Changeset 9622 in vbox

Timestamp:

Jun 11, 2008 5:11:39 PM (17 years ago)

Author:

vboxsync

Message:

Forgot this - added RTCpuLastIndex.

File:

• trunk/include/iprt/cpuset.h (modified) (2 diffs)

trunk/include/iprt/cpuset.h

@@ -189 +189 @@
  * @param   pSet    Pointer to the set.
  */
-DECLINLINE(RTCPUID) RTCpuSetCount(PRTCPUSET pSet)
-{
-    RTCPUID cCpus = 0;
+DECLINLINE(int) RTCpuSetCount(PCRTCPUSET pSet)
+{
+    int     cCpus = 0;
     RTCPUID iCpu = 64;
     while (iCpu-- > 0)
@@ -200 +200 @@
 
 
+/**
+ * Get the highest set index.
+ *
+ * @returns The higest set index, -1 if all bits are clear.
+ * @param   pSet    Pointer to the set.
+ */
+DECLINLINE(int) RTCpuLastIndex(PCRTCPUSET pSet)
+{
+    /* There are more efficient ways to do this in asm.h... */
+    int iCpu = RTCPUSET_MAX_CPUS;
+    while (iCpu-- > 0)
+        if (*pSet & RT_BIT_64(iCpu))
+            return iCpu;
+    return iCpu;
+}
+
+
 /** @} */