Mercurial > sdl-ios-xcode
annotate src/timer/macos/SDL_MPWtimer.c @ 1775:5572e4204f36
Date: Sun, 7 May 2006 19:22:33 -0400
From: Mike Frysinger
Subject: [SDL] [patch] fix building with DirectFB-0.9.25.1
another DirectFB release, another small bit of API breakage :)
this time around, DIKI_ALTGR has been removed and DIKI_ALT_R is supposed to be
used ... DIKI_ALT_R is not a new define, so there shouldnt be any need for
checking the DirectFB version ... it should work with older DirectFB's as
well
thanks to Sascha Schwarz for pointing this out on the Gentoo bugzilla:
http://bugs.gentoo.org/132571
-mike
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 08 May 2006 02:09:34 +0000 |
| parents | 92947e3a18db |
| children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
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24 #ifdef SDL_TIMER_MACOS |
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25 |
| 0 | 26 #include <Types.h> |
| 27 #include <Timer.h> | |
| 28 #include <OSUtils.h> | |
| 29 #include <Gestalt.h> | |
| 30 #include <Processes.h> | |
| 31 | |
| 32 #include <LowMem.h> | |
| 33 | |
| 34 #include "SDL_timer.h" | |
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35 #include "../SDL_timer_c.h" |
| 0 | 36 |
| 37 #define MS_PER_TICK (1000/60) /* MacOS tick = 1/60 second */ | |
| 38 | |
| 39 /* Note: This is only a step above the original 1/60s implementation. | |
| 40 * For a good implementation, see FastTimes.[ch], by Matt Slot. | |
| 41 */ | |
| 42 #define USE_MICROSECONDS | |
| 43 #define WideTo64bit(w) (*(UInt64 *) &(w)) | |
| 44 | |
| 45 UInt64 start; | |
| 46 | |
| 47 void SDL_StartTicks(void) | |
| 48 { | |
| 49 #ifdef USE_MICROSECONDS | |
| 50 UnsignedWide now; | |
| 51 | |
| 52 Microseconds(&now); | |
| 53 start = WideTo64bit(now); | |
| 54 #else | |
| 55 /* FIXME: Should we implement a wrapping algorithm, like Win32? */ | |
| 56 #endif | |
| 57 } | |
| 58 | |
| 59 Uint32 SDL_GetTicks(void) | |
| 60 { | |
| 61 #ifdef USE_MICROSECONDS | |
| 62 UnsignedWide now; | |
| 63 | |
| 64 Microseconds(&now); | |
| 65 return (Uint32)((WideTo64bit(now)-start)/1000); | |
| 66 #else | |
| 67 return(LMGetTicks()*MS_PER_TICK); | |
| 68 #endif | |
| 69 } | |
| 70 | |
| 71 void SDL_Delay(Uint32 ms) | |
| 72 { | |
| 73 #ifdef USE_MICROSECONDS | |
| 74 Uint32 end_ms; | |
| 75 | |
| 76 end_ms = SDL_GetTicks() + ms; | |
| 77 do { | |
| 78 /* FIXME: Yield CPU? */ ; | |
| 79 } while ( SDL_GetTicks() < end_ms ); | |
| 80 #else | |
| 81 UInt32 unused; /* MJS */ | |
| 82 Delay(ms/MS_PER_TICK, &unused); | |
| 83 #endif | |
| 84 } | |
| 85 | |
| 86 | |
| 87 /* Data to handle a single periodic alarm */ | |
| 88 typedef struct _ExtendedTimerRec | |
| 89 { | |
| 90 TMTask tmTask; | |
| 91 ProcessSerialNumber taskPSN; | |
| 92 } ExtendedTimerRec, *ExtendedTimerPtr; | |
| 93 | |
| 94 static ExtendedTimerRec gExtendedTimerRec; | |
| 95 | |
| 96 | |
| 97 int SDL_SYS_TimerInit(void) | |
| 98 { | |
| 99 /* We don't need a setup? */ | |
| 100 return(0); | |
| 101 } | |
| 102 | |
| 103 void SDL_SYS_TimerQuit(void) | |
| 104 { | |
| 105 /* We don't need a cleanup? */ | |
| 106 return; | |
| 107 } | |
| 108 | |
| 109 /* Our Stub routine to set up and then call the real routine. */ | |
| 110 pascal void TimerCallbackProc(TMTaskPtr tmTaskPtr) | |
| 111 { | |
| 112 Uint32 ms; | |
| 113 | |
| 114 WakeUpProcess(&((ExtendedTimerPtr) tmTaskPtr)->taskPSN); | |
| 115 | |
| 116 ms = SDL_alarm_callback(SDL_alarm_interval); | |
| 117 if ( ms ) { | |
| 118 SDL_alarm_interval = ROUND_RESOLUTION(ms); | |
| 119 PrimeTime((QElemPtr)&gExtendedTimerRec.tmTask, | |
| 120 SDL_alarm_interval); | |
| 121 } else { | |
| 122 SDL_alarm_interval = 0; | |
| 123 } | |
| 124 } | |
| 125 | |
| 126 int SDL_SYS_StartTimer(void) | |
| 127 { | |
| 128 /* | |
| 129 * Configure the global structure that stores the timing information. | |
| 130 */ | |
| 131 gExtendedTimerRec.tmTask.qLink = NULL; | |
| 132 gExtendedTimerRec.tmTask.qType = 0; | |
| 133 gExtendedTimerRec.tmTask.tmAddr = NewTimerUPP(TimerCallbackProc); | |
| 134 gExtendedTimerRec.tmTask.tmCount = 0; | |
| 135 gExtendedTimerRec.tmTask.tmWakeUp = 0; | |
| 136 gExtendedTimerRec.tmTask.tmReserved = 0; | |
| 137 GetCurrentProcess(&gExtendedTimerRec.taskPSN); | |
| 138 | |
| 139 /* Install the task record */ | |
| 140 InsXTime((QElemPtr)&gExtendedTimerRec.tmTask); | |
| 141 | |
| 142 /* Go! */ | |
| 143 PrimeTime((QElemPtr)&gExtendedTimerRec.tmTask, SDL_alarm_interval); | |
| 144 return(0); | |
| 145 } | |
| 146 | |
| 147 void SDL_SYS_StopTimer(void) | |
| 148 { | |
| 149 RmvTime((QElemPtr)&gExtendedTimerRec.tmTask); | |
| 150 } | |
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1635
92947e3a18db
Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
151 |
|
92947e3a18db
Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
152 #endif /* SDL_TIMER_MACOS */ |