new_mode.cpp

C标准库源代码

/***
*newmode.cxx - defines C++ setHandler mode
*
*       Copyright (c) 1994-1997, Microsoft Corporation. All rights reserved.
*
*Purpose:
*       Defines routines to set and to query the C++ new handler mode.
*
*       The new handler mode flag determines whether malloc() failures will
*       call the new() failure handler, or whether malloc will return NULL.
*
*******************************************************************************/

#include <cruntime.h>
#include <new.h>
#include <internal.h>

int __cdecl _set_new_mode( int nhm )
{
    int nhmOld;

    /*
     * The only valid inputs are 0 and 1
     */

    if ( ( nhm & 01 ) != nhm )
        return -1;

    /*
     * Set the new mode and return the old
     */
    nhmOld = _newmode;
    _newmode = nhm;

    return nhmOld;
}

int __cdecl _query_new_mode ( void )
{
    return _newmode;
}