experimental partial jni support

4 files changed, 1475 insertions, 0 deletions

diff --git a/third_party/jni/emjvm.cpp b/third_party/jni/emjvm.cpp
new file mode 100644
index 00000000..77ec3871
--- /dev/null
+++ b/third_party/jni/emjvm.cpp
@@ -0,0 +1,133 @@
+
+// Emscripten shims for JVM support
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "emjvm.h"
+
+// invoke interface
+
+jint DestroyJavaVM(JavaVM*) { exit(55); return NULL; }
+jint AttachCurrentThread(JavaVM*, JNIEnv**, void*) { exit(66); return NULL; }
+jint DetachCurrentThread(JavaVM*) { exit(77); return NULL; }
+jint GetEnv(JavaVM*, void** env, jint); // forward def
+jint AttachCurrentThreadAsDaemon(JavaVM*, JNIEnv**, void*) { exit(88); return NULL; }
+
+// env - some of these are externs that are implemented in JS
+
+jobject EMJVM_NewGlobalRef(JNIEnv*, jobject obj) {
+  return obj; // XXX no global refcounting, we just keep global singletons alive etc.
+}
+
+extern "C" {
+  extern jstring emjvm_newString(const jchar *chars, jsize len);
+}
+jstring EMJVM_NewString(JNIEnv*, const jchar* unicodeChars, jsize len) {
+  return emjvm_newString(unicodeChars, len);
+}
+
+extern "C" {
+  extern jclass emjvm_getObjectClass(JNIEnv*, jobject obj);
+}
+
+extern "C" {
+  extern jmethodID emjvm_getMethodID(jclass, const char*, const char*);
+}
+extern jmethodID EMJVM_GetMethodID(JNIEnv*, jclass clazz, const char* methodName, const char* sig) {
+  return emjvm_getMethodID(clazz, methodName, sig);
+}
+
+extern "C" {
+  extern jobject emjvm_callObjectMethod(JNIEnv*, jobject, jmethodID, va_list);
+
+  extern void emjvm_deleteLocalRef(JNIEnv*, jobject);
+
+  jsize emjvm_getArrayLength(JNIEnv*, jarray);
+
+  void emjvm_getByteArrayRegion(JNIEnv*, jbyteArray, jsize, jsize, jbyte*);
+
+  jclass emjvm_findClass(JNIEnv*, const char*);
+
+  jmethodID emjvm_getStaticMethodID(JNIEnv*, jclass, const char*, const char*);
+
+  jobject emjvm_callStaticObjectMethod(JNIEnv*, jclass, jmethodID, va_list);
+
+  jboolean emjvm_callBooleanMethod(JNIEnv*, jobject, jmethodID, va_list);
+  jboolean emjvm_callStaticBooleanMethod(JNIEnv*, jclass, jmethodID, va_list);
+
+  void emjvm_callVoidMethod(JNIEnv*, jobject, jmethodID, va_list);
+
+  jint emjvm_callIntMethod(JNIEnv*, jobject, jmethodID, va_list);
+
+  const char* emjvm_getStringUTFChars(JNIEnv*, jstring, jboolean*);
+  jsize emjvm_getStringUTFLength(JNIEnv*, jstring);
+  void emjvm_releaseStringUTFChars(JNIEnv*, jstring, const char*);
+}
+
+// JVM
+
+struct EmJVM {
+  JavaVM jvm;
+  JNIInvokeInterface jvmFunctions;
+
+  JNIEnv env;
+  JNINativeInterface envFunctions;
+
+  EmJVM() {
+    // jvm
+    jvm.functions = &jvmFunctions;
+
+    jvmFunctions.DestroyJavaVM = DestroyJavaVM;
+    jvmFunctions.AttachCurrentThread = AttachCurrentThread;
+    jvmFunctions.DetachCurrentThread = DetachCurrentThread;
+    jvmFunctions.GetEnv = GetEnv;
+    jvmFunctions.AttachCurrentThreadAsDaemon = AttachCurrentThreadAsDaemon;
+
+    // env
+    memset(&envFunctions, 0, sizeof(envFunctions));
+
+    env.functions = &envFunctions;
+
+    envFunctions.NewGlobalRef = EMJVM_NewGlobalRef;
+    envFunctions.NewString = EMJVM_NewString;
+    envFunctions.GetObjectClass = emjvm_getObjectClass;
+    envFunctions.GetMethodID = EMJVM_GetMethodID;
+    envFunctions.CallObjectMethodV = emjvm_callObjectMethod;
+    envFunctions.DeleteLocalRef = emjvm_deleteLocalRef;
+    envFunctions.GetArrayLength = emjvm_getArrayLength;
+    envFunctions.GetByteArrayRegion = emjvm_getByteArrayRegion;
+    envFunctions.FindClass = emjvm_findClass;
+    envFunctions.GetStaticMethodID = emjvm_getStaticMethodID;
+    envFunctions.CallStaticObjectMethodV = emjvm_callStaticObjectMethod;
+    envFunctions.CallBooleanMethodV = emjvm_callBooleanMethod;
+    envFunctions.CallStaticBooleanMethodV = emjvm_callStaticBooleanMethod;
+    envFunctions.CallVoidMethodV = emjvm_callVoidMethod;
+    envFunctions.CallIntMethodV = emjvm_callIntMethod;
+    envFunctions.GetStringUTFChars = emjvm_getStringUTFChars;
+    envFunctions.GetStringUTFLength = emjvm_getStringUTFLength;
+    envFunctions.ReleaseStringUTFChars = emjvm_releaseStringUTFChars;
+  }
+};
+
+EmJVM emJVM;
+
+// implement forward defs
+
+jint GetEnv(JavaVM*, void** env, jint) {
+  *env = &emJVM.env;
+  return 0;
+}
+
+// external access from JS
+
+extern "C" {
+
+JavaVM* emscripten_get_jvm() { return &emJVM.jvm; }
+
+JNIEnv* emscripten_get_jni_env() { return &emJVM.env; }
+
+}
+
diff --git a/third_party/jni/emjvm.h b/third_party/jni/emjvm.h
new file mode 100644
index 00000000..fb09413a
--- /dev/null
+++ b/third_party/jni/emjvm.h
@@ -0,0 +1,8 @@
+
+#include "jni.h"
+
+extern "C" {
+  extern JavaVM* emscripten_get_jvm();
+  extern JNIEnv* emscripten_get_jni_env();
+}
+
diff --git a/third_party/jni/emjvm.js b/third_party/jni/emjvm.js
new file mode 100644
index 00000000..e422d208
--- /dev/null
+++ b/third_party/jni/emjvm.js
@@ -0,0 +1,180 @@
+
+var EmJVM = {
+  debug: false,
+
+  nextId: 0,
+  objects: {},
+  classNames: {}, // class name => singleton object
+
+  addObject: function(o) {
+    var ret = EmJVM.nextId++;
+    EmJVM.objects[ret] = o;
+    o.id = ret;
+    o.refs = 1;
+    o.nextMethodId = 0;
+    // XXX Module.print('add object ' + JSON.stringify(o).substr(0, 80) + (ret > 5285 ? new Error().stack : ''));
+    return ret;
+  },
+
+  addSingletonObject: function(o) {
+    EmJVM.classNames[o.name] = o;
+    return EmJVM.addObject(o);
+  },
+
+  createString: function(data) {
+    return EmJVM.addObject({ name: 'string', value: data });
+  },
+
+  createByteArray: function(data) {
+    return EmJVM.addObject({ name: 'byteArray', value: data });
+  },
+};
+
+function widecharToString(ptr, len) {
+  var nullTerminated = typeof(len) == "undefined";
+  var ret = "";
+  var i = 0;
+  var t;
+  while (1) {
+    t = getValue(ptr + 2 * i, 'i16');
+    if (nullTerminated && t == 0) break;
+    if (t != 0) {
+      ret += String.fromCharCode(t);
+    }
+    ++i;
+    if (!nullTerminated && i == len) break;
+  };
+  return ret;
+}
+
+function _emjvm_newString(chars, len) {
+  return EmJVM.createString(widecharToString(chars, len));
+}
+
+function _emjvm_getStringUTFChars(jniEnv, string, isCopy) {
+  var obj = EmJVM.objects[string];
+  assert(obj.name == 'string');
+  if (isCopy) setValue(isCopy, 'i8', 1);
+  var buffer = _malloc(obj.value.length+1);
+  writeStringToMemory(obj.value, buffer);
+  return buffer;
+}
+
+function _emjvm_getStringUTFLength(jniEnv, string) {
+  var obj = EmJVM.objects[string];
+  if (obj.value) {
+    return obj.value.length;
+  }
+  return 0;
+}
+
+function _emjvm_releaseStringUTFChars(jniEnv, string, utf) {
+}
+
+function _emjvm_getObjectClass(env, jobject) {
+  if (EmJVM.debug) {
+    console.log('EMJVM_GetObjectClass+AddLocalRef: ' + [jobject]);
+  }
+  var obj = EmJVM.objects[jobject];
+  obj.refs++;
+  return jobject;
+}
+
+function _emjvm_getMethodID(jclass, name, sig) {
+  if (EmJVM.debug) {
+    console.log('EMJVM_GetMethodID: ' + [jclass, Pointer_stringify(name), Pointer_stringify(sig)]);
+    console.log('EMJVM_GetMethodID: ' + [EmJVM.objects[jclass].name]);
+  }
+  // assumes class <--> object, just called on singletons
+  name = Pointer_stringify(name);
+  var obj = EmJVM.objects[jclass];
+  if (!obj[name]) {
+    throw 'missing implementation for ' + obj.name + '::' + name + ' : ' + new Error().stack;
+  }
+  if (!obj[name + '__methodId']) {
+    var methodId = obj.nextMethodId++;
+    obj[name + '__methodId'] = methodId;
+    obj['method__' + methodId] = obj[name];
+    obj['methodName__' + methodId] = name;
+  }
+  return obj[name + '__methodId'];
+}
+
+function _emjvm_getStaticMethodID(jniEnv, jclass, name, sig) {
+  // Pretend this to be the same as looking up a non-static method
+  return _emjvm_getMethodID(jclass, name, sig);
+}
+
+function _emjvm_callObjectMethod(jniEnv, jobject, methodId, varargs) {
+  if (EmJVM.debug) {
+    console.log('EMJVM_CallObjectMethod: ' + [jobject, EmJVM.objects[jobject].name, methodId, EmJVM.objects[jobject]['methodName__' + methodId]]);
+  }
+  return EmJVM.objects[jobject]['method__' + methodId](varargs);
+}
+
+function _emjvm_callStaticObjectMethod(jniEnv, jclass, methodId, varargs) {
+  // Pretend this to be the same as calling a non-static method
+  return _emjvm_callObjectMethod(jniEnv, jclass, methodId, varargs);
+}
+
+function _emjvm_callStaticBooleanMethod(jniEnv, jclass, methodId, varargs) {
+  // Only differs in return type
+  return _emjvm_callStaticObjectMethod(jniEnv, jclass, methodId, varargs);
+}
+
+function _emjvm_callBooleanMethod(jniEnv, jobject, methodId, varargs) {
+  // Pretend this to be the same as calling a non-static method
+  return _emjvm_callStaticBooleanMethod(jniEnv, jobject, methodId, varargs);
+}
+
+function _emjvm_callVoidMethod(jniEnv, jobject, methodId, varargs) {
+  _emjvm_callObjectMethod(jniEnv, jobject, methodId, varargs);
+}
+
+function _emjvm_callIntMethod(jniEnv, jobject, methodId, varargs) {
+  return _emjvm_callObjectMethod(jniEnv, jobject, methodId, varargs);
+}
+
+function _emjvm_deleteLocalRef(jniEnv, jobject) {
+  if (EmJVM.debug) {
+    console.log('EMJVM_DeleteLocalRef: ' + [jobject]);
+  }
+  var obj = EmJVM.objects[jobject];
+  obj.refs--;
+  if (obj.refs == 0) {
+    if (EmJVM.debug) {
+      console.log('EMJVM_DeleteLocalRef: remove ' + obj.name);
+    }
+    delete EmJVM.objects[jobject];
+  }
+}
+
+function _emjvm_getArrayLength(jniEnv, jobject) {
+  var obj = EmJVM.objects[jobject];
+  assert(obj.name == 'byteArray');
+  return obj.value.length;
+}
+
+function _emjvm_getByteArrayRegion(jniEnv, jobject, start, len, buf) {
+  var obj = EmJVM.objects[jobject];
+  assert(obj.name == 'byteArray');
+  assert(obj.value); // we set this to null below and assume we are never called again
+  if (EmJVM.debug) {
+    console.log('emjvm_getByteArrayRegion: ' + [jobject, obj.value.length, start, len, buf]);
+  }
+  assert(start + len <= obj.value.length);
+  assert(len == obj.value.length); // we assume users read it all, and we can now copy it all with set() and then free it
+  HEAPU8.set(obj.value, buf);
+  obj.value = null; // XXX assume byte arrays are one-shot
+}
+
+function _emjvm_findClass(env, name) {
+  name = Pointer_stringify(name);
+  if (EmJVM.debug) {
+    console.log('emjvm_findClass: ' + [name]);
+  }
+  var obj = EmJVM.classNames[name];
+  assert(obj);
+  return obj.id;
+}
+
diff --git a/third_party/jni/jni.h b/third_party/jni/jni.h
new file mode 100644
index 00000000..b425dd42
--- /dev/null
+++ b/third_party/jni/jni.h
@@ -0,0 +1,1154 @@
+/*
+* Copyright (C) 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.
+*/
+
+/*
+ * JNI specification, as defined by Sun:
+ * http://java.sun.com/javase/6/docs/technotes/guides/jni/spec/jniTOC.html
+ *
+ * Everything here is expected to be VM-neutral.
+ */
+#ifndef _JNI_H
+#define _JNI_H
+
+#include <stdarg.h>
+
+/*
+ * Primitive types that match up with Java equivalents.
+ */
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>      /* C99 */
+typedef uint8_t         jboolean;       /* unsigned 8 bits */
+typedef int8_t          jbyte;          /* signed 8 bits */
+typedef uint16_t        jchar;          /* unsigned 16 bits */
+typedef int16_t         jshort;         /* signed 16 bits */
+typedef int32_t         jint;           /* signed 32 bits */
+typedef int64_t         jlong;          /* signed 64 bits */
+typedef float           jfloat;         /* 32-bit IEEE 754 */
+typedef double          jdouble;        /* 64-bit IEEE 754 */
+#else
+typedef unsigned char   jboolean;       /* unsigned 8 bits */
+typedef signed char     jbyte;          /* signed 8 bits */
+typedef unsigned short  jchar;          /* unsigned 16 bits */
+typedef short           jshort;         /* signed 16 bits */
+typedef int             jint;           /* signed 32 bits */
+typedef long long       jlong;          /* signed 64 bits */
+typedef float           jfloat;         /* 32-bit IEEE 754 */
+typedef double          jdouble;        /* 64-bit IEEE 754 */
+#endif
+
+/* "cardinal indices and sizes" */
+typedef jint            jsize;
+
+#ifdef __cplusplus
+/*
+ * Reference types, in C++
+ */
+class _jobject {};
+class _jclass : public _jobject {};
+class _jstring : public _jobject {};
+class _jarray : public _jobject {};
+class _jobjectArray : public _jarray {};
+class _jbooleanArray : public _jarray {};
+class _jbyteArray : public _jarray {};
+class _jcharArray : public _jarray {};
+class _jshortArray : public _jarray {};
+class _jintArray : public _jarray {};
+class _jlongArray : public _jarray {};
+class _jfloatArray : public _jarray {};
+class _jdoubleArray : public _jarray {};
+class _jthrowable : public _jobject {};
+
+typedef _jobject*       jobject;
+typedef _jclass*        jclass;
+typedef _jstring*       jstring;
+typedef _jarray*        jarray;
+typedef _jobjectArray*  jobjectArray;
+typedef _jbooleanArray* jbooleanArray;
+typedef _jbyteArray*    jbyteArray;
+typedef _jcharArray*    jcharArray;
+typedef _jshortArray*   jshortArray;
+typedef _jintArray*     jintArray;
+typedef _jlongArray*    jlongArray;
+typedef _jfloatArray*   jfloatArray;
+typedef _jdoubleArray*  jdoubleArray;
+typedef _jthrowable*    jthrowable;
+typedef _jobject*       jweak;
+
+
+#else /* not __cplusplus */
+
+/*
+ * Reference types, in C.
+ */
+typedef void*           jobject;
+typedef jobject         jclass;
+typedef jobject         jstring;
+typedef jobject         jarray;
+typedef jarray          jobjectArray;
+typedef jarray          jbooleanArray;
+typedef jarray          jbyteArray;
+typedef jarray          jcharArray;
+typedef jarray          jshortArray;
+typedef jarray          jintArray;
+typedef jarray          jlongArray;
+typedef jarray          jfloatArray;
+typedef jarray          jdoubleArray;
+typedef jobject         jthrowable;
+typedef jobject         jweak;
+
+#endif /* not __cplusplus */
+
+struct _jfieldID;                       /* opaque structure */
+typedef struct _jfieldID* jfieldID;     /* field IDs */
+
+struct _jmethodID;                      /* opaque structure */
+typedef struct _jmethodID* jmethodID;   /* method IDs */
+
+struct JNIInvokeInterface;
+
+typedef union jvalue {
+    jboolean    z;
+    jbyte       b;
+    jchar       c;
+    jshort      s;
+    jint        i;
+    jlong       j;
+    jfloat      f;
+    jdouble     d;
+    jobject     l;
+} jvalue;
+
+typedef enum jobjectRefType {
+    JNIInvalidRefType = 0,
+    JNILocalRefType = 1,
+    JNIGlobalRefType = 2,
+    JNIWeakGlobalRefType = 3
+} jobjectRefType;
+
+typedef struct { 
+    const char* name; 
+    const char* signature; 
+    void*       fnPtr; 
+} JNINativeMethod;
+
+struct _JNIEnv;
+struct _JavaVM;
+typedef const struct JNINativeInterface* C_JNIEnv;
+
+#if defined(__cplusplus)
+typedef _JNIEnv JNIEnv;
+typedef _JavaVM JavaVM;
+#else
+typedef const struct JNINativeInterface* JNIEnv;
+typedef const struct JNIInvokeInterface* JavaVM;
+#endif
+
+/*
+ * Table of interface function pointers.
+ */
+struct JNINativeInterface {
+    void*       reserved0;
+    void*       reserved1;
+    void*       reserved2;
+    void*       reserved3;
+
+    jint        (*GetVersion)(JNIEnv *);
+
+    jclass      (*DefineClass)(JNIEnv*, const char*, jobject, const jbyte*,
+                        jsize);
+    jclass      (*FindClass)(JNIEnv*, const char*);
+
+    jmethodID   (*FromReflectedMethod)(JNIEnv*, jobject);
+    jfieldID    (*FromReflectedField)(JNIEnv*, jobject);
+    /* spec doesn't show jboolean parameter */
+    jobject     (*ToReflectedMethod)(JNIEnv*, jclass, jmethodID, jboolean);
+
+    jclass      (*GetSuperclass)(JNIEnv*, jclass);
+    jboolean    (*IsAssignableFrom)(JNIEnv*, jclass, jclass);
+
+    /* spec doesn't show jboolean parameter */
+    jobject     (*ToReflectedField)(JNIEnv*, jclass, jfieldID, jboolean);
+
+    jint        (*Throw)(JNIEnv*, jthrowable);
+    jint        (*ThrowNew)(JNIEnv *, jclass, const char *);
+    jthrowable  (*ExceptionOccurred)(JNIEnv*);
+    void        (*ExceptionDescribe)(JNIEnv*);
+    void        (*ExceptionClear)(JNIEnv*);
+    void        (*FatalError)(JNIEnv*, const char*);
+
+    jint        (*PushLocalFrame)(JNIEnv*, jint);
+    jobject     (*PopLocalFrame)(JNIEnv*, jobject);
+
+    jobject     (*NewGlobalRef)(JNIEnv*, jobject);
+    void        (*DeleteGlobalRef)(JNIEnv*, jobject);
+    void        (*DeleteLocalRef)(JNIEnv*, jobject);
+    jboolean    (*IsSameObject)(JNIEnv*, jobject, jobject);
+
+    jobject     (*NewLocalRef)(JNIEnv*, jobject);
+    jint        (*EnsureLocalCapacity)(JNIEnv*, jint);
+
+    jobject     (*AllocObject)(JNIEnv*, jclass);
+    jobject     (*NewObject)(JNIEnv*, jclass, jmethodID, ...);
+    jobject     (*NewObjectV)(JNIEnv*, jclass, jmethodID, va_list);
+    jobject     (*NewObjectA)(JNIEnv*, jclass, jmethodID, jvalue*);
+
+    jclass      (*GetObjectClass)(JNIEnv*, jobject);
+    jboolean    (*IsInstanceOf)(JNIEnv*, jobject, jclass);
+    jmethodID   (*GetMethodID)(JNIEnv*, jclass, const char*, const char*);
+
+    jobject     (*CallObjectMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jobject     (*CallObjectMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jobject     (*CallObjectMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jboolean    (*CallBooleanMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jboolean    (*CallBooleanMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jboolean    (*CallBooleanMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jbyte       (*CallByteMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jbyte       (*CallByteMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jbyte       (*CallByteMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jchar       (*CallCharMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jchar       (*CallCharMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jchar       (*CallCharMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jshort      (*CallShortMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jshort      (*CallShortMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jshort      (*CallShortMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jint        (*CallIntMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jint        (*CallIntMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jint        (*CallIntMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jlong       (*CallLongMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jlong       (*CallLongMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jlong       (*CallLongMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jfloat      (*CallFloatMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jfloat      (*CallFloatMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jfloat      (*CallFloatMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jdouble     (*CallDoubleMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jdouble     (*CallDoubleMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jdouble     (*CallDoubleMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    void        (*CallVoidMethod)(JNIEnv*, jobject, jmethodID, ...);
+    void        (*CallVoidMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    void        (*CallVoidMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+
+    jobject     (*CallNonvirtualObjectMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jobject     (*CallNonvirtualObjectMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jobject     (*CallNonvirtualObjectMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jboolean    (*CallNonvirtualBooleanMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jboolean    (*CallNonvirtualBooleanMethodV)(JNIEnv*, jobject, jclass,
+                         jmethodID, va_list);
+    jboolean    (*CallNonvirtualBooleanMethodA)(JNIEnv*, jobject, jclass,
+                         jmethodID, jvalue*);
+    jbyte       (*CallNonvirtualByteMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jbyte       (*CallNonvirtualByteMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jbyte       (*CallNonvirtualByteMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jchar       (*CallNonvirtualCharMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jchar       (*CallNonvirtualCharMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jchar       (*CallNonvirtualCharMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jshort      (*CallNonvirtualShortMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jshort      (*CallNonvirtualShortMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jshort      (*CallNonvirtualShortMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jint        (*CallNonvirtualIntMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jint        (*CallNonvirtualIntMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jint        (*CallNonvirtualIntMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jlong       (*CallNonvirtualLongMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jlong       (*CallNonvirtualLongMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jlong       (*CallNonvirtualLongMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jfloat      (*CallNonvirtualFloatMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jfloat      (*CallNonvirtualFloatMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jfloat      (*CallNonvirtualFloatMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jdouble     (*CallNonvirtualDoubleMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jdouble     (*CallNonvirtualDoubleMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jdouble     (*CallNonvirtualDoubleMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    void        (*CallNonvirtualVoidMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    void        (*CallNonvirtualVoidMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    void        (*CallNonvirtualVoidMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+
+    jfieldID    (*GetFieldID)(JNIEnv*, jclass, const char*, const char*);
+
+    jobject     (*GetObjectField)(JNIEnv*, jobject, jfieldID);
+    jboolean    (*GetBooleanField)(JNIEnv*, jobject, jfieldID);
+    jbyte       (*GetByteField)(JNIEnv*, jobject, jfieldID);
+    jchar       (*GetCharField)(JNIEnv*, jobject, jfieldID);
+    jshort      (*GetShortField)(JNIEnv*, jobject, jfieldID);
+    jint        (*GetIntField)(JNIEnv*, jobject, jfieldID);
+    jlong       (*GetLongField)(JNIEnv*, jobject, jfieldID);
+    jfloat      (*GetFloatField)(JNIEnv*, jobject, jfieldID);
+    jdouble     (*GetDoubleField)(JNIEnv*, jobject, jfieldID);
+
+    void        (*SetObjectField)(JNIEnv*, jobject, jfieldID, jobject);
+    void        (*SetBooleanField)(JNIEnv*, jobject, jfieldID, jboolean);
+    void        (*SetByteField)(JNIEnv*, jobject, jfieldID, jbyte);
+    void        (*SetCharField)(JNIEnv*, jobject, jfieldID, jchar);
+    void        (*SetShortField)(JNIEnv*, jobject, jfieldID, jshort);
+    void        (*SetIntField)(JNIEnv*, jobject, jfieldID, jint);
+    void        (*SetLongField)(JNIEnv*, jobject, jfieldID, jlong);
+    void        (*SetFloatField)(JNIEnv*, jobject, jfieldID, jfloat);
+    void        (*SetDoubleField)(JNIEnv*, jobject, jfieldID, jdouble);
+
+    jmethodID   (*GetStaticMethodID)(JNIEnv*, jclass, const char*, const char*);
+
+    jobject     (*CallStaticObjectMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jobject     (*CallStaticObjectMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jobject     (*CallStaticObjectMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jboolean    (*CallStaticBooleanMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jboolean    (*CallStaticBooleanMethodV)(JNIEnv*, jclass, jmethodID,
+                        va_list);
+    jboolean    (*CallStaticBooleanMethodA)(JNIEnv*, jclass, jmethodID,
+                        jvalue*);
+    jbyte       (*CallStaticByteMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jbyte       (*CallStaticByteMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jbyte       (*CallStaticByteMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jchar       (*CallStaticCharMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jchar       (*CallStaticCharMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jchar       (*CallStaticCharMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jshort      (*CallStaticShortMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jshort      (*CallStaticShortMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jshort      (*CallStaticShortMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jint        (*CallStaticIntMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jint        (*CallStaticIntMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jint        (*CallStaticIntMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jlong       (*CallStaticLongMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jlong       (*CallStaticLongMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jlong       (*CallStaticLongMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jfloat      (*CallStaticFloatMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jfloat      (*CallStaticFloatMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jfloat      (*CallStaticFloatMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jdouble     (*CallStaticDoubleMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jdouble     (*CallStaticDoubleMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jdouble     (*CallStaticDoubleMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    void        (*CallStaticVoidMethod)(JNIEnv*, jclass, jmethodID, ...);
+    void        (*CallStaticVoidMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    void        (*CallStaticVoidMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+
+    jfieldID    (*GetStaticFieldID)(JNIEnv*, jclass, const char*,
+                        const char*);
+
+    jobject     (*GetStaticObjectField)(JNIEnv*, jclass, jfieldID);
+    jboolean    (*GetStaticBooleanField)(JNIEnv*, jclass, jfieldID);
+    jbyte       (*GetStaticByteField)(JNIEnv*, jclass, jfieldID);
+    jchar       (*GetStaticCharField)(JNIEnv*, jclass, jfieldID);
+    jshort      (*GetStaticShortField)(JNIEnv*, jclass, jfieldID);
+    jint        (*GetStaticIntField)(JNIEnv*, jclass, jfieldID);
+    jlong       (*GetStaticLongField)(JNIEnv*, jclass, jfieldID);
+    jfloat      (*GetStaticFloatField)(JNIEnv*, jclass, jfieldID);
+    jdouble     (*GetStaticDoubleField)(JNIEnv*, jclass, jfieldID);
+
+    void        (*SetStaticObjectField)(JNIEnv*, jclass, jfieldID, jobject);
+    void        (*SetStaticBooleanField)(JNIEnv*, jclass, jfieldID, jboolean);
+    void        (*SetStaticByteField)(JNIEnv*, jclass, jfieldID, jbyte);
+    void        (*SetStaticCharField)(JNIEnv*, jclass, jfieldID, jchar);
+    void        (*SetStaticShortField)(JNIEnv*, jclass, jfieldID, jshort);
+    void        (*SetStaticIntField)(JNIEnv*, jclass, jfieldID, jint);
+    void        (*SetStaticLongField)(JNIEnv*, jclass, jfieldID, jlong);
+    void        (*SetStaticFloatField)(JNIEnv*, jclass, jfieldID, jfloat);
+    void        (*SetStaticDoubleField)(JNIEnv*, jclass, jfieldID, jdouble);
+
+    jstring     (*NewString)(JNIEnv*, const jchar*, jsize);
+    jsize       (*GetStringLength)(JNIEnv*, jstring);
+    const jchar* (*GetStringChars)(JNIEnv*, jstring, jboolean*);
+    void        (*ReleaseStringChars)(JNIEnv*, jstring, const jchar*);
+    jstring     (*NewStringUTF)(JNIEnv*, const char*);
+    jsize       (*GetStringUTFLength)(JNIEnv*, jstring);
+    /* JNI spec says this returns const jbyte*, but that's inconsistent */
+    const char* (*GetStringUTFChars)(JNIEnv*, jstring, jboolean*);
+    void        (*ReleaseStringUTFChars)(JNIEnv*, jstring, const char*);
+    jsize       (*GetArrayLength)(JNIEnv*, jarray);
+    jobjectArray (*NewObjectArray)(JNIEnv*, jsize, jclass, jobject);
+    jobject     (*GetObjectArrayElement)(JNIEnv*, jobjectArray, jsize);
+    void        (*SetObjectArrayElement)(JNIEnv*, jobjectArray, jsize, jobject);
+
+    jbooleanArray (*NewBooleanArray)(JNIEnv*, jsize);
+    jbyteArray    (*NewByteArray)(JNIEnv*, jsize);
+    jcharArray    (*NewCharArray)(JNIEnv*, jsize);
+    jshortArray   (*NewShortArray)(JNIEnv*, jsize);
+    jintArray     (*NewIntArray)(JNIEnv*, jsize);
+    jlongArray    (*NewLongArray)(JNIEnv*, jsize);
+    jfloatArray   (*NewFloatArray)(JNIEnv*, jsize);
+    jdoubleArray  (*NewDoubleArray)(JNIEnv*, jsize);
+
+    jboolean*   (*GetBooleanArrayElements)(JNIEnv*, jbooleanArray, jboolean*);
+    jbyte*      (*GetByteArrayElements)(JNIEnv*, jbyteArray, jboolean*);
+    jchar*      (*GetCharArrayElements)(JNIEnv*, jcharArray, jboolean*);
+    jshort*     (*GetShortArrayElements)(JNIEnv*, jshortArray, jboolean*);
+    jint*       (*GetIntArrayElements)(JNIEnv*, jintArray, jboolean*);
+    jlong*      (*GetLongArrayElements)(JNIEnv*, jlongArray, jboolean*);
+    jfloat*     (*GetFloatArrayElements)(JNIEnv*, jfloatArray, jboolean*);
+    jdouble*    (*GetDoubleArrayElements)(JNIEnv*, jdoubleArray, jboolean*);
+
+    void        (*ReleaseBooleanArrayElements)(JNIEnv*, jbooleanArray,
+                        jboolean*, jint);
+    void        (*ReleaseByteArrayElements)(JNIEnv*, jbyteArray,
+                        jbyte*, jint);
+    void        (*ReleaseCharArrayElements)(JNIEnv*, jcharArray,
+                        jchar*, jint);
+    void        (*ReleaseShortArrayElements)(JNIEnv*, jshortArray,
+                        jshort*, jint);
+    void        (*ReleaseIntArrayElements)(JNIEnv*, jintArray,
+                        jint*, jint);
+    void        (*ReleaseLongArrayElements)(JNIEnv*, jlongArray,
+                        jlong*, jint);
+    void        (*ReleaseFloatArrayElements)(JNIEnv*, jfloatArray,
+                        jfloat*, jint);
+    void        (*ReleaseDoubleArrayElements)(JNIEnv*, jdoubleArray,
+                        jdouble*, jint);
+
+    void        (*GetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
+                        jsize, jsize, jboolean*);
+    void        (*GetByteArrayRegion)(JNIEnv*, jbyteArray,
+                        jsize, jsize, jbyte*);
+    void        (*GetCharArrayRegion)(JNIEnv*, jcharArray,
+                        jsize, jsize, jchar*);
+    void        (*GetShortArrayRegion)(JNIEnv*, jshortArray,
+                        jsize, jsize, jshort*);
+    void        (*GetIntArrayRegion)(JNIEnv*, jintArray,
+                        jsize, jsize, jint*);
+    void        (*GetLongArrayRegion)(JNIEnv*, jlongArray,
+                        jsize, jsize, jlong*);
+    void        (*GetFloatArrayRegion)(JNIEnv*, jfloatArray,
+                        jsize, jsize, jfloat*);
+    void        (*GetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
+                        jsize, jsize, jdouble*);
+
+    /* spec shows these without const; some jni.h do, some don't */
+    void        (*SetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
+                        jsize, jsize, const jboolean*);
+    void        (*SetByteArrayRegion)(JNIEnv*, jbyteArray,
+                        jsize, jsize, const jbyte*);
+    void        (*SetCharArrayRegion)(JNIEnv*, jcharArray,
+                        jsize, jsize, const jchar*);
+    void        (*SetShortArrayRegion)(JNIEnv*, jshortArray,
+                        jsize, jsize, const jshort*);
+    void        (*SetIntArrayRegion)(JNIEnv*, jintArray,
+                        jsize, jsize, const jint*);
+    void        (*SetLongArrayRegion)(JNIEnv*, jlongArray,
+                        jsize, jsize, const jlong*);
+    void        (*SetFloatArrayRegion)(JNIEnv*, jfloatArray,
+                        jsize, jsize, const jfloat*);
+    void        (*SetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
+                        jsize, jsize, const jdouble*);
+
+    jint        (*RegisterNatives)(JNIEnv*, jclass, const JNINativeMethod*,
+                        jint);
+    jint        (*UnregisterNatives)(JNIEnv*, jclass);
+    jint        (*MonitorEnter)(JNIEnv*, jobject);
+    jint        (*MonitorExit)(JNIEnv*, jobject);
+    jint        (*GetJavaVM)(JNIEnv*, JavaVM**);
+
+    void        (*GetStringRegion)(JNIEnv*, jstring, jsize, jsize, jchar*);
+    void        (*GetStringUTFRegion)(JNIEnv*, jstring, jsize, jsize, char*);
+
+    void*       (*GetPrimitiveArrayCritical)(JNIEnv*, jarray, jboolean*);
+    void        (*ReleasePrimitiveArrayCritical)(JNIEnv*, jarray, void*, jint);
+
+    const jchar* (*GetStringCritical)(JNIEnv*, jstring, jboolean*);
+    void        (*ReleaseStringCritical)(JNIEnv*, jstring, const jchar*);
+
+    jweak       (*NewWeakGlobalRef)(JNIEnv*, jobject);
+    void        (*DeleteWeakGlobalRef)(JNIEnv*, jweak);
+
+    jboolean    (*ExceptionCheck)(JNIEnv*);
+
+    jobject     (*NewDirectByteBuffer)(JNIEnv*, void*, jlong);
+    void*       (*GetDirectBufferAddress)(JNIEnv*, jobject);
+    jlong       (*GetDirectBufferCapacity)(JNIEnv*, jobject);
+
+    /* added in JNI 1.6 */
+    jobjectRefType (*GetObjectRefType)(JNIEnv*, jobject);
+};
+
+/*
+ * C++ object wrapper.
+ *
+ * This is usually overlaid on a C struct whose first element is a
+ * JNINativeInterface*.  We rely somewhat on compiler behavior.
+ */
+struct _JNIEnv {
+    /* do not rename this; it does not seem to be entirely opaque */
+    const struct JNINativeInterface* functions;
+
+#if defined(__cplusplus)
+
+    jint GetVersion()
+    { return functions->GetVersion(this); }
+
+    jclass DefineClass(const char *name, jobject loader, const jbyte* buf,
+        jsize bufLen)
+    { return functions->DefineClass(this, name, loader, buf, bufLen); }
+
+    jclass FindClass(const char* name)
+    { return functions->FindClass(this, name); }
+
+    jmethodID FromReflectedMethod(jobject method)
+    { return functions->FromReflectedMethod(this, method); }
+
+    jfieldID FromReflectedField(jobject field)
+    { return functions->FromReflectedField(this, field); }
+
+    jobject ToReflectedMethod(jclass cls, jmethodID methodID, jboolean isStatic)
+    { return functions->ToReflectedMethod(this, cls, methodID, isStatic); }
+
+    jclass GetSuperclass(jclass clazz)
+    { return functions->GetSuperclass(this, clazz); }
+
+    jboolean IsAssignableFrom(jclass clazz1, jclass clazz2)
+    { return functions->IsAssignableFrom(this, clazz1, clazz2); }
+
+    jobject ToReflectedField(jclass cls, jfieldID fieldID, jboolean isStatic)
+    { return functions->ToReflectedField(this, cls, fieldID, isStatic); }
+
+    jint Throw(jthrowable obj)
+    { return functions->Throw(this, obj); }
+
+    jint ThrowNew(jclass clazz, const char* message)
+    { return functions->ThrowNew(this, clazz, message); }
+
+    jthrowable ExceptionOccurred()
+    { return functions->ExceptionOccurred(this); }
+
+    void ExceptionDescribe()
+    { functions->ExceptionDescribe(this); }
+
+    void ExceptionClear()
+    { functions->ExceptionClear(this); }
+
+    void FatalError(const char* msg)
+    { functions->FatalError(this, msg); }
+
+    jint PushLocalFrame(jint capacity)
+    { return functions->PushLocalFrame(this, capacity); }
+
+    jobject PopLocalFrame(jobject result)
+    { return functions->PopLocalFrame(this, result); }
+
+    jobject NewGlobalRef(jobject obj)
+    { return functions->NewGlobalRef(this, obj); }
+
+    void DeleteGlobalRef(jobject globalRef)
+    { functions->DeleteGlobalRef(this, globalRef); }
+
+    void DeleteLocalRef(jobject localRef)
+    { functions->DeleteLocalRef(this, localRef); }
+
+    jboolean IsSameObject(jobject ref1, jobject ref2)
+    { return functions->IsSameObject(this, ref1, ref2); }
+
+    jobject NewLocalRef(jobject ref)
+    { return functions->NewLocalRef(this, ref); }
+
+    jint EnsureLocalCapacity(jint capacity)
+    { return functions->EnsureLocalCapacity(this, capacity); }
+
+    jobject AllocObject(jclass clazz)
+    { return functions->AllocObject(this, clazz); }
+
+    jobject NewObject(jclass clazz, jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        jobject result = functions->NewObjectV(this, clazz, methodID, args);
+        va_end(args);
+        return result;
+    }
+
+    jobject NewObjectV(jclass clazz, jmethodID methodID, va_list args)
+    { return functions->NewObjectV(this, clazz, methodID, args); }
+
+    jobject NewObjectA(jclass clazz, jmethodID methodID, jvalue* args)
+    { return functions->NewObjectA(this, clazz, methodID, args); }
+
+    jclass GetObjectClass(jobject obj)
+    { return functions->GetObjectClass(this, obj); }
+
+    jboolean IsInstanceOf(jobject obj, jclass clazz)
+    { return functions->IsInstanceOf(this, obj, clazz); }
+
+    jmethodID GetMethodID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetMethodID(this, clazz, name, sig); }
+
+#define CALL_TYPE_METHOD(_jtype, _jname)                                    \
+    _jtype Call##_jname##Method(jobject obj, jmethodID methodID, ...)       \
+    {                                                                       \
+        _jtype result;                                                      \
+        va_list args;                                                       \
+        va_start(args, methodID);                                           \
+        result = functions->Call##_jname##MethodV(this, obj, methodID,      \
+                    args);                                                  \
+        va_end(args);                                                       \
+        return result;                                                      \
+    }
+#define CALL_TYPE_METHODV(_jtype, _jname)                                   \
+    _jtype Call##_jname##MethodV(jobject obj, jmethodID methodID,           \
+        va_list args)                                                       \
+    { return functions->Call##_jname##MethodV(this, obj, methodID, args); }
+#define CALL_TYPE_METHODA(_jtype, _jname)                                   \
+    _jtype Call##_jname##MethodA(jobject obj, jmethodID methodID,           \
+        jvalue* args)                                                       \
+    { return functions->Call##_jname##MethodA(this, obj, methodID, args); }
+
+#define CALL_TYPE(_jtype, _jname)                                           \
+    CALL_TYPE_METHOD(_jtype, _jname)                                        \
+    CALL_TYPE_METHODV(_jtype, _jname)                                       \
+    CALL_TYPE_METHODA(_jtype, _jname)
+
+    CALL_TYPE(jobject, Object)
+    CALL_TYPE(jboolean, Boolean)
+    CALL_TYPE(jbyte, Byte)
+    CALL_TYPE(jchar, Char)
+    CALL_TYPE(jshort, Short)
+    CALL_TYPE(jint, Int)
+    CALL_TYPE(jlong, Long)
+    CALL_TYPE(jfloat, Float)
+    CALL_TYPE(jdouble, Double)
+
+    void CallVoidMethod(jobject obj, jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        functions->CallVoidMethodV(this, obj, methodID, args);
+        va_end(args);
+    }
+    void CallVoidMethodV(jobject obj, jmethodID methodID, va_list args)
+    { functions->CallVoidMethodV(this, obj, methodID, args); }
+    void CallVoidMethodA(jobject obj, jmethodID methodID, jvalue* args)
+    { functions->CallVoidMethodA(this, obj, methodID, args); }
+
+#define CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                            \
+    _jtype CallNonvirtual##_jname##Method(jobject obj, jclass clazz,        \
+        jmethodID methodID, ...)                                            \
+    {                                                                       \
+        _jtype result;                                                      \
+        va_list args;                                                       \
+        va_start(args, methodID);                                           \
+        result = functions->CallNonvirtual##_jname##MethodV(this, obj,      \
+                    clazz, methodID, args);                                 \
+        va_end(args);                                                       \
+        return result;                                                      \
+    }
+#define CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                           \
+    _jtype CallNonvirtual##_jname##MethodV(jobject obj, jclass clazz,       \
+        jmethodID methodID, va_list args)                                   \
+    { return functions->CallNonvirtual##_jname##MethodV(this, obj, clazz,   \
+        methodID, args); }
+#define CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)                           \
+    _jtype CallNonvirtual##_jname##MethodA(jobject obj, jclass clazz,       \
+        jmethodID methodID, jvalue* args)                                   \
+    { return functions->CallNonvirtual##_jname##MethodA(this, obj, clazz,   \
+        methodID, args); }
+
+#define CALL_NONVIRT_TYPE(_jtype, _jname)                                   \
+    CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                                \
+    CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                               \
+    CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)
+
+    CALL_NONVIRT_TYPE(jobject, Object)
+    CALL_NONVIRT_TYPE(jboolean, Boolean)
+    CALL_NONVIRT_TYPE(jbyte, Byte)
+    CALL_NONVIRT_TYPE(jchar, Char)
+    CALL_NONVIRT_TYPE(jshort, Short)
+    CALL_NONVIRT_TYPE(jint, Int)
+    CALL_NONVIRT_TYPE(jlong, Long)
+    CALL_NONVIRT_TYPE(jfloat, Float)
+    CALL_NONVIRT_TYPE(jdouble, Double)
+
+    void CallNonvirtualVoidMethod(jobject obj, jclass clazz,
+        jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args);
+        va_end(args);
+    }
+    void CallNonvirtualVoidMethodV(jobject obj, jclass clazz,
+        jmethodID methodID, va_list args)
+    { functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args); }
+    void CallNonvirtualVoidMethodA(jobject obj, jclass clazz,
+        jmethodID methodID, jvalue* args)
+    { functions->CallNonvirtualVoidMethodA(this, obj, clazz, methodID, args); }
+
+    jfieldID GetFieldID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetFieldID(this, clazz, name, sig); }
+
+    jobject GetObjectField(jobject obj, jfieldID fieldID)
+    { return functions->GetObjectField(this, obj, fieldID); }
+    jboolean GetBooleanField(jobject obj, jfieldID fieldID)
+    { return functions->GetBooleanField(this, obj, fieldID); }
+    jbyte GetByteField(jobject obj, jfieldID fieldID)
+    { return functions->GetByteField(this, obj, fieldID); }
+    jchar GetCharField(jobject obj, jfieldID fieldID)
+    { return functions->GetCharField(this, obj, fieldID); }
+    jshort GetShortField(jobject obj, jfieldID fieldID)
+    { return functions->GetShortField(this, obj, fieldID); }
+    jint GetIntField(jobject obj, jfieldID fieldID)
+    { return functions->GetIntField(this, obj, fieldID); }
+    jlong GetLongField(jobject obj, jfieldID fieldID)
+    { return functions->GetLongField(this, obj, fieldID); }
+    jfloat GetFloatField(jobject obj, jfieldID fieldID)
+    { return functions->GetFloatField(this, obj, fieldID); }
+    jdouble GetDoubleField(jobject obj, jfieldID fieldID)
+    { return functions->GetDoubleField(this, obj, fieldID); }
+
+    void SetObjectField(jobject obj, jfieldID fieldID, jobject value)
+    { functions->SetObjectField(this, obj, fieldID, value); }
+    void SetBooleanField(jobject obj, jfieldID fieldID, jboolean value)
+    { functions->SetBooleanField(this, obj, fieldID, value); }
+    void SetByteField(jobject obj, jfieldID fieldID, jbyte value)
+    { functions->SetByteField(this, obj, fieldID, value); }
+    void SetCharField(jobject obj, jfieldID fieldID, jchar value)
+    { functions->SetCharField(this, obj, fieldID, value); }
+    void SetShortField(jobject obj, jfieldID fieldID, jshort value)
+    { functions->SetShortField(this, obj, fieldID, value); }
+    void SetIntField(jobject obj, jfieldID fieldID, jint value)
+    { functions->SetIntField(this, obj, fieldID, value); }
+    void SetLongField(jobject obj, jfieldID fieldID, jlong value)
+    { functions->SetLongField(this, obj, fieldID, value); }
+    void SetFloatField(jobject obj, jfieldID fieldID, jfloat value)
+    { functions->SetFloatField(this, obj, fieldID, value); }
+    void SetDoubleField(jobject obj, jfieldID fieldID, jdouble value)
+    { functions->SetDoubleField(this, obj, fieldID, value); }
+
+    jmethodID GetStaticMethodID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetStaticMethodID(this, clazz, name, sig); }
+
+#define CALL_STATIC_TYPE_METHOD(_jtype, _jname)                             \
+    _jtype CallStatic##_jname##Method(jclass clazz, jmethodID methodID,     \
+        ...)                                                                \
+    {                                                                       \
+        _jtype result;                                                      \
+        va_list args;                                                       \
+        va_start(args, methodID);                                           \
+        result = functions->CallStatic##_jname##MethodV(this, clazz,        \
+                    methodID, args);                                        \
+        va_end(args);                                                       \
+        return result;                                                      \
+    }
+#define CALL_STATIC_TYPE_METHODV(_jtype, _jname)                            \
+    _jtype CallStatic##_jname##MethodV(jclass clazz, jmethodID methodID,    \
+        va_list args)                                                       \
+    { return functions->CallStatic##_jname##MethodV(this, clazz, methodID,  \
+        args); }
+#define CALL_STATIC_TYPE_METHODA(_jtype, _jname)                            \
+    _jtype CallStatic##_jname##MethodA(jclass clazz, jmethodID methodID,    \
+        jvalue* args)                                                       \
+    { return functions->CallStatic##_jname##MethodA(this, clazz, methodID,  \
+        args); }
+
+#define CALL_STATIC_TYPE(_jtype, _jname)                                    \
+    CALL_STATIC_TYPE_METHOD(_jtype, _jname)                                 \
+    CALL_STATIC_TYPE_METHODV(_jtype, _jname)                                \
+    CALL_STATIC_TYPE_METHODA(_jtype, _jname)
+
+    CALL_STATIC_TYPE(jobject, Object)
+    CALL_STATIC_TYPE(jboolean, Boolean)
+    CALL_STATIC_TYPE(jbyte, Byte)
+    CALL_STATIC_TYPE(jchar, Char)
+    CALL_STATIC_TYPE(jshort, Short)
+    CALL_STATIC_TYPE(jint, Int)
+    CALL_STATIC_TYPE(jlong, Long)
+    CALL_STATIC_TYPE(jfloat, Float)
+    CALL_STATIC_TYPE(jdouble, Double)
+
+    void CallStaticVoidMethod(jclass clazz, jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        functions->CallStaticVoidMethodV(this, clazz, methodID, args);
+        va_end(args);
+    }
+    void CallStaticVoidMethodV(jclass clazz, jmethodID methodID, va_list args)
+    { functions->CallStaticVoidMethodV(this, clazz, methodID, args); }
+    void CallStaticVoidMethodA(jclass clazz, jmethodID methodID, jvalue* args)
+    { functions->CallStaticVoidMethodA(this, clazz, methodID, args); }
+
+    jfieldID GetStaticFieldID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetStaticFieldID(this, clazz, name, sig); }
+
+    jobject GetStaticObjectField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticObjectField(this, clazz, fieldID); }
+    jboolean GetStaticBooleanField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticBooleanField(this, clazz, fieldID); }
+    jbyte GetStaticByteField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticByteField(this, clazz, fieldID); }
+    jchar GetStaticCharField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticCharField(this, clazz, fieldID); }
+    jshort GetStaticShortField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticShortField(this, clazz, fieldID); }
+    jint GetStaticIntField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticIntField(this, clazz, fieldID); }
+    jlong GetStaticLongField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticLongField(this, clazz, fieldID); }
+    jfloat GetStaticFloatField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticFloatField(this, clazz, fieldID); }
+    jdouble GetStaticDoubleField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticDoubleField(this, clazz, fieldID); }
+
+    void SetStaticObjectField(jclass clazz, jfieldID fieldID, jobject value)
+    { functions->SetStaticObjectField(this, clazz, fieldID, value); }
+    void SetStaticBooleanField(jclass clazz, jfieldID fieldID, jboolean value)
+    { functions->SetStaticBooleanField(this, clazz, fieldID, value); }
+    void SetStaticByteField(jclass clazz, jfieldID fieldID, jbyte value)
+    { functions->SetStaticByteField(this, clazz, fieldID, value); }
+    void SetStaticCharField(jclass clazz, jfieldID fieldID, jchar value)
+    { functions->SetStaticCharField(this, clazz, fieldID, value); }
+    void SetStaticShortField(jclass clazz, jfieldID fieldID, jshort value)
+    { functions->SetStaticShortField(this, clazz, fieldID, value); }
+    void SetStaticIntField(jclass clazz, jfieldID fieldID, jint value)
+    { functions->SetStaticIntField(this, clazz, fieldID, value); }
+    void SetStaticLongField(jclass clazz, jfieldID fieldID, jlong value)
+    { functions->SetStaticLongField(this, clazz, fieldID, value); }
+    void SetStaticFloatField(jclass clazz, jfieldID fieldID, jfloat value)
+    { functions->SetStaticFloatField(this, clazz, fieldID, value); }
+    void SetStaticDoubleField(jclass clazz, jfieldID fieldID, jdouble value)
+    { functions->SetStaticDoubleField(this, clazz, fieldID, value); }
+
+    jstring NewString(const jchar* unicodeChars, jsize len)
+    { return functions->NewString(this, unicodeChars, len); }
+
+    jsize GetStringLength(jstring string)
+    { return functions->GetStringLength(this, string); }
+
+    const jchar* GetStringChars(jstring string, jboolean* isCopy)
+    { return functions->GetStringChars(this, string, isCopy); }
+
+    void ReleaseStringChars(jstring string, const jchar* chars)
+    { functions->ReleaseStringChars(this, string, chars); }
+
+    jstring NewStringUTF(const char* bytes)
+    { return functions->NewStringUTF(this, bytes); }
+
+    jsize GetStringUTFLength(jstring string)
+    { return functions->GetStringUTFLength(this, string); }
+
+    const char* GetStringUTFChars(jstring string, jboolean* isCopy)
+    { return functions->GetStringUTFChars(this, string, isCopy); }
+
+    void ReleaseStringUTFChars(jstring string, const char* utf)
+    { functions->ReleaseStringUTFChars(this, string, utf); }
+
+    jsize GetArrayLength(jarray array)
+    { return functions->GetArrayLength(this, array); }
+
+    jobjectArray NewObjectArray(jsize length, jclass elementClass,
+        jobject initialElement)
+    { return functions->NewObjectArray(this, length, elementClass,
+        initialElement); }
+
+    jobject GetObjectArrayElement(jobjectArray array, jsize index)
+    { return functions->GetObjectArrayElement(this, array, index); }
+
+    void SetObjectArrayElement(jobjectArray array, jsize index, jobject value)
+    { functions->SetObjectArrayElement(this, array, index, value); }
+
+    jbooleanArray NewBooleanArray(jsize length)
+    { return functions->NewBooleanArray(this, length); }
+    jbyteArray NewByteArray(jsize length)
+    { return functions->NewByteArray(this, length); }
+    jcharArray NewCharArray(jsize length)
+    { return functions->NewCharArray(this, length); }
+    jshortArray NewShortArray(jsize length)
+    { return functions->NewShortArray(this, length); }
+    jintArray NewIntArray(jsize length)
+    { return functions->NewIntArray(this, length); }
+    jlongArray NewLongArray(jsize length)
+    { return functions->NewLongArray(this, length); }
+    jfloatArray NewFloatArray(jsize length)
+    { return functions->NewFloatArray(this, length); }
+    jdoubleArray NewDoubleArray(jsize length)
+    { return functions->NewDoubleArray(this, length); }
+
+    jboolean* GetBooleanArrayElements(jbooleanArray array, jboolean* isCopy)
+    { return functions->GetBooleanArrayElements(this, array, isCopy); }
+    jbyte* GetByteArrayElements(jbyteArray array, jboolean* isCopy)
+    { return functions->GetByteArrayElements(this, array, isCopy); }
+    jchar* GetCharArrayElements(jcharArray array, jboolean* isCopy)
+    { return functions->GetCharArrayElements(this, array, isCopy); }
+    jshort* GetShortArrayElements(jshortArray array, jboolean* isCopy)
+    { return functions->GetShortArrayElements(this, array, isCopy); }
+    jint* GetIntArrayElements(jintArray array, jboolean* isCopy)
+    { return functions->GetIntArrayElements(this, array, isCopy); }
+    jlong* GetLongArrayElements(jlongArray array, jboolean* isCopy)
+    { return functions->GetLongArrayElements(this, array, isCopy); }
+    jfloat* GetFloatArrayElements(jfloatArray array, jboolean* isCopy)
+    { return functions->GetFloatArrayElements(this, array, isCopy); }
+    jdouble* GetDoubleArrayElements(jdoubleArray array, jboolean* isCopy)
+    { return functions->GetDoubleArrayElements(this, array, isCopy); }
+
+    void ReleaseBooleanArrayElements(jbooleanArray array, jboolean* elems,
+        jint mode)
+    { functions->ReleaseBooleanArrayElements(this, array, elems, mode); }
+    void ReleaseByteArrayElements(jbyteArray array, jbyte* elems,
+        jint mode)
+    { functions->ReleaseByteArrayElements(this, array, elems, mode); }
+    void ReleaseCharArrayElements(jcharArray array, jchar* elems,
+        jint mode)
+    { functions->ReleaseCharArrayElements(this, array, elems, mode); }
+    void ReleaseShortArrayElements(jshortArray array, jshort* elems,
+        jint mode)
+    { functions->ReleaseShortArrayElements(this, array, elems, mode); }
+    void ReleaseIntArrayElements(jintArray array, jint* elems,
+        jint mode)
+    { functions->ReleaseIntArrayElements(this, array, elems, mode); }
+    void ReleaseLongArrayElements(jlongArray array, jlong* elems,
+        jint mode)
+    { functions->ReleaseLongArrayElements(this, array, elems, mode); }
+    void ReleaseFloatArrayElements(jfloatArray array, jfloat* elems,
+        jint mode)
+    { functions->ReleaseFloatArrayElements(this, array, elems, mode); }
+    void ReleaseDoubleArrayElements(jdoubleArray array, jdouble* elems,
+        jint mode)
+    { functions->ReleaseDoubleArrayElements(this, array, elems, mode); }
+
+    void GetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
+        jboolean* buf)
+    { functions->GetBooleanArrayRegion(this, array, start, len, buf); }
+    void GetByteArrayRegion(jbyteArray array, jsize start, jsize len,
+        jbyte* buf)
+    { functions->GetByteArrayRegion(this, array, start, len, buf); }
+    void GetCharArrayRegion(jcharArray array, jsize start, jsize len,
+        jchar* buf)
+    { functions->GetCharArrayRegion(this, array, start, len, buf); }
+    void GetShortArrayRegion(jshortArray array, jsize start, jsize len,
+        jshort* buf)
+    { functions->GetShortArrayRegion(this, array, start, len, buf); }
+    void GetIntArrayRegion(jintArray array, jsize start, jsize len,
+        jint* buf)
+    { functions->GetIntArrayRegion(this, array, start, len, buf); }
+    void GetLongArrayRegion(jlongArray array, jsize start, jsize len,
+        jlong* buf)
+    { functions->GetLongArrayRegion(this, array, start, len, buf); }
+    void GetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
+        jfloat* buf)
+    { functions->GetFloatArrayRegion(this, array, start, len, buf); }
+    void GetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
+        jdouble* buf)
+    { functions->GetDoubleArrayRegion(this, array, start, len, buf); }
+
+    void SetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
+        const jboolean* buf)
+    { functions->SetBooleanArrayRegion(this, array, start, len, buf); }
+    void SetByteArrayRegion(jbyteArray array, jsize start, jsize len,
+        const jbyte* buf)
+    { functions->SetByteArrayRegion(this, array, start, len, buf); }
+    void SetCharArrayRegion(jcharArray array, jsize start, jsize len,
+        const jchar* buf)
+    { functions->SetCharArrayRegion(this, array, start, len, buf); }
+    void SetShortArrayRegion(jshortArray array, jsize start, jsize len,
+        const jshort* buf)
+    { functions->SetShortArrayRegion(this, array, start, len, buf); }
+    void SetIntArrayRegion(jintArray array, jsize start, jsize len,
+        const jint* buf)
+    { functions->SetIntArrayRegion(this, array, start, len, buf); }
+    void SetLongArrayRegion(jlongArray array, jsize start, jsize len,
+        const jlong* buf)
+    { functions->SetLongArrayRegion(this, array, start, len, buf); }
+    void SetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
+        const jfloat* buf)
+    { functions->SetFloatArrayRegion(this, array, start, len, buf); }
+    void SetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
+        const jdouble* buf)
+    { functions->SetDoubleArrayRegion(this, array, start, len, buf); }
+
+    jint RegisterNatives(jclass clazz, const JNINativeMethod* methods,
+        jint nMethods)
+    { return functions->RegisterNatives(this, clazz, methods, nMethods); }
+
+    jint UnregisterNatives(jclass clazz)
+    { return functions->UnregisterNatives(this, clazz); }
+
+    jint MonitorEnter(jobject obj)
+    { return functions->MonitorEnter(this, obj); }
+
+    jint MonitorExit(jobject obj)
+    { return functions->MonitorExit(this, obj); }
+
+    jint GetJavaVM(JavaVM** vm)
+    { return functions->GetJavaVM(this, vm); }
+
+    void GetStringRegion(jstring str, jsize start, jsize len, jchar* buf)
+    { functions->GetStringRegion(this, str, start, len, buf); }
+
+    void GetStringUTFRegion(jstring str, jsize start, jsize len, char* buf)
+    { return functions->GetStringUTFRegion(this, str, start, len, buf); }
+
+    void* GetPrimitiveArrayCritical(jarray array, jboolean* isCopy)
+    { return functions->GetPrimitiveArrayCritical(this, array, isCopy); }
+
+    void ReleasePrimitiveArrayCritical(jarray array, void* carray, jint mode)
+    { functions->ReleasePrimitiveArrayCritical(this, array, carray, mode); }
+
+    const jchar* GetStringCritical(jstring string, jboolean* isCopy)
+    { return functions->GetStringCritical(this, string, isCopy); }
+
+    void ReleaseStringCritical(jstring string, const jchar* carray)
+    { functions->ReleaseStringCritical(this, string, carray); }
+
+    jweak NewWeakGlobalRef(jobject obj)
+    { return functions->NewWeakGlobalRef(this, obj); }
+
+    void DeleteWeakGlobalRef(jweak obj)
+    { functions->DeleteWeakGlobalRef(this, obj); }
+
+    jboolean ExceptionCheck()
+    { return functions->ExceptionCheck(this); }
+
+    jobject NewDirectByteBuffer(void* address, jlong capacity)
+    { return functions->NewDirectByteBuffer(this, address, capacity); }
+
+    void* GetDirectBufferAddress(jobject buf)
+    { return functions->GetDirectBufferAddress(this, buf); }
+
+    jlong GetDirectBufferCapacity(jobject buf)
+    { return functions->GetDirectBufferCapacity(this, buf); }
+
+    /* added in JNI 1.6 */
+    jobjectRefType GetObjectRefType(jobject obj)
+    { return functions->GetObjectRefType(this, obj); }
+#endif /*__cplusplus*/
+};
+
+
+/*
+ * JNI invocation interface.
+ */
+struct JNIInvokeInterface {
+    void*       reserved0;
+    void*       reserved1;
+    void*       reserved2;
+ 
+    jint        (*DestroyJavaVM)(JavaVM*);
+    jint        (*AttachCurrentThread)(JavaVM*, JNIEnv**, void*);
+    jint        (*DetachCurrentThread)(JavaVM*);
+    jint        (*GetEnv)(JavaVM*, void**, jint);
+    jint        (*AttachCurrentThreadAsDaemon)(JavaVM*, JNIEnv**, void*);
+};
+
+/*
+ * C++ version.
+ */
+struct _JavaVM {
+    const struct JNIInvokeInterface* functions;
+
+#if defined(__cplusplus)
+    jint DestroyJavaVM()
+    { return functions->DestroyJavaVM(this); }
+    jint AttachCurrentThread(JNIEnv** p_env, void* thr_args)
+    { return functions->AttachCurrentThread(this, p_env, thr_args); }
+    jint DetachCurrentThread()
+    { return functions->DetachCurrentThread(this); }
+    jint GetEnv(void** env, jint version)
+    { return functions->GetEnv(this, env, version); }
+    jint AttachCurrentThreadAsDaemon(JNIEnv** p_env, void* thr_args)
+    { return functions->AttachCurrentThreadAsDaemon(this, p_env, thr_args); }
+#endif /*__cplusplus*/
+};
+
+struct JavaVMAttachArgs {
+    jint        version;    /* must be >= JNI_VERSION_1_2 */
+    const char* name;       /* NULL or name of thread as modified UTF-8 str */
+    jobject     group;      /* global ref of a ThreadGroup object, or NULL */
+};
+typedef struct JavaVMAttachArgs JavaVMAttachArgs;
+
+/*
+ * JNI 1.2+ initialization.  (As of 1.6, the pre-1.2 structures are no
+ * longer supported.)
+ */
+typedef struct JavaVMOption {
+    const char* optionString;
+    void*       extraInfo;
+} JavaVMOption;
+
+typedef struct JavaVMInitArgs {
+    jint        version;    /* use JNI_VERSION_1_2 or later */
+
+    jint        nOptions;
+    JavaVMOption* options;
+    jboolean    ignoreUnrecognized;
+} JavaVMInitArgs;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * VM initialization functions.
+ *
+ * Note these are the only symbols exported for JNI by the VM.
+ */
+jint JNI_GetDefaultJavaVMInitArgs(void*);
+jint JNI_CreateJavaVM(JavaVM**, JNIEnv**, void*);
+jint JNI_GetCreatedJavaVMs(JavaVM**, jsize, jsize*);
+
+/*
+ * Prototypes for functions exported by loadable shared libs.  These are
+ * called by JNI, not provided by JNI.
+ */
+jint JNI_OnLoad(JavaVM* vm, void* reserved);
+void JNI_OnUnload(JavaVM* vm, void* reserved);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/*
+ * Manifest constants.
+ */
+#define JNI_FALSE   0
+#define JNI_TRUE    1
+
+#define JNI_VERSION_1_1 0x00010001
+#define JNI_VERSION_1_2 0x00010002
+#define JNI_VERSION_1_4 0x00010004
+#define JNI_VERSION_1_6 0x00010006
+
+#define JNI_OK          (0)         /* no error */
+#define JNI_ERR         (-1)        /* generic error */
+#define JNI_EDETACHED   (-2)        /* thread detached from the VM */
+#define JNI_EVERSION    (-3)        /* JNI version error */
+
+#define JNI_COMMIT      1           /* copy content, do not free buffer */
+#define JNI_ABORT       2           /* free buffer w/o copying back */
+
+/* need these for Windows-aware headers */
+#define JNIIMPORT
+#define JNIEXPORT
+#define JNICALL
+
+#endif /*_JNI_H*/