0c17712465
Change-Id: I9a2ef4370136b0f26ae3590f358025e7d89f30d2 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134757 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <cassert>
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#include <jvmaccess/virtualmachine.hxx>
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#include <sal/log.hxx>
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#include <utility>
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using jvmaccess::VirtualMachine;
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VirtualMachine::AttachGuard::CreationException::CreationException()
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{}
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VirtualMachine::AttachGuard::CreationException::CreationException(
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CreationException const &)
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{}
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VirtualMachine::AttachGuard::CreationException &
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VirtualMachine::AttachGuard::CreationException::operator =(
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CreationException const &)
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{
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return *this;
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}
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VirtualMachine::AttachGuard::AttachGuard(
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rtl::Reference< VirtualMachine > xMachine):
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m_xMachine(std::move(xMachine))
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{
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assert(m_xMachine.is());
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m_pEnvironment = m_xMachine->attachThread(&m_bDetach);
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if (m_pEnvironment == nullptr)
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throw CreationException();
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}
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VirtualMachine::AttachGuard::~AttachGuard()
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{
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if (m_bDetach)
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m_xMachine->detachThread();
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}
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VirtualMachine::VirtualMachine(JavaVM * pVm, int nVersion, bool bDestroy,
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JNIEnv const * pMainThreadEnv):
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m_pVm(pVm), m_nVersion(nVersion), m_bDestroy(bDestroy)
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{
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(void) pMainThreadEnv; // avoid warnings
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assert(pVm != nullptr);
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assert(nVersion >= JNI_VERSION_1_2);
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assert(pMainThreadEnv);
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}
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VirtualMachine::~VirtualMachine()
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{
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if (m_bDestroy)
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{
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// Do not destroy the VM. Under Java 1.3, the AWT event loop thread is
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// not a daemon thread and is never terminated, so that calling
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// DestroyJavaVM (waiting for all non-daemon threads to terminate) hangs
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// forever.
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/*
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jint n = m_pVm->DestroyJavaVM();
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SAL_WARN_IF(n != JNI_OK, "jvmaccess", "JNI: DestroyJavaVM failed");
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*/
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}
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}
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JNIEnv * VirtualMachine::attachThread(bool * pAttached) const
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{
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assert(pAttached != nullptr && "bad parameter");
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JNIEnv * pEnv;
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jint n = m_pVm->GetEnv(reinterpret_cast< void ** >(&pEnv), m_nVersion);
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SAL_WARN_IF(
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n != JNI_OK && n != JNI_EDETACHED, "jvmaccess", "JNI: GetEnv failed");
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if (pEnv == nullptr)
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{
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if (m_pVm->AttachCurrentThread
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(
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#ifndef ANDROID
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reinterpret_cast< void ** >(&pEnv),
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#else
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// The Android <jni.h> has AttachCurrentThread() taking a
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// JNIEnv** and not void **
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&pEnv,
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#endif
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nullptr)
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!= JNI_OK)
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return nullptr;
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*pAttached = true;
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}
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else
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*pAttached = false;
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return pEnv;
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}
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void VirtualMachine::detachThread() const
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{
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jint n = m_pVm->DetachCurrentThread();
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SAL_WARN_IF(n != JNI_OK, "jvmaccess", "JNI: DetachCurrentThread failed");
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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