130 lines
2.8 KiB
C++
130 lines
2.8 KiB
C++
/*
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Copyright (C) 2000-2007 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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*/
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#include <cstring>
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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <cerrno>
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#include <cstring>
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#include "pbd/base_ui.h"
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#include "pbd/debug.h"
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#include "pbd/pthread_utils.h"
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#include "pbd/error.h"
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#include "pbd/compose.h"
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#include "pbd/failed_constructor.h"
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#include "i18n.h"
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using namespace std;
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using namespace PBD;
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using namespace Glib;
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uint64_t BaseUI::rt_bit = 1;
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BaseUI::RequestType BaseUI::CallSlot = BaseUI::new_request_type();
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BaseUI::RequestType BaseUI::Quit = BaseUI::new_request_type();
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BaseUI::BaseUI (const string& str)
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: request_channel (true)
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, run_loop_thread (0)
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, _name (str)
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{
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base_ui_instance = this;
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request_channel.ios()->connect (sigc::mem_fun (*this, &BaseUI::request_handler));
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/* derived class must set _ok */
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}
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BaseUI::~BaseUI()
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{
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}
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BaseUI::RequestType
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BaseUI::new_request_type ()
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{
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RequestType rt;
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/* XXX catch out-of-range */
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rt = RequestType (rt_bit);
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rt_bit <<= 1;
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return rt;
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}
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void
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BaseUI::main_thread ()
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{
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DEBUG_TRACE (DEBUG::EventLoop, string_compose ("%1: event loop running in thread %2\n", name(), pthread_self()));
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set_event_loop_for_thread (this);
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thread_init ();
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_main_loop->run ();
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}
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void
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BaseUI::run ()
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{
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/* to be called by UI's that need/want their own distinct, self-created event loop thread.
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*/
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_main_loop = MainLoop::create (MainContext::create());
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request_channel.ios()->attach (_main_loop->get_context());
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/* glibmm hack - drop the refptr to the IOSource now before it can hurt */
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request_channel.drop_ios ();
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run_loop_thread = Thread::create (mem_fun (*this, &BaseUI::main_thread), true);
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}
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void
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BaseUI::quit ()
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{
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if (_main_loop->is_running()) {
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_main_loop->quit ();
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run_loop_thread->join ();
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}
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}
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bool
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BaseUI::request_handler (Glib::IOCondition ioc)
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{
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/* check the request pipe */
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if (ioc & ~IO_IN) {
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_main_loop->quit ();
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}
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if (ioc & IO_IN) {
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request_channel.drain ();
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/* there may been an error. we'd rather handle requests first,
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and then get IO_HUP or IO_ERR on the next loop.
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*/
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/* handle requests */
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handle_ui_requests ();
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}
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return true;
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}
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