66 lines
1.1 KiB
C
66 lines
1.1 KiB
C
#include "irq.h"
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#include "kthread.h"
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#include "list.h"
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#include "wait.h"
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static struct wait_queue *waitQueues = NULL;
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int waitQueueInit(struct wait_queue *wq)
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{
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uint32_t flags;
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disable_IRQs(flags);
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list_add_tail(waitQueues, wq);
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restore_IRQs(flags);
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return 0;
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}
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int waitQueueFree(struct wait_queue *wq)
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{
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uint32_t flags;
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disable_IRQs(flags);
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list_delete(waitQueues, wq);
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restore_IRQs(flags);
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return 0;
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}
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int wakeUp(struct wait_queue *wq)
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{
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struct kthread *th;
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uint32_t flags;
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disable_IRQs(flags);
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list_collapse(wq->thread, th)
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{
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kthreadAddThread(th);
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}
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restore_IRQs(flags);
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return 0;
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}
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int wait(struct wait_queue *wq)
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{
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return waitTimeout(wq, 0);
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}
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int waitTimeout(struct wait_queue *wq, unsigned long msec)
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{
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struct kthread *current, *next;
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uint32_t flags;
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int ret;
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disable_IRQs(flags);
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current = getCurrentThread();
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current->state = WAITING;
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next = kthreadSelectNext();
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kthreadUnsched(current);
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list_add_tail(wq->thread, current);
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ret = kthreadWait(current, next, msec);
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restore_IRQs(flags);
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return ret;
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}
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