_lock(loadLock);
+ loadLock = mutex_alloc(0);
+ mutex_lock(loadLock);
}
else
- _mutex_lock(loadLock);
+ mutex_lock(loadLock);
sStalled = (StalledData *) kalloc(sizeof(*sStalled));
if (sStalled) {
@@ -353,6 +381,7 @@
{
OSReturn result = kOSReturnSuccess;
OSSet *kmodSet = 0;
+ OSSymbol *myname = 0;
if (!sStalled || loadHandle != sStalled) {
logError(kOSMetaClassInternal);
@@ -369,7 +398,8 @@
case kMakingDictionaries:
sKModClassesDict = OSDictionary::withCapacity(kKModCapacityIncrement);
sAllClassesDict = OSDictionary::withCapacity(kClassCapacityIncrement);
- if (!sAllClassesDict || !sKModClassesDict) {
+ sSortedByClassesDict = OSDictionary::withCapacity(kClassCapacityIncrement);
+ if (!sAllClassesDict || !sKModClassesDict || !sSortedByClassesDict) {
result = kOSMetaClassNoDicts;
break;
}
@@ -378,6 +408,7 @@
case kCompletedBootstrap:
{
unsigned int i;
+ myname = OSSymbol::withCStringNoCopy(sStalled->kmodName);
if (!sStalled->count)
break; // Nothing to do so just get out
@@ -401,19 +432,20 @@
break;
}
- if (!sKModClassesDict->setObject(sStalled->kmodName, kmodSet)) {
+ if (!sKModClassesDict->setObject(myname, kmodSet)) {
result = kOSMetaClassNoInsKModSet;
break;
}
// Second pass symbolling strings and inserting classes in dictionary
- for (unsigned int i = 0; i < sStalled->count; i++) {
+ for (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;
@@ -426,6 +458,9 @@
if (kmodSet)
kmodSet->release();
+
+ if (myname)
+ myname->release();
if (sStalled) {
ACCUMSIZE(-(sStalled->capacity * sizeof(OSMetaClass *)
@@ -463,11 +498,11 @@
bool result = false;
if (!loadLock) {
- loadLock = mutex_alloc(ETAP_IO_AHA);
- _mutex_lock(loadLock);
+ loadLock = mutex_alloc(0);
+ mutex_lock(loadLock);
}
else
- _mutex_lock(loadLock);
+ mutex_lock(loadLock);
do {
OSSet *kmodClasses;
@@ -523,6 +558,8 @@
iter->release();
}
+extern "C" kern_return_t kmod_unload_cache(void);
+
static void _OSMetaClassConsiderUnloads(thread_call_param_t p0,
thread_call_param_t p1)
{
@@ -531,11 +568,11 @@
OSCollectionIterator *kmods;
OSCollectionIterator *classes;
OSMetaClass *checkClass;
- kmod_info_t *ki;
+ kmod_info_t *ki = 0;
kern_return_t ret;
bool didUnload;
- _mutex_lock(loadLock);
+ mutex_lock(loadLock);
do {
@@ -546,12 +583,18 @@
didUnload = false;
while ( (kmodName = (OSSymbol *) kmods->getNextObject()) ) {
- ki = kmod_lookupbyname((char *)kmodName->getCStringNoCopy());
+ if (ki) {
+ kfree((vm_offset_t) ki, sizeof(kmod_info_t));
+ ki = 0;
+ }
+
+ ki = kmod_lookupbyname_locked((char *)kmodName->getCStringNoCopy());
if (!ki)
continue;
- if (ki->reference_count)
- continue;
+ if (ki->reference_count) {
+ continue;
+ }
kmodClasses = OSDynamicCast(OSSet,
sKModClassesDict->getObject(kmodName));
@@ -570,13 +613,15 @@
didUnload = true;
}
- } while (false);
+ }
kmods->release();
} while (didUnload);
mutex_unlock(loadLock);
+
+ kmod_unload_cache();
}
void OSMetaClass::considerUnloads()
@@ -584,7 +629,7 @@
static thread_call_t unloadCallout;
AbsoluteTime when;
- _mutex_lock(loadLock);
+ mutex_lock(loadLock);
if (!unloadCallout)
unloadCallout = thread_call_allocate(&_OSMetaClassConsiderUnloads, 0);
@@ -630,7 +675,7 @@
OSObject *OSMetaClass::allocClassWithName(const OSSymbol *name)
{
OSObject * result;
- _mutex_lock(loadLock);
+ mutex_lock(loadLock);
const OSMetaClass * const meta = getMetaClassWithName(name);
@@ -665,7 +710,7 @@
checkMetaCastWithName(const OSSymbol *name, const OSMetaClassBase *in)
{
OSMetaClassBase * result;
- _mutex_lock(loadLock);
+ mutex_lock(loadLock);
const OSMetaClass * const meta = getMetaClassWithName(name);
if (meta)
@@ -731,6 +776,11 @@
const OSMetaClass *OSMetaClass::getSuperClass() const
{
return superClassLink;
+}
+
+const OSSymbol *OSMetaClass::getKmodName() const
+{
+ return sSortedByClassesDict->getObject((const OSSymbol *)this);
}
unsigned int OSMetaClass::getInstanceCount() const
@@ -764,31 +814,50 @@
OSDictionary * OSMetaClass::getClassDictionary()
{
- return sAllClassesDict;
+ panic("OSMetaClass::getClassDictionary(): Obsoleted\n");
+ return 0;
}
bool OSMetaClass::serialize(OSSerialize *s) const
{
- 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;
-}
-
+ 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();
+}