/****************************************************************************
- * Copyright (c) 1998-2005,2007 Free Software Foundation, Inc. *
+ * Copyright 2018-2020,2021 Thomas E. Dickey *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996-on *
+ * and: Juergen Pfeifer *
****************************************************************************/
/*
#include <curses.priv.h>
-MODULE_ID("$Id: lib_data.c,v 1.33 2007/10/20 19:07:29 tom Exp $")
+MODULE_ID("$Id: lib_data.c,v 1.85 2021/09/04 10:54:35 tom Exp $")
/*
* OS/2's native linker complains if we don't initialize public data when
NCURSES_EXPORT(WINDOW *)
NCURSES_PUBLIC_VAR(stdscr) (void)
{
- return SP ? SP->_stdscr : 0;
+ return CURRENT_SCREEN ? StdScreen(CURRENT_SCREEN) : 0;
}
NCURSES_EXPORT(WINDOW *)
NCURSES_PUBLIC_VAR(curscr) (void)
{
- return SP ? SP->_curscr : 0;
+ return CURRENT_SCREEN ? CurScreen(CURRENT_SCREEN) : 0;
}
NCURSES_EXPORT(WINDOW *)
NCURSES_PUBLIC_VAR(newscr) (void)
{
- return SP ? SP->_newscr : 0;
+ return CURRENT_SCREEN ? NewScreen(CURRENT_SCREEN) : 0;
}
#else
NCURSES_EXPORT_VAR(WINDOW *) stdscr = 0;
NCURSES_EXPORT(int)
_nc_alloc_screen(void)
{
- return ((my_screen = typeCalloc(SCREEN, 1)) != 0);
+ my_screen = _nc_alloc_screen_sp();
+ T(("_nc_alloc_screen_sp %p", my_screen));
+ return (my_screen != 0);
}
NCURSES_EXPORT(void)
}
#else
+
NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data... */
#endif
/* *INDENT-OFF* */
#define CHARS_0s { '\0' }
#define TGETENT_0 { 0L, FALSE, NULL, NULL, NULL }
-#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 }
+#define TGETENT_0s { TGETENT_0, TGETENT_0, TGETENT_0, TGETENT_0 }
NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
+ 0, /* have_sigtstp */
0, /* have_sigwinch */
0, /* cleanup_nested */
FALSE, /* have_tic_directory */
FALSE, /* keep_tic_directory */
- TERMINFO, /* tic_directory */
+ 0, /* tic_directory */
NULL, /* dbi_list */
0, /* dbi_size */
NULL, /* first_name */
NULL, /* keyname_table */
+ 0, /* init_keyname */
+
+ 0, /* slk_format */
+
+ 2048, /* getstr_limit */
NULL, /* safeprint_buf */
0, /* safeprint_used */
0, /* tgetent_index */
0, /* tgetent_sequence */
+ 0, /* dbd_blob */
+ 0, /* dbd_list */
+ 0, /* dbd_size */
+ 0, /* dbd_time */
+ { { 0, 0 } }, /* dbd_vars */
+
+#if HAVE_TSEARCH
+ NULL, /* cached_tparm */
+ 0, /* count_tparm */
+#endif /* HAVE_TSEARCH */
+
+#ifdef USE_TERM_DRIVER
+ 0, /* term_driver */
+#endif
+
+#ifndef USE_SP_WINDOWLIST
+ 0, /* _nc_windowlist */
+#endif
+
#if USE_HOME_TERMINFO
NULL, /* home_terminfo */
#endif
0, /* safeprint_rows */
#endif
+#ifdef USE_PTHREADS
+ PTHREAD_MUTEX_INITIALIZER, /* mutex_curses */
+ PTHREAD_MUTEX_INITIALIZER, /* mutex_prescreen */
+ PTHREAD_MUTEX_INITIALIZER, /* mutex_screen */
+ PTHREAD_MUTEX_INITIALIZER, /* mutex_update */
+ PTHREAD_MUTEX_INITIALIZER, /* mutex_tst_tracef */
+ PTHREAD_MUTEX_INITIALIZER, /* mutex_tracef */
+ 0, /* nested_tracef */
+ 0, /* use_pthreads */
+#if USE_PTHREADS_EINTR
+ 0, /* read_thread */
+#endif
+#endif
+#if USE_WIDEC_SUPPORT
+ CHARS_0s, /* key_name */
+#endif
#ifdef TRACE
- FALSE, /* init_trace */
+ FALSE, /* trace_opened */
CHARS_0s, /* trace_fname */
0, /* trace_level */
NULL, /* trace_fp */
+ -1, /* trace_fd */
NULL, /* tracearg_buf */
0, /* tracearg_used */
NULL, /* tracedmp_buf */
0, /* tracedmp_used */
- CHARS_0s, /* tracemse_buf */
-
NULL, /* tracetry_buf */
0, /* tracetry_used */
-#ifndef USE_TERMLIB
{ CHARS_0s, CHARS_0s }, /* traceatr_color_buf */
0, /* traceatr_color_sel */
-1, /* traceatr_color_last */
-#endif /* USE_TERMLIB */
-
-#endif /* TRACE */
-#ifdef USE_PTHREADS
- PTHREAD_MUTEX_INITIALIZER, /* mutex_set_SP */
- PTHREAD_MUTEX_INITIALIZER, /* mutex_use_screen */
- PTHREAD_MUTEX_INITIALIZER, /* mutex_use_window */
- PTHREAD_MUTEX_INITIALIZER, /* mutex_windowlist */
- PTHREAD_MUTEX_INITIALIZER, /* mutex_tst_tracef */
- PTHREAD_MUTEX_INITIALIZER, /* mutex_tracef */
+#if !defined(USE_PTHREADS) && USE_REENTRANT
0, /* nested_tracef */
#endif
+#endif /* TRACE */
+#if NO_LEAKS
+ FALSE, /* leak_checking */
+#endif
};
#define STACK_FRAME_0 { { 0 }, 0 }
#define STACK_FRAME_0s { STACK_FRAME_0 }
#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 }
-#define RIPOFF_0 { 0,0 }
+#define RIPOFF_0 { 0,0,0 }
#define RIPOFF_0s { RIPOFF_0 }
NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
+ NULL, /* allocated */
TRUE, /* use_env */
FALSE, /* filter_mode */
A_NORMAL, /* previous_attr */
- RIPOFF_0s, /* ripoff */
- NULL, /* rsp */
{ /* tparm_state */
-#ifdef TRACE
- NULL, /* tname */
-#endif
NULL, /* tparam_base */
STACK_FRAME_0s, /* stack */
NULL, /* fmt_buff */
0, /* fmt_size */
- NUM_VARS_0s, /* dynamic_var */
NUM_VARS_0s, /* static_vars */
+#ifdef TRACE
+ NULL, /* tname */
+#endif
},
NULL, /* saved_tty */
+ FALSE, /* use_tioctl */
+ 0, /* _outch */
+#ifndef USE_SP_RIPOFF
+ RIPOFF_0s, /* ripoff */
+ NULL, /* rsp */
+#endif
+#if NCURSES_NO_PADDING
+ FALSE, /* flag to set if padding disabled */
+#endif
#if BROKEN_LINKER || USE_REENTRANT
NULL, /* real_acs_map */
0, /* LINES */
0, /* COLS */
+ 8, /* TABSIZE */
+ 1000, /* ESCDELAY */
+ 0, /* cur_term */
+#endif
#ifdef TRACE
+#if BROKEN_LINKER || USE_REENTRANT
0L, /* _outchars */
NULL, /* _tputs_trace */
#endif
#endif
};
/* *INDENT-ON* */
+
+/*
+ * wgetch() and other functions with a WINDOW* parameter may use a SCREEN*
+ * internally, and it is useful to allow those to be invoked without switching
+ * SCREEN's, e.g., for multi-threaded applications.
+ */
+NCURSES_EXPORT(SCREEN *)
+_nc_screen_of(WINDOW *win)
+{
+ SCREEN *sp = 0;
+
+ if (win != 0) {
+ sp = WINDOW_EXT(win, screen);
+ }
+ return (sp);
+}
+
+/******************************************************************************/
+#ifdef USE_PTHREADS
+static void
+init_global_mutexes(void)
+{
+ static bool initialized = FALSE;
+
+ if (!initialized) {
+ initialized = TRUE;
+ _nc_mutex_init(&_nc_globals.mutex_curses);
+ _nc_mutex_init(&_nc_globals.mutex_prescreen);
+ _nc_mutex_init(&_nc_globals.mutex_screen);
+ _nc_mutex_init(&_nc_globals.mutex_update);
+ _nc_mutex_init(&_nc_globals.mutex_tst_tracef);
+ _nc_mutex_init(&_nc_globals.mutex_tracef);
+ }
+}
+
+NCURSES_EXPORT(void)
+_nc_init_pthreads(void)
+{
+ if (_nc_use_pthreads)
+ return;
+# if USE_WEAK_SYMBOLS
+ if ((pthread_mutex_init) == 0)
+ return;
+ if ((pthread_mutex_lock) == 0)
+ return;
+ if ((pthread_mutex_unlock) == 0)
+ return;
+ if ((pthread_mutex_trylock) == 0)
+ return;
+ if ((pthread_mutexattr_settype) == 0)
+ return;
+# endif
+ _nc_use_pthreads = 1;
+ init_global_mutexes();
+}
+
+/*
+ * Use recursive mutexes if we have them - they're part of Unix98.
+ * For the cases where we do not, _nc_mutex_trylock() is used to avoid a
+ * deadlock, at the expense of memory leaks and unexpected failures that
+ * may not be handled by typical clients.
+ *
+ * FIXME - need configure check for PTHREAD_MUTEX_RECURSIVE, define it to
+ * PTHREAD_MUTEX_NORMAL if not supported.
+ */
+NCURSES_EXPORT(void)
+_nc_mutex_init(pthread_mutex_t * obj)
+{
+ pthread_mutexattr_t recattr;
+
+ if (_nc_use_pthreads) {
+ pthread_mutexattr_init(&recattr);
+ pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_RECURSIVE);
+ pthread_mutex_init(obj, &recattr);
+ }
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_lock(pthread_mutex_t * obj)
+{
+ if (_nc_use_pthreads == 0)
+ return 0;
+ return pthread_mutex_lock(obj);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_trylock(pthread_mutex_t * obj)
+{
+ if (_nc_use_pthreads == 0)
+ return 0;
+ return pthread_mutex_trylock(obj);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_unlock(pthread_mutex_t * obj)
+{
+ if (_nc_use_pthreads == 0)
+ return 0;
+ return pthread_mutex_unlock(obj);
+}
+#endif /* USE_PTHREADS */
+
+#if defined(USE_PTHREADS) || USE_PTHREADS_EINTR
+#if USE_WEAK_SYMBOLS
+/*
+ * NB: sigprocmask(2) is global but pthread_sigmask(3p)
+ * only for the calling thread.
+ */
+NCURSES_EXPORT(int)
+_nc_sigprocmask(int how, const sigset_t * newmask, sigset_t * oldmask)
+{
+ if ((pthread_sigmask))
+ return pthread_sigmask(how, newmask, oldmask);
+ else
+ return (sigprocmask) (how, newmask, oldmask);
+}
+#endif
+#endif /* USE_PTHREADS */
projects / ncurses.git / blobdiff