X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Flib_data.c;h=195ddf978ab6383e7df16649d2c6216f4d6dadb4;hp=e3affe40ee86c7709998a910e3655182efab170c;hb=d4d1d81ab6fc1ad681ff120d925099f947fefcf3;hpb=d44d7f381ba0173521cb788ba3adb12e261e5c96 diff --git a/ncurses/tinfo/lib_data.c b/ncurses/tinfo/lib_data.c index e3affe40..195ddf97 100644 --- a/ncurses/tinfo/lib_data.c +++ b/ncurses/tinfo/lib_data.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * + * Copyright (c) 1998-2009,2010 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 * @@ -30,6 +30,7 @@ * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * * and: Thomas E. Dickey 1996-on * + * and: Juergen Pfeifer * ****************************************************************************/ /* @@ -41,7 +42,7 @@ #include -MODULE_ID("$Id: lib_data.c,v 1.40 2008/02/23 21:23:44 tom Exp $") +MODULE_ID("$Id: lib_data.c,v 1.61 2010/05/15 22:06:56 tom Exp $") /* * OS/2's native linker complains if we don't initialize public data when @@ -51,17 +52,17 @@ MODULE_ID("$Id: lib_data.c,v 1.40 2008/02/23 21:23:44 tom Exp $") 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; @@ -93,7 +94,7 @@ _nc_screen(void) NCURSES_EXPORT(int) _nc_alloc_screen(void) { - return ((my_screen = typeCalloc(SCREEN, 1)) != 0); + return ((my_screen = _nc_alloc_screen_sp()) != 0); } NCURSES_EXPORT(void) @@ -103,6 +104,7 @@ _nc_set_screen(SCREEN *sp) } #else + NCURSES_EXPORT_VAR(SCREEN *) SP = NULL; /* Some linkers require initialized data... */ #endif /* *INDENT-OFF* */ @@ -140,6 +142,10 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = { 0, /* tgetent_index */ 0, /* tgetent_sequence */ +#ifndef USE_SP_WINDOWLIST + 0, /* _nc_windowlist */ +#endif + #if USE_HOME_TERMINFO NULL, /* home_terminfo */ #endif @@ -149,6 +155,10 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = { 0, /* safeprint_rows */ #endif +#ifdef USE_TERM_DRIVER + 0, /* term_driver */ +#endif + #ifdef TRACE FALSE, /* init_trace */ CHARS_0s, /* trace_fname */ @@ -166,24 +176,25 @@ NCURSES_EXPORT_VAR(NCURSES_GLOBALS) _nc_globals = { 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 */ - +#if !defined(USE_PTHREADS) && USE_REENTRANT + 0, /* nested_tracef */ +#endif #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_curses */ PTHREAD_MUTEX_INITIALIZER, /* mutex_tst_tracef */ PTHREAD_MUTEX_INITIALIZER, /* mutex_tracef */ 0, /* nested_tracef */ + 0, /* use_pthreads */ +#endif +#if USE_PTHREADS_EINTR + 0, /* read_thread */ #endif }; @@ -198,8 +209,10 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = { TRUE, /* use_env */ FALSE, /* filter_mode */ A_NORMAL, /* previous_attr */ +#ifndef USE_SP_RIPOFF RIPOFF_0s, /* ripoff */ NULL, /* rsp */ +#endif { /* tparm_state */ #ifdef TRACE NULL, /* tname */ @@ -220,10 +233,17 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = { NUM_VARS_0s, /* static_vars */ }, NULL, /* saved_tty */ +#if NCURSES_NO_PADDING + FALSE, /* flag to set if padding disabled */ +#endif + 0, /* _outch */ #if BROKEN_LINKER || USE_REENTRANT NULL, /* real_acs_map */ 0, /* LINES */ 0, /* COLS */ + 8, /* TABSIZE */ + 1000, /* ESCDELAY */ + 0, /* cur_term */ #ifdef TRACE 0L, /* _outchars */ NULL, /* _tputs_trace */ @@ -232,33 +252,117 @@ NCURSES_EXPORT_VAR(NCURSES_PRESCREEN) _nc_prescreen = { }; /* *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_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; - memset(&recattr, 0, sizeof(recattr)); - pthread_mutexattr_settype(&recattr, PTHREAD_MUTEX_NORMAL); - pthread_mutex_init(obj, &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 */