add native version/build date

bindings/java/src/jni/javasigar.c

@@ -197,6 +197,20 @@ JNIEXPORT jstring SIGAR_JNI(Sigar_formatSize)
     return JENV->NewStringUTF(env, buf);
 }
 
+JNIEXPORT jstring SIGAR_JNI(Sigar_getNativeVersion)
+(JNIEnv *env, jclass cls)
+{
+    sigar_version_t *version = sigar_version_get();
+    return JENV->NewStringUTF(env, version->version);
+}
+
+JNIEXPORT jstring SIGAR_JNI(Sigar_getNativeBuildDate)
+(JNIEnv *env, jclass cls)
+{
+    sigar_version_t *version = sigar_version_get();
+    return JENV->NewStringUTF(env, version->build_date);
+}
+
 JNIEXPORT void SIGAR_JNI(Sigar_open)
 (JNIEnv *env, jobject obj)
 {

bindings/java/src/net/hyperic/sigar/Sigar.java

@@ -24,17 +24,27 @@ public class Sigar implements SigarProxy {
     public static final long FIELD_NOTIMPL = -1;
 
     /**
-     * The Sigar version in String form.
+     * The Sigar java version.
      */
     public static final String VERSION_STRING =
         SigarVersion.VERSION_STRING;
 
     /**
-     * The date on which the Sigar binaries were built.
+     * The Sigar native version.
+     */
+    public static final String NATIVE_VERSION_STRING;
+    
+    /**
+     * The date on which sigar.jar was built.
      */
     public static final String BUILD_DATE =
         SigarVersion.BUILD_DATE;
 
+    /**
+     * The date on which the sigar native binary was built.
+     */
+    public static final String NATIVE_BUILD_DATE;
+        
     private static boolean enableLogging =
         "true".equals(System.getProperty("sigar.nativeLogging"));
 
@@ -50,10 +60,11 @@ public class Sigar implements SigarProxy {
     private static SigarProxy instance = null;
 
     static {
+        boolean loaded = false;
         try {
             loadLibrary();
+            loaded = true;
         } catch (SigarException e) {
-            loadError = "Sigar.load: " + e.getMessage();
             try {
                 SigarLog.debug(loadError, e);
             } catch (NoClassDefFoundError ne) {
@@ -62,6 +73,13 @@ public class Sigar implements SigarProxy {
                 e.printStackTrace();
             }
         }
+        if (loaded) {
+            NATIVE_VERSION_STRING = getNativeVersion();
+            NATIVE_BUILD_DATE = getNativeBuildDate();
+        }
+        else {
+            NATIVE_VERSION_STRING = NATIVE_BUILD_DATE = "N/A";
+        }
     }
 
     public static void load() throws SigarException {
@@ -98,6 +116,9 @@ public class Sigar implements SigarProxy {
      */
     public static native String formatSize(long size);
 
+    private static native String getNativeVersion();
+    private static native String getNativeBuildDate();
+
     /**
      * Allocate and initialize the native Sigar object.
      */

bindings/java/src/net/hyperic/sigar/cmd/Version.java

@@ -48,8 +48,16 @@ public class Version extends SigarCommandBase {
     public static void printInfo(PrintStream os) {
         String fqdn = getFQDN();
         String host = getHostName();
-        os.println("Sigar version......." + Sigar.VERSION_STRING);
+
-        os.println("Build date.........." + Sigar.BUILD_DATE);
+        String version =
+            "java=" + Sigar.VERSION_STRING +
+            ", native=" + Sigar.NATIVE_VERSION_STRING;
+        String build =
+            "java=" + Sigar.BUILD_DATE +
+            ", native=" + Sigar.NATIVE_BUILD_DATE;
+        
+        os.println("Sigar version......." + version);
+        os.println("Build date.........." + build);
         os.println("Archlib............." +
                    SigarLoader.getNativeLibraryName());
         os.println("Current fqdn........" + fqdn);