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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/** @file
* X11 Guest client - seamless mode, missing proper description while using the
* potentially confusing word 'host'.
*/
/*
* Copyright (C) 2006-2011 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
/*****************************************************************************
* Header files *
*****************************************************************************/
#include <VBox/log.h>
#include <VBox/VMMDev.h>
#include <VBox/VBoxGuestLib.h>
#include <iprt/err.h>
#include "seamless-host.h"
/**
* Start the service.
* @returns iprt status value
*/
int VBoxGuestSeamlessHost::start(void)
{
int rc = VERR_NOT_SUPPORTED;
LogRelFlowFunc(("\n"));
if (mRunning) /* Assertion */
{
LogRel(("VBoxClient: seamless service started twice!\n"));
return VERR_INTERNAL_ERROR;
}
rc = VbglR3CtlFilterMask(VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST, 0);
if (RT_FAILURE(rc))
{
LogRel(("VBoxClient (seamless): failed to set the guest IRQ filter mask, rc=%Rrc\n", rc));
}
rc = VbglR3SeamlessSetCap(true);
if (RT_SUCCESS(rc))
{
LogRel(("VBoxClient: enabled seamless capability on host.\n"));
rc = mThread.start();
if (RT_SUCCESS(rc))
{
mRunning = true;
}
else
{
LogRel(("VBoxClient: failed to start seamless event thread, rc=%Rrc. Disabled seamless capability on host again.\n", rc));
VbglR3SeamlessSetCap(false);
}
}
if (RT_FAILURE(rc))
{
LogRel(("VBoxClient (seamless): failed to enable seamless capability on host, rc=%Rrc\n", rc));
}
LogRelFlowFunc(("returning %Rrc\n", rc));
return rc;
}
/** Stops the service. */
void VBoxGuestSeamlessHost::stop(RTMSINTERVAL cMillies /* = RT_INDEFINITE_WAIT */)
{
LogRelFlowFunc(("returning\n"));
if (!mRunning) /* Assertion */
{
LogRel(("VBoxClient: tried to stop seamless service which is not running!\n"));
return;
}
mThread.stop(cMillies, 0);
VbglR3CtlFilterMask(0, VMMDEV_EVENT_SEAMLESS_MODE_CHANGE_REQUEST);
VbglR3SeamlessSetCap(false);
mRunning = false;
LogRelFlowFunc(("returning\n"));
}
/**
* Waits for a seamless state change events from the host and dispatch it.
*
* @returns IRPT return code.
*/
int VBoxGuestSeamlessHost::nextEvent(void)
{
VMMDevSeamlessMode newMode = VMMDev_Seamless_Disabled;
LogRelFlowFunc(("\n"));
int rc = VbglR3SeamlessWaitEvent(&newMode);
if (RT_SUCCESS(rc))
{
switch(newMode)
{
case VMMDev_Seamless_Visible_Region:
/* A simplified seamless mode, obtained by making the host VM window borderless and
making the guest desktop transparent. */
#ifdef DEBUG
LogRelFunc(("VMMDev_Seamless_Visible_Region request received (VBoxClient).\n"));
#endif
mState = ENABLE;
mObserver->notify();
break;
case VMMDev_Seamless_Host_Window:
/* One host window represents one guest window. Not yet implemented. */
LogRelFunc(("Warning: VMMDev_Seamless_Host_Window request received (VBoxClient).\n"));
/* fall through to default */
default:
LogRelFunc(("Warning: unsupported VMMDev_Seamless request %d received (VBoxClient).\n", newMode));
/* fall through to case VMMDev_Seamless_Disabled */
case VMMDev_Seamless_Disabled:
#ifdef DEBUG
LogRelFunc(("VMMDev_Seamless_Disabled set (VBoxClient).\n"));
#endif
mState = DISABLE;
mObserver->notify();
}
}
else
{
LogRelFunc(("VbglR3SeamlessWaitEvent returned %Rrc (VBoxClient)\n", rc));
}
LogRelFlowFunc(("returning %Rrc\n", rc));
return rc;
}
/**
* Update the set of visible rectangles in the host.
*/
void VBoxGuestSeamlessHost::updateRects(RTRECT *pRects, size_t cRects)
{
LogRelFlowFunc(("\n"));
if (cRects && !pRects) /* Assertion */
{
LogRelThisFunc(("ERROR: called with null pointer!\n"));
return;
}
VbglR3SeamlessSendRects(cRects, pRects);
LogRelFlowFunc(("returning\n"));
}
/**
* The actual thread function.
*
* @returns iprt status code as thread return value
* @param pParent the VBoxGuestThread running this thread function
*/
int VBoxGuestSeamlessHostThread::threadFunction(VBoxGuestThread *pThread)
{
LogRelFlowFunc(("\n"));
if (0 != mHost)
{
mThread = pThread;
while (!mThread->isStopping())
{
if (RT_FAILURE(mHost->nextEvent()) && !mThread->isStopping())
{
/* If we are not stopping, sleep for a bit to avoid using up too
much CPU while retrying. */
mThread->yield();
}
}
}
LogRelFlowFunc(("returning VINF_SUCCESS\n"));
return VINF_SUCCESS;
}
/**
* Send a signal to the thread function that it should exit
*/
void VBoxGuestSeamlessHostThread::stop(void)
{
LogRelFlowFunc(("\n"));
if (0 != mHost)
{
/**
* @todo is this reasonable? If the thread is in the event loop then the cancelEvent()
* will cause it to exit. If it enters or exits the event loop it will also
* notice that we wish it to exit. And if it is somewhere in-between, the
* yield() should give it time to get to one of places mentioned above.
*/
for (int i = 0; (i < 5) && mThread->isRunning(); ++i)
{
mHost->cancelEvent();
mThread->yield();
}
}
LogRelFlowFunc(("returning\n"));
}
|
