fixed, cpu percent used. zero out sleeping cpus

Author: davilla

xbmc/utils/CPUInfo.cpp

@@ -749,6 +749,8 @@ bool CCPUInfo::readProcStat(unsigned long long& user, unsigned long long& nice,
       total = (double)(coreUser + coreNice + coreSystem + coreIdle + coreIO);
       if(total != 0.0f)
         iter->second.m_fPct = ((double)(coreUser + coreNice + coreSystem) * 100.0) / total;
+      else
+        iter->second.m_fPct = 0.0f;
 
       iter->second.m_user += coreUser;
       iter->second.m_nice += coreNice;
@@ -787,6 +789,14 @@ bool CCPUInfo::readProcStat(unsigned long long& user, unsigned long long& nice,
   if (num < 5)
     io = 0;
 
+  // zero out cpu percents, cpu's can idle and disappear.
+  for (int i = 0; i < m_cpuCount; i++)
+  {
+    std::map<int, CoreInfo>::iterator iter = m_cores.find(i);
+    if (iter != m_cores.end())
+      iter->second.m_fPct = 0.0;
+  }
+
   while (fgets(buf, sizeof(buf), m_fProcStat) && num >= 4)
   {
     unsigned long long coreUser, coreNice, coreSystem, coreIdle, coreIO;