Changeset 72639 in vbox for trunk/include

Timestamp:

Jun 21, 2018 1:51:44 PM (6 years ago)

Author:

vboxsync

Message:

IPRT,VMM: Try use KeShouldYieldProcessor to implement RTThreadPreemptIsPending on Windows. That'll save us a lot of pain with changing _KPRCB structures. bugref:5102

Location:

trunk/include/iprt

Files:

• nt/nt.h (modified) (1 diff)
• thread.h (modified) (1 diff)

trunk/include/iprt/nt/nt.h

@@ -2667 +2667 @@
 typedef  VOID    (NTAPI *PFNKEDEREGISTERPROCESSORCHANGECALLBACK)(PVOID pvCallback);
 typedef  NTSTATUS (NTAPI *PFNKESETTARGETPROCESSORDPCEX)(KDPC *pDpc, PROCESSOR_NUMBER *pProcNumber);
+typedef  LOGICAL  (NTAPI *PFNKESHOULDYIELDPROCESSOR)(void);
 
 NTSYSAPI BOOLEAN  NTAPI ObFindHandleForObject(PEPROCESS pProcess, PVOID pvObject, POBJECT_TYPE pObjectType,

trunk/include/iprt/thread.h

@@ -527 +527 @@
  *
  * @returns true if pending, false if not.
- * @param       hThread         Must be NIL_RTTHREAD for now.
+ * @param   hThread         Must be NIL_RTTHREAD for now.
+ *
+ * @note    If called with interrupts disabled, the NT kernel may temporarily
+ *          re-enable them while checking.
  */
 RTDECL(bool) RTThreadPreemptIsPending(RTTHREAD hThread);