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view libovr/Src/linux/OVR_Linux_DeviceManager.h @ 29:9a973ef0e2a3

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fixed the performance issue under MacOSX by replacing glutSolidTeapot (which uses glEvalMesh) with my own teapot generator.
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 27 Oct 2013 06:31:18 +0200
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1 /************************************************************************************
2
3 Filename : OVR_Linux_DeviceManager.h
4 Content : Linux-specific DeviceManager header.
5 Created :
6 Authors :
7
8 Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved.
9
10 Use of this software is subject to the terms of the Oculus license
11 agreement provided at the time of installation or download, or which
12 otherwise accompanies this software in either electronic or hard copy form.
13
14 *************************************************************************************/
15
16 #ifndef OVR_Linux_DeviceManager_h
17 #define OVR_Linux_DeviceManager_h
18
19 #include "OVR_DeviceImpl.h"
20
21 #include <unistd.h>
22 #include <sys/poll.h>
23
24
25 namespace OVR { namespace Linux {
26
27 class DeviceManagerThread;
28
29 //-------------------------------------------------------------------------------------
30 // ***** Linux DeviceManager
31
32 class DeviceManager : public DeviceManagerImpl
33 {
34 public:
35 DeviceManager();
36 ~DeviceManager();
37
38 // Initialize/Shutdowncreate and shutdown manger thread.
39 virtual bool Initialize(DeviceBase* parent);
40 virtual void Shutdown();
41
42 virtual ThreadCommandQueue* GetThreadQueue();
43 virtual ThreadId GetThreadId() const;
44
45 virtual DeviceEnumerator<> EnumerateDevicesEx(const DeviceEnumerationArgs& args);
46
47 virtual bool GetDeviceInfo(DeviceInfo* info) const;
48
49 Ptr<DeviceManagerThread> pThread;
50 };
51
52 //-------------------------------------------------------------------------------------
53 // ***** Device Manager Background Thread
54
55 class DeviceManagerThread : public Thread, public ThreadCommandQueue
56 {
57 friend class DeviceManager;
58 enum { ThreadStackSize = 64 * 1024 };
59 public:
60 DeviceManagerThread();
61 ~DeviceManagerThread();
62
63 virtual int Run();
64
65 // ThreadCommandQueue notifications for CommandEvent handling.
66 virtual void OnPushNonEmpty_Locked() { write(CommandFd[1], this, 1); }
67 virtual void OnPopEmpty_Locked() { }
68
69 class Notifier
70 {
71 public:
72 // Called when I/O is received
73 virtual void OnEvent(int i, int fd) = 0;
74
75 // Called when timing ticks are updated.
76 // Returns the largest number of microseconds this function can
77 // wait till next call.
78 virtual UInt64 OnTicks(UInt64 ticksMks)
79 {
80 OVR_UNUSED1(ticksMks);
81 return Timer::MksPerSecond * 1000;
82 }
83 };
84
85 // Add I/O notifier
86 bool AddSelectFd(Notifier* notify, int fd);
87 bool RemoveSelectFd(Notifier* notify, int fd);
88
89 // Add notifier that will be called at regular intervals.
90 bool AddTicksNotifier(Notifier* notify);
91 bool RemoveTicksNotifier(Notifier* notify);
92
93 private:
94
95 bool threadInitialized() { return CommandFd[0] != 0; }
96
97 // pipe used to signal commands
98 int CommandFd[2];
99
100 Array<struct pollfd> PollFds;
101 Array<Notifier*> FdNotifiers;
102
103 Event StartupEvent;
104
105 // Ticks notifiers - used for time-dependent events such as keep-alive.
106 Array<Notifier*> TicksNotifiers;
107 };
108
109 }} // namespace Linux::OVR
110
111 #endif // OVR_Linux_DeviceManager_h