| /*************************************************************************** |
| * |
| * iosdata.h |
| * |
| * $Id: //stdlib/dev/source/stdlib/iosdata.h#8 $ |
| * |
| *************************************************************************** |
| * |
| * Copyright (c) 1994-2005 Quovadx, Inc., acting through its Rogue Wave |
| * Software division. Licensed 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. |
| * |
| **************************************************************************/ |
| |
| #ifndef _RWSTD_IOSDATA_H_INCLUDED |
| #define _RWSTD_IOSDATA_H_INCLUDED |
| |
| |
| #include <string.h> |
| |
| #include <rw/_iosbase.h> |
| #include <rw/_defs.h> |
| |
| |
| _RWSTD_NAMESPACE (std) { |
| |
| // POD-type |
| struct ios_base::_C_usr_data |
| { |
| struct _C_event_cb { |
| int _C_index; |
| ios_base::event_callback _C_fn; |
| }; |
| |
| typedef void (ios_base::*_C_fire_fun)(ios_base::event, bool); |
| |
| // allocates a 0-initialized chunk of storage |
| static _C_usr_data* _C_alloc (_C_fire_fun); |
| static void _C_dealloc (_C_usr_data*); |
| |
| void *_C_tie; // tied stream object |
| long *_C_iarray; // user long data |
| void* *_C_parray; // user void* data |
| _C_event_cb *_C_cbarray; // array of user-registered callbacks |
| _RWSTD_SIZE_T _C_isize; // size of _C_iarray in elements |
| _RWSTD_SIZE_T _C_psize; // size of _C_parray in elements |
| _RWSTD_SIZE_T _C_cbsize; // size of _C_cbarray in elements |
| |
| // set to point to ios_base::_C_fire_event, used to eliminate |
| // the dependency of the translation unit that defines common |
| // ios_base members on the one that defines rarely used ones |
| _C_fire_fun _C_fire; |
| |
| static _C_usr_data _C_std_usr_data [2]; |
| }; |
| |
| |
| inline /* static */ ios_base::_C_usr_data* |
| ios_base::_C_usr_data::_C_alloc (_C_fire_fun pfire) |
| { |
| _TRY { |
| // rely on 0-initialization of PODs |
| _C_usr_data* const pdata = new _C_usr_data (); |
| |
| #ifdef _RWSTD_NO_NEW_THROWS |
| |
| if (!pdata) |
| return 0; |
| |
| #endif // _RWSTD_NO_NEW_THROWS |
| |
| _RWSTD_ASSERT (0 != pdata); |
| |
| #ifndef _RWSTD_NO_POD_ZERO_INIT |
| |
| // assert that the POD ctor above zeroed out all members |
| _RWSTD_ASSERT (!pdata->_C_tie); |
| _RWSTD_ASSERT (!pdata->_C_iarray); |
| _RWSTD_ASSERT (!pdata->_C_parray); |
| _RWSTD_ASSERT (!pdata->_C_cbarray); |
| _RWSTD_ASSERT (!pdata->_C_isize); |
| _RWSTD_ASSERT (!pdata->_C_psize); |
| _RWSTD_ASSERT (!pdata->_C_cbsize); |
| |
| #else // if defined (_RWSTD_NO_POD_ZERO_INIT) |
| |
| memset (pdata, 0, sizeof *pdata); |
| |
| #endif // _RWSTD_NO_POD_ZERO_INIT |
| |
| pdata->_C_fire = pfire; |
| |
| return pdata; |
| } |
| _CATCH (...) { |
| return 0; |
| } |
| } |
| |
| |
| inline /* static */ void |
| ios_base::_C_usr_data::_C_dealloc (_C_usr_data *ptr) |
| { |
| if (ptr) { |
| operator delete (ptr->_C_iarray); |
| operator delete (ptr->_C_parray); |
| operator delete (ptr->_C_cbarray); |
| |
| if ( ptr != _C_usr_data::_C_std_usr_data |
| && ptr != _C_usr_data::_C_std_usr_data + 1) |
| delete ptr; |
| } |
| } |
| |
| |
| } // namespace std |
| |
| |
| #endif // _RWSTD_IOSDATA_H_INCLUDED |