javaextensions/sensor/src/sensorjniutils.h
branchRCL_3
changeset 19 04becd199f91
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javaextensions/sensor/src/sensorjniutils.h	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,51 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  JNI utils
+*
+*/
+
+
+#ifndef SENSORJNIUTILS_H
+#define SENSORJNIUTILS_H
+#include <jni.h>
+#include "sensornativeconstants.h"
+
+/**
+ * Handles JNI exception which may have occured during the previous JNI
+ * invocation or Java function call.
+ *
+ * Prints the pending exception and a backtrace of the stack to the
+ * system error-reporting channel System.out.err.This function has the
+ * side effect of clearing the pending exception.
+ *
+ * @param aJniEnv Reference to valid JNI environment
+ * @return KErrNone if no exceptions are pending. Other system-wide error
+ *         code in exception situations
+ */
+inline int HandleException(JNIEnv& aJniEnv)
+{
+    int err = ERROR_NONE;
+    if (aJniEnv.ExceptionCheck())
+    {
+        // Previous JNI operation caused an exception. Print the stack
+        // trace and clear any pending exceptions from the Java VM
+        aJniEnv.ExceptionDescribe();
+        aJniEnv.ExceptionClear();
+        err = ERROR_GENERAL;
+    }
+    return err;
+}
+
+#endif // SENSORJNIUTILS_H
+