Changeset 31356 in vbox for trunk/src/VBox/VMM/VMMAll

Timestamp:

Aug 4, 2010 12:59:29 PM (15 years ago)

Author:

vboxsync

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

64405

Message:

Search first by host cpu id (most common case) and then by native thread id (page fusion case).

File:

• trunk/src/VBox/VMM/VMMAll/VMMAll.cpp (modified) (3 diffs)

trunk/src/VBox/VMM/VMMAll/VMMAll.cpp

@@ -27 +27 @@
 #include <VBox/param.h>
 #include <iprt/thread.h>
+#include <iprt/mp.h>
 
 
@@ -59 +60 @@
     if (pVM->cCpus == 1)
         return 0;
+
+    /* Search first by host cpu id (most common case)
+     * and then by native thread id (page fusion case).
+     */
+    /* RTMpCpuId had better be cheap. */ 
+    RTCPUID idHostCpu = RTMpCpuId(); 
+
+    /** @todo optimize for large number of VCPUs when that becomes more common. */
+    for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
+    {
+        PVMCPU pVCpu = &pVM->aCpus[idCpu];
+
+        if (pVCpu->idHostCpu == idHostCpu)
+            return pVCpu->idCpu;
+    }
 
     /* RTThreadGetNativeSelf had better be cheap. */
@@ -99 +115 @@
         return &pVM->aCpus[0];
 
+    /* Search first by host cpu id (most common case)
+     * and then by native thread id (page fusion case).
+     */
+
+    /* RTMpCpuId had better be cheap. */ 
+    RTCPUID idHostCpu = RTMpCpuId(); 
+
+    /** @todo optimize for large number of VCPUs when that becomes more common. */
+    for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++)
+    {
+        PVMCPU pVCpu = &pVM->aCpus[idCpu];
+
+        if (pVCpu->idHostCpu == idHostCpu)
+            return pVCpu;
+    }
+
     /* RTThreadGetNativeSelf had better be cheap. */
     RTNATIVETHREAD hThread = RTThreadNativeSelf();