#include <ultra64.h>
#include "osint.h"

s32 osSendMesg(OSMesgQueue *mq, OSMesg msg, s32 flags)
{
    register u32 saveMask;
    register s32 last;
    saveMask = __osDisableInt();
    while (MQ_IS_FULL(mq))
    {
        if (flags == OS_MESG_BLOCK)
        {
            __osRunningThread->state = OS_STATE_WAITING;
            __osEnqueueAndYield(&mq->fullqueue);
        }
        else
        {
            __osRestoreInt(saveMask);
            return -1;
        }
    }
    last = (mq->first + mq->validCount) % mq->msgCount;
    mq->msg[last] = msg;
    mq->validCount++;
    if (mq->mtqueue->next != NULL)
    {
        osStartThread(__osPopThread(&mq->mtqueue));
    }
    __osRestoreInt(saveMask);
    return 0;
}