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80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
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* Copyright (C) 2013 Freie Universität Berlin
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*
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* This file subject to the terms and conditions of the GNU Lesser General
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* Public License. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @addtogroup core_thread
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* @{
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*
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* @file tcb.h
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* @brief Thread context block definition
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*
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* @author Heiko Will
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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*/
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#ifndef TCB_H_
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#define TCB_H_
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#include <stdint.h>
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#include "queue.h"
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#include "clist.h"
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#include "cib.h"
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#include "msg.h"
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/**
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* @brief Thread status list
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* @{
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*/
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/**
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* @brief Blocked states.
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* @{
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*/
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#define STATUS_STOPPED 0 /**< has terminated */
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#define STATUS_SLEEPING 1 /**< sleeping */
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#define STATUS_MUTEX_BLOCKED 2 /**< waiting for a locked mutex */
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#define STATUS_RECEIVE_BLOCKED 3 /**< waiting for a message */
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#define STATUS_SEND_BLOCKED 4 /**< waiting for message to be delivered*/
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#define STATUS_REPLY_BLOCKED 5 /**< waiting for a message response */
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/** @} */
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/**
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* @brief These have to be on a run queue.
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* @{*/
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#define STATUS_ON_RUNQUEUE STATUS_RUNNING /**< to check if on run queue:
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`st >= STATUS_ON_RUNQUEUE` */
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#define STATUS_RUNNING 6 /**< currently running */
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#define STATUS_PENDING 7 /**< waiting to be scheduled to run */
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/** @} */
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/** @} */
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/**
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* @brief @c tcb_t holds thread's context data.
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*/
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typedef struct tcb_t {
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char *sp; /**< thread's stack pointer */
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uint16_t status; /**< thread's status */
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uint16_t pid; /**< thread's process id */
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uint16_t priority; /**< thread's priority */
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clist_node_t rq_entry; /**< run queue entry */
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void *wait_data; /**< holding messages */
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queue_node_t msg_waiters; /**< threads waiting on message */
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cib_t msg_queue; /**< message queue */
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msg_t *msg_array; /**< memory holding messages */
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const char *name; /**< thread's name */
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char *stack_start; /**< thread's stack start address */
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int stack_size; /**< thread's stack size */
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} tcb_t;
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#endif /* TCB_H_ */
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/** @} */
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