mirror of
https://github.com/Aigor44/ncursesw-morphos.git
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582d14ba03
+ fix case where progs/tput is used while sp-funcs is configure; this requires save/restore of out-character function from _nc_prescreen rather than the SCREEN structure (report by Charles Wilson). + fix typo in man/curs_trace.3x which caused incorrect symbolic links + improved configure macros CF_GCC_ATTRIBUTES, CF_PROG_LINT.
361 lines
9.9 KiB
C
361 lines
9.9 KiB
C
/****************************************************************************
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* Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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* and: Juergen Pfeifer *
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****************************************************************************/
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/*
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** lib_data.c
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**
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** Common data that may/may not be allocated, but is referenced globally
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**
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*/
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#include <curses.priv.h>
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MODULE_ID("$Id: lib_data.c,v 1.56 2009/11/21 22:34:17 tom Exp $")
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/*
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* OS/2's native linker complains if we don't initialize public data when
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* constructing a dll (reported by J.J.G.Ripoll).
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*/
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#if USE_REENTRANT
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NCURSES_EXPORT(WINDOW *)
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NCURSES_PUBLIC_VAR(stdscr) (void)
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{
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return CURRENT_SCREEN ? StdScreen(CURRENT_SCREEN) : 0;
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}
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NCURSES_EXPORT(WINDOW *)
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NCURSES_PUBLIC_VAR(curscr) (void)
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{
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return CURRENT_SCREEN ? CurScreen(CURRENT_SCREEN) : 0;
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}
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NCURSES_EXPORT(WINDOW *)
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NCURSES_PUBLIC_VAR(newscr) (void)
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{
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return CURRENT_SCREEN ? NewScreen(CURRENT_SCREEN) : 0;
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}
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#else
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NCURSES_EXPORT_VAR(WINDOW *) stdscr = 0;
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NCURSES_EXPORT_VAR(WINDOW *) curscr = 0;
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NCURSES_EXPORT_VAR(WINDOW *) newscr = 0;
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#endif
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NCURSES_EXPORT_VAR(SCREEN *) _nc_screen_chain = 0;
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/*
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* The variable 'SP' will be defined as a function on systems that cannot link
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* data-only modules, since it is used in a lot of places within ncurses and we
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* cannot guarantee that any application will use any particular function. We
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* put the WINDOW variables in this module, because it appears that any
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* application that uses them will also use 'SP'.
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*
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* This module intentionally does not reference other ncurses modules, to avoid
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* module coupling that increases the size of the executable.
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*/
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#if BROKEN_LINKER
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static SCREEN *my_screen;
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NCURSES_EXPORT(SCREEN *)
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_nc_screen(void)
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{
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return my_screen;
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}
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NCURSES_EXPORT(int)
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_nc_alloc_screen(void)
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{
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return ((my_screen = _nc_alloc_screen_sp()) != 0);
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}
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NCURSES_EXPORT(void)
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_nc_set_screen(SCREEN *sp)
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{
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my_screen = sp;
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}
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#else
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NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data... */
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#endif
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/* *INDENT-OFF* */
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#define CHARS_0s { '\0' }
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#define TGETENT_0 { 0L, FALSE, NULL, NULL, NULL }
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#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 }
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NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
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0, /* have_sigwinch */
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0, /* cleanup_nested */
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FALSE, /* init_signals */
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FALSE, /* init_screen */
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NULL, /* comp_sourcename */
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NULL, /* comp_termtype */
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FALSE, /* have_tic_directory */
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FALSE, /* keep_tic_directory */
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TERMINFO, /* tic_directory */
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NULL, /* dbi_list */
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0, /* dbi_size */
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NULL, /* first_name */
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NULL, /* keyname_table */
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0, /* slk_format */
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NULL, /* safeprint_buf */
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0, /* safeprint_used */
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TGETENT_0s, /* tgetent_cache */
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0, /* tgetent_index */
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0, /* tgetent_sequence */
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#ifndef USE_SP_WINDOWLIST
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0, /* _nc_windowlist */
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#endif
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#if USE_HOME_TERMINFO
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NULL, /* home_terminfo */
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#endif
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#if !USE_SAFE_SPRINTF
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0, /* safeprint_cols */
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0, /* safeprint_rows */
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#endif
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#ifdef TRACE
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FALSE, /* init_trace */
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CHARS_0s, /* trace_fname */
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0, /* trace_level */
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NULL, /* trace_fp */
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NULL, /* tracearg_buf */
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0, /* tracearg_used */
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NULL, /* tracebuf_ptr */
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0, /* tracebuf_used */
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CHARS_0s, /* tracechr_buf */
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NULL, /* tracedmp_buf */
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0, /* tracedmp_used */
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NULL, /* tracetry_buf */
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0, /* tracetry_used */
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{ CHARS_0s, CHARS_0s }, /* traceatr_color_buf */
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0, /* traceatr_color_sel */
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-1, /* traceatr_color_last */
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#if !defined(USE_PTHREADS) && USE_REENTRANT
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0, /* nested_tracef */
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#endif
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#endif /* TRACE */
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#ifdef USE_PTHREADS
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PTHREAD_MUTEX_INITIALIZER, /* mutex_curses */
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PTHREAD_MUTEX_INITIALIZER, /* mutex_tst_tracef */
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PTHREAD_MUTEX_INITIALIZER, /* mutex_tracef */
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0, /* nested_tracef */
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0, /* use_pthreads */
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#endif
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};
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#define STACK_FRAME_0 { { 0 }, 0 }
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#define STACK_FRAME_0s { STACK_FRAME_0 }
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#define NUM_VARS_0s { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
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#define RIPOFF_0 { 0,0,0 }
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#define RIPOFF_0s { RIPOFF_0 }
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NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
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TRUE, /* use_env */
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FALSE, /* filter_mode */
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A_NORMAL, /* previous_attr */
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#ifndef USE_SP_RIPOFF
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RIPOFF_0s, /* ripoff */
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NULL, /* rsp */
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#endif
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{ /* tparm_state */
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#ifdef TRACE
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NULL, /* tname */
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#endif
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NULL, /* tparam_base */
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STACK_FRAME_0s, /* stack */
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0, /* stack_ptr */
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NULL, /* out_buff */
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0, /* out_size */
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0, /* out_used */
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NULL, /* fmt_buff */
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0, /* fmt_size */
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NUM_VARS_0s, /* dynamic_var */
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NUM_VARS_0s, /* static_vars */
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},
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NULL, /* saved_tty */
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#if NCURSES_NO_PADDING
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FALSE, /* flag to set if padding disabled */
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#endif
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0, /* _outch */
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#if BROKEN_LINKER || USE_REENTRANT
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NULL, /* real_acs_map */
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0, /* LINES */
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0, /* COLS */
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8, /* TABSIZE */
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1000, /* ESCDELAY */
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0, /* cur_term */
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#ifdef TRACE
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0L, /* _outchars */
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NULL, /* _tputs_trace */
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#endif
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#endif
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};
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/* *INDENT-ON* */
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/*
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* wgetch() and other functions with a WINDOW* parameter may use a SCREEN*
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* internally, and it is useful to allow those to be invoked without switching
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* SCREEN's, e.g., for multi-threaded applications.
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*/
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NCURSES_EXPORT(SCREEN *)
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_nc_screen_of(WINDOW *win)
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{
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SCREEN *sp = 0;
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if (win != 0) {
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WINDOWLIST *wp = (WINDOWLIST *) win;
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sp = wp->screen;
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}
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return (sp);
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}
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/******************************************************************************/
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#ifdef USE_PTHREADS
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static void
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init_global_mutexes(void)
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{
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static bool initialized = FALSE;
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if (!initialized) {
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initialized = TRUE;
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_nc_mutex_init(&_nc_globals.mutex_curses);
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_nc_mutex_init(&_nc_globals.mutex_tst_tracef);
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_nc_mutex_init(&_nc_globals.mutex_tracef);
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}
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}
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NCURSES_EXPORT(void)
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_nc_init_pthreads(void)
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{
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if (_nc_use_pthreads)
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return;
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# if USE_WEAK_SYMBOLS
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if ((pthread_mutex_init) == 0)
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return;
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if ((pthread_mutex_lock) == 0)
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return;
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if ((pthread_mutex_unlock) == 0)
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return;
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if ((pthread_mutex_trylock) == 0)
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return;
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if ((pthread_mutexattr_settype) == 0)
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return;
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# endif
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_nc_use_pthreads = 1;
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init_global_mutexes();
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}
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/*
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* Use recursive mutexes if we have them - they're part of Unix98.
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* For the cases where we do not, _nc_mutex_trylock() is used to avoid a
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* deadlock, at the expense of memory leaks and unexpected failures that
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* may not be handled by typical clients.
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*
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* FIXME - need configure check for PTHREAD_MUTEX_RECURSIVE, define it to
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* PTHREAD_MUTEX_NORMAL if not supported.
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*/
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NCURSES_EXPORT(void)
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_nc_mutex_init(pthread_mutex_t * obj)
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{
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pthread_mutexattr_t recattr;
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if (_nc_use_pthreads) {
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pthread_mutexattr_init(&recattr);
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pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_RECURSIVE);
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pthread_mutex_init(obj, &recattr);
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}
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}
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NCURSES_EXPORT(int)
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_nc_mutex_lock(pthread_mutex_t * obj)
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{
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if (_nc_use_pthreads == 0)
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return 0;
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return pthread_mutex_lock(obj);
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}
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NCURSES_EXPORT(int)
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_nc_mutex_trylock(pthread_mutex_t * obj)
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{
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if (_nc_use_pthreads == 0)
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return 0;
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return pthread_mutex_trylock(obj);
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}
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NCURSES_EXPORT(int)
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_nc_mutex_unlock(pthread_mutex_t * obj)
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{
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if (_nc_use_pthreads == 0)
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return 0;
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return pthread_mutex_unlock(obj);
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}
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#if USE_WEAK_SYMBOLS
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/*
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* NB: sigprocmask(2) is global but pthread_sigmask(3p)
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* only for the calling thread.
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*/
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NCURSES_EXPORT(int)
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_nc_sigprocmask(int how, const sigset_t * newmask, sigset_t * oldmask)
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{
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if ((pthread_sigmask))
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return pthread_sigmask(how, newmask, oldmask);
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else
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return sigprocmask(how, newmask, oldmask);
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}
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#endif
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#endif /* USE_PTHREADS */
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