Mercurial > octave
view libinterp/corefcn/sighandlers.cc @ 31771:21f9b34eb893
maint: Eliminate "(void)" in C++ function prototypes/declarations.
* mk-opts.pl, external.txi, embedded.cc, make_int.cc, standalone.cc,
standalonebuiltin.cc, BaseControl.cc, BaseControl.h, ButtonControl.cc,
ButtonControl.h, ButtonGroup.cc, ButtonGroup.h, Canvas.cc, Canvas.h,
CheckBoxControl.cc, CheckBoxControl.h, Container.cc, Container.h,
ContextMenu.cc, ContextMenu.h, EditControl.cc, EditControl.h, Figure.cc,
Figure.h, FigureWindow.cc, FigureWindow.h, GLCanvas.cc, GLCanvas.h,
GenericEventNotify.h, KeyMap.cc, ListBoxControl.cc, ListBoxControl.h,
Logger.cc, Logger.h, Menu.cc, Menu.h, MenuContainer.h, Object.cc, Object.h,
ObjectProxy.cc, ObjectProxy.h, Panel.cc, Panel.h, PopupMenuControl.cc,
PopupMenuControl.h, PushButtonControl.cc, PushButtonControl.h, PushTool.cc,
PushTool.h, RadioButtonControl.cc, RadioButtonControl.h, SliderControl.cc,
SliderControl.h, Table.cc, Table.h, TextControl.cc, TextControl.h, TextEdit.h,
ToggleButtonControl.cc, ToggleButtonControl.h, ToggleTool.cc, ToggleTool.h,
ToolBar.cc, ToolBar.h, ToolBarButton.cc, ToolBarButton.h, gl-select.cc,
gl-select.h, qopengl-functions.h, qt-graphics-toolkit.h, qdialog.cpp,
qfontdialog.cpp, qprintdialog_win.cpp, liboctgui-build-info.h,
liboctgui-build-info.in.cc, color-picker.cc, color-picker.h, command-widget.cc,
command-widget.h, community-news.cc, community-news.h, dialog.cc, dialog.h,
documentation-bookmarks.cc, documentation-bookmarks.h,
documentation-dock-widget.cc, documentation-dock-widget.h, documentation.cc,
documentation.h, dw-main-window.cc, dw-main-window.h,
external-editor-interface.cc, external-editor-interface.h,
files-dock-widget.cc, files-dock-widget.h, find-files-dialog.cc,
find-files-dialog.h, find-files-model.cc, find-files-model.h,
gui-preferences.cc, gui-preferences.h, gui-settings.cc, gui-settings.h,
history-dock-widget.cc, history-dock-widget.h, interpreter-qobject.cc,
interpreter-qobject.h, file-editor-interface.h, file-editor-tab.cc,
file-editor-tab.h, file-editor.cc, file-editor.h, find-dialog.cc,
find-dialog.h, marker.cc, marker.h, octave-qscintilla.cc, octave-qscintilla.h,
octave-txt-lexer.cc, octave-txt-lexer.h, main-window.cc, main-window.h,
news-reader.cc, news-reader.h, octave-dock-widget.cc, octave-dock-widget.h,
octave-qobject.cc, octave-qobject.h, qt-application.cc, qt-application.h,
qt-interpreter-events.cc, qt-interpreter-events.h, release-notes.cc,
release-notes.h, set-path-dialog.cc, set-path-dialog.h, set-path-model.cc,
set-path-model.h, settings-dialog.cc, settings-dialog.h,
shortcuts-tree-widget.cc, shortcuts-tree-widget.h, tab-bar.cc, tab-bar.h,
terminal-dock-widget.cc, terminal-dock-widget.h, variable-editor-model.cc,
variable-editor-model.h, variable-editor.cc, variable-editor.h,
welcome-wizard.cc, welcome-wizard.h, workspace-model.cc, workspace-model.h,
workspace-view.cc, workspace-view.h, build-env.h, Cell.cc, Cell.h,
__contourc__.cc, __magick_read__.cc, auto-shlib.cc, auto-shlib.h,
base-text-renderer.h, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
call-stack.cc, call-stack.h, debug.cc, defaults.cc, defaults.h, defun.cc,
display.cc, display.h, dynamic-ld.cc, dynamic-ld.h, environment.cc,
environment.h, error.cc, error.h, errwarn.cc, errwarn.h, event-manager.cc,
event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h,
ft-text-renderer.cc, ft-text-renderer.h, genprops.awk, gh-manager.cc,
gh-manager.h, gl-render.cc, gl-render.h, gl2ps-print.cc, graphics-toolkit.h,
graphics.cc, graphics.in.h, gtk-manager.cc, gtk-manager.h, help.cc, help.h,
hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h,
interpreter.cc, interpreter.h, jsondecode.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
ls-hdf5.cc, ls-hdf5.h, mxarray.h, oct-errno.h, oct-errno.in.cc, oct-fstrm.cc,
oct-fstrm.h, oct-handle.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc,
oct-iostrm.h, oct-map.cc, oct-map.h, oct-opengl.h, oct-prcstrm.cc,
oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.h, oct-stdstrm.h,
oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h,
oct-tex-lexer.in.ll, pager.cc, pager.h, pr-flt-fmt.cc, pr-flt-fmt.h,
pr-output.cc, pr-output.h, procstream.cc, procstream.h, settings.cc,
settings.h, sighandlers.cc, sighandlers.h, stack-frame.cc, stack-frame.h,
svd.cc, syminfo.cc, syminfo.h, symrec.cc, symrec.h, symscope.cc, symscope.h,
symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h,
text-renderer.cc, text-renderer.h, toplev.cc, url-handle-manager.cc,
url-handle-manager.h, variables.cc, xpow.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, audiodevinfo.cc, gzip.cc,
liboctinterp-build-info.h, liboctinterp-build-info.in.cc,
mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h,
cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h,
cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h,
cdef-utils.cc, cdef-utils.h, ov-base-diag.cc, ov-base-diag.h, ov-base-int.cc,
ov-base-int.h, ov-base-mat.cc, ov-base-mat.h, ov-base-scalar.cc,
ov-base-scalar.h, ov-base-sparse.cc, ov-base-sparse.h, ov-base.cc, ov-base.h,
ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc,
ov-bool.h, ov-builtin.cc, ov-builtin.h, ov-cell.cc, ov-cell.h, ov-ch-mat.cc,
ov-ch-mat.h, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h,
ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.cc,
ov-cx-diag.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc, ov-cx-sparse.h,
ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.cc,
ov-fcn.h, ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h,
ov-flt-cx-diag.cc, ov-flt-cx-diag.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h,
ov-flt-re-diag.cc, ov-flt-re-diag.h, ov-flt-re-mat.cc, ov-flt-re-mat.h,
ov-intx.h, ov-java.cc, ov-java.h, ov-lazy-idx.cc, ov-lazy-idx.h,
ov-legacy-range.cc, ov-legacy-range.h, ov-magic-int.cc, ov-magic-int.h,
ov-mex-fcn.cc, ov-mex-fcn.h, ov-null-mat.cc, ov-null-mat.h, ov-oncleanup.cc,
ov-oncleanup.h, ov-perm.cc, ov-perm.h, ov-range.cc, ov-range.h, ov-re-diag.cc,
ov-re-diag.h, ov-re-mat.cc, ov-re-mat.h, ov-re-sparse.cc, ov-re-sparse.h,
ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov-str-mat.h, ov-struct.cc,
ov-struct.h, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc,
ov.h, ovl.cc, ovl.h, octave.cc, octave.h, anon-fcn-validator.h, bp-table.cc,
bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll,
oct-lvalue.cc, oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h,
pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc,
pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h,
pt-binop.cc, pt-binop.h, pt-bp.h, pt-cbinop.h, pt-cell.h, pt-check.h,
pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h, pt-decl.cc,
pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc,
pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc,
pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.h, pt-misc.cc, pt-misc.h,
pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h,
pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h,
pt-walk.h, pt.cc, pt.h, token.cc, token.h, usage.h, Array-base.cc, Array.h,
CColVector.cc, CColVector.h, CDiagMatrix.cc, CDiagMatrix.h, CMatrix.cc,
CMatrix.h, CNDArray.cc, CNDArray.h, CRowVector.cc, CRowVector.h, CSparse.cc,
CSparse.h, DiagArray2.cc, DiagArray2.h, MArray.cc, MArray.h, MDiagArray2.h,
MSparse.h, MatrixType.cc, MatrixType.h, PermMatrix.cc, PermMatrix.h, Range.cc,
Range.h, Sparse-b.cc, Sparse.cc, Sparse.h, boolMatrix.cc, boolMatrix.h,
boolNDArray.cc, boolNDArray.h, boolSparse.cc, boolSparse.h, chMatrix.h,
chNDArray.h, dColVector.cc, dColVector.h, dDiagMatrix.cc, dDiagMatrix.h,
dMatrix.cc, dMatrix.h, dNDArray.cc, dNDArray.h, dRowVector.cc, dRowVector.h,
dSparse.cc, dSparse.h, dim-vector.cc, dim-vector.h, fCColVector.cc,
fCColVector.h, fCDiagMatrix.cc, fCDiagMatrix.h, fCMatrix.cc, fCMatrix.h,
fCNDArray.cc, fCNDArray.h, fCRowVector.cc, fCRowVector.h, fColVector.cc,
fColVector.h, fDiagMatrix.cc, fDiagMatrix.h, fMatrix.cc, fMatrix.h,
fNDArray.cc, fNDArray.h, fRowVector.cc, fRowVector.h, idx-vector.cc,
idx-vector.h, intNDArray.cc, intNDArray.h, liboctave-build-info.h,
liboctave-build-info.in.cc, CollocWt.cc, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h,
DAERTFunc.h, DASPK.cc, DASPK.h, DASRT.cc, DASRT.h, DASSL.cc, DASSL.h, DET.h,
EIG.h, LSODE.cc, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h, Quad.h,
aepbalance.cc, aepbalance.h, base-dae.h, base-de.h, chol.cc, chol.h,
eigs-base.cc, fEIG.h, gepbalance.h, gsvd.cc, gsvd.h, hess.h, lu.cc, lu.h,
oct-fftw.cc, oct-fftw.h, oct-rand.cc, oct-rand.h, oct-spparms.cc,
oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randmtzig.cc, randmtzig.h, schur.h,
sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc,
sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h,
file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h,
lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h,
oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc,
oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h,
action-container.h, base-list.h, caseless-str.h, cmd-edit.cc, cmd-edit.h,
cmd-hist.cc, cmd-hist.h, data-conv.cc, file-info.h, glob-match.cc,
glob-match.h, kpse.cc, kpse.h, lo-array-errwarn.cc, lo-array-errwarn.h,
lo-hash.cc, lo-hash.h, lo-ieee.cc, lo-ieee.h, lo-regexp.cc, lo-regexp.h,
oct-inttypes.cc, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h,
oct-shlib.cc, oct-shlib.h, oct-sort.cc, oct-sort.h, oct-sparse.cc,
octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc,
singleton-cleanup.cc, singleton-cleanup.h, str-vec.cc, str-vec.h,
unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h, version.cc,
version.in.h, cxx-signal-helpers.cc, acinclude.m4, main-cli.cc, main-gui.cc,
main.in.cc, mkoctfile.in.cc, octave-build-info.h, octave-build-info.in.cc,
octave-config.in.cc, octave-svgconvert.cc, shared-fcns.h:
maint: Eliminate "(void)" in C++ function prototypes/declarations.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 24 Jan 2023 17:19:44 -0800 |
parents | 597f3ee61a48 |
children | 5f0b8101234e |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1993-2023 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // 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 // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <csignal> #include <cstdlib> #include <iostream> #include <new> #if defined (OCTAVE_USE_WINDOWS_API) # define WIN32_LEAN_AND_MEAN # include <windows.h> #endif #include "child-list.h" #include "cmd-edit.h" #include "oct-syscalls.h" #include "quit.h" #include "signal-wrappers.h" #include "defun.h" #include "error.h" #include "input.h" #include "interpreter-private.h" #include "interpreter.h" #include "load-save.h" #include "octave.h" #include "oct-map.h" #include "pager.h" #include "sighandlers.h" #include "sysdep.h" #include "utils.h" #include "variables.h" OCTAVE_BEGIN_NAMESPACE(octave) // 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 SIGQUIT signal. static bool Vsigquit_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 signal_handler. static bool *signals_caught = nullptr; static void my_friendly_exit (int sig, bool save_vars = true) { std::cerr << "fatal: caught signal " << octave_strsignal_wrapper (sig) << " -- stopping myself..." << std::endl; if (save_vars) { load_save_system& load_save_sys = __get_load_save_system__ (); load_save_sys.dump_octave_core (); } sysdep_cleanup (); throw exit_exception (1); } // Called from octave_quit () to actually do something about the signals // we have caught. void respond_to_pending_signals () { // The list of signals is relatively short, so we will just go // linearly through the list. // Interrupt signals are currently handled separately. static int sigint; static const bool have_sigint = octave_get_sig_number ("SIGINT", &sigint); static int sigbreak; static const bool have_sigbreak = octave_get_sig_number ("SIGBREAK", &sigbreak); // Termination signals. static int sighup; static const bool have_sighup = octave_get_sig_number ("SIGHUP", &sighup); static int sigquit; static const bool have_sigquit = octave_get_sig_number ("SIGQUIT", &sigquit); static int sigterm; static const bool have_sigterm = octave_get_sig_number ("SIGTERM", &sigterm); // Alarm signals. static int sigalrm; static const bool have_sigalrm = octave_get_sig_number ("SIGALRM", &sigalrm); static int sigvtalrm; static const bool have_sigvtalrm = octave_get_sig_number ("SIGVTALRM", &sigvtalrm); // I/O signals. static int sigio; static const bool have_sigio = octave_get_sig_number ("SIGIO", &sigio); static int siglost; static const bool have_siglost = octave_get_sig_number ("SIGLOST", &siglost); static int sigpipe; static const bool have_sigpipe = octave_get_sig_number ("SIGPIPE", &sigpipe); // Job control signals. static int sigchld; static const bool have_sigchld = octave_get_sig_number ("SIGCHLD", &sigchld); static int sigcld; static const bool have_sigcld = octave_get_sig_number ("SIGCLD", &sigcld); // Resource limit signals. static int sigxcpu; static const bool have_sigxcpu = octave_get_sig_number ("SIGXCPU", &sigxcpu); static int sigxfsz; static const bool have_sigxfsz = octave_get_sig_number ("SIGXFSZ", &sigxfsz); // User signals. static int sigusr1; static const bool have_sigusr1 = octave_get_sig_number ("SIGUSR1", &sigusr1); static int sigusr2; static const bool have_sigusr2 = octave_get_sig_number ("SIGUSR2", &sigusr2); child_list& kids = __get_child_list__ (); for (int sig = 0; sig < octave_num_signals (); sig++) { if (signals_caught[sig]) { signals_caught[sig] = false; if ((have_sigchld && sig == sigchld) || (have_sigcld && sig == sigcld)) { // FIXME: should we block or ignore? volatile interrupt_handler saved_interrupt_handler = ignore_interrupts (); void *context = octave_block_child (); kids.wait (); set_interrupt_handler (saved_interrupt_handler); octave_unblock_child (context); kids.reap (); } else if (have_sigpipe && sig == sigpipe) { std::cerr << "warning: broken pipe" << std::endl; // Don't loop forever on account of this. // FIXME: is this really needed? Does it do anything // useful now? if (pipe_handler_error_count++ > 100 && octave_interrupt_state >= 0) octave_interrupt_state++; } else if (have_sighup && sig == sighup) my_friendly_exit (sighup, Vsighup_dumps_octave_core); else if (have_sigquit && sig == sigquit) my_friendly_exit (sigquit, Vsigquit_dumps_octave_core); else if (have_sigterm && sig == sigterm) my_friendly_exit (sigterm, Vsigterm_dumps_octave_core); else if ((have_sigalrm && sig == sigalrm) || (have_sigvtalrm && sig == sigvtalrm) || (have_sigio && sig == sigio) || (have_siglost && sig == siglost) || (have_sigxcpu && sig == sigxcpu) || (have_sigxfsz && sig == sigxfsz) || (have_sigusr1 && sig == sigusr1) || (have_sigusr2 && sig == sigusr2)) std::cerr << "warning: ignoring signal: " << octave_strsignal_wrapper (sig) << std::endl; else if ((have_sigint && sig == sigint) || (have_sigbreak && sig == sigbreak)) ; // Handled separately; do nothing. else std::cerr << "warning: ignoring unexpected signal: " << octave_strsignal_wrapper (sig) << std::endl; } } } sig_handler * set_signal_handler (int sig, sig_handler *handler, bool restart_syscalls) { return octave_set_signal_handler_internal (sig, handler, restart_syscalls); } sig_handler * set_signal_handler (const char *signame, sig_handler *handler, bool restart_syscalls) { return octave_set_signal_handler_by_name (signame, handler, restart_syscalls); } static void generic_sig_handler (int sig) { // FIXME: this function may execute in a separate signal handler or // signal watcher thread so it should probably be more careful about // how it accesses global objects. octave_signal_caught = 1; signals_caught[sig] = true; static int sigint; static const bool have_sigint = octave_get_sig_number ("SIGINT", &sigint); static int sigbreak; static const bool have_sigbreak = octave_get_sig_number ("SIGBREAK", &sigbreak); if ((have_sigint && sig == sigint) || (have_sigbreak && sig == sigbreak)) { if (! octave_initialized) exit (1); if (can_interrupt) { octave_signal_caught = 1; octave_interrupt_state++; } } } static void deadly_sig_handler (int sig) { std::cerr << "fatal: caught signal " << octave_strsignal_wrapper (sig) << " -- stopping myself..." << std::endl; octave_set_default_signal_handler (sig); octave_raise_wrapper (sig); } static void fpe_sig_handler (int) { // FIXME: is there something better we can do? std::cerr << "warning: floating point exception" << std::endl; } interrupt_handler catch_interrupts () { interrupt_handler retval; retval.int_handler = set_signal_handler ("SIGINT", generic_sig_handler); retval.brk_handler = set_signal_handler ("SIGBREAK", generic_sig_handler); return retval; } interrupt_handler ignore_interrupts () { interrupt_handler retval; retval.int_handler = set_signal_handler ("SIGINT", SIG_IGN); retval.brk_handler = set_signal_handler ("SIGBREAK", SIG_IGN); return retval; } interrupt_handler set_interrupt_handler (const volatile interrupt_handler& h, bool restart_syscalls) { interrupt_handler retval; retval.int_handler = set_signal_handler ("SIGINT", h.int_handler, restart_syscalls); retval.brk_handler = set_signal_handler ("SIGBREAK", h.brk_handler, restart_syscalls); return retval; } // Install all the handlers for the signals we might care about. void install_signal_handlers () { if (! signals_caught) signals_caught = new bool [octave_num_signals ()]; for (int i = 0; i < octave_num_signals (); i++) signals_caught[i] = false; // Interrupt signals. catch_interrupts (); // Program Error signals. These are most likely unrecoverable for // us. set_signal_handler ("SIGABRT", deadly_sig_handler); set_signal_handler ("SIGBUS", deadly_sig_handler); set_signal_handler ("SIGEMT", deadly_sig_handler); set_signal_handler ("SIGILL", deadly_sig_handler); // SIGIOT is normally another name for SIGABRT. set_signal_handler ("SIGIOT", deadly_sig_handler); set_signal_handler ("SIGSEGV", deadly_sig_handler); set_signal_handler ("SIGSYS", deadly_sig_handler); set_signal_handler ("SIGTRAP", deadly_sig_handler); // Handle SIGFPE separately. set_signal_handler ("SIGFPE", fpe_sig_handler); // Handle other signals for which the default action is to terminate // the program. // Termination signals. set_signal_handler ("SIGHUP", generic_sig_handler); set_signal_handler ("SIGQUIT", generic_sig_handler); set_signal_handler ("SIGTERM", generic_sig_handler); // Alarm signals. set_signal_handler ("SIGALRM", generic_sig_handler); set_signal_handler ("SIGVTALRM", generic_sig_handler); // I/O signals. set_signal_handler ("SIGLOST", generic_sig_handler); set_signal_handler ("SIGPIPE", generic_sig_handler); // Job control signals. We only recognize signals about child // processes. set_signal_handler ("SIGCHLD", generic_sig_handler); set_signal_handler ("SIGCLD", generic_sig_handler); // Resource limit signals. // FIXME: does it really make sense to try to handle the CPU limit // signal? set_signal_handler ("SIGXCPU", generic_sig_handler); set_signal_handler ("SIGXFSZ", generic_sig_handler); // User signals. set_signal_handler ("SIGUSR1", generic_sig_handler); set_signal_handler ("SIGUSR2", generic_sig_handler); // This does nothing on Windows systems. octave_create_interrupt_watcher_thread (generic_sig_handler); } static void set_sig_struct_field (octave_scalar_map& m, const char *signame) { int signum; // The names in the struct do not include the leading "SIG" prefix. if (octave_get_sig_number (signame, &signum)) m.assign (&signame[3], signum); } static octave_scalar_map make_sig_struct () { octave_scalar_map m; set_sig_struct_field (m, "SIGABRT"); set_sig_struct_field (m, "SIGALRM"); set_sig_struct_field (m, "SIGBUS"); set_sig_struct_field (m, "SIGCHLD"); set_sig_struct_field (m, "SIGCLD"); set_sig_struct_field (m, "SIGCONT"); set_sig_struct_field (m, "SIGEMT"); set_sig_struct_field (m, "SIGFPE"); set_sig_struct_field (m, "SIGHUP"); set_sig_struct_field (m, "SIGILL"); set_sig_struct_field (m, "SIGINFO"); set_sig_struct_field (m, "SIGINT"); set_sig_struct_field (m, "SIGIO"); set_sig_struct_field (m, "SIGIOT"); set_sig_struct_field (m, "SIGKILL"); set_sig_struct_field (m, "SIGLOST"); set_sig_struct_field (m, "SIGPIPE"); set_sig_struct_field (m, "SIGPOLL"); set_sig_struct_field (m, "SIGPROF"); set_sig_struct_field (m, "SIGPWR"); set_sig_struct_field (m, "SIGQUIT"); set_sig_struct_field (m, "SIGSEGV"); set_sig_struct_field (m, "SIGSTKFLT"); set_sig_struct_field (m, "SIGSTOP"); set_sig_struct_field (m, "SIGSYS"); set_sig_struct_field (m, "SIGTERM"); set_sig_struct_field (m, "SIGTRAP"); set_sig_struct_field (m, "SIGTSTP"); set_sig_struct_field (m, "SIGTTIN"); set_sig_struct_field (m, "SIGTTOU"); set_sig_struct_field (m, "SIGUNUSED"); set_sig_struct_field (m, "SIGURG"); set_sig_struct_field (m, "SIGUSR1"); set_sig_struct_field (m, "SIGUSR2"); set_sig_struct_field (m, "SIGVTALRM"); set_sig_struct_field (m, "SIGWINCH"); set_sig_struct_field (m, "SIGXCPU"); set_sig_struct_field (m, "SIGXFSZ"); return m; } DEFUN (SIG, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{S} =} SIG () Return a structure containing Unix signal names and their defined values. @end deftypefn */) { if (args.length () != 0) print_usage (); static octave_scalar_map m = make_sig_struct (); return ovl (m); } /* %!assert (isstruct (SIG ())) %!assert (! isempty (SIG ())) %!error SIG (1) */ DEFUN (debug_on_interrupt, args, nargout, doc: /* -*- texinfo -*- @deftypefn {} {@var{val} =} debug_on_interrupt () @deftypefnx {} {@var{old_val} =} debug_on_interrupt (@var{new_val}) @deftypefnx {} {@var{old_val} =} debug_on_interrupt (@var{new_val}, "local") Query or set the internal variable that controls whether Octave will try to enter debugging mode when it receives an interrupt signal (typically generated with @kbd{C-c}). If a second interrupt signal is received before reaching the debugging mode, a normal interrupt will occur. When called from inside a function with the @qcode{"local"} option, the variable is changed locally for the function and any subroutines it calls. The original variable value is restored when exiting the function. @seealso{debug_on_error, debug_on_warning} @end deftypefn */) { return set_internal_variable (Vdebug_on_interrupt, args, nargout, "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, doc: /* -*- texinfo -*- @deftypefn {} {@var{val} =} sighup_dumps_octave_core () @deftypefnx {} {@var{old_val} =} sighup_dumps_octave_core (@var{new_val}) @deftypefnx {} {@var{old_val} =} sighup_dumps_octave_core (@var{new_val}, "local") Query or set the internal variable that controls whether Octave tries to save all current variables to the file @file{octave-workspace} if it receives a hangup signal. When called from inside a function with the @qcode{"local"} option, the variable is changed locally for the function and any subroutines it calls. The original variable value is restored when exiting the function. @end deftypefn */) { return set_internal_variable (Vsighup_dumps_octave_core, args, nargout, "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 (sigquit_dumps_octave_core, args, nargout, doc: /* -*- texinfo -*- @deftypefn {} {@var{val} =} sigquit_dumps_octave_core () @deftypefnx {} {@var{old_val} =} sigquit_dumps_octave_core (@var{new_val}) @deftypefnx {} {@var{old_val} =} sigquit_dumps_octave_core (@var{new_val}, "local") Query or set the internal variable that controls whether Octave tries to save all current variables to the file @file{octave-workspace} if it receives a quit signal. When called from inside a function with the @qcode{"local"} option, the variable is changed locally for the function and any subroutines it calls. The original variable value is restored when exiting the function. @end deftypefn */) { return set_internal_variable (Vsigquit_dumps_octave_core, args, nargout, "sigquit_dumps_octave_core"); } /* %!test %! orig_val = sigquit_dumps_octave_core (); %! old_val = sigquit_dumps_octave_core (! orig_val); %! assert (orig_val, old_val); %! assert (sigquit_dumps_octave_core (), ! orig_val); %! sigquit_dumps_octave_core (orig_val); %! assert (sigquit_dumps_octave_core (), orig_val); %!error sigquit_dumps_octave_core (1, 2) */ DEFUN (sigterm_dumps_octave_core, args, nargout, doc: /* -*- texinfo -*- @deftypefn {} {@var{val} =} sigterm_dumps_octave_core () @deftypefnx {} {@var{old_val} =} sigterm_dumps_octave_core (@var{new_val}) @deftypefnx {} {@var{old_val} =} sigterm_dumps_octave_core (@var{new_val}, "local") Query or set the internal variable that controls whether Octave tries to save all current variables to the file @file{octave-workspace} if it receives a terminate signal. When called from inside a function with the @qcode{"local"} option, the variable is changed locally for the function and any subroutines it calls. The original variable value is restored when exiting the function. @end deftypefn */) { return set_internal_variable (Vsigterm_dumps_octave_core, args, nargout, "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) */ OCTAVE_END_NAMESPACE(octave)