Changeset 21536 in vbox for trunk/include

Timestamp:

Jul 13, 2009 2:49:39 PM (15 years ago)

Author:

vboxsync

Message:

iprt/thread.h: Redefined RTThreadPreemptIsEnabled for systems without preemption (we keep count ourselves). Added RTThreadPreemptIsPossible and RTThreadIsInInterrupt. Fixed RTThreadPreemptIsEnabled on FreeBSD and Solaris/vbi.

File:

• trunk/include/iprt/thread.h (modified) (3 diffs)

trunk/include/iprt/thread.h

@@ -432 +432 @@
  * Check if preemption is currently enabled or not for the current thread.
  *
+ * @note    This may return true even on systems where preemption isn't
+ *          possible. In that case, it means no call to RTThreadPreemptDisable
+ *          has been made and interrupts are still enabled.
+ *
  * @returns true if preemtion is enabled, false if preemetion is disabled.
- * @param       hThread         Must be NIL_RTTHREAD for now.
+ * @param   hThread             Must be NIL_RTTHREAD for now.
  */
 RTDECL(bool) RTThreadPreemptIsEnabled(RTTHREAD hThread);
@@ -451 +455 @@
  * Is RTThreadPreemptIsPending reliable?
  *
- * @returns true if pending, false if not.
+ * @returns true if reliable, false if not.
  */
 RTDECL(bool) RTThreadPreemptIsPendingTrusty(void);
+
+/**
+ * Is preemption possible on this system.
+ *
+ * @returns true if possible, false if not.
+ */
+RTDECL(bool) RTThreadPreemptIsPossible(void);
 
 /**
@@ -495 +506 @@
 RTDECL(void) RTThreadPreemptRestore(PRTTHREADPREEMPTSTATE pState);
 
+/**
+ * Check if the thread is executing in interrupt context.
+ *
+ * @returns true if in interrupt context, false if not.
+ * @param       hThread         Must be NIL_RTTHREAD for now.
+ */
+RTDECL(bool) RTThreadIsInInterrupt(RTTHREAD hThread);
+
 #endif /* IN_RING0 */