466 lines
10 KiB
C++
466 lines
10 KiB
C++
/*
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Copyright (C) 2001-2006 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <cerrno>
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#include <cstdlib>
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#include <signal.h>
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#include <unistd.h>
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#include <sigc++/bind.h>
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#include <gtkmm/settings.h>
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#include <pbd/error.h>
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#include <pbd/textreceiver.h>
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#include <pbd/failed_constructor.h>
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#include <pbd/pthread_utils.h>
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#include <jack/jack.h>
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#include <ardour/version.h>
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#include <ardour/ardour.h>
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#include <ardour/audioengine.h>
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#include <gtkmm/main.h>
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#include <gtkmm2ext/popup.h>
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#include <gtkmm2ext/utils.h>
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#include "version.h"
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#include "ardour_ui.h"
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#include "opts.h"
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#include "i18n.h"
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using namespace Gtk;
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using namespace GTK_ARDOUR;
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using namespace ARDOUR;
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using namespace PBD;
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using namespace sigc;
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TextReceiver text_receiver ("ardour");
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extern int curvetest (string);
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static ARDOUR_UI *ui = 0;
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static void
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shutdown (int status)
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{
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char* msg;
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if (status) {
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msg = _("ardour is killing itself for a clean exit\n");
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write (1, msg, strlen (msg));
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/* drastic, but perhaps necessary */
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kill (-getpgrp(), SIGKILL);
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/*NOTREACHED*/
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} else {
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if (ui) {
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msg = _("stopping user interface\n");
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write (1, msg, strlen (msg));
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ui->kill();
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}
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pthread_cancel_all ();
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}
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exit (status);
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}
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static void
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handler (int sig)
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{
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char buf[64];
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int n;
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/* XXX its doubtful that snprintf() is async-safe */
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n = snprintf (buf, sizeof(buf), _("%d(%d): received signal %d\n"), getpid(), (int) pthread_self(), sig);
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write (1, buf, n);
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shutdown (1);
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}
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static void *
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signal_thread (void *arg)
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{
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int sig;
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sigset_t blocked;
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PBD::ThreadCreated (pthread_self(), X_("Signal"));
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pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
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/* find out what's blocked right now */
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//sigprocmask (SIG_SETMASK, 0, &blocked);
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if (pthread_sigmask (SIG_SETMASK, 0, &blocked)) {
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cerr << "getting blocked signals failed\n";
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}
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/* wait for any of the currently blocked signals.
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According to the man page found in linux 2.6 and 2.4, sigwait()
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never returns an error. This is incorrect. Checking the man
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pages for some other *nix systems makes it clear that
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sigwait() can return several error codes, one of which
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is EINTR. This happens if the thread receives a signal
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which is not in the blocked set.
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We do not expect that to happen, and if it did we should generally
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exit as planned. However, under 2.6, the ptrace facility used
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by gdb seems to also cause sigwait() to return with EINTR
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but with a signal that sigwait cannot understand. As a result,
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"sig" is set to zero, an impossible signal number.
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Handling the EINTR code makes it possible to debug
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ardour on a 2.6 kernel.
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*/
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int swerr;
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again:
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if ((swerr = sigwait (&blocked, &sig))) {
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if (swerr == EINTR) {
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goto again;
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} else {
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cerr << "sigwait failed with " << swerr << endl;
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}
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}
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cerr << "Signal " << sig << " received\n";
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if (sig != SIGSEGV) {
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/* unblock signals so we can see them during shutdown.
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this will help prod developers not to lose sight
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of bugs that cause segfaults etc. during shutdown.
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*/
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sigprocmask (SIG_UNBLOCK, &blocked, 0);
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}
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shutdown (1);
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/*NOTREACHED*/
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return 0;
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}
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int
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catch_signals (void)
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{
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struct sigaction action;
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pthread_t signal_thread_id;
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sigset_t signals;
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// if (setpgid (0,0)) {
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if (setsid ()) {
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warning << string_compose (_("cannot become new process group leader (%1)"),
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strerror (errno))
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<< endmsg;
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}
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sigemptyset (&signals);
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sigaddset(&signals, SIGHUP);
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sigaddset(&signals, SIGINT);
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sigaddset(&signals, SIGQUIT);
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sigaddset(&signals, SIGPIPE);
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sigaddset(&signals, SIGTERM);
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sigaddset(&signals, SIGUSR1);
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sigaddset(&signals, SIGUSR2);
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/* install a handler because otherwise
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pthreads behaviour is undefined when we enter
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sigwait.
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*/
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action.sa_handler = handler;
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action.sa_mask = signals;
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action.sa_flags = SA_RESTART|SA_RESETHAND;
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for (int i = 1; i < 32; i++) {
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if (sigismember (&signals, i)) {
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if (sigaction (i, &action, 0)) {
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cerr << string_compose (_("cannot setup signal handling for %1"), i) << endl;
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return -1;
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}
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}
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}
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/* this sets the signal mask for this and all
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subsequent threads that do not reset it.
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*/
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if (pthread_sigmask (SIG_SETMASK, &signals, 0)) {
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cerr << string_compose (_("cannot set default signal mask (%1)"), strerror (errno)) << endl;
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return -1;
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}
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/* start a thread to wait for signals */
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if (pthread_create_and_store ("signal", &signal_thread_id, 0, signal_thread, 0)) {
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cerr << "cannot create signal catching thread" << endl;
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return -1;
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}
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pthread_detach (signal_thread_id);
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return 0;
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}
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string
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which_ui_rcfile ()
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{
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string rcfile;
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char* env;
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if ((env = getenv ("ARDOUR2_UI_RC")) != 0 && strlen (env)) {
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rcfile = env;
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} else {
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rcfile = "ardour2_ui.rc";
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}
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rcfile = find_config_file (rcfile);
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if (rcfile.empty()) {
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warning << _("Without a UI style file, ardour will look strange.\n Please set ARDOUR2_UI_RC to point to a valid UI style file") << endmsg;
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} else {
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cerr << "Loading ui configuration file " << rcfile << endl;
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}
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return rcfile;
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}
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gint
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show_ui_callback (void *arg)
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{
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ARDOUR_UI * ui = (ARDOUR_UI *) arg;
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ui->hide_splash();
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ui->show ();
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return FALSE;
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}
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void
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gui_jack_error ()
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{
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MessageDialog win (_("Ardour could not connect to JACK."),
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false,
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Gtk::MESSAGE_INFO,
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(Gtk::ButtonsType)(Gtk::BUTTONS_NONE));
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win.set_secondary_text(_("There are several possible reasons:\n\
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\n\
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1) JACK is not running.\n\
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2) JACK is running as another user, perhaps root.\n\
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3) There is already another client called \"ardour\".\n\
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\n\
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Please consider the possibilities, and perhaps (re)start JACK."));
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win.add_button (Stock::QUIT, RESPONSE_CLOSE);
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win.set_default_response (RESPONSE_CLOSE);
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win.show_all ();
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win.set_position (Gtk::WIN_POS_CENTER);
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if (!no_splash) {
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ui->hide_splash ();
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}
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/* we just don't care about the result, but we want to block */
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win.run ();
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}
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static bool
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maybe_load_session ()
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{
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/* If no session name is given: we're not loading a session yet, nor creating a new one */
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if (!session_name.length()) {
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ui->hide_splash ();
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if (!Config->get_no_new_session_dialog()) {
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ui->new_session (true);
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}
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return true;
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}
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/* Load session or start the new session dialog */
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string name, path;
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bool isnew;
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if (Session::find_session (session_name, path, name, isnew)) {
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error << string_compose(_("could not load command line session \"%1\""), session_name) << endmsg;
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return false;
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}
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if (!new_session) {
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/* Loading a session, but the session doesn't exist */
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if (isnew) {
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error << string_compose (_("\n\nNo session named \"%1\" exists.\n\
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To create it from the command line, start ardour as \"ardour --new %1"), path) << endmsg;
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return false;
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}
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ui->load_session (path, name);
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} else {
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/* TODO: This bit of code doesn't work properly yet
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Glib::signal_idle().connect (bind (mem_fun (*ui, &ARDOUR_UI::cmdline_new_session), path));
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ui->set_will_create_new_session_automatically (true); */
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/* Show the NSD */
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ui->hide_splash ();
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if (!Config->get_no_new_session_dialog()) {
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ui->new_session (true);
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}
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}
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return true;
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}
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#ifdef VST_SUPPORT
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/* this is called from the entry point of a wine-compiled
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executable that is linked against gtk2_ardour built
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as a shared library.
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*/
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extern "C" {
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int ardour_main (int argc, char *argv[])
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#else
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int main (int argc, char *argv[])
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#endif
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{
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ARDOUR::AudioEngine *engine;
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vector<Glib::ustring> null_file_list;
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gtk_set_locale ();
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(void) bindtextdomain (PACKAGE, LOCALEDIR);
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(void) textdomain (PACKAGE);
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pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
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// catch_signals ();
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text_receiver.listen_to (error);
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text_receiver.listen_to (info);
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text_receiver.listen_to (fatal);
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text_receiver.listen_to (warning);
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if (parse_opts (argc, argv)) {
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exit (1);
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}
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if (curvetest_file) {
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return curvetest (curvetest_file);
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}
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cout << _("Ardour/GTK ")
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<< VERSIONSTRING
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<< _("\n (built using ")
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<< gtk_ardour_major_version << '.'
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<< gtk_ardour_minor_version << '.'
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<< gtk_ardour_micro_version
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<< _(" with libardour ")
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<< libardour_major_version << '.'
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<< libardour_minor_version << '.'
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<< libardour_micro_version
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#ifdef __GNUC__
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<< _(" and GCC version ") << __VERSION__
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#endif
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<< ')'
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<< endl;
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if (just_version) {
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exit (0);
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}
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if (no_splash) {
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cerr << _("Copyright (C) 1999-2006 Paul Davis") << endl
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<< _("Some portions Copyright (C) Steve Harris, Ari Johnson, Brett Viren, Joel Baker") << endl
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<< endl
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<< _("Ardour comes with ABSOLUTELY NO WARRANTY") << endl
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<< _("not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.") << endl
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<< _("This is free software, and you are welcome to redistribute it ") << endl
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<< _("under certain conditions; see the source for copying conditions.")
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<< endl;
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}
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// needs a better home.
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Glib::thread_init();
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try {
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ui = new ARDOUR_UI (&argc, &argv, which_ui_rcfile());
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} catch (failed_constructor& err) {
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error << _("could not create ARDOUR GUI") << endmsg;
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exit (1);
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}
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if (!no_splash) {
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ui->show_splash ();
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if (session_name.length()) {
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g_timeout_add (4000, show_ui_callback, ui);
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}
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}
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try {
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engine = new ARDOUR::AudioEngine (jack_client_name);
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} catch (AudioEngine::NoBackendAvailable& err) {
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gui_jack_error ();
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error << string_compose (_("Could not connect to JACK server as \"%1\""), jack_client_name) << endmsg;
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return -1;
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}
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try {
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ARDOUR::init (use_vst, try_hw_optimization);
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ui->set_engine (*engine);
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} catch (failed_constructor& err) {
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error << _("could not initialize Ardour.") << endmsg;
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return -1;
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}
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if (maybe_load_session ()) {
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ui->run (text_receiver);
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ui = 0;
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}
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delete engine;
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ARDOUR::cleanup ();
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shutdown (0);
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return 0;
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}
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#ifdef VST_SUPPORT
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} // end of extern C block
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#endif
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