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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) SAL_THROW_EXTERN_C()
+{
+ 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) SAL_THROW_EXTERN_C()
+{
+ 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)
+ SAL_THROW_EXTERN_C()
+{
+ 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) SAL_THROW_EXTERN_C()
+{
+ 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)
+ SAL_THROW_EXTERN_C()
+{
+ 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) SAL_THROW_EXTERN_C()
+{
+ 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)
+ SAL_THROW_EXTERN_C()
+{
+ 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)
+ SAL_THROW_EXTERN_C()
+{
+ Pool * p = reinterpret_cast< Pool * >(pool);
+ uno_threadpool_destroy(p->pool);
+ delete p;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */