stfsetb.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 67 行

/****************************************************************************
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*                            Open Watcom Project
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*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
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* Description:
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#ifdef __SW_FH
#include "iost.h"
#else
#include "variety.h"
#include <iostream>
#include <streambu>
#endif
#include "lock.h"
#include "stfhdr.h"
#include "liballoc.h"

namespace std {

  // Set up a new reserve area. Delete the old one if necessary. Turn
  // buffering on.

  void streambuf::setb( char *buf, char *ebuf, int autodelete ) {

    __lock_it( __b_lock );
    if( __delete_reserve ) {
        _plib_free( __reserve_base );
    }
    if( (buf == NULL) || (ebuf <= buf) ) {
        __reserve_base     = NULL;
        __reserve_end      = NULL;
        __delete_reserve   = 0;
        __unbuffered_state = 1;
    } else {
        __reserve_base     = buf;
        __reserve_end      = ebuf;
        __delete_reserve   = (char)(autodelete ? 1 : 0);
        __unbuffered_state = 0;
    }
  }

}