utils.h

/*
 * Copyright 2019 GridGain Systems, Inc. and Contributors.
 *
 * Licensed under the GridGain Community Edition License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.gridgain.com/products/software/community-edition/gridgain-community-edition-license
 *
 * 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.
 */
#ifndef _IGNITE_JNI_UTILS
#define _IGNITE_JNI_UTILS
 
#include <string>
 
#include <ignite/common/common.h>
#include <ignite/common/concurrent.h>
#include <ignite/jni/java.h>
 
namespace ignite
{
    namespace jni
    {
        class AttachHelper 
        {
        public:
            ~AttachHelper();
 
            static void OnThreadAttach();
        };
 
        class IGNITE_IMPORT_EXPORT JavaGlobalRef
        {
        public:
            JavaGlobalRef() :
                obj(NULL)
            {
                // No-op.
            }
 
            JavaGlobalRef(common::concurrent::SharedPointer<java::JniContext>& ctx, jobject obj)
                : obj(NULL)
            {
                Init(ctx, obj);
            }
 
            JavaGlobalRef(const JavaGlobalRef& other)
                : obj(NULL)
            {
                Init(other.ctx, other.obj);
            }
 
            JavaGlobalRef& operator=(const JavaGlobalRef& other)
            {
                if (this != &other)
                {
                    java::JniContext::Release(obj);
 
                    Init(other.ctx, other.obj);
                }
 
                return *this;
            }
 
            ~JavaGlobalRef()
            {
                java::JniContext::Release(obj);
            }
 
            jobject Get()
            {
                return obj;
            }
 
        private:
            void Init(const common::concurrent::SharedPointer<java::JniContext>& ctx0, jobject obj0) {
                ctx = ctx0;
 
                if (ctx.IsValid())
                    this->obj = ctx.Get()->Acquire(obj0);
            }
 
            common::concurrent::SharedPointer<java::JniContext> ctx;
 
            jobject obj;
        };
 
        IGNITE_IMPORT_EXPORT std::string FindJvmLibrary(const std::string& path);
 
        IGNITE_IMPORT_EXPORT bool LoadJvmLibrary(const std::string& path);
 
        IGNITE_IMPORT_EXPORT std::string CreateIgniteHomeClasspath(const std::string& home, bool forceTest);
 
        IGNITE_IMPORT_EXPORT std::string CreateIgniteClasspath(const std::string& usrCp, const std::string& home);
 
        IGNITE_IMPORT_EXPORT std::string ResolveIgniteHome(const std::string& path = "");
    }
}
 
#endif //_IGNITE_JNI_UTILS