cli_ure/source/uno_bridge/cli_bridge.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <vcclr.h>
  21 #if !defined WIN32_LEAN_AND_MEAN
  22 # define WIN32_LEAN_AND_MEAN
  23 #endif
  24 #include <windows.h>
  25 #include "uno/environment.hxx"
  26 #include "uno/lbnames.h"
  27 #include "uno/mapping.hxx"
  28 #include "typelib/typedescription.hxx"
  29 #include "rtl/ustring.hxx"
  30 #include <sal/log.hxx>
  31
  32 #include "cli_bridge.h"
  33 #include "cli_proxy.h"
  34
  35 namespace sri= System::Runtime::InteropServices;
  36
  37 namespace cli_uno
  38 {
  39
  40 extern "C"
  41 {
  42 void SAL_CALL Mapping_acquire( uno_Mapping * mapping )
  43     SAL_THROW_EXTERN_C()
  44 {
  45     Mapping const * that = static_cast< Mapping const * >( mapping );
  46      that->m_bridge->acquire();
  47 }
  48
  49 void SAL_CALL Mapping_release( uno_Mapping * mapping )
  50     SAL_THROW_EXTERN_C()
  51 {
  52     Mapping const * that = static_cast< Mapping const * >( mapping );
  53     that->m_bridge->release();
  54 }
  55
  56
  57 void SAL_CALL Mapping_cli2uno(
  58     uno_Mapping * mapping, void ** ppOut,
  59     void * pIn, typelib_InterfaceTypeDescription * td )
  60     SAL_THROW_EXTERN_C()
  61 {
  62     uno_Interface ** ppUnoI = (uno_Interface **)ppOut;
  63     intptr_t  cliI = (intptr_t)pIn;
  64
  65     OSL_ENSURE( ppUnoI && td, "### null ptr!" );
  66
  67      if (0 != *ppUnoI)
  68      {
  69          uno_Interface * pUnoI = *(uno_Interface **)ppUnoI;
  70          (*pUnoI->release)( pUnoI );
  71          *ppUnoI = 0;
  72      }
  73     try
  74     {
  75         Mapping const * that = static_cast< Mapping const * >( mapping );
  76         Bridge * bridge = that->m_bridge;
  77
  78         if (0 != cliI)
  79         {
  80             System::Object^ cliObj= sri::GCHandle::FromIntPtr(IntPtr(cliI)).Target;
  81             (*ppOut)= bridge->map_cli2uno(cliObj, (typelib_TypeDescription*) td);
  82         }
  83     }
  84     catch (BridgeRuntimeError & err)
  85     {
  86         (void) err;
  87         SAL_WARN( "cli", "[cli_uno bridge error] " << err.m_message );
  88     }
  89 }
  90
  91 void SAL_CALL Mapping_uno2cli(
  92     uno_Mapping * mapping, void ** ppOut,
  93     void * pIn, typelib_InterfaceTypeDescription * td )
  94     SAL_THROW_EXTERN_C()
  95 {
  96     try
  97     {
  98         OSL_ENSURE( td && ppOut, "### null ptr!" );
  99         OSL_ENSURE( (sizeof(System::Char) == sizeof(sal_Unicode))
 100                     && (sizeof(System::Boolean) == sizeof(sal_Bool))
 101                     && (sizeof(System::SByte) == sizeof(sal_Int8))
 102                     && (sizeof(System::Int16) == sizeof(sal_Int16))
 103                     && (sizeof(System::UInt16) == sizeof(sal_uInt16))
 104                     && (sizeof(System::Int32) == sizeof(sal_Int32))
 105                     && (sizeof(System::UInt32) == sizeof(sal_uInt32))
 106                     && (sizeof(System::Int64) == sizeof(sal_Int64))
 107                     && (sizeof(System::UInt64) == sizeof(sal_uInt64))
 108                     && (sizeof(System::Single) == sizeof(float))
 109                     && (sizeof(System::Double) == sizeof(double)),
 110                     "[cli_uno bridge] incompatible .NET data types");
 111         intptr_t * ppDNetI = (intptr_t *)ppOut;
 112         uno_Interface * pUnoI = (uno_Interface *)pIn;
 113
 114         Mapping const * that = static_cast< Mapping const * >( mapping );
 115         Bridge  * bridge = that->m_bridge;
 116
 117         if (0 != *ppDNetI)
 118         {
 119             sri::GCHandle::FromIntPtr(IntPtr(ppDNetI)).Free();
 120         }
 121
 122         if (0 != pUnoI)
 123         {
 124             System::Object^ cliI=  bridge->map_uno2cli(pUnoI, td);
 125             intptr_t ptr= NULL;
 126             if(cliI)
 127             {
 128                 ptr= sri::GCHandle::ToIntPtr(sri::GCHandle::Alloc(cliI))
 129 #ifdef _WIN64
 130                     .ToInt64();
 131 #else /* defined(_WIN32) */
 132                     .ToInt32();
 133 #endif
 134             }
 135             (*ppOut)= reinterpret_cast<void*>(ptr);
 136         }
 137     }
 138     catch (BridgeRuntimeError & err)
 139     {
 140         (void) err;
 141         SAL_WARN( "cli", "[cli_uno bridge error] " << err.m_message );
 142     }
 143 }
 144
 145
 146 void SAL_CALL Bridge_free( uno_Mapping * mapping )
 147     SAL_THROW_EXTERN_C()
 148 {
 149     Mapping * that = static_cast< Mapping * >( mapping );
 150     delete that->m_bridge;
 151 }
 152
 153 } //extern C
 154 } //namespace
 155
 156 namespace cli_uno
 157 {
 158
 159
 160 /** ToDo
 161     I doubt that the case that the ref count raises from 0 to 1
 162     can occur.  uno_ext_getMapping returns an acquired mapping. Every time
 163     that function is called then a new mapping is created. Following the
 164     rules of ref counted objects, then if the ref count is null no one has
 165     a reference to the object anymore. Hence no one can call acquire. If someone
 166     calls acquire then they must have kept an unacquired pointer which is
 167     illegal.
 168  */
 169 void Bridge::acquire()  const
 170 {
 171     if (1 == osl_atomic_increment( &m_ref ))
 172     {
 173         if (m_registered_cli2uno)
 174         {
 175             uno_Mapping * mapping = const_cast<Mapping*>(&m_cli2uno);
 176             uno_registerMapping(
 177                 const_cast<uno_Mapping**>(&mapping), Bridge_free, m_uno_cli_env, (uno_Environment *)m_uno_env, 0 );
 178         }
 179         else
 180         {
 181             uno_Mapping * mapping = const_cast<Mapping*>(&m_uno2cli);
 182             uno_registerMapping(
 183                 &mapping, Bridge_free, (uno_Environment *)m_uno_env, m_uno_cli_env, 0 );
 184         }
 185     }
 186 }
 187
 188 void Bridge::release() const
 189 {
 190     if (! osl_atomic_decrement( &m_ref ))
 191     {
 192         uno_revokeMapping(
 193             m_registered_cli2uno
 194             ?  const_cast<Mapping*>(&m_cli2uno)
 195             :  const_cast<Mapping*>(&m_uno2cli)  );
 196    }
 197 }
 198
 199 Bridge::Bridge(
 200     uno_Environment * uno_cli_env, uno_ExtEnvironment * uno_env,
 201     bool registered_cli2uno )
 202     : m_ref( 1 ),
 203       m_uno_env( uno_env ),
 204       m_uno_cli_env( uno_cli_env ),
 205       m_registered_cli2uno( registered_cli2uno )
 206 {
 207     OSL_ASSERT( 0 != m_uno_cli_env && 0 != m_uno_env );
 208     (*((uno_Environment *)m_uno_env)->acquire)( (uno_Environment *)m_uno_env );
 209     (*m_uno_cli_env->acquire)( m_uno_cli_env );
 210
 211     // cli2uno
 212     m_cli2uno.acquire = Mapping_acquire;
 213     m_cli2uno.release = Mapping_release;
 214     m_cli2uno.mapInterface = Mapping_cli2uno;
 215     m_cli2uno.m_bridge = this;
 216     // uno2cli
 217     m_uno2cli.acquire = Mapping_acquire;
 218     m_uno2cli.release = Mapping_release;
 219     m_uno2cli.mapInterface = Mapping_uno2cli;
 220     m_uno2cli.m_bridge = this;
 221
 222 }
 223
 224
 225 Bridge::~Bridge()
 226 {
 227     //System::GC::Collect();
 228     (*m_uno_cli_env->release)( m_uno_cli_env );
 229     (*((uno_Environment *)m_uno_env)->release)( (uno_Environment *)m_uno_env );
 230 }
 231
 232
 233 } //namespace cli_uno
 234
 235 extern "C"
 236 {
 237
 238 namespace cli_uno
 239 {
 240
 241 void SAL_CALL cli_env_disposing( uno_Environment * uno_cli_env )
 242     SAL_THROW_EXTERN_C()
 243 {
 244     uno_cli_env->pContext = 0;
 245 }
 246
 247
 248 SAL_DLLPUBLIC_EXPORT void SAL_CALL uno_initEnvironment( uno_Environment * uno_cli_env )
 249     SAL_THROW_EXTERN_C()
 250 {
 251     //ToDo: remove when compiled with .NET 2
 252
 253     // Unclear whether the above comment refers to this whole function
 254     // or a call to __crt_dll_initialize() that used to be here for
 255     // _MSC_VER < 1400
 256
 257     uno_cli_env->environmentDisposing= cli_env_disposing;
 258     uno_cli_env->pExtEnv = 0;
 259     //Set the console to print Trace messages
 260 #if OSL_DEBUG_LEVEL >= 1
 261     System::Diagnostics::Trace::Listeners->
 262             Add( gcnew System::Diagnostics::TextWriterTraceListener(System::Console::Out));
 263 #endif
 264     OSL_ASSERT( 0 == uno_cli_env->pContext );
 265
 266     // We let the Cli_environment leak, since there is no good point where we could destruct it.
 267     //dispose is not used because we would have then also synchronize the calls to proxies. If the
 268     //Cli_environment is disposed, we must prevent all calls, otherwise we may crash at points
 269     //where g_cli_env is accessed.
 270     //When we compile the bridge with .NET 2 then we can again hold g_cli_env as a static gcroot
 271     //member in a unmanaged class, such as Bridge.
 272     CliEnvHolder::g_cli_env = gcnew Cli_environment();
 273 }
 274
 275 SAL_DLLPUBLIC_EXPORT void SAL_CALL uno_ext_getMapping(
 276     uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo )
 277     SAL_THROW_EXTERN_C()
 278 {
 279     OSL_ASSERT( 0 != ppMapping && 0 != pFrom && 0 != pTo );
 280     if (*ppMapping)
 281     {
 282         (*(*ppMapping)->release)( *ppMapping );
 283         *ppMapping = 0;
 284     }
 285
 286
 287     OUString const & from_env_typename = OUString::unacquired(
 288         &pFrom->pTypeName );
 289     OUString const & to_env_typename = OUString::unacquired( &pTo->pTypeName );
 290
 291     uno_Mapping * mapping = 0;
 292
 293     try
 294     {
 295         if ( from_env_typename == UNO_LB_CLI && to_env_typename == UNO_LB_UNO )
 296         {
 297             Bridge * bridge = new Bridge( pFrom, pTo->pExtEnv, true ); // ref count = 1
 298             mapping = &bridge->m_cli2uno;
 299             uno_registerMapping(
 300                 &mapping, Bridge_free, pFrom, (uno_Environment *)pTo->pExtEnv, 0 );
 301         }
 302         else if ( from_env_typename == UNO_LB_UNO && to_env_typename == UNO_LB_CLI )
 303         {
 304             Bridge * bridge = new Bridge( pTo, pFrom->pExtEnv, false ); // ref count = 1
 305             mapping = &bridge->m_uno2cli;
 306             uno_registerMapping(
 307                 &mapping, Bridge_free, (uno_Environment *)pFrom->pExtEnv, pTo, 0 );
 308         }
 309     }
 310     catch (BridgeRuntimeError & err)
 311     {
 312         (void) err;
 313         SAL_WARN( "cli", "[cli_uno bridge error] " << err.m_message );
 314     }
 315     *ppMapping = mapping;
 316 }
 317
 318 }
 319 }
 320
 321 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */