137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "jvmaccess/virtualmachine.hxx"
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#include "osl/diagnose.h"
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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::~CreationException()
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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 > const & rMachine):
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m_xMachine(rMachine)
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{
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OSL_ENSURE(m_xMachine.is(), "bad parameter");
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m_pEnvironment = m_xMachine->attachThread(&m_bDetach);
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if (m_pEnvironment == 0)
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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 * 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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#ifdef SOLAR_JAVA
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OSL_ENSURE(pVm != 0 && nVersion >= JNI_VERSION_1_2 && pMainThreadEnv != 0,
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"bad parameter");
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#endif
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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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OSL_ENSURE(n == JNI_OK, "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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#ifndef SOLAR_JAVA
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(void) pAttached;
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return 0;
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#else
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OSL_ENSURE(pAttached != 0, "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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if (n != JNI_OK && n != JNI_EDETACHED) {
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OSL_FAIL("JNI: GetEnv failed");
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}
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if (pEnv == 0)
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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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0)
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!= JNI_OK)
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return 0;
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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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#endif
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}
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void VirtualMachine::detachThread() const
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{
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#ifdef SOLAR_JAVA
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if (m_pVm->DetachCurrentThread() != JNI_OK) {
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OSL_FAIL("JNI: DetachCurrentThread failed");
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}
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#endif
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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