xnu-1699.24.23.tar.gz

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

diff --git a/iokit/Kernel/IOTimerEventSource.cpp b/iokit/Kernel/IOTimerEventSource.cpp
index 112deeee73e2d73f0a0045f1ce5ec1aa339c1a5a..c71feccf0ca8671127a9c85afa0505932709d023 100644 (file)
--- a/iokit/Kernel/IOTimerEventSource.cpp
+++ b/iokit/Kernel/IOTimerEventSource.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2000, 2009-2010 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -53,13 +53,42 @@ OSMetaClassDefineReservedUnused(IOTimerEventSource, 5);
 OSMetaClassDefineReservedUnused(IOTimerEventSource, 6);
 OSMetaClassDefineReservedUnused(IOTimerEventSource, 7);
 
+#if IOKITSTATS
+
+#define IOStatisticsInitializeCounter() \
+do { \
+       IOStatistics::setCounterType(IOEventSource::reserved->counter, kIOStatisticsTimerEventSourceCounter); \
+} while (0)
+
+#define IOStatisticsOpenGate() \
+do { \
+       IOStatistics::countOpenGate(me->IOEventSource::reserved->counter); \
+} while (0)
+
+#define IOStatisticsCloseGate() \
+do { \
+       IOStatistics::countCloseGate(me->IOEventSource::reserved->counter); \
+} while (0)
+
+#define IOStatisticsTimeout() \
+do { \
+       IOStatistics::countTimerTimeout(me->IOEventSource::reserved->counter); \
+} while (0)
+
+#else
+
+#define IOStatisticsInitializeCounter()
+#define IOStatisticsOpenGate()
+#define IOStatisticsCloseGate()
+#define IOStatisticsTimeout()
+
+#endif /* IOKITSTATS */
+
 // 
 // reserved != 0 means IOTimerEventSource::timeoutAndRelease is being used,
 // not a subclassed implementation. 
 //
 
-bool IOTimerEventSource::checkForWork() { return false; }
-
 // Timeout handler function. This function is called by the kernel when
 // the timeout interval expires.
 //
@@ -67,6 +96,8 @@ void IOTimerEventSource::timeout(void *self)
 {
     IOTimerEventSource *me = (IOTimerEventSource *) self;
 
+    IOStatisticsTimeout();
+
     if (me->enabled && me->action)
     {
         IOWorkLoop *
@@ -75,6 +106,7 @@ void IOTimerEventSource::timeout(void *self)
         {
             Action doit;
             wl->closeGate();
+            IOStatisticsCloseGate();
             doit = (Action) me->action;
             if (doit && me->enabled && AbsoluteTime_to_scalar(&me->abstime))
             {
@@ -82,7 +114,7 @@ void IOTimerEventSource::timeout(void *self)
                
                if (trace)
                        IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
-                                    (uintptr_t) doit, (uintptr_t) me->owner);
+                                                                                        (uintptr_t) doit, (uintptr_t) me->owner);
                                
                 (*doit)(me->owner, me);
                 
@@ -90,6 +122,7 @@ void IOTimerEventSource::timeout(void *self)
                        IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
                                                                                   (uintptr_t) doit, (uintptr_t) me->owner);
             }
+            IOStatisticsOpenGate();
             wl->openGate();
         }
     }
@@ -102,6 +135,8 @@ void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
           must be cast to "long" before, in order to tell GCC we're not truncating a pointer. */
        SInt32 count = (SInt32) (long) c;
 
+    IOStatisticsTimeout();
+       
     if (me->enabled && me->action)
     {
         IOWorkLoop *
@@ -110,6 +145,7 @@ void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
         {
             Action doit;
             wl->closeGate();
+            IOStatisticsCloseGate();
             doit = (Action) me->action;
             if (doit && (me->reserved->calloutGeneration == count))
             {
@@ -117,7 +153,7 @@ void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
                
                if (trace)
                        IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
-                                    (uintptr_t) doit, (uintptr_t) me->owner);
+                                                                                        (uintptr_t) doit, (uintptr_t) me->owner);
                                
                 (*doit)(me->owner, me);
                 
@@ -125,6 +161,7 @@ void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
                        IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
                                                                                   (uintptr_t) doit, (uintptr_t) me->owner);
             }
+            IOStatisticsOpenGate();
             wl->openGate();
         }
     }
@@ -151,6 +188,8 @@ bool IOTimerEventSource::init(OSObject *inOwner, Action inAction)
     if (!calloutEntry)
         return false;
 
+    IOStatisticsInitializeCounter();
+
     return true;
 }