diff --git a/gtk2_ardour/main.cc b/gtk2_ardour/main.cc index 5038c7671b..a3ea0ca4b4 100644 --- a/gtk2_ardour/main.cc +++ b/gtk2_ardour/main.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2001-2006 Paul Davis + Copyright (C) 2001-2007 Paul Davis This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,13 +17,7 @@ */ -#include -#include -#include -#include #include -#include -#include #include #include @@ -63,172 +57,6 @@ extern int curvetest (string); static ARDOUR_UI *ui = 0; -static void -shutdown (int status) -{ - char* msg; - - if (status) { - - msg = _("ardour is killing itself for a clean exit\n"); - write (1, msg, strlen (msg)); - /* drastic, but perhaps necessary */ - kill (-getpgrp(), SIGKILL); - /*NOTREACHED*/ - - } else { - - if (ui) { - ui->kill(); - } - - pthread_cancel_all (); - } - - exit (status); -} - - -static void -handler (int sig) -{ - char buf[64]; - int n; - - /* XXX its doubtful that snprintf() is async-safe */ - n = snprintf (buf, sizeof(buf), _("%d(%d): received signal %d\n"), getpid(), (int) pthread_self(), sig); - write (1, buf, n); - - shutdown (1); -} - -static void * -signal_thread (void *arg) -{ - int sig; - sigset_t blocked; - - PBD::ThreadCreated (pthread_self(), X_("Signal")); - - pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0); - - /* find out what's blocked right now */ - - //sigprocmask (SIG_SETMASK, 0, &blocked); - if (pthread_sigmask (SIG_SETMASK, 0, &blocked)) { - cerr << "getting blocked signals failed\n"; - } - - /* wait for any of the currently blocked signals. - - According to the man page found in linux 2.6 and 2.4, sigwait() - never returns an error. This is incorrect. Checking the man - pages for some other *nix systems makes it clear that - sigwait() can return several error codes, one of which - is EINTR. This happens if the thread receives a signal - which is not in the blocked set. - - We do not expect that to happen, and if it did we should generally - exit as planned. However, under 2.6, the ptrace facility used - by gdb seems to also cause sigwait() to return with EINTR - but with a signal that sigwait cannot understand. As a result, - "sig" is set to zero, an impossible signal number. - - Handling the EINTR code makes it possible to debug - ardour on a 2.6 kernel. - - */ - - int swerr; - - again: - if ((swerr = sigwait (&blocked, &sig))) { - if (swerr == EINTR) { - goto again; - } else { - cerr << "sigwait failed with " << swerr << endl; - } - } - - cerr << "Signal " << sig << " received\n"; - - if (sig != SIGSEGV) { - - /* unblock signals so we can see them during shutdown. - this will help prod developers not to lose sight - of bugs that cause segfaults etc. during shutdown. - */ - - sigprocmask (SIG_UNBLOCK, &blocked, 0); - } - - shutdown (1); - /*NOTREACHED*/ - return 0; -} - -int -catch_signals (void) -{ - struct sigaction action; - pthread_t signal_thread_id; - sigset_t signals; - -// if (setpgid (0,0)) { - if (setsid ()) { - warning << string_compose (_("cannot become new process group leader (%1)"), - strerror (errno)) - << endmsg; - } - - sigemptyset (&signals); - sigaddset(&signals, SIGHUP); - sigaddset(&signals, SIGINT); - sigaddset(&signals, SIGQUIT); - sigaddset(&signals, SIGPIPE); - sigaddset(&signals, SIGTERM); - sigaddset(&signals, SIGUSR1); - sigaddset(&signals, SIGUSR2); - - - /* install a handler because otherwise - pthreads behaviour is undefined when we enter - sigwait. - */ - - action.sa_handler = handler; - action.sa_mask = signals; - action.sa_flags = SA_RESTART|SA_RESETHAND; - - for (int i = 1; i < 32; i++) { - if (sigismember (&signals, i)) { - if (sigaction (i, &action, 0)) { - cerr << string_compose (_("cannot setup signal handling for %1"), i) << endl; - return -1; - } - } - } - - /* this sets the signal mask for this and all - subsequent threads that do not reset it. - */ - - if (pthread_sigmask (SIG_SETMASK, &signals, 0)) { - cerr << string_compose (_("cannot set default signal mask (%1)"), strerror (errno)) << endl; - return -1; - } - - /* start a thread to wait for signals */ - - if (pthread_create_and_store ("signal", &signal_thread_id, 0, signal_thread, 0)) { - cerr << "cannot create signal catching thread" << endl; - return -1; - } - - pthread_detach (signal_thread_id); - return 0; -} - string which_ui_rcfile () { @@ -405,7 +233,7 @@ int main (int argc, char *argv[]) } if (no_splash) { - cerr << _("Copyright (C) 1999-2006 Paul Davis") << endl + cerr << _("Copyright (C) 1999-2007 Paul Davis") << endl << _("Some portions Copyright (C) Steve Harris, Ari Johnson, Brett Viren, Joel Baker") << endl << endl << _("Ardour comes with ABSOLUTELY NO WARRANTY") << endl @@ -466,7 +294,14 @@ int main (int argc, char *argv[]) delete engine; ARDOUR::cleanup (); - shutdown (0); + + if (ui) { + ui->kill(); + } + + pthread_cancel_all (); + + exit (0); return 0; }