pgmthrd.cpp

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C++ 代码 · 共 56 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include "cpplib.h"
#include "rtexcept.h"


extern "C"
THREAD_CTL* CPPLIB( pgm_thread )// LOCATE THREAD_CTL FOR PROGRAM (.EXE)
    ( void )
{
    THREAD_CTL* retn;           // PGM THREAD (first WATCOM .EXE, .DLL active)

//
// is thread_data offset from fs ?
//
    retn = &_RWD_ThreadData;
    if( ! retn->flags.executable ) {
        retn = retn->call_base;
        if( retn == 0 || ! retn->flags.executable ) {
            RW_DTREG* not_used;
            retn = ThreadLookup( &not_used );
        }
    }
    return retn;
}