matos/core/wait.h

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C
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#pragma once
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#include "thread.h"
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struct wait_queue {
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struct thread *thread;
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struct wait_queue *next;
struct wait_queue *prev;
};
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#define __WAITQUEUE_INITIALIZER(name) \
{ \
.thread = NULL, .next = NULL, .prev = NULL \
}
#define DECLARE_WAITQUEUE(name) \
struct wait_queue name = __WAITQUEUE_INITIALIZER(name)
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int waitQueueInit(struct wait_queue *);
int waitQueueFree(struct wait_queue *);
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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 wakeUp(struct wait_queue *);
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#define wait_event(wq, condition) \
do { \
if (condition) \
break; \
wait(wq); \
} while (1)
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struct semaphore {
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int count;
struct wait_queue *wait;
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};
struct mutex {
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struct thread *owner;
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struct wait_queue *wait;
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};