Changeset 20449 in vbox for trunk/src/VBox/Runtime/r0drv

Timestamp:

Jun 9, 2009 10:23:42 PM (16 years ago)

Author:

vboxsync

Message:

FreeBSD: Implement preemption API for guest SMP and enable it (slightly tested). Add neccessary RTMP* methods in userspace for the frontends to detect the number of CPUs

File:

• trunk/src/VBox/Runtime/r0drv/freebsd/thread-r0drv-freebsd.c (modified) (1 diff)

trunk/src/VBox/Runtime/r0drv/freebsd/thread-r0drv-freebsd.c

@@ -107 +107 @@
 }
 
+RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+
+    return curthread->td_critnest == 0;
+}
+
+
+RTDECL(bool) RTThreadPreemptIsPending(RTTHREAD hThread)
+{
+    Assert(hThread == NIL_RTTHREAD);
+
+    return curthread->td_owepreempt == 1;
+}
+
+RTDECL(bool) RTThreadPreemptIsPendingTrusty(void)
+{
+    /* yes, RTThreadPreemptIsPending is reliable. */
+    return true;
+}
+
+RTDECL(void) RTThreadPreemptDisable(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+    Assert(pState->uchDummy != 42);
+    pState->uchDummy = 42;
+
+    critical_enter();
+}
+
+
+RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState)
+{
+    AssertPtr(pState);
+    Assert(pState->uchDummy == 42);
+    pState->uchDummy = 0;
+
+    critical_exit();
+}
+