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#ifndef KERN_TASK_H_
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#ifndef KERN_TASK_H_
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#define KERN_TASK_H_
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#define KERN_TASK_H_
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#include <cpu.h>
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#include <cpu.h>
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#include <ipc/ipc.h>
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#include <synch/mutex.h>
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#include <synch/mutex.h>
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#include <synch/rwlock.h>
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#include <synch/rwlock.h>
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#include <synch/futex.h>
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#include <synch/futex.h>
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#include <adt/btree.h>
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#include <adt/btree.h>
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#include <arch/fpu_context.h>
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#include <arch/fpu_context.h>
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#include <arch/cpu.h>
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#include <arch/cpu.h>
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#include <mm/tlb.h>
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#include <mm/tlb.h>
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#include <proc/scheduler.h>
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#include <proc/scheduler.h>
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#define IPC_MAX_PHONES  16
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struct answerbox;
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struct task;
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struct thread;
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struct thread;
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typedef enum {
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    IPC_PHONE_FREE = 0,     /**< Phone is free and can be allocated */
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    IPC_PHONE_CONNECTING,   /**< Phone is connecting somewhere */
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    IPC_PHONE_CONNECTED,    /**< Phone is connected */
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    IPC_PHONE_HUNGUP,   /**< Phone is hung up, waiting for answers to come */
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    IPC_PHONE_SLAMMED       /**< Phone was hungup from server */
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} ipc_phone_state_t;
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/** Structure identifying phone (in TASK structure) */
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typedef struct {
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    SPINLOCK_DECLARE(lock);
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    link_t link;
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    struct answerbox *callee;
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    ipc_phone_state_t state;
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    atomic_t active_calls;
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} phone_t;
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typedef struct answerbox {
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    SPINLOCK_DECLARE(lock);
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    struct task *task;
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    waitq_t wq;
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    link_t connected_phones;    /**< Phones connected to this answerbox */
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    link_t calls;           /**< Received calls */
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    link_t dispatched_calls;    /* Should be hash table in the future */
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    link_t answers;         /**< Answered calls */
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    SPINLOCK_DECLARE(irq_lock);
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    link_t irq_notifs;          /**< Notifications from IRQ handlers */
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    link_t irq_head;        /**< IRQs with notifications to this answerbox. */
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} answerbox_t;
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/** Task structure. */
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/** Task structure. */
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typedef struct task {
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typedef struct task {
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    /** Task lock.
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    /** Task lock.
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     *
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     *
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     * Must be acquired before threads_lock and thread lock of any of its threads.
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     * Must be acquired before threads_lock and thread lock of any of its threads.