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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <string.h>
#include <jvmaccess/virtualmachine.hxx>
#include <rtl/byteseq.h>
#include <rtl/byteseq.hxx>
#include <rtl/ref.hxx>
#include <sal/types.h>
#include <uno/threadpool.h>
#include <jni.h>
#include <new>
#include <utility>
/* The native implementation part of
* jurt/com/sun/star/lib/uno/environments/remote/NativeThreadPool.java.
*/
namespace {
struct Pool {
Pool(rtl::Reference< jvmaccess::VirtualMachine > theVirtualMachine,
jmethodID theExecute, uno_ThreadPool thePool):
virtualMachine(std::move(theVirtualMachine)), execute(theExecute), pool(thePool) {}
rtl::Reference< jvmaccess::VirtualMachine > virtualMachine;
jmethodID execute;
uno_ThreadPool pool;
};
struct Job {
Job(Pool * thePool, jobject theJob): pool(thePool), job(theJob) {}
Pool * pool;
jobject job;
};
void throwOutOfMemory(JNIEnv * env) {
jclass c = env->FindClass("java/lang/OutOfMemoryError");
if (c != nullptr) {
env->ThrowNew(c, "");
}
}
}
extern "C" {
static void executeRequest(void * data) {
Job * job = static_cast< Job * >(data);
try {
jvmaccess::VirtualMachine::AttachGuard guard(job->pool->virtualMachine);
JNIEnv * env = guard.getEnvironment();
// Failure of the following Job.execute Java call is ignored; if that
// call fails, it should be due to a java.lang.Error, which is not
// handled well, anyway:
env->CallObjectMethod(job->job, job->pool->execute);
env->DeleteGlobalRef(job->job);
delete job;
} catch (const jvmaccess::VirtualMachine::AttachGuard::CreationException &) {
//TODO: DeleteGlobalRef(job->job)
delete job;
}
}
}
extern "C" SAL_JNI_EXPORT jbyteArray JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_threadId(
JNIEnv * env, SAL_UNUSED_PARAMETER jclass) noexcept
{
sal_Sequence * s = nullptr;
uno_getIdOfCurrentThread(&s); //TODO: out of memory
uno_releaseIdFromCurrentThread();
rtl::ByteSequence seq(s);
rtl_byte_sequence_release(s);
sal_Int32 n = seq.getLength();
jbyteArray a = env->NewByteArray(n);
// sal_Int32 and jsize are compatible here
if (a == nullptr) {
return nullptr;
}
void * p = env->GetPrimitiveArrayCritical(a, nullptr);
if (p == nullptr) {
return nullptr;
}
memcpy(p, seq.getConstArray(), n);
// sal_Int8 and jbyte ought to be compatible
env->ReleasePrimitiveArrayCritical(a, p, 0);
return a;
}
extern "C" SAL_JNI_EXPORT jlong JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_create(
JNIEnv * env, SAL_UNUSED_PARAMETER jclass) noexcept
{
JavaVM * vm;
if (env->GetJavaVM(&vm) != JNI_OK) { //TODO: no Java exception raised?
jclass c = env->FindClass("java/lang/RuntimeException");
if (c != nullptr) {
env->ThrowNew(c, "JNI GetJavaVM failed");
}
return 0;
}
jclass c = env->FindClass("com/sun/star/lib/uno/environments/remote/Job");
if (c == nullptr) {
return 0;
}
jmethodID execute = env->GetMethodID(c, "execute", "()Ljava/lang/Object;");
if (execute == nullptr) {
return 0;
}
try {
return reinterpret_cast< jlong >(new Pool(
new jvmaccess::VirtualMachine(vm, env->GetVersion(), false, env),
execute, uno_threadpool_create()));
} catch (const std::bad_alloc &) {
throwOutOfMemory(env);
return 0;
}
}
extern "C" SAL_JNI_EXPORT void JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_attach(
SAL_UNUSED_PARAMETER JNIEnv *, SAL_UNUSED_PARAMETER jclass, jlong pool) noexcept
{
uno_threadpool_attach(reinterpret_cast< Pool * >(pool)->pool);
}
extern "C" SAL_JNI_EXPORT jobject JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_enter(
JNIEnv * env, SAL_UNUSED_PARAMETER jclass, jlong pool) noexcept
{
jobject job;
uno_threadpool_enter(
reinterpret_cast< Pool * >(pool)->pool,
reinterpret_cast< void ** >(&job));
if (job == nullptr) {
return nullptr;
}
jobject ref = env->NewLocalRef(job);
env->DeleteGlobalRef(job);
return ref;
}
extern "C" SAL_JNI_EXPORT void JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_detach(
SAL_UNUSED_PARAMETER JNIEnv *, SAL_UNUSED_PARAMETER jclass, jlong pool) noexcept
{
uno_threadpool_detach(reinterpret_cast< Pool * >(pool)->pool);
}
extern "C" SAL_JNI_EXPORT void JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_putJob(
JNIEnv * env, SAL_UNUSED_PARAMETER jclass, jlong pool, jbyteArray threadId,
jobject job, jboolean request, jboolean oneWay) noexcept
{
void * s = env->GetPrimitiveArrayCritical(threadId, nullptr);
if (s == nullptr) {
return;
}
rtl::ByteSequence seq(
static_cast< sal_Int8 * >(s), env->GetArrayLength(threadId));
// sal_Int8 and jbyte ought to be compatible; sal_Int32 and jsize are
// compatible here
//TODO: out of memory
env->ReleasePrimitiveArrayCritical(threadId, s, JNI_ABORT);
Pool * p = reinterpret_cast< Pool * >(pool);
jobject ref = env->NewGlobalRef(job);
if (ref == nullptr) {
return;
}
Job * j = nullptr;
if (request) {
j = new(std::nothrow) Job(p, ref);
if (j == nullptr) {
env->DeleteGlobalRef(ref);
throwOutOfMemory(env);
return;
}
}
uno_threadpool_putJob(
p->pool, seq.getHandle(),
request ? static_cast< void * >(j) : static_cast< void * >(ref),
request ? executeRequest : nullptr, oneWay);
}
extern "C" SAL_JNI_EXPORT void JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_dispose(
SAL_UNUSED_PARAMETER JNIEnv *, SAL_UNUSED_PARAMETER jclass, jlong pool) noexcept
{
uno_threadpool_dispose(reinterpret_cast< Pool * >(pool)->pool);
}
extern "C" SAL_JNI_EXPORT void JNICALL
Java_com_sun_star_lib_uno_environments_remote_NativeThreadPool_destroy(
SAL_UNUSED_PARAMETER JNIEnv *, SAL_UNUSED_PARAMETER jclass, jlong pool) noexcept
{
Pool * p = reinterpret_cast< Pool * >(pool);
uno_threadpool_destroy(p->pool);
delete p;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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