keep the PID file locked for the lifetime of the process
[qemu.git] / ui / vnc-jobs.h
1 /*
2 * QEMU VNC display driver
3 *
4 * From libvncserver/rfb/rfbproto.h
5 * Copyright (C) 2005 Rohit Kumar, Johannes E. Schindelin
6 * Copyright (C) 2000-2002 Constantin Kaplinsky. All Rights Reserved.
7 * Copyright (C) 2000 Tridia Corporation. All Rights Reserved.
8 * Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
9 *
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 * THE SOFTWARE.
28 */
29
30 #ifndef VNC_JOBS_H
31 #define VNC_JOBS_H
32
33 /* Jobs */
34 VncJob *vnc_job_new(VncState *vs);
35 int vnc_job_add_rect(VncJob *job, int x, int y, int w, int h);
36 void vnc_job_push(VncJob *job);
37 bool vnc_has_job(VncState *vs);
38 void vnc_jobs_clear(VncState *vs);
39 void vnc_jobs_join(VncState *vs);
40
41 #ifdef CONFIG_VNC_THREAD
42
43 void vnc_start_worker_thread(void);
44 bool vnc_worker_thread_running(void);
45 void vnc_stop_worker_thread(void);
46
47 #endif /* CONFIG_VNC_THREAD */
48
49 /* Locks */
50 static inline int vnc_trylock_display(VncDisplay *vd)
51 {
52 #ifdef CONFIG_VNC_THREAD
53 return qemu_mutex_trylock(&vd->mutex);
54 #else
55 return 0;
56 #endif
57 }
58
59 static inline void vnc_lock_display(VncDisplay *vd)
60 {
61 #ifdef CONFIG_VNC_THREAD
62 qemu_mutex_lock(&vd->mutex);
63 #endif
64 }
65
66 static inline void vnc_unlock_display(VncDisplay *vd)
67 {
68 #ifdef CONFIG_VNC_THREAD
69 qemu_mutex_unlock(&vd->mutex);
70 #endif
71 }
72
73 static inline void vnc_lock_output(VncState *vs)
74 {
75 #ifdef CONFIG_VNC_THREAD
76 qemu_mutex_lock(&vs->output_mutex);
77 #endif
78 }
79
80 static inline void vnc_unlock_output(VncState *vs)
81 {
82 #ifdef CONFIG_VNC_THREAD
83 qemu_mutex_unlock(&vs->output_mutex);
84 #endif
85 }
86
87 #endif /* VNC_JOBS_H */