src/libultra/io/siacs.c


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#include "array_count.h"
#include "ultra64.h"

static OSMesg siAccessBuf[1];
OSMesgQueue __osSiAccessQueue;
u32 __osSiAccessQueueEnabled = false;

void __osSiCreateAccessQueue(void) {
    __osSiAccessQueueEnabled = true;
    osCreateMesgQueue(&__osSiAccessQueue, siAccessBuf, ARRAY_COUNT(siAccessBuf));
    osSendMesg(&__osSiAccessQueue, NULL, OS_MESG_NOBLOCK);
}

void __osSiGetAccess(void) {
    OSMesg msg;

    if (!__osSiAccessQueueEnabled) {
        __osSiCreateAccessQueue();
    }
    osRecvMesg(&__osSiAccessQueue, &msg, OS_MESG_BLOCK);
}

void __osSiRelAccess(void) {
    osSendMesg(&__osSiAccessQueue, NULL, OS_MESG_NOBLOCK);
}