pandory500/SDL-mirror
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Release CPU when waiting

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401046
This commit is contained in:
Patrice Mandin 2005-04-01 15:19:26 +00:00
parent ea3ab2c3d9
commit dc6bb60504
1 changed files with 11 additions and 2 deletions
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13
src/timer/mint/SDL_systimer.c
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@ -39,8 +39,10 @@ static char rcsid =
#include <string.h> #include <string.h>
#include <errno.h> #include <errno.h>
#include <mint/osbind.h> #include <mint/cookie.h>
#include <mint/sysvars.h> #include <mint/sysvars.h>
#include <mint/osbind.h>
#include <mint/mintbind.h>
#include "SDL_error.h" #include "SDL_error.h"
#include "SDL_timer.h" #include "SDL_timer.h"
@ -52,10 +54,12 @@ static char rcsid =
/* The first ticks value of the application */ /* The first ticks value of the application */
static Uint32 start; static Uint32 start;
static SDL_bool supervisor; static SDL_bool supervisor;
static int mint_present; /* can we use Syield() ? */
void SDL_StartTicks(void) void SDL_StartTicks(void)
{ {
void *oldpile; void *oldpile;
unsigned long dummy;
/* Set first ticks value */ /* Set first ticks value */
oldpile=(void *)Super(0); oldpile=(void *)Super(0);
@ -63,12 +67,14 @@ void SDL_StartTicks(void)
Super(oldpile); Super(oldpile);
start *= 5; /* One _hz_200 tic is 5ms */ start *= 5; /* One _hz_200 tic is 5ms */
mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);
} }
Uint32 SDL_GetTicks (void) Uint32 SDL_GetTicks (void)
{ {
Uint32 now; Uint32 now;
void *oldpile; void *oldpile=NULL;
/* Check if we are in supervisor mode /* Check if we are in supervisor mode
(this is the case when called from SDL_ThreadedTimerCheck, (this is the case when called from SDL_ThreadedTimerCheck,
@ -93,6 +99,9 @@ void SDL_Delay (Uint32 ms)
now = SDL_GetTicks(); now = SDL_GetTicks();
while ((SDL_GetTicks()-now)<ms){ while ((SDL_GetTicks()-now)<ms){
if (mint_present) {
Syield();
}
} }
} }