mirror of
https://github.com/facebook/rocksdb.git
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0bf9079d44
Summary: This should give us some performance benefit calling native C++ code. Closes https://github.com/facebook/rocksdb/issues/4786 See https://github.com/evolvedbinary/jni-benchmarks/ for more info. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11882 Reviewed By: pdillinger Differential Revision: D53066207 Pulled By: ajkr fbshipit-source-id: daedef185215d0d8e791cd85bef598900bcb5bf2
107 lines
3.5 KiB
C++
107 lines
3.5 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// This file implements the "bridge" between Java and C++ and enables
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// calling c++ ROCKSDB_NAMESPACE::Checkpoint methods from Java side.
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#include "rocksdb/utilities/checkpoint.h"
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#include <jni.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string>
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#include "include/org_rocksdb_Checkpoint.h"
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#include "rocksdb/db.h"
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#include "rocksjni/cplusplus_to_java_convert.h"
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#include "rocksjni/portal.h"
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/*
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* Class: org_rocksdb_Checkpoint
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* Method: newCheckpoint
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* Signature: (J)J
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*/
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jlong Java_org_rocksdb_Checkpoint_newCheckpoint(JNIEnv* /*env*/,
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jclass /*jclazz*/,
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jlong jdb_handle) {
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auto* db = reinterpret_cast<ROCKSDB_NAMESPACE::DB*>(jdb_handle);
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ROCKSDB_NAMESPACE::Checkpoint* checkpoint;
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ROCKSDB_NAMESPACE::Checkpoint::Create(db, &checkpoint);
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return GET_CPLUSPLUS_POINTER(checkpoint);
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}
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/*
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* Class: org_rocksdb_Checkpoint
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* Method: dispose
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* Signature: (J)V
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*/
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void Java_org_rocksdb_Checkpoint_disposeInternalJni(JNIEnv* /*env*/,
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jclass /*jobj*/,
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jlong jhandle) {
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auto* checkpoint = reinterpret_cast<ROCKSDB_NAMESPACE::Checkpoint*>(jhandle);
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assert(checkpoint != nullptr);
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delete checkpoint;
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}
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/*
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* Class: org_rocksdb_Checkpoint
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* Method: createCheckpoint
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* Signature: (JLjava/lang/String;)V
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*/
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void Java_org_rocksdb_Checkpoint_createCheckpoint(JNIEnv* env, jclass /*jcls*/,
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jlong jcheckpoint_handle,
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jstring jcheckpoint_path) {
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const char* checkpoint_path = env->GetStringUTFChars(jcheckpoint_path, 0);
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if (checkpoint_path == nullptr) {
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// exception thrown: OutOfMemoryError
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return;
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}
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auto* checkpoint =
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reinterpret_cast<ROCKSDB_NAMESPACE::Checkpoint*>(jcheckpoint_handle);
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ROCKSDB_NAMESPACE::Status s = checkpoint->CreateCheckpoint(checkpoint_path);
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env->ReleaseStringUTFChars(jcheckpoint_path, checkpoint_path);
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if (!s.ok()) {
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ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, s);
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}
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}
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/*
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* Class: org_rocksdb_Checkpoint
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* Method: exportColumnFamily
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* Signature: (JJLjava/lang/String;)Lorg/rocksdb/ExportImportFilesMetaData;
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*/
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jlong Java_org_rocksdb_Checkpoint_exportColumnFamily(
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JNIEnv* env, jobject /*jobj*/, jlong jcheckpoint_handle,
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jlong jcolumn_family_handle, jstring jexport_path) {
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const char* export_path = env->GetStringUTFChars(jexport_path, 0);
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if (export_path == nullptr) {
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// exception thrown: OutOfMemoryError
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return 0;
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}
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auto* checkpoint =
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reinterpret_cast<ROCKSDB_NAMESPACE::Checkpoint*>(jcheckpoint_handle);
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auto* column_family_handle =
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reinterpret_cast<ROCKSDB_NAMESPACE::ColumnFamilyHandle*>(
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jcolumn_family_handle);
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ROCKSDB_NAMESPACE::ExportImportFilesMetaData* metadata = nullptr;
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ROCKSDB_NAMESPACE::Status s = checkpoint->ExportColumnFamily(
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column_family_handle, export_path, &metadata);
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env->ReleaseStringUTFChars(jexport_path, export_path);
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if (!s.ok()) {
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ROCKSDB_NAMESPACE::RocksDBExceptionJni::ThrowNew(env, s);
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}
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return GET_CPLUSPLUS_POINTER(metadata);
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}
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