/*
 * thread.h
 *
 *  Created on: Apr 13, 2015
 *      Author: tkl
 */

#ifndef THREAD_H_
#define THREAD_H_

#define MAX_THREAD_COUNT	32

enum thread_priority {
	THREAD_PRIO_IDLE = 0,
	THREAD_PRIO_LOW,
	THREAD_PRIO_MEDIUM,
	THREAD_PRIO_HIGH
};

enum thread_status {
	THREAD_STATUS_INIT = 0,
	THREAD_STATUS_EXECUTING,
	THREAD_STATUS_WAITING,
	THREAD_STATUS_SLEEPING,
	THREAD_STATUS_BLOCKING
};

struct thread_context {
	stack_t *sp;					/**< thread's stack pointer */
	stack_t *stack;					/**< thread's stack start address */
	unsigned int stack_size;		/**< thread's stack size */
	unsigned int pid;				/**< thread's process id */
	enum thread_priority priority;	/**< thread's priority */
	enum thread_status status;		/**< thread's status */
	unsigned long next_executing_time;
	void *wakeup_blocking_source;
	struct queue_node sem_queue_node;
};

struct thread_list {
	unsigned int count;		//<! Number of elements in list
	struct thread_context *list[MAX_THREAD_COUNT];
};

void thread_init(void);
struct thread_context *thread_create(
		struct thread_context *thread,
		stack_t *stack,
		unsigned int stack_size,
		void (*thread_func)(void *),
		void *arg,
		enum thread_priority priority);

void thread_switch_context(void);

void thread_exit(void);

void blocking_read_wakeup(const void *src);


#endif /* THREAD_H_ */