Mercurial > octave-antonio
view libinterp/corefcn/sighandlers.cc @ 17281:bc924baa2c4e
doc: Add new @qcode macro for code samples which are quoted.
Macro handles options ("on") or properties ("position") more elegantly
than @code{"text"}.
* doc/interpreter/macros.texi: Add new @qcode macro.
* doc/interpreter/tips.txi: Add documentation about @qcode macro.
* doc/interpreter/basics.txi, doc/interpreter/container.txi,
doc/interpreter/emacs.txi, doc/interpreter/errors.txi,
doc/interpreter/eval.txi, doc/interpreter/expr.txi,
doc/interpreter/external.txi, doc/interpreter/func.txi,
doc/interpreter/grammar.txi, doc/interpreter/image.txi,
doc/interpreter/install.txi, doc/interpreter/interp.txi,
doc/interpreter/io.txi, doc/interpreter/matrix.txi,
doc/interpreter/numbers.txi, doc/interpreter/oop.txi,
doc/interpreter/package.txi, doc/interpreter/plot.txi,
doc/interpreter/quad.txi, doc/interpreter/sparse.txi,
doc/interpreter/strings.txi, doc/interpreter/system.txi,
doc/interpreter/vectorize.txi, libinterp/corefcn/balance.cc,
libinterp/corefcn/bitfcns.cc, libinterp/corefcn/cellfun.cc,
libinterp/corefcn/conv2.cc, libinterp/corefcn/data.cc,
libinterp/corefcn/debug.cc, libinterp/corefcn/defaults.cc,
libinterp/corefcn/dirfns.cc, libinterp/corefcn/dlmread.cc,
libinterp/corefcn/error.cc, libinterp/corefcn/file-io.cc,
libinterp/corefcn/find.cc, libinterp/corefcn/gammainc.cc,
libinterp/corefcn/graphics.cc, libinterp/corefcn/help.cc,
libinterp/corefcn/hex2num.cc, libinterp/corefcn/input.cc,
libinterp/corefcn/load-path.cc, libinterp/corefcn/load-save.cc,
libinterp/corefcn/ls-oct-ascii.cc, libinterp/corefcn/lu.cc,
libinterp/corefcn/luinc.cc, libinterp/corefcn/matrix_type.cc,
libinterp/corefcn/oct-hist.cc, libinterp/corefcn/pager.cc,
libinterp/corefcn/pr-output.cc, libinterp/corefcn/pt-jit.cc,
libinterp/corefcn/qz.cc, libinterp/corefcn/rand.cc,
libinterp/corefcn/regexp.cc, libinterp/corefcn/schur.cc,
libinterp/corefcn/sighandlers.cc, libinterp/corefcn/sparse.cc,
libinterp/corefcn/spparms.cc, libinterp/corefcn/str2double.cc,
libinterp/corefcn/svd.cc, libinterp/corefcn/symtab.cc,
libinterp/corefcn/syscalls.cc, libinterp/corefcn/toplev.cc,
libinterp/corefcn/tril.cc, libinterp/corefcn/typecast.cc,
libinterp/corefcn/utils.cc, libinterp/corefcn/variables.cc,
libinterp/dldfcn/__init_fltk__.cc, libinterp/dldfcn/chol.cc,
libinterp/dldfcn/colamd.cc, libinterp/dldfcn/fftw.cc, libinterp/dldfcn/qr.cc,
libinterp/dldfcn/symbfact.cc, libinterp/octave-value/ov-base.cc,
libinterp/octave-value/ov-fcn-handle.cc,
libinterp/octave-value/ov-fcn-inline.cc, libinterp/octave-value/ov-java.cc,
libinterp/octave-value/ov-range.cc, libinterp/octave-value/ov-struct.cc,
libinterp/octave-value/ov-usr-fcn.cc, libinterp/parse-tree/oct-parse.in.yy,
libinterp/parse-tree/pt-binop.cc, libinterp/parse-tree/pt-eval.cc,
libinterp/parse-tree/pt-mat.cc, scripts/@ftp/ftp.m,
scripts/deprecated/java_convert_matrix.m, scripts/deprecated/java_debug.m,
scripts/deprecated/java_unsigned_conversion.m, scripts/deprecated/shell_cmd.m,
scripts/general/dblquad.m, scripts/general/display.m,
scripts/general/genvarname.m, scripts/general/idivide.m,
scripts/general/interp1.m, scripts/general/interp2.m,
scripts/general/interp3.m, scripts/general/interpn.m, scripts/general/isa.m,
scripts/general/profexplore.m, scripts/general/profile.m,
scripts/general/quadgk.m, scripts/general/randi.m, scripts/general/structfun.m,
scripts/general/subsindex.m, scripts/general/triplequad.m,
scripts/geometry/griddata.m, scripts/geometry/griddata3.m,
scripts/geometry/griddatan.m, scripts/geometry/voronoi.m, scripts/help/help.m,
scripts/help/lookfor.m, scripts/image/cmpermute.m, scripts/image/colormap.m,
scripts/image/image.m, scripts/image/imagesc.m, scripts/image/imfinfo.m,
scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imshow.m,
scripts/image/imwrite.m, scripts/image/ind2gray.m, scripts/image/lines.m,
scripts/image/rgb2ind.m, scripts/image/spinmap.m, scripts/io/dlmwrite.m,
scripts/io/strread.m, scripts/io/textread.m, scripts/io/textscan.m,
scripts/java/javaclasspath.m, scripts/java/usejava.m,
scripts/miscellaneous/bzip2.m, scripts/miscellaneous/computer.m,
scripts/miscellaneous/copyfile.m, scripts/miscellaneous/debug.m,
scripts/miscellaneous/dos.m, scripts/miscellaneous/edit.m,
scripts/miscellaneous/gzip.m, scripts/miscellaneous/license.m,
scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/movefile.m,
scripts/miscellaneous/parseparams.m, scripts/miscellaneous/unix.m,
scripts/optimization/fminbnd.m, scripts/optimization/fminsearch.m,
scripts/optimization/fminunc.m, scripts/optimization/fsolve.m,
scripts/optimization/fzero.m, scripts/optimization/glpk.m,
scripts/optimization/lsqnonneg.m, scripts/optimization/optimset.m,
scripts/optimization/pqpnonneg.m, scripts/pkg/pkg.m, scripts/plot/allchild.m,
scripts/plot/ancestor.m, scripts/plot/area.m, scripts/plot/axis.m,
scripts/plot/bar.m, scripts/plot/barh.m, scripts/plot/box.m,
scripts/plot/caxis.m, scripts/plot/cla.m, scripts/plot/clabel.m,
scripts/plot/clf.m, scripts/plot/close.m, scripts/plot/colorbar.m,
scripts/plot/daspect.m, scripts/plot/ezmesh.m, scripts/plot/ezmeshc.m,
scripts/plot/ezsurf.m, scripts/plot/ezsurfc.m, scripts/plot/findall.m,
scripts/plot/findobj.m, scripts/plot/gcbo.m, scripts/plot/gcf.m,
scripts/plot/gco.m, scripts/plot/grid.m, scripts/plot/guihandles.m,
scripts/plot/hdl2struct.m, scripts/plot/hidden.m, scripts/plot/hold.m,
scripts/plot/isonormals.m, scripts/plot/isosurface.m, scripts/plot/legend.m,
scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m,
scripts/plot/newplot.m, scripts/plot/orient.m, scripts/plot/pareto.m,
scripts/plot/patch.m, scripts/plot/pbaspect.m, scripts/plot/pcolor.m,
scripts/plot/plot.m, scripts/plot/print.m,
scripts/plot/private/__add_default_menu__.m, scripts/plot/quiver.m,
scripts/plot/quiver3.m, scripts/plot/refreshdata.m, scripts/plot/saveas.m,
scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/shading.m,
scripts/plot/shrinkfaces.m, scripts/plot/slice.m, scripts/plot/stem.m,
scripts/plot/stem3.m, scripts/plot/struct2hdl.m, scripts/plot/subplot.m,
scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m,
scripts/plot/tetramesh.m, scripts/plot/uigetfile.m, scripts/plot/uimenu.m,
scripts/plot/uiputfile.m, scripts/plot/waterfall.m, scripts/plot/whitebg.m,
scripts/plot/xlim.m, scripts/plot/ylim.m, scripts/plot/zlim.m,
scripts/polynomial/conv.m, scripts/polynomial/polyout.m,
scripts/polynomial/splinefit.m, scripts/set/ismember.m, scripts/set/powerset.m,
scripts/set/setdiff.m, scripts/set/union.m, scripts/set/unique.m,
scripts/signal/detrend.m, scripts/signal/filter2.m, scripts/signal/freqz.m,
scripts/signal/periodogram.m, scripts/signal/spectral_adf.m,
scripts/signal/spectral_xdf.m, scripts/sparse/eigs.m, scripts/sparse/svds.m,
scripts/specfun/legendre.m, scripts/special-matrix/gallery.m,
scripts/statistics/base/mean.m, scripts/statistics/base/moment.m,
scripts/statistics/tests/cor_test.m,
scripts/statistics/tests/kolmogorov_smirnov_test.m,
scripts/statistics/tests/kolmogorov_smirnov_test_2.m,
scripts/statistics/tests/kruskal_wallis_test.m,
scripts/statistics/tests/prop_test_2.m, scripts/statistics/tests/sign_test.m,
scripts/statistics/tests/t_test.m, scripts/statistics/tests/t_test_2.m,
scripts/statistics/tests/t_test_regression.m,
scripts/statistics/tests/u_test.m, scripts/statistics/tests/var_test.m,
scripts/statistics/tests/welch_test.m,
scripts/statistics/tests/wilcoxon_test.m, scripts/statistics/tests/z_test.m,
scripts/statistics/tests/z_test_2.m, scripts/strings/base2dec.m,
scripts/strings/index.m, scripts/strings/isstrprop.m,
scripts/strings/mat2str.m, scripts/strings/regexptranslate.m,
scripts/strings/rindex.m, scripts/strings/str2num.m, scripts/strings/strcat.m,
scripts/strings/strjust.m, scripts/strings/strmatch.m,
scripts/strings/validatestring.m, scripts/testfun/demo.m,
scripts/testfun/example.m, scripts/testfun/test.m, scripts/time/addtodate.m,
scripts/time/asctime.m, scripts/time/datestr.m, scripts/time/datetick.m,
scripts/time/weekday.m, scripts/ui/errordlg.m, scripts/ui/helpdlg.m,
scripts/ui/inputdlg.m, scripts/ui/listdlg.m, scripts/ui/msgbox.m,
scripts/ui/questdlg.m, scripts/ui/warndlg.m: Use new @qcode macro.
author | Rik <rik@octave.org> |
---|---|
date | Mon, 19 Aug 2013 20:46:38 -0700 |
parents | 68fc671a9339 |
children | 9d0992c6df30 |
line wrap: on
line source
/* Copyright (C) 1993-2012 John W. Eaton This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <cstdlib> #include <iostream> #include <new> #include <sys/types.h> #include <unistd.h> #include "cmd-edit.h" #include "oct-syscalls.h" #include "quit.h" #include "singleton-cleanup.h" #include "debug.h" #include "defun.h" #include "error.h" #include "input.h" #include "load-save.h" #include "oct-map.h" #include "pager.h" #include "pt-bp.h" #include "pt-eval.h" #include "sighandlers.h" #include "sysdep.h" #include "syswait.h" #include "toplev.h" #include "utils.h" #include "variables.h" // Nonzero means we have already printed a message for this series of // SIGPIPES. We assume that the writer will eventually give up. int pipe_handler_error_count = 0; // TRUE means we can be interrupted. bool can_interrupt = false; // TRUE means we should try to enter the debugger on SIGINT. bool Vdebug_on_interrupt = false; // Allow users to avoid writing octave-workspace for SIGHUP (sent by // closing gnome-terminal, for example). Note that this variable has // no effect if Vcrash_dumps_octave_core is FALSE. static bool Vsighup_dumps_octave_core = true; // Similar to Vsighup_dumps_octave_core, but for SIGTERM signal. static bool Vsigterm_dumps_octave_core = true; // List of signals we have caught since last call to octave_signal_handler. static bool octave_signals_caught[NSIG]; // Signal handler return type. #ifndef BADSIG #define BADSIG (void (*)(int))-1 #endif // The following is a workaround for an apparent bug in GCC 4.1.2 and // possibly earlier versions. See Octave bug report #30685 for details. #if defined (__GNUC__) # if ! (__GNUC__ > 4 \ || (__GNUC__ == 4 && (__GNUC_MINOR__ > 1 \ || (__GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ > 2)))) # undef GNULIB_NAMESPACE # define GNULIB_NAMESPACE # warning "disabling GNULIB_NAMESPACE for signal functions -- consider upgrading to a current version of GCC" # endif #endif #define BLOCK_SIGNAL(sig, nvar, ovar) \ do \ { \ GNULIB_NAMESPACE::sigemptyset (&nvar); \ GNULIB_NAMESPACE::sigaddset (&nvar, sig); \ GNULIB_NAMESPACE::sigemptyset (&ovar); \ GNULIB_NAMESPACE::sigprocmask (SIG_BLOCK, &nvar, &ovar); \ } \ while (0) #if !defined (SIGCHLD) && defined (SIGCLD) #define SIGCHLD SIGCLD #endif #define BLOCK_CHILD(nvar, ovar) BLOCK_SIGNAL (SIGCHLD, nvar, ovar) #define UNBLOCK_CHILD(ovar) GNULIB_NAMESPACE::sigprocmask (SIG_SETMASK, &ovar, 0) // Called from octave_quit () to actually do something about the signals // we have caught. void octave_signal_handler (void) { // The list of signals is relatively short, so we will just go // linearly through the list. for (int i = 0; i < NSIG; i++) { if (octave_signals_caught[i]) { octave_signals_caught[i] = false; switch (i) { #ifdef SIGCHLD case SIGCHLD: { volatile octave_interrupt_handler saved_interrupt_handler = octave_ignore_interrupts (); sigset_t set, oset; BLOCK_CHILD (set, oset); octave_child_list::wait (); octave_set_interrupt_handler (saved_interrupt_handler); UNBLOCK_CHILD (oset); octave_child_list::reap (); } break; #endif case SIGFPE: std::cerr << "warning: floating point exception" << std::endl; break; #ifdef SIGPIPE case SIGPIPE: std::cerr << "warning: broken pipe" << std::endl; break; #endif } } } } static void my_friendly_exit (const char *sig_name, int sig_number, bool save_vars = true) { static bool been_there_done_that = false; if (been_there_done_that) { #if defined (SIGABRT) octave_set_signal_handler (SIGABRT, SIG_DFL); #endif std::cerr << "panic: attempted clean up apparently failed -- aborting...\n"; MINGW_SIGNAL_CLEANUP (); abort (); } else { been_there_done_that = true; std::cerr << "panic: " << sig_name << " -- stopping myself...\n"; if (save_vars) dump_octave_core (); if (sig_number < 0) { MINGW_SIGNAL_CLEANUP (); exit (1); } else { octave_set_signal_handler (sig_number, SIG_DFL); GNULIB_NAMESPACE::raise (sig_number); } } } sig_handler * octave_set_signal_handler (int sig, sig_handler *handler, bool restart_syscalls) { struct sigaction act, oact; act.sa_handler = handler; act.sa_flags = 0; #if defined (SIGALRM) if (sig == SIGALRM) { #if defined (SA_INTERRUPT) act.sa_flags |= SA_INTERRUPT; #endif } #endif #if defined (SA_RESTART) #if defined (SIGALRM) else #endif // FIXME -- Do we also need to explicitly disable SA_RESTART? if (restart_syscalls) act.sa_flags |= SA_RESTART; #endif GNULIB_NAMESPACE::sigemptyset (&act.sa_mask); GNULIB_NAMESPACE::sigemptyset (&oact.sa_mask); GNULIB_NAMESPACE::sigaction (sig, &act, &oact); return oact.sa_handler; } static void generic_sig_handler (int sig) { my_friendly_exit (strsignal (sig), sig); } // Handle SIGCHLD. #ifdef SIGCHLD static void sigchld_handler (int /* sig */) { octave_signal_caught = 1; octave_signals_caught[SIGCHLD] = true; } #endif /* defined (SIGCHLD) */ #ifdef SIGFPE #if defined (__alpha__) static void sigfpe_handler (int /* sig */) { if (can_interrupt && octave_interrupt_state >= 0) { octave_signal_caught = 1; octave_signals_caught[SIGFPE] = true; octave_interrupt_state++; } } #endif /* defined (__alpha__) */ #endif /* defined (SIGFPE) */ #if defined (SIGHUP) || defined (SIGTERM) static void sig_hup_or_term_handler (int sig) { switch (sig) { #if defined (SIGHUP) case SIGHUP: { if (Vsighup_dumps_octave_core) dump_octave_core (); } break; #endif #if defined (SIGTERM) case SIGTERM: { if (Vsigterm_dumps_octave_core) dump_octave_core (); } break; #endif default: break; } clean_up_and_exit (0); } #endif #if 0 #if defined (SIGWINCH) static void sigwinch_handler (int /* sig */) { command_editor::resize_terminal (); } #endif #endif // Handle SIGINT by restarting the parser (see octave.cc). // // This also has to work for SIGBREAK (on systems that have it), so we // use the value of sig, instead of just assuming that it is called // for SIGINT only. static void user_abort (const char *sig_name, int sig_number) { if (! octave_initialized) exit (1); if (can_interrupt) { if (Vdebug_on_interrupt) { if (! octave_debug_on_interrupt_state) { tree_evaluator::debug_mode = true; octave_debug_on_interrupt_state = true; return; } else { // Clear the flag and do normal interrupt stuff. tree_evaluator::debug_mode = bp_table::have_breakpoints () || Vdebugging; octave_debug_on_interrupt_state = false; } } if (octave_interrupt_immediately) { if (octave_interrupt_state == 0) octave_interrupt_state = 1; octave_jump_to_enclosing_context (); } else { // If we are already cleaning up from a previous interrupt, // take note of the fact that another interrupt signal has // arrived. if (octave_interrupt_state < 0) octave_interrupt_state = 0; octave_signal_caught = 1; octave_interrupt_state++; if (interactive && octave_interrupt_state == 2) std::cerr << "Press Control-C again to abort." << std::endl; if (octave_interrupt_state >= 3) my_friendly_exit (sig_name, sig_number, true); } } } static void sigint_handler (int sig) { user_abort (strsignal (sig), sig); } #ifdef SIGPIPE static void sigpipe_handler (int /* sig */) { octave_signal_caught = 1; octave_signals_caught[SIGPIPE] = true; // Don't loop forever on account of this. if (pipe_handler_error_count++ > 100 && octave_interrupt_state >= 0) octave_interrupt_state++; } #endif /* defined (SIGPIPE) */ octave_interrupt_handler octave_catch_interrupts (void) { octave_interrupt_handler retval; #ifdef SIGINT retval.int_handler = octave_set_signal_handler (SIGINT, sigint_handler); #endif #ifdef SIGBREAK retval.brk_handler = octave_set_signal_handler (SIGBREAK, sigint_handler); #endif return retval; } octave_interrupt_handler octave_ignore_interrupts (void) { octave_interrupt_handler retval; #ifdef SIGINT retval.int_handler = octave_set_signal_handler (SIGINT, SIG_IGN); #endif #ifdef SIGBREAK retval.brk_handler = octave_set_signal_handler (SIGBREAK, SIG_IGN); #endif return retval; } octave_interrupt_handler octave_set_interrupt_handler (const volatile octave_interrupt_handler& h, bool restart_syscalls) { octave_interrupt_handler retval; #ifdef SIGINT retval.int_handler = octave_set_signal_handler (SIGINT, h.int_handler, restart_syscalls); #endif #ifdef SIGBREAK retval.brk_handler = octave_set_signal_handler (SIGBREAK, h.brk_handler, restart_syscalls); #endif return retval; } // Install all the handlers for the signals we might care about. void install_signal_handlers (void) { for (int i = 0; i < NSIG; i++) octave_signals_caught[i] = false; octave_catch_interrupts (); #ifdef SIGABRT octave_set_signal_handler (SIGABRT, generic_sig_handler); #endif #ifdef SIGALRM octave_set_signal_handler (SIGALRM, generic_sig_handler); #endif #ifdef SIGBUS octave_set_signal_handler (SIGBUS, generic_sig_handler); #endif #ifdef SIGCHLD octave_set_signal_handler (SIGCHLD, sigchld_handler); #endif // SIGCLD // SIGCONT #ifdef SIGEMT octave_set_signal_handler (SIGEMT, generic_sig_handler); #endif #ifdef SIGFPE #if defined (__alpha__) octave_set_signal_handler (SIGFPE, sigfpe_handler); #else octave_set_signal_handler (SIGFPE, generic_sig_handler); #endif #endif #ifdef SIGHUP octave_set_signal_handler (SIGHUP, sig_hup_or_term_handler); #endif #ifdef SIGILL octave_set_signal_handler (SIGILL, generic_sig_handler); #endif // SIGINFO // SIGINT #ifdef SIGIOT octave_set_signal_handler (SIGIOT, generic_sig_handler); #endif #ifdef SIGLOST octave_set_signal_handler (SIGLOST, generic_sig_handler); #endif #ifdef SIGPIPE octave_set_signal_handler (SIGPIPE, sigpipe_handler); #endif #ifdef SIGPOLL octave_set_signal_handler (SIGPOLL, SIG_IGN); #endif // SIGPROF // SIGPWR #ifdef SIGQUIT octave_set_signal_handler (SIGQUIT, generic_sig_handler); #endif #ifdef SIGSEGV octave_set_signal_handler (SIGSEGV, generic_sig_handler); #endif // SIGSTOP #ifdef SIGSYS octave_set_signal_handler (SIGSYS, generic_sig_handler); #endif #ifdef SIGTERM octave_set_signal_handler (SIGTERM, sig_hup_or_term_handler); #endif #ifdef SIGTRAP octave_set_signal_handler (SIGTRAP, generic_sig_handler); #endif // SIGTSTP // SIGTTIN // SIGTTOU // SIGURG #ifdef SIGUSR1 octave_set_signal_handler (SIGUSR1, generic_sig_handler); #endif #ifdef SIGUSR2 octave_set_signal_handler (SIGUSR2, generic_sig_handler); #endif #ifdef SIGVTALRM octave_set_signal_handler (SIGVTALRM, generic_sig_handler); #endif #ifdef SIGIO octave_set_signal_handler (SIGIO, SIG_IGN); #endif #if 0 #ifdef SIGWINCH octave_set_signal_handler (SIGWINCH, sigwinch_handler); #endif #endif #ifdef SIGXCPU octave_set_signal_handler (SIGXCPU, generic_sig_handler); #endif #ifdef SIGXFSZ octave_set_signal_handler (SIGXFSZ, generic_sig_handler); #endif } static octave_scalar_map make_sig_struct (void) { octave_scalar_map m; #ifdef SIGABRT m.assign ("ABRT", SIGABRT); #endif #ifdef SIGALRM m.assign ("ALRM", SIGALRM); #endif #ifdef SIGBUS m.assign ("BUS", SIGBUS); #endif #ifdef SIGCHLD m.assign ("CHLD", SIGCHLD); #endif #ifdef SIGCLD m.assign ("CLD", SIGCLD); #endif #ifdef SIGCONT m.assign ("CONT", SIGCONT); #endif #ifdef SIGEMT m.assign ("EMT", SIGEMT); #endif #ifdef SIGFPE m.assign ("FPE", SIGFPE); #endif #ifdef SIGHUP m.assign ("HUP", SIGHUP); #endif #ifdef SIGILL m.assign ("ILL", SIGILL); #endif #ifdef SIGINFO m.assign ("INFO", SIGINFO); #endif #ifdef SIGINT m.assign ("INT", SIGINT); #endif #ifdef SIGIO m.assign ("IO", SIGIO); #endif #ifdef SIGIOT m.assign ("IOT", SIGIOT); #endif #ifdef SIGKILL m.assign ("KILL", SIGKILL); #endif #ifdef SIGLOST m.assign ("LOST", SIGLOST); #endif #ifdef SIGPIPE m.assign ("PIPE", SIGPIPE); #endif #ifdef SIGPOLL m.assign ("POLL", SIGPOLL); #endif #ifdef SIGPROF m.assign ("PROF", SIGPROF); #endif #ifdef SIGPWR m.assign ("PWR", SIGPWR); #endif #ifdef SIGQUIT m.assign ("QUIT", SIGQUIT); #endif #ifdef SIGSEGV m.assign ("SEGV", SIGSEGV); #endif #ifdef SIGSTKFLT m.assign ("STKFLT", SIGSTKFLT); #endif #ifdef SIGSTOP m.assign ("STOP", SIGSTOP); #endif #ifdef SIGSYS m.assign ("SYS", SIGSYS); #endif #ifdef SIGTERM m.assign ("TERM", SIGTERM); #endif #ifdef SIGTRAP m.assign ("TRAP", SIGTRAP); #endif #ifdef SIGTSTP m.assign ("TSTP", SIGTSTP); #endif #ifdef SIGTTIN m.assign ("TTIN", SIGTTIN); #endif #ifdef SIGTTOU m.assign ("TTOU", SIGTTOU); #endif #ifdef SIGUNUSED m.assign ("UNUSED", SIGUNUSED); #endif #ifdef SIGURG m.assign ("URG", SIGURG); #endif #ifdef SIGUSR1 m.assign ("USR1", SIGUSR1); #endif #ifdef SIGUSR2 m.assign ("USR2", SIGUSR2); #endif #ifdef SIGVTALRM m.assign ("VTALRM", SIGVTALRM); #endif #ifdef SIGWINCH m.assign ("WINCH", SIGWINCH); #endif #ifdef SIGXCPU m.assign ("XCPU", SIGXCPU); #endif #ifdef SIGXFSZ m.assign ("XFSZ", SIGXFSZ); #endif return m; } octave_child_list::octave_child_list_rep *octave_child_list::instance = 0; bool octave_child_list::instance_ok (void) { bool retval = true; if (! instance) { instance = new octave_child_list_rep (); if (instance) singleton_cleanup_list::add (cleanup_instance); } if (! instance) { ::error ("unable to create child list object!"); retval = false; } return retval; } void octave_child_list::insert (pid_t pid, octave_child::child_event_handler f) { if (instance_ok ()) instance->insert (pid, f); } void octave_child_list::reap (void) { if (instance_ok ()) instance->reap (); } bool octave_child_list::wait (void) { return (instance_ok ()) ? instance->wait () : false; } class pid_equal { public: pid_equal (pid_t v) : val (v) { } bool operator () (const octave_child& oc) const { return oc.pid == val; } private: pid_t val; }; void octave_child_list::remove (pid_t pid) { if (instance_ok ()) instance->remove_if (pid_equal (pid)); } #define OCL_REP octave_child_list::octave_child_list_rep void OCL_REP::insert (pid_t pid, octave_child::child_event_handler f) { append (octave_child (pid, f)); } void OCL_REP::reap (void) { // Mark the record for PID invalid. for (iterator p = begin (); p != end (); p++) { // The call to the octave_child::child_event_handler might // invalidate the iterator (for example, by calling // octave_child_list::remove), so we increment the iterator // here. octave_child& oc = *p; if (oc.have_status) { oc.have_status = 0; octave_child::child_event_handler f = oc.handler; if (f && f (oc.pid, oc.status)) oc.pid = -1; } } remove_if (pid_equal (-1)); } // Wait on our children and record any changes in their status. bool OCL_REP::wait (void) { bool retval = false; for (iterator p = begin (); p != end (); p++) { octave_child& oc = *p; pid_t pid = oc.pid; if (pid > 0) { int status; if (octave_syscalls::waitpid (pid, &status, WNOHANG) > 0) { oc.have_status = 1; oc.status = status; retval = true; break; } } } return retval; } DEFUN (SIG, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} SIG ()\n\ Return a structure containing Unix signal names and their defined values.\n\ @end deftypefn") { octave_value retval; if (args.length () == 0) { static octave_scalar_map m = make_sig_struct (); retval = m; } else print_usage (); return retval; } /* %!assert (isstruct (SIG ())) %!assert (! isempty (SIG ())) %!error SIG (1) */ DEFUN (debug_on_interrupt, args, nargout, "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{val} =} debug_on_interrupt ()\n\ @deftypefnx {Built-in Function} {@var{old_val} =} debug_on_interrupt (@var{new_val})\n\ @deftypefnx {Built-in Function} {} debug_on_interrupt (@var{new_val}, \"local\")\n\ Query or set the internal variable that controls whether Octave will try\n\ to enter debugging mode when it receives an interrupt signal (typically\n\ generated with @kbd{C-c}). If a second interrupt signal is received\n\ before reaching the debugging mode, a normal interrupt will occur.\n\ \n\ When called from inside a function with the @qcode{\"local\"} option, the\n\ variable is changed locally for the function and any subroutines it calls. \n\ The original variable value is restored when exiting the function.\n\ @seealso{debug_on_error, debug_on_warning}\n\ @end deftypefn") { return SET_INTERNAL_VARIABLE (debug_on_interrupt); } /* %!test %! orig_val = debug_on_interrupt (); %! old_val = debug_on_interrupt (! orig_val); %! assert (orig_val, old_val); %! assert (debug_on_interrupt (), ! orig_val); %! debug_on_interrupt (orig_val); %! assert (debug_on_interrupt (), orig_val); %!error (debug_on_interrupt (1, 2)) */ DEFUN (sighup_dumps_octave_core, args, nargout, "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{val} =} sighup_dumps_octave_core ()\n\ @deftypefnx {Built-in Function} {@var{old_val} =} sighup_dumps_octave_core (@var{new_val})\n\ @deftypefnx {Built-in Function} {} sighup_dumps_octave_core (@var{new_val}, \"local\")\n\ Query or set the internal variable that controls whether Octave tries\n\ to save all current variables to the file @file{octave-workspace} if it\n\ receives a hangup signal.\n\ \n\ When called from inside a function with the @qcode{\"local\"} option, the\n\ variable is changed locally for the function and any subroutines it calls. \n\ The original variable value is restored when exiting the function.\n\ @end deftypefn") { return SET_INTERNAL_VARIABLE (sighup_dumps_octave_core); } /* %!test %! orig_val = sighup_dumps_octave_core (); %! old_val = sighup_dumps_octave_core (! orig_val); %! assert (orig_val, old_val); %! assert (sighup_dumps_octave_core (), ! orig_val); %! sighup_dumps_octave_core (orig_val); %! assert (sighup_dumps_octave_core (), orig_val); %!error (sighup_dumps_octave_core (1, 2)) */ DEFUN (sigterm_dumps_octave_core, args, nargout, "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{val} =} sigterm_dumps_octave_core ()\n\ @deftypefnx {Built-in Function} {@var{old_val} =} sigterm_dumps_octave_core (@var{new_val})\n\ @deftypefnx {Built-in Function} {} sigterm_dumps_octave_core (@var{new_val}, \"local\")\n\ Query or set the internal variable that controls whether Octave tries\n\ to save all current variables to the file @file{octave-workspace} if it\n\ receives a terminate signal.\n\ \n\ When called from inside a function with the @qcode{\"local\"} option, the\n\ variable is changed locally for the function and any subroutines it calls. \n\ The original variable value is restored when exiting the function.\n\ @end deftypefn") { return SET_INTERNAL_VARIABLE (sigterm_dumps_octave_core); } /* %!test %! orig_val = sigterm_dumps_octave_core (); %! old_val = sigterm_dumps_octave_core (! orig_val); %! assert (orig_val, old_val); %! assert (sigterm_dumps_octave_core (), ! orig_val); %! sigterm_dumps_octave_core (orig_val); %! assert (sigterm_dumps_octave_core (), orig_val); %!error (sigterm_dumps_octave_core (1, 2)) */