| 1 | /* $Id: os2timer.h,v 1.11 2001-10-03 13:47:58 sandervl Exp $ */
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| 2 |
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| 3 | #ifndef __OS2TIMER_H__
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| 4 | #define __OS2TIMER_H__
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| 5 | /*
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| 6 | * OS/2 Timer class
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| 7 | *
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| 8 | * Copyright 1998 Sander van Leeuwen (sandervl@xs4all.nl)
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| 9 | * Copyright 1999 Patrick Haller (phaller@gmx.net)
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| 10 | *
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| 11 | * Project Odin Software License can be found in LICENSE.TXT
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| 12 | *
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| 13 | */
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| 14 |
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| 15 | #ifdef _OS2WIN_H
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| 16 | #define HEV int
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| 17 | #define HTIMER int
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| 18 | #endif
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| 19 |
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| 20 |
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| 21 | /****************************************************************************
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| 22 | * Definitions *
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| 23 | ****************************************************************************/
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| 24 |
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| 25 | /* 2001-09-16 PH
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| 26 | with the new OS2KRNL's dating 2001-09-14 and later, there is
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| 27 | a special CLOCKSCALE feature added which allows for much finer
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| 28 | granularity of the OS/2 system timers up to a maximum resolution
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| 29 | of 2ms. This is supposed to be enough for most timing issues here.
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| 30 |
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| 31 | Note:
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| 32 | we need to add support for dynamic detection of this feature.
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| 33 | */
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| 34 | #define OS2TIMER_RESOLUTION_MINIMUM 2
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| 35 | #define OS2TIMER_RESOLUTION_MAXIMUM 0x7ffffffe
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| 36 |
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| 37 |
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| 38 | /****************************************************************************
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| 39 | * Structures *
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #if 0
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| 43 | typedef struct _MMTIMEREVENT
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| 44 | {
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| 45 | struct _MMTIMEREVENT* prev;
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| 46 | struct _MMTIMEREVENT* next;
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| 47 |
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| 48 | DWORD id; // event id
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| 49 | DWORD timeScheduled; // system time to fire event
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| 50 | DWORD timePeriod; // period if periodic event
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| 51 | TID tidCaller; // thread ID of caller thread
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| 52 | DWORD dwUser; // user supplied value
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| 53 | LPTIMERCALLBACK lpCallback; // address to call
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| 54 | DWORD dwFlags; // event flags
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| 55 | } MMTIMEREVENT, *PMMTIMEREVENT, *LPTIMEREVENT;
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| 56 | #endif
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| 57 |
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| 58 | /*
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| 59 | addEvent
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| 60 | removeEvent
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| 61 | rescheduleEvent
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| 62 | callbackCaller
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| 63 | */
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| 64 |
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| 65 |
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| 66 | /****************************************************************************
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| 67 | * Class: OS2TimerResolution *
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| 68 | ****************************************************************************/
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| 69 |
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| 70 | class OS2TimerResolution
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| 71 | {
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| 72 | public:
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| 73 | // public entries
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| 74 | static BOOL enterResolutionScope(int dwPeriod); // request timer resolution
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| 75 | static BOOL leaveResolutionScope(int dwPeriod); // release resolution request
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| 76 | static int queryCurrentResolution(); // query maximum resolution
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| 77 |
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| 78 | // public variables
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| 79 | int dwPeriod;
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| 80 |
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| 81 | protected:
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| 82 | // constructors and destructors
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| 83 | OS2TimerResolution(void);
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| 84 | OS2TimerResolution(int dwPeriod);
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| 85 | ~OS2TimerResolution();
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| 86 |
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| 87 | // simple linked list
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| 88 | static OS2TimerResolution* sTimerResolutions; // list of resolution scoped
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| 89 | OS2TimerResolution* next; // link to next entry
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| 90 | };
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| 91 |
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| 92 |
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| 93 | /****************************************************************************
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| 94 | * Class: OS2Timer *
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| 95 | ****************************************************************************/
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| 96 |
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| 97 | class OS2Timer
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| 98 | {
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| 99 | public:
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| 100 | OS2Timer();
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| 101 | ~OS2Timer();
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| 102 |
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| 103 | void TimerHandler();
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| 104 | BOOL StartTimer(int period, int resolution, LPTIMECALLBACK lptc,
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| 105 | int dwUser, int fuEvent);
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| 106 | void StopTimer();
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| 107 | void KillTimer();
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| 108 |
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| 109 |
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| 110 | DWORD getTimerID() { return timerID; };
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| 111 | void setTimerID(DWORD id) { timerID = id; };
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| 112 |
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| 113 | protected:
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| 114 |
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| 115 | private:
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| 116 | HEV TimerSem;
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| 117 | HTIMER TimerHandle;
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| 118 | HANDLE hTimerThread;
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| 119 | DWORD TimerThreadID;
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| 120 | LPTIMECALLBACK clientCallback;
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| 121 | DWORD userData;
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| 122 | DWORD dwFlags; // corresponds with fuEvent
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| 123 |
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| 124 | BOOL fFatal;
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| 125 | int TimerStatus;
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| 126 | DWORD timerID;
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| 127 | enum {
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| 128 | InActive = 0,
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| 129 | Running,
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| 130 | Stopped
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| 131 | };
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| 132 | static int timerPeriod;
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| 133 |
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| 134 | // Linked list management
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| 135 | OS2Timer* next; // Next Timer
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| 136 | static OS2Timer* timers; // List of Timer
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| 137 |
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| 138 | };
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| 139 |
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| 140 | #endif
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