xnu-3247.1.106.tar.gz

[apple/xnu.git] / iokit / Kernel / IOCommandQueue.cpp

diff --git a/iokit/Kernel/IOCommandQueue.cpp b/iokit/Kernel/IOCommandQueue.cpp
index d528483b8e4f8e4de82cc4c199530bd4689aeb3a..3a184bf945280d9765360a50efbdfeadc8ad435c 100644 (file)
--- a/iokit/Kernel/IOCommandQueue.cpp
+++ b/iokit/Kernel/IOCommandQueue.cpp
@@ -1,45 +1,55 @@
 /*
- * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2010 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_OSREFERENCE_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.  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, 
- * 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 
+ * 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.
+ * 
+ * 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,
+ * 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.
- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
-/*
-Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
 
-HISTORY
-    1998-7-13  Godfrey van der Linden(gvdl)
-        Created.
-]*/
+#if !defined(__LP64__)
+
 #include <IOKit/IOCommandQueue.h>
 #include <IOKit/IOWorkLoop.h>
 #include <IOKit/IOTimeStamp.h>
+#include <IOKit/IOKitDebug.h>
 
 #include <mach/sync_policy.h>
 
+#if IOKITSTATS
+
+#define IOStatisticsInitializeCounter() \
+       IOStatistics::setCounterType(reserved->counter, kIOStatisticsCommandQueueCounter)
+
+#define IOStatisticsActionCall() \
+       IOStatistics::countCommandQueueActionCall(reserved->counter)
+
+#else
+
+#define IOStatisticsInitializeCounter()
+#define IOStatisticsActionCall()
+
+#endif /* IOKITSTATS */
+
 #define NUM_FIELDS_IN_COMMAND  4
 typedef struct commandEntryTag {
     void *f[NUM_FIELDS_IN_COMMAND];
@@ -91,6 +101,8 @@ bool IOCommandQueue::init(OSObject *inOwner,
 
     producerIndex = consumerIndex = 0;
 
+    IOStatisticsInitializeCounter();
+
     return true;
 }
 
@@ -134,7 +146,8 @@ void IOCommandQueue::free()
 
 bool IOCommandQueue::checkForWork()
 {
-    void *field0, *field1, *field2, *field3;
+    void       *field0, *field1, *field2, *field3;
+       bool    trace = ( gIOKitTrace & kIOTraceCommandGates ) ? true : false;
 
     if (!enabled || consumerIndex == producerIndex)
         return false;
@@ -151,11 +164,17 @@ bool IOCommandQueue::checkForWork()
     if (++consumerIndex >= size)
         consumerIndex = 0;
 
-    IOTimeStampConstant(IODBG_CMDQ(IOCMDQ_ACTION),
-                       (unsigned int) action, (unsigned int) owner);
-
+       if (trace)
+               IOTimeStampStartConstant(IODBG_CMDQ(IOCMDQ_ACTION),
+                                                                (uintptr_t) action, (uintptr_t) owner);
+       
+    IOStatisticsActionCall();
     (*(IOCommandQueueAction) action)(owner, field0, field1, field2, field3);
-
+       
+       if (trace)
+               IOTimeStampEndConstant(IODBG_CMDQ(IOCMDQ_ACTION),
+                                                          (uintptr_t) action, (uintptr_t) owner);
+       
     return (consumerIndex != producerIndex);
 }
 
@@ -274,3 +293,5 @@ int IOCommandQueue::performAndFlush(OSObject *target,
 
     return numEntries;
 }
+
+#endif /* !defined(__LP64__) */