sighandlers.cc File Reference

#include <csignal>
#include <cstdlib>
#include <iostream>
#include <new>
#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"

Include dependency graph for sighandlers.cc:

Go to the source code of this file.

Functions
interrupt_handler	catch_interrupts (void)
static void	deadly_sig_handler (int sig)
OCTAVE_EXPORT octave_value_list	Fdebug_on_interrupt (const octave_value_list &args, int nargout)
static void	fpe_sig_handler (int)
OCTAVE_EXPORT octave_value_list	FSIG (const octave_value_list &args, int)
OCTAVE_EXPORT octave_value_list	Fsighup_dumps_octave_core (const octave_value_list &args, int nargout)
OCTAVE_EXPORT octave_value_list	Fsigquit_dumps_octave_core (const octave_value_list &args, int nargout)
OCTAVE_EXPORT octave_value_list	Fsigterm_dumps_octave_core (const octave_value_list &args, int nargout)
static void	generic_sig_handler (int sig)
interrupt_handler	ignore_interrupts (void)
void	install_signal_handlers (void)
static octave_scalar_map	make_sig_struct (void)
static void	my_friendly_exit (int sig, bool save_vars=true)
void	respond_to_pending_signals (void)
interrupt_handler	set_interrupt_handler (const volatile interrupt_handler &h, bool restart_syscalls)
static void	set_sig_struct_field (octave_scalar_map &m, const char *signame)
sig_handler *	set_signal_handler (const char *signame, sig_handler *handler, bool restart_syscalls)
sig_handler *	set_signal_handler (int sig, sig_handler *handler, bool restart_syscalls)

Variables
bool	can_interrupt = false
OCTAVE_NAMESPACE_BEGIN int	pipe_handler_error_count = 0
static bool *	signals_caught = nullptr
bool	Vdebug_on_interrupt = false
static bool	Vsighup_dumps_octave_core = true
static bool	Vsigquit_dumps_octave_core = true
static bool	Vsigterm_dumps_octave_core = true

Function Documentation

catch_interrupts()

interrupt_handler catch_interrupts

(

void

)

Definition at line 327 of file sighandlers.cc.

References interrupt_handler::brk_handler, generic_sig_handler(), interrupt_handler::int_handler, and set_signal_handler().

Referenced by interpreter::initialize(), install_signal_handlers(), and interpreter::recover_from_exception().

deadly_sig_handler()

static void deadly_sig_handler ( int  sig )

static

Definition at line 307 of file sighandlers.cc.

References octave_raise_wrapper(), octave_set_default_signal_handler(), and octave_strsignal_wrapper().

Referenced by install_signal_handlers().

Fdebug_on_interrupt()

OCTAVE_EXPORT octave_value_list Fdebug_on_interrupt	(	const octave_value_list &	args,
		int	nargout
	)

Definition at line 532 of file sighandlers.cc.

References set_internal_variable(), and Vdebug_on_interrupt.

fpe_sig_handler()

static void fpe_sig_handler ( int  )

static

Definition at line 319 of file sighandlers.cc.

Referenced by install_signal_handlers().

FSIG()

OCTAVE_EXPORT octave_value_list FSIG	(	const octave_value_list &	args,
		int
	)

Definition at line 499 of file sighandlers.cc.

References make_sig_struct(), ovl(), and print_usage().

Fsighup_dumps_octave_core()

OCTAVE_EXPORT octave_value_list Fsighup_dumps_octave_core	(	const octave_value_list &	args,
		int	nargout
	)

Definition at line 562 of file sighandlers.cc.

References set_internal_variable(), and Vsighup_dumps_octave_core.

Fsigquit_dumps_octave_core()

OCTAVE_EXPORT octave_value_list Fsigquit_dumps_octave_core	(	const octave_value_list &	args,
		int	nargout
	)

Definition at line 593 of file sighandlers.cc.

References set_internal_variable(), and Vsigquit_dumps_octave_core.

Fsigterm_dumps_octave_core()

OCTAVE_EXPORT octave_value_list Fsigterm_dumps_octave_core	(	const octave_value_list &	args,
		int	nargout
	)

Definition at line 624 of file sighandlers.cc.

References set_internal_variable(), and Vsigterm_dumps_octave_core.

generic_sig_handler()

static void generic_sig_handler ( int  sig )

static

Definition at line 274 of file sighandlers.cc.

References can_interrupt, octave_get_sig_number(), octave_initialized, octave_interrupt_state, octave_signal_caught, and signals_caught.

Referenced by catch_interrupts(), and install_signal_handlers().

ignore_interrupts()

interrupt_handler ignore_interrupts

(

void

)

Definition at line 338 of file sighandlers.cc.

References interrupt_handler::brk_handler, interrupt_handler::int_handler, and set_signal_handler().

Referenced by history_system::do_edit_history(), kbhit(), and respond_to_pending_signals().

install_signal_handlers()

void install_signal_handlers

(

void

)

Definition at line 366 of file sighandlers.cc.

References catch_interrupts(), deadly_sig_handler(), fpe_sig_handler(), generic_sig_handler(), octave_create_interrupt_watcher_thread(), octave_num_signals(), set_signal_handler(), and signals_caught.

make_sig_struct()

static octave_scalar_map make_sig_struct ( void  )

static

Definition at line 449 of file sighandlers.cc.

References set_sig_struct_field().

Referenced by FSIG().

my_friendly_exit()

static void my_friendly_exit ( int  sig, bool  save_vars = true  )

static

Definition at line 88 of file sighandlers.cc.

References octave::__get_load_save_system__(), load_save_system::dump_octave_core(), octave_strsignal_wrapper(), and sysdep_cleanup().

Referenced by respond_to_pending_signals().

respond_to_pending_signals()

void respond_to_pending_signals

(

void

)

Definition at line 111 of file sighandlers.cc.

References octave::__get_child_list__(), ignore_interrupts(), my_friendly_exit(), octave_block_child(), octave_get_sig_number(), octave_interrupt_state, octave_num_signals(), octave_strsignal_wrapper(), octave_unblock_child(), pipe_handler_error_count, set_interrupt_handler(), signals_caught, Vsighup_dumps_octave_core, Vsigquit_dumps_octave_core, and Vsigterm_dumps_octave_core.

Referenced by interpreter::initialize().

set_interrupt_handler()

interrupt_handler set_interrupt_handler	(	const volatile interrupt_handler &	h,
		bool	restart_syscalls
	)

Definition at line 349 of file sighandlers.cc.

References interrupt_handler::brk_handler, interrupt_handler::int_handler, and set_signal_handler().

Referenced by history_system::do_edit_history(), kbhit(), and respond_to_pending_signals().

set_sig_struct_field()

static void set_sig_struct_field ( octave_scalar_map &  m, const char *  signame  )

static

Definition at line 438 of file sighandlers.cc.

References octave_scalar_map::assign(), octave_get_sig_number(), and octave::math::signum().

Referenced by make_sig_struct().

set_signal_handler() [1/2]

sig_handler * set_signal_handler	(	const char *	signame,
		sig_handler *	handler,
		bool	restart_syscalls
	)

Definition at line 266 of file sighandlers.cc.

References octave_set_signal_handler_by_name().

set_signal_handler() [2/2]

sig_handler * set_signal_handler	(	int	sig,
		sig_handler *	handler,
		bool	restart_syscalls
	)

Definition at line 260 of file sighandlers.cc.

References octave_set_signal_handler_internal().

Referenced by catch_interrupts(), ignore_interrupts(), install_signal_handlers(), and set_interrupt_handler().

Variable Documentation

can_interrupt

bool can_interrupt = false

Definition at line 68 of file sighandlers.cc.

Referenced by generic_sig_handler(), interpreter::initialize(), and interpreter::recover_from_exception().

pipe_handler_error_count

OCTAVE_NAMESPACE_BEGIN int pipe_handler_error_count = 0

Definition at line 65 of file sighandlers.cc.

Referenced by respond_to_pending_signals().

signals_caught

bool* signals_caught = nullptr

static

Definition at line 85 of file sighandlers.cc.

Referenced by generic_sig_handler(), install_signal_handlers(), and respond_to_pending_signals().

Vdebug_on_interrupt

bool Vdebug_on_interrupt = false

Definition at line 71 of file sighandlers.cc.

Referenced by octave::bp_table::dbclear_all_signals(), octave::bp_table::dbstop_process_map_args(), Fdebug_on_interrupt(), octave::bp_table::parse_dbfunction_params(), octave::bp_table::process_id_list(), and octave::bp_table::stop_on_err_warn_status().

Vsighup_dumps_octave_core

bool Vsighup_dumps_octave_core = true

static

Definition at line 76 of file sighandlers.cc.

Referenced by Fsighup_dumps_octave_core(), and respond_to_pending_signals().

Vsigquit_dumps_octave_core

bool Vsigquit_dumps_octave_core = true

static

Definition at line 79 of file sighandlers.cc.

Referenced by Fsigquit_dumps_octave_core(), and respond_to_pending_signals().

Vsigterm_dumps_octave_core

bool Vsigterm_dumps_octave_core = true

static

Definition at line 82 of file sighandlers.cc.

Referenced by Fsigterm_dumps_octave_core(), and respond_to_pending_signals().