Mercurial > sdl-ios-xcode
annotate src/timer/macos/SDL_systimer.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 | 14717b52abc0 4c270c3a88ed |
| 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 #include "FastTimes.h" | |
| 38 | |
| 39 #define MS_PER_TICK (1000.0/60.0) /* MacOS tick = 1/60 second */ | |
| 40 | |
| 41 | |
| 42 #define kTwoPower32 (4294967296.0) /* 2^32 */ | |
| 43 | |
| 44 static double start_tick; | |
| 45 static int is_fast_inited = 0; | |
| 46 | |
| 47 void SDL_StartTicks(void) | |
| 48 { | |
| 49 if ( ! is_fast_inited ) // important to check or FastTime may hang machine! | |
| 50 SDL_SYS_TimerInit(); | |
| 51 | |
| 52 start_tick = FastMicroseconds(); | |
| 53 } | |
| 54 | |
| 55 Uint32 SDL_GetTicks(void) | |
| 56 { | |
| 57 | |
| 58 if ( ! is_fast_inited ) | |
| 59 SDL_SYS_TimerInit(); | |
| 60 | |
| 61 return FastMilliseconds(); | |
| 62 } | |
| 63 | |
| 64 void SDL_Delay(Uint32 ms) | |
| 65 { | |
| 66 Uint32 stop, now; | |
| 67 | |
| 68 stop = SDL_GetTicks() + ms; | |
| 69 do { | |
| 70 SystemTask(); | |
| 71 | |
| 72 now = SDL_GetTicks(); | |
| 73 | |
| 74 } while ( stop > now ); | |
| 75 } | |
| 76 | |
| 77 /* | |
| 78 void SDL_StartTicks(void) | |
| 79 { | |
| 80 // FIXME: Should we implement a wrapping algorithm, like Win32? | |
| 81 } | |
| 82 | |
| 83 Uint32 SDL_GetTicks(void) | |
| 84 { | |
| 85 UnsignedWide ms; | |
| 86 | |
| 87 Microseconds (&ms); | |
| 88 | |
| 89 return ( ms.lo / 1000 ); | |
| 90 } | |
| 91 | |
| 92 void SDL_Delay(Uint32 ms) | |
| 93 { | |
| 94 | |
| 95 UnsignedWide microsecs; | |
| 96 UInt32 stop; | |
| 97 | |
| 98 Microseconds (µsecs); | |
| 99 | |
| 100 stop = microsecs.lo + (ms * 1000); | |
| 101 | |
| 102 while ( stop > microsecs.lo ) { | |
| 103 | |
| 104 SystemTask (); | |
| 105 | |
| 106 Microseconds (µsecs); | |
| 107 } | |
| 108 | |
| 109 }*/ | |
| 110 | |
| 111 /* Data to handle a single periodic alarm */ | |
| 112 typedef struct _ExtendedTimerRec | |
| 113 { | |
| 114 TMTask tmTask; | |
| 115 ProcessSerialNumber taskPSN; | |
| 116 } ExtendedTimerRec, *ExtendedTimerPtr; | |
| 117 | |
| 118 static ExtendedTimerRec gExtendedTimerRec; | |
| 119 | |
| 120 | |
| 121 int SDL_SYS_TimerInit(void) | |
| 122 { | |
| 123 FastInitialize (); | |
| 124 is_fast_inited = 1; | |
| 125 | |
| 126 return(0); | |
| 127 } | |
| 128 | |
| 129 void SDL_SYS_TimerQuit(void) | |
| 130 { | |
| 131 /* We don't need a cleanup? */ | |
| 132 return; | |
| 133 } | |
| 134 | |
| 135 /* Our Stub routine to set up and then call the real routine. */ | |
| 136 pascal void TimerCallbackProc(TMTaskPtr tmTaskPtr) | |
| 137 { | |
| 138 Uint32 ms; | |
| 139 | |
| 140 WakeUpProcess(&((ExtendedTimerPtr) tmTaskPtr)->taskPSN); | |
| 141 | |
| 142 ms = SDL_alarm_callback(SDL_alarm_interval); | |
| 143 if ( ms ) { | |
| 144 SDL_alarm_interval = ROUND_RESOLUTION(ms); | |
| 145 PrimeTime((QElemPtr)&gExtendedTimerRec.tmTask, | |
| 146 SDL_alarm_interval); | |
| 147 } else { | |
| 148 SDL_alarm_interval = 0; | |
| 149 } | |
| 150 } | |
| 151 | |
| 152 int SDL_SYS_StartTimer(void) | |
| 153 { | |
| 154 /* | |
| 155 * Configure the global structure that stores the timing information. | |
| 156 */ | |
| 157 gExtendedTimerRec.tmTask.qLink = NULL; | |
| 158 gExtendedTimerRec.tmTask.qType = 0; | |
| 159 gExtendedTimerRec.tmTask.tmAddr = NewTimerProc(TimerCallbackProc); | |
| 160 gExtendedTimerRec.tmTask.tmCount = 0; | |
| 161 gExtendedTimerRec.tmTask.tmWakeUp = 0; | |
| 162 gExtendedTimerRec.tmTask.tmReserved = 0; | |
| 163 GetCurrentProcess(&gExtendedTimerRec.taskPSN); | |
| 164 | |
| 165 /* Install the task record */ | |
| 166 InsXTime((QElemPtr)&gExtendedTimerRec.tmTask); | |
| 167 | |
| 168 /* Go! */ | |
| 169 PrimeTime((QElemPtr)&gExtendedTimerRec.tmTask, SDL_alarm_interval); | |
| 170 return(0); | |
| 171 } | |
| 172 | |
| 173 void SDL_SYS_StopTimer(void) | |
| 174 { | |
| 175 RmvTime((QElemPtr)&gExtendedTimerRec.tmTask); | |
| 176 } | |
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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
|
177 |
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92947e3a18db
Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
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178 #endif /* SDL_TIMER_MACOS */ |