rocksdb/java/rocksjni/jnicallback.h

33 lines
984 B
C++

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// This file implements the callback "bridge" between Java and C++ for
// JNI Callbacks from C++ to sub-classes or org.rocksdb.RocksCallbackObject
#ifndef JAVA_ROCKSJNI_JNICALLBACK_H_
#define JAVA_ROCKSJNI_JNICALLBACK_H_
#include <jni.h>
#include "rocksdb/rocksdb_namespace.h"
namespace ROCKSDB_NAMESPACE {
class JniCallback {
public:
JniCallback(JNIEnv* env, jobject jcallback_obj);
virtual ~JniCallback();
const jobject& GetJavaObject() const { return m_jcallback_obj; }
protected:
JavaVM* m_jvm;
jobject m_jcallback_obj;
JNIEnv* getJniEnv(jboolean* attached) const;
void releaseJniEnv(jboolean& attached) const;
};
} // namespace ROCKSDB_NAMESPACE
#endif // JAVA_ROCKSJNI_JNICALLBACK_H_