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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/* window.cc: hidden windows for signals/itimer support
Copyright 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
Written by Sergey Okhapkin <sos@prospect.com.ru>
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
#include <sys/time.h>
#include <stdlib.h>
#include <signal.h>
#include <limits.h>
#include <wingdi.h>
#include <winuser.h>
#define USE_SYS_TYPES_FD_SET
#include <winsock2.h>
#include <unistd.h>
#include "cygerrno.h"
#include "perprocess.h"
#include "security.h"
#include "thread.h"
#include "cygtls.h"
#include "sync.h"
#include "wininfo.h"
wininfo NO_COPY winmsg;
muto NO_COPY wininfo::_lock;
int __stdcall
wininfo::process (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
#ifndef NOSTRACE
strace.wm (uMsg, wParam, lParam);
#endif
switch (uMsg)
{
case WM_PAINT:
return 0;
case WM_DESTROY:
PostQuitMessage (0);
return 0;
case WM_ASYNCIO:
if (WSAGETSELECTEVENT (lParam) == FD_OOB)
raise (SIGURG);
else
raise (SIGIO);
return 0;
default:
return DefWindowProc (hwnd, uMsg, wParam, lParam);
}
}
static LRESULT CALLBACK
process_window_events (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
return winmsg.process (hwnd, uMsg, wParam, lParam);
}
/* Handle windows events. Inherits ownership of the wininfo lock */
DWORD WINAPI
wininfo::winthread ()
{
MSG msg;
WNDCLASS wc;
static NO_COPY char classname[] = "CygwinWndClass";
_lock.grab ();
/* Register the window class for the main window. */
wc.style = 0;
wc.lpfnWndProc = (WNDPROC) process_window_events;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = user_data->hmodule;
wc.hIcon = NULL;
wc.hCursor = NULL;
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = classname;
if (!RegisterClass (&wc))
api_fatal ("cannot register window class, %E");
/* Create hidden window. */
hwnd = CreateWindow (classname, classname, WS_POPUP, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
(HWND) NULL, (HMENU) NULL, user_data->hmodule,
(LPVOID) NULL);
if (!hwnd)
api_fatal ("couldn't create window, %E");
release ();
while (GetMessage (&msg, hwnd, 0, 0) == TRUE)
DispatchMessage (&msg);
return 0;
}
static DWORD WINAPI
winthread (VOID *arg)
{
return ((wininfo *) arg)->winthread ();
}
wininfo::operator
HWND ()
{
if (hwnd)
return hwnd;
lock ();
if (!hwnd)
{
_lock.upforgrabs ();
cygthread *h = new cygthread (::winthread, 0, this, "win");
h->SetThreadPriority (THREAD_PRIORITY_HIGHEST);
h->zap_h ();
lock ();
}
release ();
return hwnd;
}
void
wininfo::lock ()
{
_lock.init ("wininfo_lock")->acquire ();
}
void
wininfo::release ()
{
_lock.release ();
}
|
