xnu-7195.50.7.100.1.tar.gz

[apple/xnu.git] / libkern / c++ / OSCollectionIterator.cpp

diff --git a/libkern/c++/OSCollectionIterator.cpp b/libkern/c++/OSCollectionIterator.cpp
index 67054d76e354d15bb0ff6a60521307f8ee0db417..dbbe7fc447583afe59c894c8a0e8f6c6a8240ff6 100644 (file)
--- a/libkern/c++/OSCollectionIterator.cpp
+++ b/libkern/c++/OSCollectionIterator.cpp
@@ -1,15 +1,20 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
+ * @APPLE_OSREFERENCE_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. 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. 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.
+ *
  * The 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,
@@ -17,116 +22,113 @@
  * 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.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* IOArray.h created by rsulack on Thu 11-Sep-1997 */
 
-#include <libkern/c++/OSCollectionIterator.h>
-#include <libkern/c++/OSCollection.h>
+#define IOKIT_ENABLE_SHARED_PTR
+
 #include <libkern/c++/OSArray.h>
+#include <libkern/c++/OSCollection.h>
+#include <libkern/c++/OSCollectionIterator.h>
 #include <libkern/c++/OSLib.h>
+#include <libkern/c++/OSSharedPtr.h>
 
 #define super OSIterator
 
 OSDefineMetaClassAndStructors(OSCollectionIterator, OSIterator)
 
-#if OSALLOCDEBUG
-extern "C" {
-    extern int debug_container_malloc_size;
-};
-#define ACCUMSIZE(s) do { debug_container_malloc_size += (s); } while(0)
-#else
-#define ACCUMSIZE(s)
-#endif
-
-bool OSCollectionIterator::initWithCollection(const OSCollection *inColl)
+bool
+OSCollectionIterator::initWithCollection(const OSCollection *inColl)
 {
-    if ( !super::init() || !inColl)
-        return false;
+       if (!super::init() || !inColl) {
+               return false;
+       }
 
-    inColl->retain();
-    collection = inColl;
-    collIterator = 0;
-    initialUpdateStamp = 0;
-    valid = false;
+       collection.reset(inColl, OSRetain);
+       collIterator = NULL;
+       initialUpdateStamp = 0;
+       valid = false;
 
-    return this;
+       return true;
 }
 
-OSCollectionIterator *
+OSSharedPtr<OSCollectionIterator>
 OSCollectionIterator::withCollection(const OSCollection *inColl)
 {
+       OSSharedPtr<OSCollectionIterator> me = OSMakeShared<OSCollectionIterator>();
 
-    OSCollectionIterator *me = new OSCollectionIterator;
-
-    if (me && !me->initWithCollection(inColl)) {
-        me->release();
-        return 0;
-    }
-
-    return me;
-}
+       if (me && !me->initWithCollection(inColl)) {
+               return nullptr;
+       }
 
-void OSCollectionIterator::free()
-{
-    if (collIterator) {
-        kfree((vm_offset_t)collIterator, collection->iteratorSize());
-       ACCUMSIZE(-(collection->iteratorSize()));
-        collIterator = 0;
-    }
-
-    if (collection) {
-        collection->release();
-        collection = 0;
-    }
-
-    super::free();
+       return me;
 }
 
-void OSCollectionIterator::reset()
+void
+OSCollectionIterator::free()
 {
-    valid = false;
+       if (collIterator) {
+               kfree(collIterator, collection->iteratorSize());
+               OSCONTAINER_ACCUMSIZE(-((size_t) collection->iteratorSize()));
+               collIterator = NULL;
+       }
 
-    if (!collIterator) {
-        collIterator = (void *)kalloc(collection->iteratorSize());
-       ACCUMSIZE(collection->iteratorSize());
-        if (!collIterator)
-            return;
-    }
+       collection.reset();
 
-    if (!collection->initIterator(collIterator))
-        return;
+       super::free();
+}
 
-    initialUpdateStamp = collection->updateStamp;
-    valid = true;
+void
+OSCollectionIterator::reset()
+{
+       valid = false;
+
+       if (!collIterator) {
+               collIterator = (void *)kalloc_container(collection->iteratorSize());
+               OSCONTAINER_ACCUMSIZE(collection->iteratorSize());
+               if (!collIterator) {
+                       return;
+               }
+       }
+
+       if (!collection->initIterator(collIterator)) {
+               return;
+       }
+
+       initialUpdateStamp = collection->updateStamp;
+       valid = true;
 }
 
-bool OSCollectionIterator::isValid()
+bool
+OSCollectionIterator::isValid()
 {
-    if (!collIterator) {
-        collIterator = (void *)kalloc(collection->iteratorSize());
-       ACCUMSIZE(collection->iteratorSize());
-        if (!collection->initIterator(collIterator))
-            return false;
-        initialUpdateStamp = collection->updateStamp;
-        valid = true;
-    }
-    else if (!valid || collection->updateStamp != initialUpdateStamp)
-        return false;
-    
-    return true;
+       if (!collIterator) {
+               collIterator = (void *)kalloc_container(collection->iteratorSize());
+               OSCONTAINER_ACCUMSIZE(collection->iteratorSize());
+               if (!collection->initIterator(collIterator)) {
+                       return false;
+               }
+               initialUpdateStamp = collection->updateStamp;
+               valid = true;
+       } else if (!valid || collection->updateStamp != initialUpdateStamp) {
+               return false;
+       }
+
+       return true;
 }
 
-OSObject *OSCollectionIterator::getNextObject()
+OSObject *
+OSCollectionIterator::getNextObject()
 {
-    OSObject *retObj;
-    bool retVal;
+       OSObject *retObj;
+       bool retVal;
 
-    if (!isValid())
-        return 0;
+       if (!isValid()) {
+               return NULL;
+       }
 
-    retVal = collection->getNextObjectForIterator(collIterator, &retObj);
-    return (retVal)? retObj : 0;
+       retVal = collection->getNextObjectForIterator(collIterator, &retObj);
+       return (retVal)? retObj : NULL;
 }
-