Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 366 insertions, 0 deletions

diff --git a/include/jvmaccess/classpath.hxx b/include/jvmaccess/classpath.hxx
new file mode 100644
index 0000000000..6a082fc78d
--- /dev/null
+++ b/include/jvmaccess/classpath.hxx
@@ -0,0 +1,88 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_JVMACCESS_CLASSPATH_HXX
+#define INCLUDED_JVMACCESS_CLASSPATH_HXX
+
+#include <sal/config.h>
+
+#if defined __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-attributes"
+#endif
+#include <jni.h>
+#if defined __clang__
+#pragma clang diagnostic pop
+#endif
+
+#include <jvmaccess/jvmaccessdllapi.h>
+
+#include <string_view>
+
+namespace com::sun::star::uno
+{
+class XComponentContext;
+}
+
+namespace com::sun::star::uno
+{
+template <typename> class Reference;
+}
+
+namespace jvmaccess
+{
+/**
+   Helper functions for class path handling.
+ */
+namespace ClassPath
+{
+/**
+   translates a class path into a java.net.URL[] instance.
+
+   @param context
+   a component context; must not be null.
+
+   @param environment
+   a JNI environment; must not be null.
+
+   @param classPath
+   a list of zero or more internal (see the
+   com.sun.star.uri.ExternalUriReferenceTranslator service) URI references,
+   where any space characters (U+0020) are ignored (and, in particular, separate
+   adjacent URI references).  Any vnd.sun.star.expand URL references in the list
+   are expanded using the com.sun.star.util.theMacroExpander singleton of the
+   given context.
+
+   @returns
+   a local reference to a java.net.URL[] instance containing the external (see
+   the com.sun.star.uri.ExternalUriReferenceTranslator service) equivalents of
+   all the URI references in the given classPath.  If null, a (still pending)
+   JNI exception occurred.
+
+   @throws com::sun::star::uno::RuntimeException
+ */
+JVMACCESS_DLLPUBLIC jobjectArray
+translateToUrls(css::uno::Reference<css::uno::XComponentContext> const& context,
+                JNIEnv* environment, std::u16string_view classPath);
+}
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/jvmaccess/jvmaccessdllapi.h b/include/jvmaccess/jvmaccessdllapi.h
new file mode 100644
index 0000000000..1c57d14842
--- /dev/null
+++ b/include/jvmaccess/jvmaccessdllapi.h
@@ -0,0 +1,24 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_JVMACCESS_JVMACCESSDLLAPI_H
+#define INCLUDED_JVMACCESS_JVMACCESSDLLAPI_H
+
+#include <sal/types.h>
+
+#if defined JVMACCESS_DLLIMPLEMENTATION
+#define JVMACCESS_DLLPUBLIC SAL_DLLPUBLIC_EXPORT
+#else
+#define JVMACCESS_DLLPUBLIC SAL_DLLPUBLIC_IMPORT
+#endif
+#define JVMACCESS_DLLPRIVATE SAL_DLLPRIVATE
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/jvmaccess/unovirtualmachine.hxx b/include/jvmaccess/unovirtualmachine.hxx
new file mode 100644
index 0000000000..1b424dba9c
--- /dev/null
+++ b/include/jvmaccess/unovirtualmachine.hxx
@@ -0,0 +1,100 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_JVMACCESS_UNOVIRTUALMACHINE_HXX
+#define INCLUDED_JVMACCESS_UNOVIRTUALMACHINE_HXX
+
+#include <jvmaccess/jvmaccessdllapi.h>
+#include <sal/config.h>
+#include <salhelper/simplereferenceobject.hxx>
+#include <rtl/ref.hxx>
+
+namespace jvmaccess
+{
+class VirtualMachine;
+
+/** An encapsulating wrapper around a Java virtual machine and an appropriate
+    UNO class loader.
+ */
+class JVMACCESS_DLLPUBLIC UnoVirtualMachine final : public salhelper::SimpleReferenceObject
+{
+public:
+    /** An exception indicating failure to create a UnoVirtualMachine.
+     */
+    class JVMACCESS_DLLPUBLIC CreationException final
+    {
+    public:
+        CreationException();
+
+        CreationException(CreationException const&);
+
+        CreationException& operator=(CreationException const&);
+    };
+
+    /** Create a wrapper around a Java virtual machine and an appropriate UNO
+        class loader.
+
+        @param virtualMachine
+        A Java virtual machine wrapper.  Must not be null.
+
+        @param classLoader
+        A local or global JNI reference, relative to the given virtualMachine,
+        to an appropriate UNO class loader instance.  Must not be null.  This
+        parameter should be of type jobject, not void *, but the exact
+        definition of jobject is different for different JDK versions, so that
+        the mangled C++ name of the constructor would depend on the JDK version
+        used at compile time.
+
+        @exception CreationException
+        Thrown in case creation fails (due to a JNI problem).
+     */
+    UnoVirtualMachine(rtl::Reference<jvmaccess::VirtualMachine> virtualMachine, void* classLoader);
+
+    /** Get the Java virtual machine wrapper.
+
+        @return
+        The Java virtual machine wrapper.  Will never be null.
+     */
+    const rtl::Reference<jvmaccess::VirtualMachine>& getVirtualMachine() const;
+
+    /** Get the UNO class loader.
+
+        @return
+        A global JNI reference to the UNO class loader.  (The JNI reference must
+        not be deleted by client code.)  Will never be null.  This should be of
+        type jobject, not void *, but the exact definition of jobject is
+        different for different JDK versions, so that the mangled C++ name of
+        the function would depend on the JDK version used at compile time.
+     */
+    void* getClassLoader() const { return m_classLoader; }
+
+private:
+    UnoVirtualMachine(UnoVirtualMachine const&) = delete;
+    UnoVirtualMachine& operator=(UnoVirtualMachine const&) = delete;
+
+    virtual ~UnoVirtualMachine() override;
+
+    rtl::Reference<jvmaccess::VirtualMachine> m_virtualMachine;
+    void* m_classLoader;
+};
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/jvmaccess/virtualmachine.hxx b/include/jvmaccess/virtualmachine.hxx
new file mode 100644
index 0000000000..e1286e7001
--- /dev/null
+++ b/include/jvmaccess/virtualmachine.hxx
@@ -0,0 +1,154 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_JVMACCESS_VIRTUALMACHINE_HXX
+#define INCLUDED_JVMACCESS_VIRTUALMACHINE_HXX
+
+#include <jvmaccess/jvmaccessdllapi.h>
+#include <rtl/ref.hxx>
+#include <salhelper/simplereferenceobject.hxx>
+
+#if defined __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-attributes"
+#endif
+#include <jni.h>
+#if defined __clang__
+#pragma clang diagnostic pop
+#endif
+
+namespace jvmaccess
+{
+/** An encapsulating wrapper around a Java virtual machine.
+ */
+class JVMACCESS_DLLPUBLIC VirtualMachine final : public salhelper::SimpleReferenceObject
+{
+public:
+    /** A helper to attach a thread to a Java virtual machine.
+
+        @descr
+        Upon construction of a guard the current thread is attached to the
+        virtual machine, and upon destruction of the guard the thread is
+        detached again.  For any one thread, multiple instances of this class
+        may be used in a stack-like fashion (care is taken to only really
+        detach the thread from the virtual machine upon destruction of the guard
+        at the bottom of the stack).
+     */
+    class JVMACCESS_DLLPUBLIC AttachGuard
+    {
+    public:
+        /** An exception indicating failure to create an AttachGuard.
+         */
+        class JVMACCESS_DLLPUBLIC CreationException final
+        {
+        public:
+            CreationException();
+
+            CreationException(CreationException const&);
+
+            CreationException& operator=(CreationException const&);
+        };
+
+        /** Attach the current thread to a virtual machine.
+
+            @param rMachine
+            The virtual machine to attach to.  Must not be a null reference.
+
+            @exception CreationException
+            Thrown in case attaching fails (due to a JNI problem).
+         */
+        explicit AttachGuard(rtl::Reference<VirtualMachine> xMachine);
+
+        /** Detach the current thread from the virtual machine again.
+         */
+        ~AttachGuard();
+
+        /** Get a JNI environment pointer for the current thread.
+
+            @return
+            A valid JNI environment pointer.  Will never be null.
+         */
+        JNIEnv* getEnvironment() const { return m_pEnvironment; }
+
+    private:
+        AttachGuard(AttachGuard const&) = delete;
+        AttachGuard& operator=(AttachGuard const&) = delete;
+
+        rtl::Reference<VirtualMachine> m_xMachine;
+        JNIEnv* m_pEnvironment;
+        bool m_bDetach;
+    };
+
+    /** Create a wrapper around a Java virtual machine.
+
+        @param pVm
+        A JNI pointer to virtual machine.  Must not be null.
+
+        @param nVersion
+        The JNI version of the virtual machine pointed to by pVm.  Must be at
+        least JNI_VERSION_1_2.  This parameter should be of type jint, not int,
+        but at least on some platforms the definition of jint changed from
+        JDK 1.3 (long) to JDK 1.4 (int), so that the mangled C++ name of the
+        constructor would depend on the JDK version used at compile time.
+
+        @param bDestroy
+        Whether to destroy the virtual machine when destructing the wrapper
+        (i.e., whether the wrapper owns the virtual machine pointed to by pVm).
+
+        @param pMainThreadEnv
+        A valid JNI environment pointer for the current thread; must not be
+        null.  The current thread must be "initially attached" to the virtual
+        machine while this constructor is being called (i.e., it must be the
+        thread that has called JNI_CreateJavaVM in case the virtual machine has
+        been started via the JNI Invocation API, and it must not already have
+        called DetachCurrentThread; or it must be executing native code called
+        from a "primordial" virtual machine).  This environment pointer was
+        formerly used to obtain a reference to the thread's current context
+        class loader (java.lang.Thread.getCurrentClassLoader; if later a native
+        thread was attached to the virtual machine, that thread's context class
+        loader would be null, so the AttachGuard first of all set it to the
+        saved value; this feature has been removed again for performance reasons
+        and because the default context class loader is often not useful, so
+        that code relying on a context class loader has to set one explicitly,
+        anyway).  This parameter is currently unused (but may be used again in
+        the future).
+     */
+    VirtualMachine(JavaVM* pVm, int nVersion, bool bDestroy, JNIEnv const* pMainThreadEnv);
+
+private:
+    VirtualMachine(VirtualMachine const&) = delete;
+    VirtualMachine& operator=(VirtualMachine const&) = delete;
+
+    virtual ~VirtualMachine() override;
+
+    JNIEnv* attachThread(bool* pAttached) const;
+
+    void detachThread() const;
+
+    JavaVM* m_pVm;
+    jint m_nVersion;
+    bool m_bDestroy;
+
+    friend class AttachGuard; // to access attachThread, detachThread
+};
+}
+
+#endif // INCLUDED_JVMACCESS_VIRTUALMACHINE_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */