| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #include "jvmaccess/virtualmachine.hxx" |
| |
| #include "osl/diagnose.h" |
| |
| using jvmaccess::VirtualMachine; |
| |
| VirtualMachine::AttachGuard::CreationException::CreationException() |
| {} |
| |
| VirtualMachine::AttachGuard::CreationException::CreationException( |
| CreationException const &) |
| {} |
| |
| VirtualMachine::AttachGuard::CreationException::~CreationException() |
| {} |
| |
| VirtualMachine::AttachGuard::CreationException & |
| VirtualMachine::AttachGuard::CreationException::operator =( |
| CreationException const &) |
| { |
| return *this; |
| } |
| |
| VirtualMachine::AttachGuard::AttachGuard( |
| rtl::Reference< VirtualMachine > const & rMachine): |
| m_xMachine(rMachine) |
| { |
| OSL_ENSURE(m_xMachine.is(), "bad parameter"); |
| m_pEnvironment = m_xMachine->attachThread(&m_bDetach); |
| if (m_pEnvironment == 0) |
| throw CreationException(); |
| } |
| |
| VirtualMachine::AttachGuard::~AttachGuard() |
| { |
| if (m_bDetach) |
| m_xMachine->detachThread(); |
| } |
| |
| VirtualMachine::VirtualMachine(JavaVM * pVm, int nVersion, bool bDestroy, |
| JNIEnv * pMainThreadEnv): |
| m_pVm(pVm), m_nVersion(nVersion), m_bDestroy(bDestroy) |
| { |
| (void) pMainThreadEnv; // avoid warnings |
| #ifdef SOLAR_JAVA |
| OSL_ENSURE(pVm != 0 && nVersion >= JNI_VERSION_1_2 && pMainThreadEnv != 0, |
| "bad parameter"); |
| #endif |
| } |
| |
| VirtualMachine::~VirtualMachine() |
| { |
| if (m_bDestroy) |
| { |
| // Do not destroy the VM. Under Java 1.3, the AWT event loop thread is |
| // not a daemon thread and is never terminated, so that calling |
| // DestroyJavaVM (waiting for all non-daemon threads to terminate) hangs |
| // forever. |
| /* |
| jint n = m_pVm->DestroyJavaVM(); |
| OSL_ENSURE(n == JNI_OK, "JNI: DestroyJavaVM failed"); |
| */ |
| } |
| } |
| |
| JNIEnv * VirtualMachine::attachThread(bool * pAttached) const |
| { |
| #ifndef SOLAR_JAVA |
| return 0; |
| #else |
| OSL_ENSURE(pAttached != 0, "bad parameter"); |
| JNIEnv * pEnv; |
| jint n = m_pVm->GetEnv(reinterpret_cast< void ** >(&pEnv), m_nVersion); |
| if (n != JNI_OK && n != JNI_EDETACHED) { |
| OSL_ENSURE(false, "JNI: GetEnv failed"); |
| } |
| if (pEnv == 0) |
| { |
| if (m_pVm->AttachCurrentThread(reinterpret_cast< void ** >(&pEnv), 0) |
| != JNI_OK) |
| return 0; |
| *pAttached = true; |
| } |
| else |
| *pAttached = false; |
| return pEnv; |
| #endif |
| } |
| |
| void VirtualMachine::detachThread() const |
| { |
| #ifdef SOLAR_JAVA |
| if (m_pVm->DetachCurrentThread() != JNI_OK) { |
| OSL_ENSURE(false, "JNI: DetachCurrentThread failed"); |
| } |
| #endif |
| } |