Mercurial > octave
view libgui/src/thread-manager.cc @ 23084:ef4d915df748
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Mon, 23 Jan 2017 14:27:48 -0500 |
parents | 3a2b891d0b33 e9a0469dedd9 |
children | 092078913d54 |
line wrap: on
line source
/* Copyright (C) 2013-2016 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/>. */ #if defined (HAVE_CONFIG_H) # include "config.h" #endif #if defined (OCTAVE_USE_WINDOWS_API) # include <windows.h> #else # include <pthread.h> #endif #include "signal-wrappers.h" #include "thread-manager.h" #if defined (OCTAVE_USE_WINDOWS_API) class windows_thread_manager : public octave_base_thread_manager { public: windows_thread_manager (void) : octave_base_thread_manager () { } void register_current_thread (void) { } void interrupt (void) { GenerateConsoleCtrlEvent (CTRL_C_EVENT, 0); } }; #else class pthread_thread_manager : public octave_base_thread_manager { public: pthread_thread_manager (void) : octave_base_thread_manager (), my_thread (), initialized (false) { } void register_current_thread (void) { my_thread = pthread_self (); initialized = true; } void interrupt (void) { if (initialized) { // Send SIGINT to all other processes in our process group. // This is needed to interrupt calls to system (), for example. // FIXME: What happens if some code inside a // {BEGIN,END}_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE block starts // additional threads and one of those happens to catch this signal? // Would the interrupt handler and the subsequent longjmp and exception // all be executed in the wrong thread? If so, is there any way to // prevent that from happening? int sigint; octave_get_sig_number ("SIGINT", &sigint); octave_kill_wrapper (0, sigint); } } private: pthread_t my_thread; bool initialized; }; #endif octave_thread_manager::octave_thread_manager (void) : rep (octave_thread_manager::create_rep ()) { } void octave_thread_manager::block_interrupt_signal (void) { octave_block_interrupt_signal (); } void octave_thread_manager::unblock_interrupt_signal (void) { octave_unblock_interrupt_signal (); } octave_base_thread_manager * octave_thread_manager::create_rep (void) { #if defined (OCTAVE_USE_WINDOWS_API) return new windows_thread_manager (); #else return new pthread_thread_manager (); #endif }