rocksdb/java/rocksjni/env.cc
Adam Retter bb474e9a02 Add missing functionality to RocksJava (#4833)
Summary:
This is my latest round of changes to add missing items to RocksJava. More to come in future PRs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4833

Differential Revision: D14152266

Pulled By: sagar0

fbshipit-source-id: d6cff67e26da06c131491b5cf6911a8cd0db0775
2019-02-22 14:46:46 -08:00

235 lines
6.7 KiB
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 "bridge" between Java and C++ and enables
// calling c++ rocksdb::Env methods from Java side.
#include <jni.h>
#include <vector>
#include "portal.h"
#include "rocksdb/env.h"
#include "include/org_rocksdb_Env.h"
#include "include/org_rocksdb_HdfsEnv.h"
#include "include/org_rocksdb_RocksEnv.h"
#include "include/org_rocksdb_RocksMemEnv.h"
#include "include/org_rocksdb_TimedEnv.h"
/*
* Class: org_rocksdb_Env
* Method: getDefaultEnvInternal
* Signature: ()J
*/
jlong Java_org_rocksdb_Env_getDefaultEnvInternal(
JNIEnv*, jclass) {
return reinterpret_cast<jlong>(rocksdb::Env::Default());
}
/*
* Class: org_rocksdb_RocksEnv
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_RocksEnv_disposeInternal(
JNIEnv*, jobject, jlong jhandle) {
auto* e = reinterpret_cast<rocksdb::Env*>(jhandle);
assert(e != nullptr);
delete e;
}
/*
* Class: org_rocksdb_Env
* Method: setBackgroundThreads
* Signature: (JIB)V
*/
void Java_org_rocksdb_Env_setBackgroundThreads(
JNIEnv*, jobject, jlong jhandle, jint jnum, jbyte jpriority_value) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
rocks_env->SetBackgroundThreads(static_cast<int>(jnum),
rocksdb::PriorityJni::toCppPriority(jpriority_value));
}
/*
* Class: org_rocksdb_Env
* Method: getBackgroundThreads
* Signature: (JB)I
*/
jint Java_org_rocksdb_Env_getBackgroundThreads(
JNIEnv*, jobject, jlong jhandle, jbyte jpriority_value) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
const int num = rocks_env->GetBackgroundThreads(
rocksdb::PriorityJni::toCppPriority(jpriority_value));
return static_cast<jint>(num);
}
/*
* Class: org_rocksdb_Env
* Method: getThreadPoolQueueLen
* Signature: (JB)I
*/
jint Java_org_rocksdb_Env_getThreadPoolQueueLen(
JNIEnv*, jobject, jlong jhandle, jbyte jpriority_value) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
const int queue_len = rocks_env->GetThreadPoolQueueLen(
rocksdb::PriorityJni::toCppPriority(jpriority_value));
return static_cast<jint>(queue_len);
}
/*
* Class: org_rocksdb_Env
* Method: incBackgroundThreadsIfNeeded
* Signature: (JIB)V
*/
void Java_org_rocksdb_Env_incBackgroundThreadsIfNeeded(
JNIEnv*, jobject, jlong jhandle, jint jnum, jbyte jpriority_value) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
rocks_env->IncBackgroundThreadsIfNeeded(static_cast<int>(jnum),
rocksdb::PriorityJni::toCppPriority(jpriority_value));
}
/*
* Class: org_rocksdb_Env
* Method: lowerThreadPoolIOPriority
* Signature: (JB)V
*/
void Java_org_rocksdb_Env_lowerThreadPoolIOPriority(
JNIEnv*, jobject, jlong jhandle, jbyte jpriority_value) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
rocks_env->LowerThreadPoolIOPriority(
rocksdb::PriorityJni::toCppPriority(jpriority_value));
}
/*
* Class: org_rocksdb_Env
* Method: lowerThreadPoolCPUPriority
* Signature: (JB)V
*/
void Java_org_rocksdb_Env_lowerThreadPoolCPUPriority(
JNIEnv*, jobject, jlong jhandle, jbyte jpriority_value) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
rocks_env->LowerThreadPoolCPUPriority(
rocksdb::PriorityJni::toCppPriority(jpriority_value));
}
/*
* Class: org_rocksdb_Env
* Method: getThreadList
* Signature: (J)[Lorg/rocksdb/ThreadStatus;
*/
jobjectArray Java_org_rocksdb_Env_getThreadList(
JNIEnv* env, jobject, jlong jhandle) {
auto* rocks_env = reinterpret_cast<rocksdb::Env*>(jhandle);
std::vector<rocksdb::ThreadStatus> thread_status;
rocksdb::Status s = rocks_env->GetThreadList(&thread_status);
if (!s.ok()) {
// error, throw exception
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return nullptr;
}
// object[]
const jsize len = static_cast<jsize>(thread_status.size());
jobjectArray jthread_status =
env->NewObjectArray(len, rocksdb::ThreadStatusJni::getJClass(env), nullptr);
if (jthread_status == nullptr) {
// an exception occurred
return nullptr;
}
for (jsize i = 0; i < len; ++i) {
jobject jts =
rocksdb::ThreadStatusJni::construct(env, &(thread_status[i]));
env->SetObjectArrayElement(jthread_status, i, jts);
if (env->ExceptionCheck()) {
// exception occurred
env->DeleteLocalRef(jthread_status);
return nullptr;
}
}
return jthread_status;
}
/*
* Class: org_rocksdb_RocksMemEnv
* Method: createMemEnv
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksMemEnv_createMemEnv(
JNIEnv*, jclass, jlong jbase_env_handle) {
auto* base_env = reinterpret_cast<rocksdb::Env*>(jbase_env_handle);
return reinterpret_cast<jlong>(rocksdb::NewMemEnv(base_env));
}
/*
* Class: org_rocksdb_RocksMemEnv
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_RocksMemEnv_disposeInternal(
JNIEnv*, jobject, jlong jhandle) {
auto* e = reinterpret_cast<rocksdb::Env*>(jhandle);
assert(e != nullptr);
delete e;
}
/*
* Class: org_rocksdb_HdfsEnv
* Method: createHdfsEnv
* Signature: (Ljava/lang/String;)J
*/
jlong Java_org_rocksdb_HdfsEnv_createHdfsEnv(
JNIEnv* env, jclass, jstring jfsname) {
jboolean has_exception = JNI_FALSE;
auto fsname = rocksdb::JniUtil::copyStdString(env, jfsname, &has_exception);
if (has_exception == JNI_TRUE) {
// exception occurred
return 0;
}
rocksdb::Env* hdfs_env;
rocksdb::Status s = rocksdb::NewHdfsEnv(&hdfs_env, fsname);
if (!s.ok()) {
// error occurred
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
return reinterpret_cast<jlong>(hdfs_env);
}
/*
* Class: org_rocksdb_HdfsEnv
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_HdfsEnv_disposeInternal(
JNIEnv*, jobject, jlong jhandle) {
auto* e = reinterpret_cast<rocksdb::Env*>(jhandle);
assert(e != nullptr);
delete e;
}
/*
* Class: org_rocksdb_TimedEnv
* Method: createTimedEnv
* Signature: (J)J
*/
jlong Java_org_rocksdb_TimedEnv_createTimedEnv(
JNIEnv*, jclass, jlong jbase_env_handle) {
auto* base_env = reinterpret_cast<rocksdb::Env*>(jbase_env_handle);
return reinterpret_cast<jlong>(rocksdb::NewTimedEnv(base_env));
}
/*
* Class: org_rocksdb_TimedEnv
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_TimedEnv_disposeInternal(
JNIEnv*, jobject, jlong jhandle) {
auto* e = reinterpret_cast<rocksdb::Env*>(jhandle);
assert(e != nullptr);
delete e;
}