aboutsummaryrefslogtreecommitdiff
path: root/ncurses/tinfo/lib_data.c
diff options
context:
space:
mode:
Diffstat (limited to 'ncurses/tinfo/lib_data.c')
-rw-r--r--ncurses/tinfo/lib_data.c294
1 files changed, 294 insertions, 0 deletions
diff --git a/ncurses/tinfo/lib_data.c b/ncurses/tinfo/lib_data.c
new file mode 100644
index 000000000000..ba37e5dc8c49
--- /dev/null
+++ b/ncurses/tinfo/lib_data.c
@@ -0,0 +1,294 @@
+/****************************************************************************
+ * Copyright (c) 1998-2007,2008 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 *
+ * "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. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
+ ****************************************************************************/
+
+/*
+** lib_data.c
+**
+** Common data that may/may not be allocated, but is referenced globally
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_data.c,v 1.43 2008/03/29 21:16:49 tom Exp $")
+
+/*
+ * OS/2's native linker complains if we don't initialize public data when
+ * constructing a dll (reported by J.J.G.Ripoll).
+ */
+#if USE_REENTRANT
+NCURSES_EXPORT(WINDOW *)
+NCURSES_PUBLIC_VAR(stdscr) (void)
+{
+ return SP ? SP->_stdscr : 0;
+}
+NCURSES_EXPORT(WINDOW *)
+NCURSES_PUBLIC_VAR(curscr) (void)
+{
+ return SP ? SP->_curscr : 0;
+}
+NCURSES_EXPORT(WINDOW *)
+NCURSES_PUBLIC_VAR(newscr) (void)
+{
+ return SP ? SP->_newscr : 0;
+}
+#else
+NCURSES_EXPORT_VAR(WINDOW *) stdscr = 0;
+NCURSES_EXPORT_VAR(WINDOW *) curscr = 0;
+NCURSES_EXPORT_VAR(WINDOW *) newscr = 0;
+#endif
+
+NCURSES_EXPORT_VAR(SCREEN *) _nc_screen_chain = 0;
+
+/*
+ * The variable 'SP' will be defined as a function on systems that cannot link
+ * data-only modules, since it is used in a lot of places within ncurses and we
+ * cannot guarantee that any application will use any particular function. We
+ * put the WINDOW variables in this module, because it appears that any
+ * application that uses them will also use 'SP'.
+ *
+ * This module intentionally does not reference other ncurses modules, to avoid
+ * module coupling that increases the size of the executable.
+ */
+#if BROKEN_LINKER
+static SCREEN *my_screen;
+
+NCURSES_EXPORT(SCREEN *)
+_nc_screen(void)
+{
+ return my_screen;
+}
+
+NCURSES_EXPORT(int)
+_nc_alloc_screen(void)
+{
+ return ((my_screen = typeCalloc(SCREEN, 1)) != 0);
+}
+
+NCURSES_EXPORT(void)
+_nc_set_screen(SCREEN *sp)
+{
+ my_screen = sp;
+}
+
+#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 }
+
+NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = {
+ 0, /* have_sigwinch */
+ 0, /* cleanup_nested */
+
+ FALSE, /* init_signals */
+ FALSE, /* init_screen */
+
+ NULL, /* comp_sourcename */
+ NULL, /* comp_termtype */
+
+ FALSE, /* have_tic_directory */
+ FALSE, /* keep_tic_directory */
+ TERMINFO, /* tic_directory */
+
+ NULL, /* dbi_list */
+ 0, /* dbi_size */
+
+ NULL, /* first_name */
+ NULL, /* keyname_table */
+
+ 0, /* slk_format */
+
+ NULL, /* safeprint_buf */
+ 0, /* safeprint_used */
+
+ TGETENT_0s, /* tgetent_cache */
+ 0, /* tgetent_index */
+ 0, /* tgetent_sequence */
+
+ 0, /* _nc_windowlist */
+
+#if USE_HOME_TERMINFO
+ NULL, /* home_terminfo */
+#endif
+
+#if !USE_SAFE_SPRINTF
+ 0, /* safeprint_cols */
+ 0, /* safeprint_rows */
+#endif
+
+#ifdef TRACE
+ FALSE, /* init_trace */
+ CHARS_0s, /* trace_fname */
+ 0, /* trace_level */
+ NULL, /* trace_fp */
+
+ NULL, /* tracearg_buf */
+ 0, /* tracearg_used */
+
+ NULL, /* tracebuf_ptr */
+ 0, /* tracebuf_used */
+
+ CHARS_0s, /* tracechr_buf */
+
+ NULL, /* tracedmp_buf */
+ 0, /* tracedmp_used */
+
+ CHARS_0s, /* tracemse_buf */
+
+ NULL, /* tracetry_buf */
+ 0, /* tracetry_used */
+
+ { CHARS_0s, CHARS_0s }, /* traceatr_color_buf */
+ 0, /* traceatr_color_sel */
+ -1, /* traceatr_color_last */
+
+#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 */
+ 0, /* nested_tracef */
+#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 { 0,0,0 }
+#define RIPOFF_0s { RIPOFF_0 }
+
+NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = {
+ 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 */
+ 0, /* stack_ptr */
+
+ NULL, /* out_buff */
+ 0, /* out_size */
+ 0, /* out_used */
+
+ NULL, /* fmt_buff */
+ 0, /* fmt_size */
+
+ NUM_VARS_0s, /* dynamic_var */
+ NUM_VARS_0s, /* static_vars */
+ },
+ NULL, /* saved_tty */
+#if BROKEN_LINKER || USE_REENTRANT
+ NULL, /* real_acs_map */
+ 0, /* LINES */
+ 0, /* COLS */
+#ifdef TRACE
+ 0L, /* _outchars */
+ NULL, /* _tputs_trace */
+#endif
+#endif
+};
+/* *INDENT-ON* */
+
+/******************************************************************************/
+#ifdef USE_PTHREADS
+static void
+init_global_mutexes(void)
+{
+ static bool initialized = FALSE;
+
+ if (!initialized) {
+ initialized = TRUE;
+ _nc_mutex_init(&_nc_globals.mutex_set_SP);
+ _nc_mutex_init(&_nc_globals.mutex_use_screen);
+ _nc_mutex_init(&_nc_globals.mutex_use_window);
+ _nc_mutex_init(&_nc_globals.mutex_windowlist);
+ _nc_mutex_init(&_nc_globals.mutex_tst_tracef);
+ _nc_mutex_init(&_nc_globals.mutex_tracef);
+ }
+}
+
+/*
+ * 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;
+
+ memset(&recattr, 0, sizeof(recattr));
+ pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_RECURSIVE);
+ pthread_mutex_init(obj, &recattr);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_lock(pthread_mutex_t * obj)
+{
+ init_global_mutexes();
+ return pthread_mutex_lock(obj);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_trylock(pthread_mutex_t * obj)
+{
+ init_global_mutexes();
+ return pthread_mutex_trylock(obj);
+}
+
+NCURSES_EXPORT(int)
+_nc_mutex_unlock(pthread_mutex_t * obj)
+{
+ init_global_mutexes();
+ return pthread_mutex_unlock(obj);
+}
+#endif /* USE_PTHREADS */