add Pdh.getFormattedValue method

bindings/java/src/jni/win32/pdh.c

@@ -127,12 +127,13 @@ JNIEXPORT void SIGAR_JNI(win32_Pdh_pdhRemoveCounter)
 }
 
 JNIEXPORT jdouble SIGAR_JNI(win32_Pdh_pdhGetSingleValue)
-(JNIEnv *env, jclass cur, jlong query, jlong counter)
+(JNIEnv *env, jclass cur, jlong query, jlong counter, jboolean fmt)
 {
     HCOUNTER              h_counter      = (HCOUNTER)counter;
     HQUERY                h_query        = (HQUERY)query;
     PDH_STATUS            status;
     PDH_RAW_COUNTER raw_value;
+    PDH_FMT_COUNTERVALUE fmt_value;
     DWORD type;
 
     status = PdhCollectQueryData(h_query);
@@ -142,14 +143,27 @@ JNIEXPORT jdouble SIGAR_JNI(win32_Pdh_pdhGetSingleValue)
         return 0;
     }
 
+    if (fmt) {
+        status = PdhGetFormattedCounterValue(h_counter,
+                                             PDH_FMT_DOUBLE,
+                                             (LPDWORD)NULL,
+                                             &fmt_value);
+    }
+    else {
         status = PdhGetRawCounterValue(h_counter, &type, &raw_value);
+    }
 
     if (status != ERROR_SUCCESS) {
         win32_throw_exception(env, get_error_message(status));
         return 0;
     }
 
+    if (fmt) {
+        return fmt_value.doubleValue;
+    }
+    else {
         return (jdouble)raw_value.FirstValue;
+    }
 }
 
 JNIEXPORT jobjectArray SIGAR_JNI(win32_Pdh_pdhGetInstances)

bindings/java/src/net/hyperic/sigar/win32/Pdh.java

@@ -40,15 +40,32 @@ public class Pdh extends Win32Bindings {
         }
     }
     
+    public double getSingleValue() throws Win32Exception {
+        return getSingleValue(false);
+    }
+
     public double getSingleValue(String cp) throws Win32Exception {
+        return getSingleValue(cp, false);
+    }
+
+    public double getFormattedValue() throws Win32Exception {
+        return getSingleValue(true);
+    }
+
+    public double getFormattedValue(String cp) throws Win32Exception {
+        return getSingleValue(cp, true);
+    }
+
+    private double getSingleValue(String cp, boolean format)
+        throws Win32Exception {
         if (this.hostname != null) {
             pdhConnectMachine(this.hostname);
         }
         setCounterPath(cp);
-        return getSingleValue();
+        return getSingleValue(format);
     }
 
-    public double getSingleValue() throws Win32Exception {
+    private double getSingleValue(boolean format) throws Win32Exception {
         if (h_counter != -1l) {
             pdhRemoveCounter(h_counter);
             h_counter = -1l;
@@ -56,7 +73,7 @@ public class Pdh extends Win32Bindings {
 
         h_counter = pdhAddCounter(h_query, getCounterPath());
 
-        return pdhGetSingleValue(h_query, h_counter);
+        return pdhGetSingleValue(h_query, h_counter, format);
     }
 
     public static String[] getInstances(String cp) throws Win32Exception {
@@ -89,7 +106,8 @@ public class Pdh extends Win32Bindings {
     private static final native void pdhRemoveCounter(long counter)
         throws Win32Exception;
     private static final native double pdhGetSingleValue(long query, 
-                                                         long counter)
+                                                         long counter,
+                                                         boolean fmt)
         throws Win32Exception;
     private static final native String[] pdhGetInstances(String cp)
         throws Win32Exception;

bindings/java/src/net/hyperic/sigar/win32/test/TestPdh.java

@@ -1,21 +1,31 @@
 package net.hyperic.sigar.win32.test;
 
-import junit.framework.TestCase;
+import net.hyperic.sigar.test.SigarTestCase;
 import net.hyperic.sigar.win32.Pdh;
 
-public class TestPdh extends TestCase {
+public class TestPdh extends SigarTestCase {
 
     public TestPdh(String name) {
         super(name);
     }
 
-    public void testPdhSingleValue() throws Exception {
+    private void getValue(String key) throws Exception {
-
         Pdh pdh = new Pdh();
-        String key = "\\Memory\\Available Bytes";
-        double val = pdh.getSingleValue(key);
 
-        assertTrue(val > 0);
+        assertGtZeroTrace("raw..." + key,
+                          (long)pdh.getSingleValue(key));
+        assertGtZeroTrace("fmt..." + key,
+                          (long)pdh.getFormattedValue(key));
+    }
+
+    public void testGetValue() throws Exception {
+        String[] keys = {
+            "\\Memory\\Available Bytes",
+            "\\Memory\\Pages/sec",
+        };
+        for (int i=0; i<keys.length; i++) {
+            getValue(keys[i]);
+        }
     }
 
     public void testPdh () throws Exception {