38 lines
620 B
C
38 lines
620 B
C
#include "wait.h"
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#include "irq.h"
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#include "kthread.h"
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#include "list.h"
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int wake_up(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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struct kthread *current;
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uint32_t flags;
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disable_IRQs(flags);
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current = getCurrenThread();
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kthreadUnsched(current);
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list_add_tail(wq->thread, current);
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current->state = WAITING;
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kthreadSaveAndYield(current);
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restore_IRQs(flags);
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return 0;
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}
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