X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftty%2Flib_tstp.c;h=4a0ef50336362e3bb99b665e08ead49e7d47fa12;hp=c850e41da2c2da122f5a71c40a5753b7048f145b;hb=404cc3f5b0751dd219565139f825c5a4d445f651;hpb=46722468f47c2b77b3987729b4bcf2321cccfd01 diff --git a/ncurses/tty/lib_tstp.c b/ncurses/tty/lib_tstp.c index c850e41d..4a0ef503 100644 --- a/ncurses/tty/lib_tstp.c +++ b/ncurses/tty/lib_tstp.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. * + * Copyright (c) 1998-2008,2009 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 * @@ -29,7 +29,7 @@ /**************************************************************************** * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * - * and: Thomas Dickey 1995-2001 * + * and: Thomas E. Dickey 1995-on * ****************************************************************************/ /* @@ -46,7 +46,7 @@ #define _POSIX_SOURCE #endif -MODULE_ID("$Id: lib_tstp.c,v 1.30 2002/05/18 19:55:38 tom Exp $") +MODULE_ID("$Id: lib_tstp.c,v 1.39 2009/05/09 15:46:20 tom Exp $") #if defined(SIGTSTP) && (HAVE_SIGACTION || HAVE_SIGVEC) #define USE_SIGTSTP 1 @@ -59,16 +59,20 @@ static const char * signal_name(int sig) { switch (sig) { +#ifdef SIGALRM case SIGALRM: return "SIGALRM"; +#endif #ifdef SIGCONT case SIGCONT: return "SIGCONT"; #endif case SIGINT: return "SIGINT"; +#ifdef SIGQUIT case SIGQUIT: return "SIGQUIT"; +#endif case SIGTERM: return "SIGTERM"; #ifdef SIGTSTP @@ -136,6 +140,7 @@ signal_name(int sig) static void tstp(int dummy GCC_UNUSED) { + SCREEN *sp = CURRENT_SCREEN; sigset_t mask, omask; sigaction_t act, oact; @@ -154,11 +159,11 @@ tstp(int dummy GCC_UNUSED) * parent was stopped before us, and we would likely pick up the * settings already modified by the shell. */ - if (SP != 0 && !SP->_endwin) /* don't do this if we're not in curses */ + if (sp != 0 && !sp->_endwin) /* don't do this if we're not in curses */ #if HAVE_TCGETPGRP if (tcgetpgrp(STDIN_FILENO) == getpgrp()) #endif - def_prog_mode(); + NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG); /* * Block window change and timer signals. The latter @@ -166,7 +171,9 @@ tstp(int dummy GCC_UNUSED) * to repaint the screen. */ (void) sigemptyset(&mask); +#ifdef SIGALRM (void) sigaddset(&mask, SIGALRM); +#endif #if USE_SIGWINCH (void) sigaddset(&mask, SIGWINCH); #endif @@ -185,7 +192,7 @@ tstp(int dummy GCC_UNUSED) * End window mode, which also resets the terminal state to the * original (pre-curses) modes. */ - endwin(); + NCURSES_SP_NAME(endwin) (NCURSES_SP_ARG); /* Unblock SIGTSTP. */ (void) sigemptyset(&mask); @@ -212,19 +219,19 @@ tstp(int dummy GCC_UNUSED) T(("SIGCONT received")); sigaction(SIGTSTP, &oact, NULL); - flushinp(); + NCURSES_SP_NAME(flushinp) (NCURSES_SP_ARG); /* * If the user modified the tty state while suspended, he wants * those changes to stick. So save the new "default" terminal state. */ - def_shell_mode(); + NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG); /* * This relies on the fact that doupdate() will restore the * program-mode tty state, and issue enter_ca_mode if need be. */ - doupdate(); + NCURSES_SP_NAME(doupdate) (NCURSES_SP_ARG); /* Reset the signals. */ (void) sigprocmask(SIG_SETMASK, &omask, NULL); @@ -234,16 +241,19 @@ tstp(int dummy GCC_UNUSED) static void cleanup(int sig) { - static int nested; + SCREEN *sp = CURRENT_SCREEN; /* * Actually, doing any sort of I/O from within an signal handler is * "unsafe". But we'll _try_ to clean up the screen and terminal * settings on the way out. */ - if (!nested++ + if (!_nc_globals.cleanup_nested++ && (sig == SIGINT - || sig == SIGQUIT)) { +#ifdef SIGQUIT + || sig == SIGQUIT +#endif + )) { #if HAVE_SIGACTION || HAVE_SIGVEC sigaction_t act; sigemptyset(&act.sa_mask); @@ -254,19 +264,17 @@ cleanup(int sig) if (signal(sig, SIG_IGN) != SIG_ERR) #endif { - SCREEN *scan = _nc_screen_chain; - while (scan) { - if (SP != 0 - && SP->_ofp != 0 - && isatty(fileno(SP->_ofp))) { - SP->_cleanup = TRUE; - SP->_outch = _nc_outch; + SCREEN *scan; + for (each_screen(scan)) { + if (scan->_ofp != 0 + && isatty(fileno(scan->_ofp))) { + scan->_cleanup = TRUE; + scan->_outch = NCURSES_SP_NAME(_nc_outch); } set_term(scan); - endwin(); - if (SP) - SP->_endwin = FALSE; /* in case we have an atexit! */ - scan = scan->_next_screen; + NCURSES_SP_NAME(endwin) (NCURSES_SP_ARG); + if (sp) + sp->_endwin = FALSE; /* in case we have an atexit! */ } } } @@ -277,11 +285,7 @@ cleanup(int sig) static void sigwinch(int sig GCC_UNUSED) { - SCREEN *scan = _nc_screen_chain; - while (scan) { - scan->_sig_winch = TRUE; - scan = scan->_next_screen; - } + _nc_globals.have_sigwinch = 1; } #endif /* USE_SIGWINCH */ @@ -355,29 +359,27 @@ CatchIfDefault(int sig, RETSIGTYPE (*handler) (int)) NCURSES_EXPORT(void) _nc_signal_handler(bool enable) { - static bool initialized = FALSE; - T((T_CALLED("_nc_signal_handler(%d)"), enable)); #if USE_SIGTSTP /* Xenix 2.x doesn't have SIGTSTP, for example */ { static bool ignore_tstp = FALSE; if (!ignore_tstp) { - static sigaction_t act, oact; + static sigaction_t new_sigaction, old_sigaction; if (!enable) { - act.sa_handler = SIG_IGN; - sigaction(SIGTSTP, &act, &oact); - } else if (act.sa_handler != SIG_DFL) { - sigaction(SIGTSTP, &oact, NULL); - } else if (sigaction(SIGTSTP, NULL, &oact) == 0 - && (oact.sa_handler == SIG_DFL)) { - sigemptyset(&act.sa_mask); + new_sigaction.sa_handler = SIG_IGN; + sigaction(SIGTSTP, &new_sigaction, &old_sigaction); + } else if (new_sigaction.sa_handler != SIG_DFL) { + sigaction(SIGTSTP, &old_sigaction, NULL); + } else if (sigaction(SIGTSTP, NULL, &old_sigaction) == 0 + && (old_sigaction.sa_handler == SIG_DFL)) { + sigemptyset(&new_sigaction.sa_mask); #ifdef SA_RESTART - act.sa_flags |= SA_RESTART; + new_sigaction.sa_flags |= SA_RESTART; #endif /* SA_RESTART */ - act.sa_handler = tstp; - (void) sigaction(SIGTSTP, &act, NULL); + new_sigaction.sa_handler = tstp; + (void) sigaction(SIGTSTP, &new_sigaction, NULL); } else { ignore_tstp = TRUE; } @@ -385,14 +387,14 @@ _nc_signal_handler(bool enable) } #endif /* !USE_SIGTSTP */ - if (!initialized) { + if (!_nc_globals.init_signals) { if (enable) { CatchIfDefault(SIGINT, cleanup); CatchIfDefault(SIGTERM, cleanup); #if USE_SIGWINCH CatchIfDefault(SIGWINCH, sigwinch); #endif - initialized = TRUE; + _nc_globals.init_signals = TRUE; } } returnVoid;