1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
Copyright (C) 2000-2007 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cstring>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <cerrno>
#include <cstring>
#include "pbd/base_ui.h"
#include "pbd/error.h"
#include "pbd/compose.h"
#include "pbd/failed_constructor.h"
#include "i18n.h"
using namespace std;
using namespace PBD;
using namespace Glib;
uint64_t BaseUI::rt_bit = 1;
BaseUI::RequestType BaseUI::CallSlot = BaseUI::new_request_type();
BaseUI::BaseUI (const string& str)
: run_loop_thread (0)
, _name (str)
{
base_ui_instance = this;
request_channel.ios()->connect (sigc::mem_fun (*this, &BaseUI::request_handler));
/* derived class must set _ok */
}
BaseUI::~BaseUI()
{
}
BaseUI::RequestType
BaseUI::new_request_type ()
{
RequestType rt;
/* XXX catch out-of-range */
rt = RequestType (rt_bit);
rt_bit <<= 1;
return rt;
}
void
BaseUI::main_thread ()
{
thread_init ();
_main_loop->run ();
}
void
BaseUI::run ()
{
/* to be called by UI's that need/want their own distinct, self-created event loop thread.
Derived classes should have set up a handler for IO on request_channel.ios()
*/
_main_loop = MainLoop::create (MainContext::create());
request_channel.ios()->attach (_main_loop->get_context());
run_loop_thread = Thread::create (mem_fun (*this, &BaseUI::main_thread), true);
}
void
BaseUI::quit ()
{
_main_loop->quit ();
run_loop_thread->join ();
}
bool
BaseUI::request_handler (Glib::IOCondition ioc)
{
/* check the transport request pipe */
if (ioc & ~IO_IN) {
_main_loop->quit ();
}
if (ioc & IO_IN) {
request_channel.drain ();
/* there may been an error. we'd rather handle requests first,
and then get IO_HUP or IO_ERR on the next loop.
*/
/* handle requests */
handle_ui_requests ();
}
return true;
}
|
