src/code/z_nulltask.c


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#include "ultra64.h"
#include "sched.h"

/**
 * Blocks the current thread until all queued scheduler tasks have completed.
 */
void Sched_FlushTaskQueue(void) {
    OSScTask task;
    OSMesgQueue queue;
    OSMesg msg;

    // Prepare a "NULL" task
    task.next = NULL;
    task.flags = OS_SC_NEEDS_RDP | OS_SC_NEEDS_RSP;
    task.msgQueue = &queue;
    task.msg = NULL;
    task.framebuffer = NULL;
    task.list.t.type = M_NULTASK;
    osCreateMesgQueue(task.msgQueue, &msg, 1);

    // Send it to and wake up the scheduler
    osSendMesg(&gScheduler.cmdQueue, (OSMesg)&task, OS_MESG_BLOCK);
    Sched_Notify(&gScheduler);

    // Wait until the task has been processed, indicating that no task is
    // running and the task queue is now empty.
    osRecvMesg(&queue, NULL, OS_MESG_BLOCK);
}