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| -rw-r--r-- | include/uno/environment.h | 389 | ||||
| -rw-r--r-- | include/uno/environment.hxx | 290 |
2 files changed, 679 insertions, 0 deletions
diff --git a/include/uno/environment.h b/include/uno/environment.h new file mode 100644 index 0000000000..700d9c18e0 --- /dev/null +++ b/include/uno/environment.h @@ -0,0 +1,389 @@ +/* -*- 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 . + */ + +/* + * This file is part of LibreOffice published API. + */ +#ifndef INCLUDED_UNO_ENVIRONMENT_H +#define INCLUDED_UNO_ENVIRONMENT_H + +#include "cppu/cppudllapi.h" +#include "rtl/ustring.h" + +#include <stdarg.h> + +#ifdef __cplusplus +extern "C" +{ +#endif + +struct _uno_ExtEnvironment; +struct _typelib_InterfaceTypeDescription; + +#if defined( _WIN32) +#pragma pack(push, 8) +#endif + +/** The binary specification of a UNO environment. +*/ +typedef struct SAL_DLLPUBLIC_RTTI _uno_Environment +{ + /** reserved for future use (0 if not used) + */ + void * pReserved; + + /** type name of environment + */ + rtl_uString * pTypeName; + + /** free context pointer to be used for specific classes of environments (e.g., a jvm pointer) + */ + void * pContext; + + /** pointer to extended environment (interface registration functionality), if supported + */ + struct _uno_ExtEnvironment * pExtEnv; + + /** Acquires this environment. + + @param pEnv this environment + */ + void (SAL_CALL * acquire)( struct _uno_Environment * pEnv ); + + /** Releases this environment; last release of environment will revoke the environment from + runtime. + + @param pEnv this environment + */ + void (SAL_CALL * release)( struct _uno_Environment * pEnv ); + + /** Acquires this environment weakly. You can only harden a weakly held environment if it + is still acquired hard (acquire()). + + @param pEnv this environment + */ + void (SAL_CALL * acquireWeak)( struct _uno_Environment * pEnv ); + + /** Releases this environment weakly in correspondence to acquireWeak(). + + @param pEnv this environment + */ + void (SAL_CALL * releaseWeak)( struct _uno_Environment * pEnv ); + + /** Makes hard reference out of weak referenced environment. You can only harden a weakly + held environment if it is still acquired hard (acquire()). + + @param ppHardEnv inout hard referenced environment (has to be released via release()) + @param pEnv environment (may be weak referenced) + */ + void (SAL_CALL * harden)( + struct _uno_Environment ** ppHardEnv, + struct _uno_Environment * pEnv ); + + /** Call this function to EXPLICITLY dispose this environment (e.g., release all + interfaces). You may want to call this function before shutting down due to a runtime error. + + @param pEnv this environment + */ + void (SAL_CALL * dispose)( struct _uno_Environment * pEnv ); + + /* ===== the following part will be late initialized by a matching bridge ===== * + * ===== and is NOT for public use. ===== */ + + /** CALLBACK function pointer: Disposing callback function pointer that can be set to get + signalled before the environment is destroyed. + + @param pEnv environment that is being disposed + */ + void (SAL_CALL * environmentDisposing)( struct _uno_Environment * pEnv ); +} uno_Environment; + +/** Generic function pointer declaration to free a proxy object if it is not needed by the + environment anymore. + Any proxy object must register itself on first acquire() call and revoke itself on last + release() call. This can happen several times because the environment caches proxy objects + until the environment explicitly frees the proxy object calling this function. + + @param pEnv environment + @param pProxy proxy pointer +*/ +typedef void (SAL_CALL * uno_freeProxyFunc)( struct _uno_ExtEnvironment * pEnv, void * pProxy ); + +/** Generic function pointer declaration to allocate memory. Used with getRegisteredInterfaces(). + + @param nBytes amount of memory in bytes + @return pointer to allocated memory +*/ +typedef void * (SAL_CALL * uno_memAlloc)( sal_Size nBytes ); + +/** The binary specification of a UNO environment supporting interface registration. +*/ +typedef struct SAL_DLLPUBLIC_RTTI _uno_ExtEnvironment +{ + /** inherits all members of a uno_Environment + */ + uno_Environment aBase; + + /** Registers an interface of this environment. + + @param pEnv this environment + @param ppInterface inout parameter of interface to be registered + @param pOId object id of interface + @param pTypeDescr type description of interface + */ + void (SAL_CALL * registerInterface)( + struct _uno_ExtEnvironment * pEnv, + void ** ppInterface, + rtl_uString * pOId, + struct _typelib_InterfaceTypeDescription * pTypeDescr ); + + /** Registers a proxy interface of this environment that can be reanimated and is freed + explicitly by this environment. + + @param pEnv this environment + @param ppInterface inout parameter of interface to be registered + @param freeProxy function to free proxy object + @param pOId object id of interface + @param pTypeDescr type description of interface + */ + void (SAL_CALL * registerProxyInterface)( + struct _uno_ExtEnvironment * pEnv, + void ** ppProxy, + uno_freeProxyFunc freeProxy, + rtl_uString * pOId, + struct _typelib_InterfaceTypeDescription * pTypeDescr ); + + /** Revokes an interface from this environment. You have to revoke any interface that has + been registered via this method. + + @param pEnv this environment + @param pInterface interface to be revoked + */ + void (SAL_CALL * revokeInterface)( + struct _uno_ExtEnvironment * pEnv, + void * pInterface ); + + /** Provides the object id of a given interface. + + @param ppOut inout oid + @param pInterface interface of object + */ + void (SAL_CALL * getObjectIdentifier)( + struct _uno_ExtEnvironment * pEnv, + rtl_uString ** ppOId, + void * pInterface ); + + /** Retrieves an interface identified by its object id and type from this environment. + Interfaces are retrieved in the same order as they are registered. + + @param pEnv this environment + @param ppInterface inout parameter for the registered interface; (0) if none was found + @param pOId object id of interface to be retrieved + @param pTypeDescr type description of interface to be retrieved + */ + void (SAL_CALL * getRegisteredInterface)( + struct _uno_ExtEnvironment * pEnv, + void ** ppInterface, + rtl_uString * pOId, + struct _typelib_InterfaceTypeDescription * pTypeDescr ); + + /** Returns all currently registered interfaces of this environment. The memory block + allocated might be slightly larger than (*pnLen * sizeof(void *)). + + @param pEnv this environment + @param pppInterfaces out param; pointer to array of interface pointers + @param pnLen out param; length of array + @param memAlloc function for allocating memory that is passed back + */ + void (SAL_CALL * getRegisteredInterfaces)( + struct _uno_ExtEnvironment * pEnv, + void *** pppInterfaces, + sal_Int32 * pnLen, + uno_memAlloc memAlloc ); + + /* ===== the following part will be late initialized by a matching bridge ===== */ + + /** Computes an object id of the given interface; is called by the environment implementation. + + @param pEnv corresponding environment + @param ppOId out param: computed id + @param pInterface an interface + */ + void (SAL_CALL * computeObjectIdentifier)( + struct _uno_ExtEnvironment * pEnv, + rtl_uString ** ppOId, void * pInterface ); + + /** Function to acquire an interface. + + @param pEnv corresponding environment + @param pInterface an interface + */ + void (SAL_CALL * acquireInterface)( + struct _uno_ExtEnvironment * pEnv, + void * pInterface ); + + /** Function to release an interface. + + @param pEnv corresponding environment + @param pInterface an interface + */ + void (SAL_CALL * releaseInterface)( + struct _uno_ExtEnvironment * pEnv, + void * pInterface ); + +} uno_ExtEnvironment; + +#if defined( _WIN32) +#pragma pack(pop) +#endif + +/** Function exported by some bridge library providing acquireInterface(), releaseInterface(); + may set a disposing callback. + + @param pEnv environment to be initialized +*/ +typedef void (SAL_CALL * uno_initEnvironmentFunc)( uno_Environment * pEnv ); +#define UNO_INIT_ENVIRONMENT "uno_initEnvironment" + +#ifdef DISABLE_DYNLOADING +/* We link statically and have just the C++ environment */ +void SAL_CALL CPPU_ENV_uno_initEnvironment( uno_Environment * Env ) + SAL_THROW_EXTERN_C(); + +/* We might also have the Java environment */ +void SAL_CALL java_uno_initEnvironment( uno_Environment * Env ) + SAL_THROW_EXTERN_C(); +#endif + +/** Gets a specific environment. If the specified environment does not exist, then a default one + is created and registered. The environment revokes itself on last release() call. + + @param ppEnv inout parameter of environment; given environment will be released + @param pEnvDcp descriptor of environment + @param pContext some context pointer (e.g., to distinguish java vm; set 0 if not needed) +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_getEnvironment( + uno_Environment ** ppEnv, rtl_uString * pEnvDcp, void * pContext ) + SAL_THROW_EXTERN_C(); + +/** Gets all specified environments. Caller has to release returned environments and free allocated + memory. + + @param pppEnvs out param; pointer to array of environments + @param pnLen out param; length of array + @param memAlloc function for allocating memory that is passed back + @param pEnvDcp descriptor of environments; 0 defaults to all +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_getRegisteredEnvironments( + uno_Environment *** pppEnvs, sal_Int32 * pnLen, uno_memAlloc memAlloc, + rtl_uString * pEnvDcp ) + SAL_THROW_EXTERN_C(); + +/** Creates an environment. The new environment is anonymous (NOT publicly registered/ accessible). + + @param ppEnv out parameter of environment; given environment will be released + @param pEnvDcp descriptor of environment + @param pContext context pointer (e.g., to distinguish java vm); set 0 if not needed +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_createEnvironment( + uno_Environment ** ppEnv, rtl_uString * pEnvDcp, void * pContext ) + SAL_THROW_EXTERN_C(); + +/** Dumps out environment information, i.e. registered interfaces. + + @param stream output stream (FILE *) + @param pEnv environment to be dumped + @param pFilter if not null, filters output +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_dumpEnvironment( + void * stream, uno_Environment * pEnv, const char * pFilter ) + SAL_THROW_EXTERN_C(); +/** Dumps out environment information, i.e. registered interfaces. + + @param stream output stream (FILE *) + @param pEnvDcp descriptor of environment to be dumped + @param pFilter if not null, filters output +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_dumpEnvironmentByName( + void * stream, rtl_uString * pEnvDcp, const char * pFilter ) + SAL_THROW_EXTERN_C(); + + + +/** Returns the current Environment. + In case no Environment has explicitly been entered, a purpose free + default environment gets returned (e.g. the "uno" or "gcc3" Environment). + + @param ppEnv inout parameter; a given environment will be released + @param pTypeName the optional type of the environment, falls back to "uno" + @since UDK 3.2.7 +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_getCurrentEnvironment(uno_Environment ** ppEnv, rtl_uString * pTypeName) + SAL_THROW_EXTERN_C(); + +/** Typedef for variable argument function. + */ +typedef void SAL_CALL uno_EnvCallee(va_list * pParam); + +/** Invoke the passed function in the given environment. + + @param pEnv the target environment + @param pCallee the function to call + @param pParam the parameter pointer passed to the function + @since UDK 3.2.7 + */ +CPPU_DLLPUBLIC void SAL_CALL uno_Environment_invoke_v(uno_Environment * pEnv, uno_EnvCallee * pCallee, va_list * pParam) + SAL_THROW_EXTERN_C(); + +/** Invoke the passed function in the given environment. + + @param pEnv the target environment + @param pCallee the function to call + @param ... the parameters passed to the function + @since UDK 3.2.7 +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_Environment_invoke (uno_Environment * pEnv, uno_EnvCallee * pCallee, ...) + SAL_THROW_EXTERN_C(); + +/** Enter an environment explicitly. + + @param pEnv the environment to enter; NULL leaves all environments + @since UDK 3.2.7 +*/ +CPPU_DLLPUBLIC void SAL_CALL uno_Environment_enter(uno_Environment * pEnv) + SAL_THROW_EXTERN_C(); + +/** Check if a particular environment is currently valid, so + that objects of that environment might be called. + + @param pEnv the environment + @param pReason the reason, if it is not valid + @return 1 == valid, 0 == invalid + @since UDK 3.2.7 +*/ +CPPU_DLLPUBLIC int SAL_CALL uno_Environment_isValid(uno_Environment * pEnv, rtl_uString ** pReason) + SAL_THROW_EXTERN_C(); + +#ifdef __cplusplus +} +#endif + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/include/uno/environment.hxx b/include/uno/environment.hxx new file mode 100644 index 0000000000..8a26e268d6 --- /dev/null +++ b/include/uno/environment.hxx @@ -0,0 +1,290 @@ +/* -*- 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 . + */ + +/* + * This file is part of LibreOffice published API. + */ +#ifndef INCLUDED_UNO_ENVIRONMENT_HXX +#define INCLUDED_UNO_ENVIRONMENT_HXX + +#include "sal/config.h" + +#include <cstddef> + +#include "rtl/alloc.h" +#include "rtl/ustring.hxx" +#include "uno/environment.h" + +#include "uno/lbnames.h" + +namespace com +{ +namespace sun +{ +namespace star +{ +namespace uno +{ + +/** C++ wrapper for binary C uno_Environment. + + @see uno_Environment +*/ +class Environment +{ + /** binary C uno_Environment + */ + uno_Environment * _pEnv; + +public: + /** Returns the current Environment. + + @param typeName the optional type of the Environment, falls back to "uno" in case being empty, + respectively to current C++ Environment. + @since UDK 3.2.7 + */ + inline static Environment getCurrent(rtl::OUString const & typeName = rtl::OUString(CPPU_CURRENT_LANGUAGE_BINDING_NAME)); + + /// @cond INTERNAL + // these are here to force memory de/allocation to sal lib. + static void * SAL_CALL operator new ( size_t nSize ) + { return ::rtl_allocateMemory( nSize ); } + static void SAL_CALL operator delete ( void * pMem ) + { ::rtl_freeMemory( pMem ); } + static void * SAL_CALL operator new ( size_t, void * pMem ) + { return pMem; } + static void SAL_CALL operator delete ( void *, void * ) + {} + /// @endcond + + /** Constructor: acquires given environment + + @param pEnv environment + */ + inline Environment( uno_Environment * pEnv = NULL ); + + /** Gets a specific environment. If the specified environment does not exist, then a default one + is created and registered. + + @param envDcp descriptor of the environment + @param pContext context pointer + */ + inline explicit Environment( rtl::OUString const & envDcp, void * pContext = NULL ); + + + /** Copy constructor: acquires given environment + + @param rEnv another environment + */ + inline Environment( const Environment & rEnv ); + +#if defined LIBO_INTERNAL_ONLY + Environment(Environment && other) noexcept : _pEnv(other._pEnv) + { other._pEnv = nullptr; } +#endif + + /** Destructor: releases a set environment. + */ + inline ~Environment(); + + /** Sets a given environment, i.e. acquires given one and releases a set one. + + @param pEnv another environment + @return this environment + */ + inline Environment & SAL_CALL operator = ( uno_Environment * pEnv ); + /** Sets a given environment, i.e. acquires given one and releases a set one. + + @param rEnv another environment + @return this environment + */ + Environment & SAL_CALL operator = ( const Environment & rEnv ) + { return operator = ( rEnv._pEnv ); } + +#if defined LIBO_INTERNAL_ONLY + Environment & operator =(Environment && other) { + if (_pEnv != nullptr) { + (*_pEnv->release)(_pEnv); + } + _pEnv = other._pEnv; + other._pEnv = nullptr; + return *this; + } +#endif + + /** Provides UNacquired pointer to the set C environment. + + @return UNacquired pointer to the C environment struct + */ + uno_Environment * SAL_CALL get() const + { return _pEnv; } + + /** Gets type name of set environment. + + @return type name of set environment + */ + ::rtl::OUString SAL_CALL getTypeName() const + { return _pEnv->pTypeName; } + + /** Gets free context pointer of set environment. + + @return free context pointer of set environment + */ + void * SAL_CALL getContext() const + { return _pEnv->pContext; } + + /** Tests if an environment is set. + + @return true, if an environment is set, false otherwise + */ + bool SAL_CALL is() const + { return (_pEnv != NULL); } + + /** Releases a set environment. + */ + inline void SAL_CALL clear(); + + /** Invoke the passed function in this environment. + + @param pCallee the function to call + @param pParam the parameter pointer to be passed to the function + @since UDK 3.2.7 + */ + inline void SAL_CALL invoke_v(uno_EnvCallee * pCallee, va_list * pParam) const; + + /** Invoke the passed function in this environment. + + @param pCallee the function to call + @param ... the parameters to be passed to the function + @since UDK 3.2.7 + */ + inline void SAL_CALL invoke(uno_EnvCallee * pCallee, ...) const; + + /** Enter this environment explicitly. + + @since UDK 3.2.7 + */ + inline void SAL_CALL enter() const; + + /** Checks, if it is valid to currently call objects + belonging to this environment. + + @since UDK 3.2.7 + */ + inline int SAL_CALL isValid(rtl::OUString * pReason) const; +}; + +inline Environment::Environment( uno_Environment * pEnv ) + : _pEnv( pEnv ) +{ + if (_pEnv) + (*_pEnv->acquire)( _pEnv ); +} + +inline Environment::Environment( rtl::OUString const & rEnvDcp, void * pContext ) + : _pEnv(NULL) +{ + uno_getEnvironment(&_pEnv, rEnvDcp.pData, pContext); +} + +inline Environment::Environment( const Environment & rEnv ) + : _pEnv( rEnv._pEnv ) +{ + if (_pEnv) + (*_pEnv->acquire)( _pEnv ); +} + +inline Environment::~Environment() +{ + if (_pEnv) + (*_pEnv->release)( _pEnv ); +} + +inline void Environment::clear() +{ + if (_pEnv) + { + (*_pEnv->release)( _pEnv ); + _pEnv = NULL; + } +} + +inline Environment & Environment::operator = ( uno_Environment * pEnv ) +{ + if (pEnv != _pEnv) + { + if (pEnv) + (*pEnv->acquire)( pEnv ); + if (_pEnv) + (*_pEnv->release)( _pEnv ); + _pEnv = pEnv; + } + return *this; +} + +inline void SAL_CALL Environment::invoke_v(uno_EnvCallee * pCallee, va_list * pParam) const +{ + if (_pEnv) + uno_Environment_invoke_v(_pEnv, pCallee, pParam); +} + +inline void SAL_CALL Environment::invoke(uno_EnvCallee * pCallee, ...) const +{ + if (_pEnv) + { + va_list param; + + va_start(param, pCallee); + uno_Environment_invoke_v(_pEnv, pCallee, ¶m); + va_end(param); + } + +} + +inline void SAL_CALL Environment::enter() const +{ + uno_Environment_enter(_pEnv); +} + +inline int SAL_CALL Environment::isValid(rtl::OUString * pReason) const +{ + return uno_Environment_isValid(_pEnv, &pReason->pData); +} + +inline Environment Environment::getCurrent(rtl::OUString const & typeName) +{ + Environment environment; + + uno_Environment * pEnv = NULL; + uno_getCurrentEnvironment(&pEnv, typeName.pData); + environment = pEnv; + if (pEnv) + pEnv->release(pEnv); + + return environment; +} + +} +} +} +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |