39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
#pragma once
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#include "kthread.h"
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struct wait_queue {
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struct kthread *thread;
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struct wait_queue *next;
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struct wait_queue *prev;
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};
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#define __WAITQUEUE_INITIALIZER(name) \
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{ \
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.thread = NULL, .next = NULL, .prev = NULL \
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}
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#define DECLARE_WAITQUEUE(name) \
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struct wait_queue name = __WAITQUEUE_INITIALIZER(name)
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int wait(struct wait_queue *);
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int waitTimeout(struct wait_queue *wq, unsigned long msec);
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int wake_up(struct wait_queue *);
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#define wait_event(wq, condition) \
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do { \
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if (condition) \
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break; \
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wait(wq); \
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} while (1)
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struct semaphore {
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int count;
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struct wait_queue *wait;
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};
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struct mutex {
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struct kthread *owner;
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struct wait_queue *wait;
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};
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