ncurses/tinfo/use_screen.c

/****************************************************************************
 * Copyright 2018,2020 Thomas E. Dickey                                     *
 * Copyright 2007-2009,2016 Free Software Foundation, Inc.                  *
 *                                                                          *
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 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 ****************************************************************************/

/****************************************************************************
 *     Author: Thomas E. Dickey                        2007                 *
 ****************************************************************************/

#include <curses.priv.h>

MODULE_ID("$Id: use_screen.c,v 1.12 2020/02/02 23:34:34 tom Exp $")

NCURSES_EXPORT(int)
use_screen(SCREEN *screen, NCURSES_SCREEN_CB func, void *data)
{
    SCREEN *save_SP;
    int code = OK;
    TR_FUNC_BFR(1);

    T((T_CALLED("use_screen(%p,%s,%p)"),
       (void *) screen,
       TR_FUNC_ARG(0, func),
       (void *) data));

    /*
     * FIXME - add a flag so a given thread can check if _it_ has already
     * recurred through this point, return an error if so.
     */
    _nc_lock_global(curses);
    save_SP = CURRENT_SCREEN;
    set_term(screen);

    code = func(screen, data);

    set_term(save_SP);
    _nc_unlock_global(curses);
    returnCode(code);
}