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/*
* mbox.h
*
* Simple thread mailbox interface
*/
#ifndef _MBOX_H
#define _MBOX_H
#include "thread.h"
struct mailbox {
struct semaphore prod_sem; /* Producer semaphore (empty slots) */
struct semaphore cons_sem; /* Consumer semaphore (data slots) */
struct semaphore head_sem; /* Head pointer semaphore */
struct semaphore tail_sem; /* Tail pointer semaphore */
void **wrap; /* Where pointers wrap */
void **head; /* Head pointer */
void **tail; /* Tail pointer */
void *data[]; /* Data array */
};
void mbox_init(struct mailbox *mbox, size_t size);
int mbox_post(struct mailbox *mbox, void *msg, jiffies_t timeout);
jiffies_t mbox_fetch(struct mailbox *mbox, void **msg, jiffies_t timeout);
#endif /* _MBOX_H */
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