xnu-2782.20.48.tar.gz

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

diff --git a/iokit/Kernel/IOTimerEventSource.cpp b/iokit/Kernel/IOTimerEventSource.cpp
index 112deeee73e2d73f0a0045f1ce5ec1aa339c1a5a..df939da91c0fe02d1ef4eaf4804f99cd78c0d0ee 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@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -41,6 +41,9 @@ __END_DECLS
 
 #include <IOKit/IOTimeStamp.h>
 #include <IOKit/IOKitDebug.h>
 
 #include <IOKit/IOTimeStamp.h>
 #include <IOKit/IOKitDebug.h>

+#if CONFIG_DTRACE
+#include <mach/sdt.h>
+#endif

 
 #define super IOEventSource
 OSDefineMetaClassAndStructors(IOTimerEventSource, IOEventSource)
 
 #define super IOEventSource
 OSDefineMetaClassAndStructors(IOTimerEventSource, IOEventSource)


@@ -53,13 +56,42 @@ OSMetaClassDefineReservedUnused(IOTimerEventSource, 5);
 OSMetaClassDefineReservedUnused(IOTimerEventSource, 6);
 OSMetaClassDefineReservedUnused(IOTimerEventSource, 7);
 
 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. 
 //
 
 // 
 // 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.
 //
 // Timeout handler function. This function is called by the kernel when
 // the timeout interval expires.
 //


@@ -67,6 +99,8 @@ void IOTimerEventSource::timeout(void *self)
 {
     IOTimerEventSource *me = (IOTimerEventSource *) self;
 
 {
     IOTimerEventSource *me = (IOTimerEventSource *) self;
 

+    IOStatisticsTimeout();
+

     if (me->enabled && me->action)
     {
         IOWorkLoop *
     if (me->enabled && me->action)
     {
         IOWorkLoop *


@@ -75,6 +109,7 @@ void IOTimerEventSource::timeout(void *self)
         {
             Action doit;
             wl->closeGate();
         {
             Action doit;
             wl->closeGate();

+            IOStatisticsCloseGate();

             doit = (Action) me->action;
             if (doit && me->enabled && AbsoluteTime_to_scalar(&me->abstime))
             {
             doit = (Action) me->action;
             if (doit && me->enabled && AbsoluteTime_to_scalar(&me->abstime))
             {


@@ -82,14 +117,18 @@ void IOTimerEventSource::timeout(void *self)
                
                if (trace)
                        IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
                
                if (trace)
                        IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),

-                                    (uintptr_t) doit, (uintptr_t) me->owner);
+                                                                                        VM_KERNEL_UNSLIDE(doit), (uintptr_t) me->owner);

                                
                 (*doit)(me->owner, me);
                                
                 (*doit)(me->owner, me);

+#if CONFIG_DTRACE
+               DTRACE_TMR3(iotescallout__expire, Action, doit, OSObject, me->owner, void, me->workLoop);
+#endif

                 
                                if (trace)
                        IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
                 
                                if (trace)
                        IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),

-                                                                                  (uintptr_t) doit, (uintptr_t) me->owner);
+                                                                                  VM_KERNEL_UNSLIDE(doit), (uintptr_t) me->owner);

             }
             }

+            IOStatisticsOpenGate();

             wl->openGate();
         }
     }
             wl->openGate();
         }
     }


@@ -102,6 +141,8 @@ 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;
 
           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 *
     if (me->enabled && me->action)
     {
         IOWorkLoop *


@@ -110,6 +151,7 @@ void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
         {
             Action doit;
             wl->closeGate();
         {
             Action doit;
             wl->closeGate();

+            IOStatisticsCloseGate();

             doit = (Action) me->action;
             if (doit && (me->reserved->calloutGeneration == count))
             {
             doit = (Action) me->action;
             if (doit && (me->reserved->calloutGeneration == count))
             {


@@ -117,14 +159,18 @@ void IOTimerEventSource::timeoutAndRelease(void * self, void * c)
                
                if (trace)
                        IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),
                
                if (trace)
                        IOTimeStampStartConstant(IODBG_TIMES(IOTIMES_ACTION),

-                                    (uintptr_t) doit, (uintptr_t) me->owner);
+                                                                                        VM_KERNEL_UNSLIDE(doit), (uintptr_t) me->owner);

                                
                 (*doit)(me->owner, me);
                                
                 (*doit)(me->owner, me);

+#if CONFIG_DTRACE
+               DTRACE_TMR3(iotescallout__expire, Action, doit, OSObject, me->owner, void, me->workLoop);
+#endif

                 
                                if (trace)
                        IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),
                 
                                if (trace)
                        IOTimeStampEndConstant(IODBG_TIMES(IOTIMES_ACTION),

-                                                                                  (uintptr_t) doit, (uintptr_t) me->owner);
+                                                                                  VM_KERNEL_UNSLIDE(doit), (uintptr_t) me->owner);

             }
             }

+            IOStatisticsOpenGate();

             wl->openGate();
         }
     }
             wl->openGate();
         }
     }


@@ -151,6 +197,8 @@ bool IOTimerEventSource::init(OSObject *inOwner, Action inAction)
     if (!calloutEntry)
         return false;
 
     if (!calloutEntry)
         return false;
 

+    IOStatisticsInitializeCounter();
+

     return true;
 }
 
     return true;
 }
 


@@ -321,7 +369,7 @@ IOReturn IOTimerEventSource::wakeAtTime(AbsoluteTime inAbstime)
             reserved->workLoop = workLoop;
             reserved->calloutGeneration++;
             if (thread_call_enter1_delayed((thread_call_t) calloutEntry, 
             reserved->workLoop = workLoop;
             reserved->calloutGeneration++;
             if (thread_call_enter1_delayed((thread_call_t) calloutEntry, 

-                    (void *) reserved->calloutGeneration, inAbstime))
+                    (void *)(uintptr_t) reserved->calloutGeneration, inAbstime))

             {
                 release();
                 workLoop->release();
             {
                 release();
                 workLoop->release();