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--- xnu/xnu-1699.24.23/libkern/c++/OSObject.cpp
+++ xnu/xnu-517/libkern/c++/OSObject.cpp
@@ -1,19 +1,16 @@
/*
- * Copyright (c) 2000 Apple Inc. All rights reserved.
+ * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
* 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.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 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
@@ -23,22 +20,17 @@
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_LICENSE_HEADER_END@
*/
/* OSObject.cpp created by gvdl on Fri 1998-11-17 */
#include <libkern/c++/OSObject.h>
-#include <libkern/c++/OSArray.h>
#include <libkern/c++/OSSerialize.h>
#include <libkern/c++/OSLib.h>
-#include <libkern/OSDebug.h>
#include <libkern/c++/OSCPPDebug.h>
-#include <IOKit/IOKitDebug.h>
#include <libkern/OSAtomic.h>
#include <libkern/c++/OSCollection.h>
-
-#include <kern/queue.h>
__BEGIN_DECLS
int debug_ivars_size;
@@ -86,6 +78,22 @@
OSMetaClassDefineReservedUnused(OSObject, 13);
OSMetaClassDefineReservedUnused(OSObject, 14);
OSMetaClassDefineReservedUnused(OSObject, 15);
+OSMetaClassDefineReservedUnused(OSObject, 16);
+OSMetaClassDefineReservedUnused(OSObject, 17);
+OSMetaClassDefineReservedUnused(OSObject, 18);
+OSMetaClassDefineReservedUnused(OSObject, 19);
+OSMetaClassDefineReservedUnused(OSObject, 20);
+OSMetaClassDefineReservedUnused(OSObject, 21);
+OSMetaClassDefineReservedUnused(OSObject, 22);
+OSMetaClassDefineReservedUnused(OSObject, 23);
+OSMetaClassDefineReservedUnused(OSObject, 24);
+OSMetaClassDefineReservedUnused(OSObject, 25);
+OSMetaClassDefineReservedUnused(OSObject, 26);
+OSMetaClassDefineReservedUnused(OSObject, 27);
+OSMetaClassDefineReservedUnused(OSObject, 28);
+OSMetaClassDefineReservedUnused(OSObject, 29);
+OSMetaClassDefineReservedUnused(OSObject, 30);
+OSMetaClassDefineReservedUnused(OSObject, 31);
static const char *getClassName(const OSObject *obj)
{
@@ -96,6 +104,12 @@
bool OSObject::init()
{ return true; }
+#if (!__ppc__) || (__GNUC__ < 3)
+
+// Implemented in assembler in post gcc 3.x systems as we have a problem
+// where the destructor in gcc2.95 gets 2 arguments. The second argument
+// appears to be a flag argument. I have copied the assembler from Puma xnu
+// to OSRuntimeSupport.c So for 2.95 builds use the C
void OSObject::free()
{
const OSMetaClass *meta = getMetaClass();
@@ -104,6 +118,7 @@
meta->instanceDestructed();
delete this;
}
+#endif /* (!__ppc__) || (__GNUC__ < 3) */
int OSObject::getRetainCount() const
{
@@ -139,7 +154,7 @@
#if !DEBUG
break; // Break out of update loop which pegs the reference
-#else /* DEBUG */
+#else DEBUG
// @@@ gvdl: eventually need to make this panic optional
// based on a boot argument i.e. debug= boot flag
msg = "About to wrap the reference count, reference leak?";
@@ -149,7 +164,7 @@
}
newCount = origCount + inc;
- } while (!OSCompareAndSwap(origCount, newCount, const_cast<UInt32 *>(countP)));
+ } while (!OSCompareAndSwap(origCount, newCount, (UInt32 *) countP));
}
void OSObject::taggedRelease(const void *tag) const
@@ -186,7 +201,7 @@
#if !DEBUG
return; // return out of function which pegs the reference
-#else /* DEBUG */
+#else DEBUG
// @@@ gvdl: eventually need to make this panic optional
// based on a boot argument i.e. debug= boot flag
panic("OSObject::refcount: %s",
@@ -200,28 +215,23 @@
else
newCount = actualCount;
- } while (!OSCompareAndSwap(origCount, newCount, const_cast<UInt32 *>(countP)));
+ } while (!OSCompareAndSwap(origCount, newCount, (UInt32 *) countP));
//
// This panic means that we have just attempted to release an object
- // whose retain count has gone to less than the number of collections
+ // who's retain count has gone to less than the number of collections
// it is a member off. Take a panic immediately.
- // In fact the panic MAY not be a registry corruption but it is
+ // In Fact the panic MAY not be a registry corruption but it is
// ALWAYS the wrong thing to do. I call it a registry corruption 'cause
// the registry is the biggest single use of a network of collections.
//
-// xxx - this error message is overly-specific;
-// xxx - any code in the kernel could trip this,
-// xxx - and it applies as noted to all collections, not just the registry
- if ((UInt16) actualCount < (actualCount >> 16)) {
- panic("A kext releasing a(n) %s has corrupted the registry.",
- getClassName(this));
- }
+ if ((UInt16) actualCount < (actualCount >> 16))
+ panic("A driver releasing a(n) %s has corrupted the registry\n",
+ getClassName(this));
// Check for a 'free' condition and that if we are first through
- if (newCount == 0xffff) {
- (const_cast<OSObject *>(this))->free();
- }
+ if (newCount == 0xffff)
+ ((OSObject *) this)->free();
}
void OSObject::release() const
@@ -251,91 +261,20 @@
return s->addXMLEndTag("string");
}
-
-thread_t gOSObjectTrackThread;
-
-queue_head_t gOSObjectTrackList =
- { (queue_t) &gOSObjectTrackList, (queue_t) &gOSObjectTrackList };
-
-lck_spin_t gOSObjectTrackLock;
-
-OSArray * OSFlushObjectTrackList(void)
-{
- OSArray * array;
- queue_entry_t next;
-
- array = OSArray::withCapacity(16);
-
- lck_spin_lock(&gOSObjectTrackLock);
- while (!queue_empty(&gOSObjectTrackList))
- {
- next = queue_first(&gOSObjectTrackList);
- remque(next);
- lck_spin_unlock(&gOSObjectTrackLock);
- array->setObject((OSObject *) (next + 1));
- lck_spin_lock(&gOSObjectTrackLock);
- }
- lck_spin_unlock(&gOSObjectTrackLock);
-
- return (array);
-}
-
-struct OSObjectTracking
-{
- queue_chain_t link;
- void * bt[14];
-};
-
void *OSObject::operator new(size_t size)
{
- size_t tracking = (gIOKitDebug & kOSTraceObjectAlloc)
- ? sizeof(OSObjectTracking) : 0;
- OSObjectTracking * mem = (OSObjectTracking *) kalloc(size + tracking);
-
+ void *mem = (void *) kalloc(size);
assert(mem);
-
- if (tracking)
- {
- if ((((thread_t) 1) == gOSObjectTrackThread) || (current_thread() == gOSObjectTrackThread))
- {
- (void) OSBacktrace(&mem->bt[0], sizeof(mem->bt) / sizeof(mem->bt[0]));
- lck_spin_lock(&gOSObjectTrackLock);
- enqueue_tail(&gOSObjectTrackList, &mem->link);
- lck_spin_unlock(&gOSObjectTrackLock);
- }
- else
- mem->link.next = 0;
- mem++;
- }
-
bzero(mem, size);
ACCUMSIZE(size);
- return (void *) mem;
-}
-
-void OSObject::operator delete(void *_mem, size_t size)
-{
- size_t tracking = (gIOKitDebug & kOSTraceObjectAlloc)
- ? sizeof(OSObjectTracking) : 0;
- OSObjectTracking * mem = (OSObjectTracking *) _mem;
-
- if (!mem)
- return;
-
- if (tracking)
- {
- mem--;
- if (mem->link.next)
- {
- lck_spin_lock(&gOSObjectTrackLock);
- remque(&mem->link);
- lck_spin_unlock(&gOSObjectTrackLock);
- }
- }
-
- kfree(mem, size + tracking);
+ return mem;
+}
+
+void OSObject::operator delete(void *mem, size_t size)
+{
+ kfree((vm_offset_t) mem, size);
ACCUMSIZE(-size);
}