c6d464a9da
Summary: I have manually audited the entire RocksJava code base. Sorry for the large pull-request, I have broken it down into many small atomic commits though. My initial intention was to fix the warnings that appear when running RocksJava on Java 8 with `-Xcheck:jni`, for example when running `make jtest` you would see many errors similar to: ``` WARNING in native method: JNI call made without checking exceptions when required to from CallObjectMethod WARNING in native method: JNI call made without checking exceptions when required to from CallVoidMethod WARNING in native method: JNI call made without checking exceptions when required to from CallStaticVoidMethod ... ``` A few of those warnings still remain, however they seem to come directly from the JVM and are not directly related to RocksJava; I am in contact with the OpenJDK hostpot-dev mailing list about these - http://mail.openjdk.java.net/pipermail/hotspot-dev/2017-February/025981.html. As a result of fixing these, I realised we were not r Closes https://github.com/facebook/rocksdb/pull/1890 Differential Revision: D4591758 Pulled By: siying fbshipit-source-id: 7f7fdf4
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same 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::Statistics methods from Java side.
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#include <stdio.h>
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#include <stdlib.h>
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#include <jni.h>
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#include "include/org_rocksdb_Statistics.h"
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#include "rocksjni/portal.h"
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#include "rocksdb/statistics.h"
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/*
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* Class: org_rocksdb_Statistics
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* Method: getTickerCount0
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* Signature: (IJ)J
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*/
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jlong Java_org_rocksdb_Statistics_getTickerCount0(
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JNIEnv* env, jobject jobj, jint tickerType, jlong handle) {
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auto* st = reinterpret_cast<rocksdb::Statistics*>(handle);
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assert(st != nullptr);
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return st->getTickerCount(static_cast<rocksdb::Tickers>(tickerType));
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}
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/*
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* Class: org_rocksdb_Statistics
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* Method: getHistogramData0
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* Signature: (IJ)Lorg/rocksdb/HistogramData;
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*/
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jobject Java_org_rocksdb_Statistics_getHistogramData0(
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JNIEnv* env, jobject jobj, jint histogramType, jlong handle) {
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auto* st = reinterpret_cast<rocksdb::Statistics*>(handle);
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assert(st != nullptr);
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rocksdb::HistogramData data;
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st->histogramData(static_cast<rocksdb::Histograms>(histogramType),
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&data);
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jclass jclazz = rocksdb::HistogramDataJni::getJClass(env);
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if(jclazz == nullptr) {
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// exception occurred accessing class
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return nullptr;
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}
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jmethodID mid = rocksdb::HistogramDataJni::getConstructorMethodId(
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env);
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if(mid == nullptr) {
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// exception occurred accessing method
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return nullptr;
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}
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return env->NewObject(
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jclazz,
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mid, data.median, data.percentile95,data.percentile99, data.average,
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data.standard_deviation);
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}
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