Initial Contribution

1 files changed, 119 insertions, 0 deletions

diff --git a/core/jni/android_debug_JNITest.cpp b/core/jni/android_debug_JNITest.cpp
new file mode 100644
index 0000000..f14201e
--- /dev/null
+++ b/core/jni/android_debug_JNITest.cpp
@@ -0,0 +1,119 @@
+/* //device/libs/android_runtime/android_debug_JNITest.cpp
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#define LOG_TAG "DebugJNI"
+
+#include "jni.h"
+#include "nativehelper/JNIHelp.h"
+#include "utils/Log.h"
+#include "utils/misc.h"
+//#include "android_runtime/AndroidRuntime.h"
+
+namespace android {
+
+/*
+ * Implements:
+ *  native int part1(int intArg, double doubleArg, String stringArg,
+ *      int[] arrayArg)
+ */
+static jint android_debug_JNITest_part1(JNIEnv* env, jobject object,
+    jint intArg, jdouble doubleArg, jstring stringArg, jobjectArray arrayArg)
+{
+    jclass clazz;
+    jmethodID part2id;
+    jsize arrayLen;
+    jint arrayVal;
+    int result = -2;
+
+    LOGI("JNI test: in part1, intArg=%d, doubleArg=%.3f\n", intArg, doubleArg);
+
+    /* find "int part2(double doubleArg, int fromArray, String stringArg)" */
+    clazz = env->GetObjectClass(object);
+    part2id = env->GetMethodID(clazz,
+                "part2", "(DILjava/lang/String;)I");
+    if (part2id == NULL) {
+        LOGE("JNI test: unable to find part2\n");
+        return -1;
+    }
+
+    /* get the length of the array */
+    arrayLen = env->GetArrayLength(arrayArg);
+    LOGI("  array size is %d\n", arrayLen);
+
+    /*
+     * Get the last element in the array.
+     * Use the Get<type>ArrayElements functions instead if you need access
+     * to multiple elements.
+     */
+    arrayVal = (int) env->GetObjectArrayElement(arrayArg, arrayLen-1);
+    LOGI("  array val is %d\n", arrayVal);
+
+    /* call this->part2 */
+    result = env->CallIntMethod(object, part2id,
+        doubleArg, arrayVal, stringArg);
+
+    return result;
+}
+
+/*
+ * Implements:
+ *  private static native int part3(String stringArg);
+ */
+static jint android_debug_JNITest_part3(JNIEnv* env, jclass clazz,
+    jstring stringArg)
+{
+    const char* utfChars;
+    jboolean isCopy;
+
+    LOGI("JNI test: in part3\n");
+
+    utfChars = env->GetStringUTFChars(stringArg, &isCopy);
+
+    LOGI("  String is '%s', isCopy=%d\n", (const char*) utfChars, isCopy);
+
+    env->ReleaseStringUTFChars(stringArg, utfChars);
+
+    return 2000;
+}
+
+/*
+ * JNI registration.
+ */
+static JNINativeMethod gMethods[] = {
+    /* name, signature, funcPtr */
+    { "part1",      "(IDLjava/lang/String;[I)I",
+            (void*) android_debug_JNITest_part1 },
+    { "part3",      "(Ljava/lang/String;)I",
+            (void*) android_debug_JNITest_part3 },
+};
+int register_android_debug_JNITest(JNIEnv* env)
+{
+    return jniRegisterNativeMethods(env, "android/debug/JNITest",
+        gMethods, NELEM(gMethods));
+}
+
+#if 0
+/* trampoline into C++ */
+extern "C"
+int register_android_debug_JNITest_C(JNIEnv* env)
+{
+    return android::register_android_debug_JNITest(env);
+}
+#endif
+
+}; // namespace android
+