Changeset 13254 in vbox for trunk/src/VBox/Runtime/r0drv/nt

Timestamp:

Oct 14, 2008 12:35:50 PM (17 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

37865

Message:

IPRT: Added RTThreadPreemptIsEnabled, RTThreadPreemptDisable and RTThreadPreemptRestore. Made the logger check that preemption is enabled before trying to take the semaphore on Solaris and Windows.

File:

• trunk/src/VBox/Runtime/r0drv/nt/thread-r0drv-nt.cpp (modified) (1 diff)

trunk/src/VBox/Runtime/r0drv/nt/thread-r0drv-nt.cpp

@@ -72 +72 @@
 
 
+RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+    KIRQL Irql = KeGetCurrentIrql();
+    return Irql <= APC_LEVEL;
+}
+
+
+RTDECL(void) RTThreadPreemptDisable(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+    Assert(pState->uchOldIrql == 255);
+    Assert(KeGetCurrentIrql() <= DISPATCH_LEVEL);
+
+    KeRaiseIrql(DISPATCH_LEVEL, &pState->uchOldIrql);
+}
+
+
+RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+
+    KeLowerIrql(pState->uchOldIrql);
+    pState->uchOldIrql = 255;
+}
+