- add checkAlarms function

- this function will be used to determine wether expiration alarms are active. If qemu dies or terminates unexpectly, this function will check if it was before an timeout. In that case alarms will be active. Note: if qemu is killed purposely, OsSupport::cancelAlarms must be called to prevent automatic termination of sysreg process

svn path=/trunk/; revision=29509

reactos/tools/sysreg/os_support.cpp

@@ -15,7 +15,7 @@ namespace System_
     OsSupport::TimeEntryVector OsSupport::s_Entries;
 
     //int gettimeofday(struct timeval *tv, void * tz);
-
+//------------------------------------------------------------------------
     void OsSupport::checkAlarms()
     {
         struct timeval tm;
@@ -44,7 +44,11 @@ namespace System_
         }
 #endif
     }
-
+    bool OsSupport::hasAlarms ()
+    {
+        return (s_Entries.size () != 0);
+    }
+//------------------------------------------------------------------------
     void OsSupport::cancelAlarms()
     {
 
@@ -284,6 +288,18 @@ __inline int gettimeofday(struct timeval *tv, struct timezone *tz)
         {
             OsSupport::checkAlarms();
         }
+        else if (sig == SIGCHLD)
+        {
+            if (OsSupport::hasAlarms())
+            {
+                ///
+                /// FIXME
+                ///
+                /// there are expiriation alarms active and a child died unexpectly
+                /// lets commit suicide
+                exit(-2);
+            }
+        }
     }
     void OsSupport::setAlarm(long secs, OsSupport::ProcessID pid)
     {

reactos/tools/sysreg/os_support.h

@@ -120,6 +120,13 @@ namespace System_
 
     static void checkAlarms();
 
+///---------------------------------------------------------------------------------------
+///
+/// hasAlarms
+///
+/// Description: this function checks wether there are alarms set active
+
+    static bool hasAlarms();
 
 	protected:
 //---------------------------------------------------------------------------------------