xnu-3247.1.106.tar.gz

[apple/xnu.git] / iokit / IOKit / IOLib.h

diff --git a/iokit/IOKit/IOLib.h b/iokit/IOKit/IOLib.h
index a290e4d911278e1e95a3e01fd42bd91344df716f..7bf9ad8abd9d79c64b8ce29d34a602a5a70bb571 100644 (file)
--- a/iokit/IOKit/IOLib.h
+++ b/iokit/IOKit/IOLib.h
@@ -150,9 +150,10 @@ void IOFreePageable(void * address, vm_size_t size);
  * Typed memory allocation macros. Both may block.
  */
 #define IONew(type,number) \
-( ((number) != 0 && ((vm_size_t) ((sizeof(type) * (number) / (number))) != sizeof(type)) /* overflow check 21532969 */ \
-? 0 \
-: ((type*)IOMalloc(sizeof(type) * (number)))) )
+( ((number) != 0 && ((vm_size_t) ((sizeof(type) * (number) / (number))) != sizeof(type)) /* overflow check 20847256 */ \
+  ? 0 \
+  : ((type*)IOMalloc(sizeof(type) * (number)))) )
+
 #define IODelete(ptr,type,number) IOFree( (ptr) , sizeof(type) * (number) )
 
 /////////////////////////////////////////////////////////////////////////////
@@ -271,6 +272,14 @@ void IOExitThread(void) __attribute__((deprecated));
 
 void IOSleep(unsigned milliseconds);
 
+/*! @function IOSleepWithLeeway
+    @abstract Sleep the calling thread for a number of milliseconds, with a specified leeway the kernel may use for timer coalescing.
+    @discussion This function blocks the calling thread for at least the number of specified milliseconds, giving time to other processes.  The kernel may also coalesce any timers involved in the delay, using the leeway given as a guideline.
+    @param intervalMilliseconds The integer number of milliseconds to wait.
+    @param leewayMilliseconds The integer number of milliseconds to use as a timer coalescing guideline. */
+
+void IOSleepWithLeeway(unsigned intervalMilliseconds, unsigned leewayMilliseconds);
+
 /*! @function IODelay
     @abstract Spin delay for a number of microseconds.
     @discussion This function spins to delay for at least the number of specified microseconds. Since the CPU is busy spinning no time is made available to other processes; this method of delay should be used only for short periods. Also, the AbsoluteTime based APIs of kern/clock.h provide finer grained and lower cost delays.
@@ -407,6 +416,11 @@ extern mach_timespec_t IOZeroTvalspec;
 
 #endif /* __APPLE_API_OBSOLETE */
 
+#if XNU_KERNEL_PRIVATE
+vm_tag_t
+IOMemoryTag(vm_map_t map);
+#endif
+
 __END_DECLS
 
 #endif /* !__IOKIT_IOLIB_H */