WebSVN – HelenOS – Diff – /trunk/kernel/generic/include/proc/thread.h


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup genericproc
 * @{
 */
/** @file
 */
 
#ifndef KERN_THREAD_H_
#define KERN_THREAD_H_
 
#include <synch/waitq.h>
#include <proc/task.h>
#include <time/timeout.h>
#include <cpu.h>
#include <synch/rwlock.h>
#include <adt/btree.h>
#include <mm/slab.h>
#include <arch/cpu.h>
#include <mm/tlb.h>
#include <proc/uarg.h>
 
#define THREAD_STACK_SIZE   STACK_SIZE
#define THREAD_NAME_BUFLEN  20
 
extern char *thread_states[];
 
/* Thread flags */
#define THREAD_FLAG_WIRED   (1 << 0)    /**< Thread cannot be migrated to another CPU. */
#define THREAD_FLAG_STOLEN  (1 << 1)    /**< Thread was migrated to another CPU and has not run yet. */
#define THREAD_FLAG_USPACE  (1 << 2)    /**< Thread executes in userspace. */
 
/** Thread states. */
typedef enum {
    Invalid,    /**< It is an error, if thread is found in this state. */
    Running,    /**< State of a thread that is currently executing on some CPU. */
    Sleeping,   /**< Thread in this state is waiting for an event. */
    Ready,      /**< State of threads in a run queue. */
    Entering,   /**< Threads are in this state before they are first readied. */
    Exiting,    /**< After a thread calls thread_exit(), it is put into Exiting state. */
    Undead      /**< Threads that were not detached but exited are in the Undead state. */
} state_t;
 
/** Join types. */
typedef enum {
    None,
    TaskClnp,   /**< The thread will be joined by ktaskclnp thread. */
    TaskGC      /**< The thread will be joined by ktaskgc thread. */
} thread_join_type_t;
 
/** Thread structure. There is one per thread. */
typedef struct thread {
    link_t rq_link;             /**< Run queue link. */
    link_t wq_link;             /**< Wait queue link. */
    link_t th_link;             /**< Links to threads within containing task. */
   
    /** Lock protecting thread structure.
     *
     * Protects the whole thread structure except list links above.
     */
    SPINLOCK_DECLARE(lock);
 
    char name[THREAD_NAME_BUFLEN];
 
    void (* thread_code)(void *);       /**< Function implementing the thread. */
    void *thread_arg;           /**< Argument passed to thread_code() function. */
 
    /** From here, the stored context is restored when the thread is scheduled. */
    context_t saved_context;
    /** From here, the stored timeout context is restored when sleep times out. */
    context_t sleep_timeout_context;
    /** From here, the stored interruption context is restored when sleep is interrupted. */
    context_t sleep_interruption_context;
 
    bool sleep_interruptible;       /**< If true, the thread can be interrupted from sleep. */
    waitq_t *sleep_queue;           /**< Wait queue in which this thread sleeps. */
    timeout_t sleep_timeout;        /**< Timeout used for timeoutable sleeping.  */
    volatile int timeout_pending;       /**< Flag signalling sleep timeout in progress. */
 
    /** True if this thread is executing copy_from_uspace(). False otherwise. */
    bool in_copy_from_uspace;
    /** True if this thread is executing copy_to_uspace(). False otherwise. */
    bool in_copy_to_uspace;
   
    /**
     * If true, the thread will not go to sleep at all and will
     * call thread_exit() before returning to userspace.
     */
    bool interrupted;          
   
    thread_join_type_t  join_type;  /**< Who joinins the thread. */
    bool detached;              /**< If true, thread_join_timeout() cannot be used on this thread. */
    waitq_t join_wq;            /**< Waitq for thread_join_timeout(). */
 
    fpu_context_t *saved_fpu_context;
    int fpu_context_exists;
 
    /*
     * Defined only if thread doesn't run.
     * It means that fpu context is in CPU that last time executes this thread.
     * This disables migration.
     */
    int fpu_context_engaged;
 
    rwlock_type_t rwlock_holder_type;
 
    void (* call_me)(void *);       /**< Funtion to be called in scheduler before the thread is put asleep. */
    void *call_me_with;         /**< Argument passed to call_me(). */
 
    state_t state;              /**< Thread's state. */
    int flags;              /**< Thread's flags. */
   
    cpu_t *cpu;             /**< Thread's CPU. */
    task_t *task;               /**< Containing task. */
 
    uint64_t ticks;             /**< Ticks before preemption. */
   
    uint64_t cycles;            /**< Thread accounting. */
    uint64_t last_cycle;        /**< Last sampled cycle. */
    bool uncounted;             /**< Thread doesn't affect accumulated accounting. */
 
    int priority;               /**< Thread's priority. Implemented as index to CPU->rq */
    uint32_t tid;               /**< Thread ID. */
   
    thread_arch_t arch;         /**< Architecture-specific data. */
 
    uint8_t *kstack;            /**< Thread's kernel stack. */
} thread_t;
 
/** Thread list lock.
 *
 * This lock protects all link_t structures chained in threads_head.
 * Must be acquired before T.lock for each T of type thread_t.
 *
 */
SPINLOCK_EXTERN(threads_lock);
 
extern btree_t threads_btree;           /**< B+tree containing all threads. */
 
extern void thread_init(void);
extern thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags, char *name, bool uncounted);
extern void thread_ready(thread_t *t);
extern void thread_exit(void) __attribute__((noreturn));
 
#ifndef thread_create_arch
extern void thread_create_arch(thread_t *t);
#endif
#ifndef thr_constructor_arch
extern void thr_constructor_arch(thread_t *t);
#endif
#ifndef thr_destructor_arch
extern void thr_destructor_arch(thread_t *t);
#endif
 
extern void thread_sleep(uint32_t sec);
extern void thread_usleep(uint32_t usec);
 
#define thread_join(t)  thread_join_timeout((t), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE)
extern int thread_join_timeout(thread_t *t, uint32_t usec, int flags);
extern void thread_detach(thread_t *t);
 
extern void thread_register_call_me(void (* call_me)(void *), void *call_me_with);
extern void thread_print_list(void);
extern void thread_destroy(thread_t *t);
extern void thread_update_accounting(void);
extern bool thread_exists(thread_t *t);
extern void thread_interrupt_sleep(thread_t *t);
 
/* Fpu context slab cache */
extern slab_cache_t *fpu_context_slab;
 
/** Thread syscall prototypes. */
unative_t sys_thread_create(uspace_arg_t *uspace_uarg, char *uspace_name);
unative_t sys_thread_exit(int uspace_status);
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/include/proc/thread.h @ 2128 – Rev 2096 → 2103

Rev 2096		Rev 2103
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup genericproc	29	/** @addtogroup genericproc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_THREAD_H_	35	#ifndef KERN_THREAD_H_
36	#define KERN_THREAD_H_	36	#define KERN_THREAD_H_
37		37
38	#include <synch/waitq.h>	38	#include <synch/waitq.h>
39	#include <proc/task.h>	39	#include <proc/task.h>
-		40	#include <time/timeout.h>
40	#include <cpu.h>	41	#include <cpu.h>
41	#include <synch/rwlock.h>	42	#include <synch/rwlock.h>
42	#include <adt/btree.h>	43	#include <adt/btree.h>
43	#include <mm/slab.h>	44	#include <mm/slab.h>
44	#include <arch/cpu.h>	45	#include <arch/cpu.h>
45	#include <mm/tlb.h>	46	#include <mm/tlb.h>
46	#include <proc/uarg.h>	47	#include <proc/uarg.h>
47		48
48	#define THREAD_STACK_SIZE STACK_SIZE	49	#define THREAD_STACK_SIZE STACK_SIZE
49	#define THREAD_NAME_BUFLEN 20	50	#define THREAD_NAME_BUFLEN 20
50		51
51	extern char *thread_states[];	52	extern char *thread_states[];
52		53
53	/* Thread flags */	54	/* Thread flags */
54	#define THREAD_FLAG_WIRED (1 << 0) /*< Thread cannot be migrated to another CPU. /	55	#define THREAD_FLAG_WIRED (1 << 0) /*< Thread cannot be migrated to another CPU. /
55	#define THREAD_FLAG_STOLEN (1 << 1) /*< Thread was migrated to another CPU and has not run yet. /	56	#define THREAD_FLAG_STOLEN (1 << 1) /*< Thread was migrated to another CPU and has not run yet. /
56	#define THREAD_FLAG_USPACE (1 << 2) /*< Thread executes in userspace. /	57	#define THREAD_FLAG_USPACE (1 << 2) /*< Thread executes in userspace. /
57		58
-		59	/** Thread states. */
-		60	typedef enum {
-		61	Invalid, /*< It is an error, if thread is found in this state. /
-		62	Running, /*< State of a thread that is currently executing on some CPU. /
-		63	Sleeping, /*< Thread in this state is waiting for an event. /
-		64	Ready, /*< State of threads in a run queue. /
-		65	Entering, /*< Threads are in this state before they are first readied. /
-		66	Exiting, /*< After a thread calls thread_exit(), it is put into Exiting state. /
-		67	Undead /*< Threads that were not detached but exited are in the Undead state. /
-		68	} state_t;
-		69
-		70	/** Join types. */
-		71	typedef enum {
-		72	None,
-		73	TaskClnp, /*< The thread will be joined by ktaskclnp thread. /
-		74	TaskGC /*< The thread will be joined by ktaskgc thread. /
-		75	} thread_join_type_t;
-		76
58	/** Thread structure. There is one per thread. */	77	/** Thread structure. There is one per thread. */
59	typedef struct thread {	78	typedef struct thread {
60	link_t rq_link; /*< Run queue link. /	79	link_t rq_link; /*< Run queue link. /
61	link_t wq_link; /*< Wait queue link. /	80	link_t wq_link; /*< Wait queue link. /
62	link_t th_link; /*< Links to threads within containing task. /	81	link_t th_link; /*< Links to threads within containing task. /
63		82
64	/** Lock protecting thread structure.	83	/** Lock protecting thread structure.
65	*	84	*
66	* Protects the whole thread structure except list links above.	85	* Protects the whole thread structure except list links above.
67	*/	86	*/
68	SPINLOCK_DECLARE(lock);	87	SPINLOCK_DECLARE(lock);
69		88
70	char name[THREAD_NAME_BUFLEN];	89	char name[THREAD_NAME_BUFLEN];
71		90
72	void (* thread_code)(void ); /< Function implementing the thread. /	91	void (* thread_code)(void ); /< Function implementing the thread. /
73	void thread_arg; /< Argument passed to thread_code() function. /	92	void thread_arg; /< Argument passed to thread_code() function. /
74		93
75	/** From here, the stored context is restored when the thread is scheduled. */	94	/** From here, the stored context is restored when the thread is scheduled. */
76	context_t saved_context;	95	context_t saved_context;
77	/** From here, the stored timeout context is restored when sleep times out. */	96	/** From here, the stored timeout context is restored when sleep times out. */
78	context_t sleep_timeout_context;	97	context_t sleep_timeout_context;
79	/** From here, the stored interruption context is restored when sleep is interrupted. */	98	/** From here, the stored interruption context is restored when sleep is interrupted. */
80	context_t sleep_interruption_context;	99	context_t sleep_interruption_context;
81		100
82	bool sleep_interruptible; /*< If true, the thread can be interrupted from sleep. /	101	bool sleep_interruptible; /*< If true, the thread can be interrupted from sleep. /
83	waitq_t sleep_queue; /< Wait queue in which this thread sleeps. /	102	waitq_t sleep_queue; /< Wait queue in which this thread sleeps. /
84	timeout_t sleep_timeout; /*< Timeout used for timeoutable sleeping. /	103	timeout_t sleep_timeout; /*< Timeout used for timeoutable sleeping. /
85	volatile int timeout_pending; /*< Flag signalling sleep timeout in progress. /	104	volatile int timeout_pending; /*< Flag signalling sleep timeout in progress. /
86		105
87	/** True if this thread is executing copy_from_uspace(). False otherwise. */	106	/** True if this thread is executing copy_from_uspace(). False otherwise. */
88	bool in_copy_from_uspace;	107	bool in_copy_from_uspace;
89	/** True if this thread is executing copy_to_uspace(). False otherwise. */	108	/** True if this thread is executing copy_to_uspace(). False otherwise. */
90	bool in_copy_to_uspace;	109	bool in_copy_to_uspace;
91		110
92	/**	111	/**
93	* If true, the thread will not go to sleep at all and will	112	* If true, the thread will not go to sleep at all and will
94	* call thread_exit() before returning to userspace.	113	* call thread_exit() before returning to userspace.
95	*/	114	*/
96	bool interrupted;	115	bool interrupted;
97		116
98	thread_join_type_t join_type; /*< Who joinins the thread. /	117	thread_join_type_t join_type; /*< Who joinins the thread. /
99	bool detached; /*< If true, thread_join_timeout() cannot be used on this thread. /	118	bool detached; /*< If true, thread_join_timeout() cannot be used on this thread. /
100	waitq_t join_wq; /*< Waitq for thread_join_timeout(). /	119	waitq_t join_wq; /*< Waitq for thread_join_timeout(). /
101		120
102	fpu_context_t *saved_fpu_context;	121	fpu_context_t *saved_fpu_context;
103	int fpu_context_exists;	122	int fpu_context_exists;
104		123
105	/*	124	/*
106	* Defined only if thread doesn't run.	125	* Defined only if thread doesn't run.
107	* It means that fpu context is in CPU that last time executes this thread.	126	* It means that fpu context is in CPU that last time executes this thread.
108	* This disables migration.	127	* This disables migration.
109	*/	128	*/
110	int fpu_context_engaged;	129	int fpu_context_engaged;
111		130
112	rwlock_type_t rwlock_holder_type;	131	rwlock_type_t rwlock_holder_type;
113		132
114	void (* call_me)(void ); /< Funtion to be called in scheduler before the thread is put asleep. /	133	void (* call_me)(void ); /< Funtion to be called in scheduler before the thread is put asleep. /
115	void call_me_with; /< Argument passed to call_me(). /	134	void call_me_with; /< Argument passed to call_me(). /
116		135
117	state_t state; /*< Thread's state. /	136	state_t state; /*< Thread's state. /
118	int flags; /*< Thread's flags. /	137	int flags; /*< Thread's flags. /
119		138
120	cpu_t cpu; /< Thread's CPU. /	139	cpu_t cpu; /< Thread's CPU. /
121	task_t task; /< Containing task. /	140	task_t task; /< Containing task. /
122		141
123	uint64_t ticks; /*< Ticks before preemption. /	142	uint64_t ticks; /*< Ticks before preemption. /
124		143
125	uint64_t cycles; /*< Thread accounting. /	144	uint64_t cycles; /*< Thread accounting. /
126	uint64_t last_cycle; /*< Last sampled cycle. /	145	uint64_t last_cycle; /*< Last sampled cycle. /
127	bool uncounted; /*< Thread doesn't affect accumulated accounting. /	146	bool uncounted; /*< Thread doesn't affect accumulated accounting. /
128		147
129	int priority; /*< Thread's priority. Implemented as index to CPU->rq /	148	int priority; /*< Thread's priority. Implemented as index to CPU->rq /
130	uint32_t tid; /*< Thread ID. /	149	uint32_t tid; /*< Thread ID. /
131		150
132	thread_arch_t arch; /*< Architecture-specific data. /	151	thread_arch_t arch; /*< Architecture-specific data. /
133		152
134	uint8_t kstack; /< Thread's kernel stack. /	153	uint8_t kstack; /< Thread's kernel stack. /
135	} thread_t;	154	} thread_t;
136		155
137	/** Thread list lock.	156	/** Thread list lock.
138	*	157	*
139	* This lock protects all link_t structures chained in threads_head.	158	* This lock protects all link_t structures chained in threads_head.
140	* Must be acquired before T.lock for each T of type thread_t.	159	* Must be acquired before T.lock for each T of type thread_t.
141	*	160	*
142	*/	161	*/
143	SPINLOCK_EXTERN(threads_lock);	162	SPINLOCK_EXTERN(threads_lock);
144		163
145	extern btree_t threads_btree; /*< B+tree containing all threads. /	164	extern btree_t threads_btree; /*< B+tree containing all threads. /
146		165
147	extern void thread_init(void);	166	extern void thread_init(void);
148	extern thread_t thread_create(void ( func)(void ), void arg, task_t task, int flags, char name, bool uncounted);	167	extern thread_t thread_create(void ( func)(void ), void arg, task_t task, int flags, char name, bool uncounted);
149	extern void thread_ready(thread_t *t);	168	extern void thread_ready(thread_t *t);
150	extern void thread_exit(void) __attribute__((noreturn));	169	extern void thread_exit(void) __attribute__((noreturn));
151		170
152	#ifndef thread_create_arch	171	#ifndef thread_create_arch
153	extern void thread_create_arch(thread_t *t);	172	extern void thread_create_arch(thread_t *t);
154	#endif	173	#endif
155	#ifndef thr_constructor_arch	174	#ifndef thr_constructor_arch
156	extern void thr_constructor_arch(thread_t *t);	175	extern void thr_constructor_arch(thread_t *t);
157	#endif	176	#endif
158	#ifndef thr_destructor_arch	177	#ifndef thr_destructor_arch
159	extern void thr_destructor_arch(thread_t *t);	178	extern void thr_destructor_arch(thread_t *t);
160	#endif	179	#endif
161		180
162	extern void thread_sleep(uint32_t sec);	181	extern void thread_sleep(uint32_t sec);
163	extern void thread_usleep(uint32_t usec);	182	extern void thread_usleep(uint32_t usec);
164		183
165	#define thread_join(t) thread_join_timeout((t), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE)	184	#define thread_join(t) thread_join_timeout((t), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE)
166	extern int thread_join_timeout(thread_t *t, uint32_t usec, int flags);	185	extern int thread_join_timeout(thread_t *t, uint32_t usec, int flags);
167	extern void thread_detach(thread_t *t);	186	extern void thread_detach(thread_t *t);
168		187
169	extern void thread_register_call_me(void (* call_me)(void ), void call_me_with);	188	extern void thread_register_call_me(void (* call_me)(void ), void call_me_with);
170	extern void thread_print_list(void);	189	extern void thread_print_list(void);
171	extern void thread_destroy(thread_t *t);	190	extern void thread_destroy(thread_t *t);
172	extern void thread_update_accounting(void);	191	extern void thread_update_accounting(void);
173	extern bool thread_exists(thread_t *t);	192	extern bool thread_exists(thread_t *t);
174	extern void thread_interrupt_sleep(thread_t *t);	193	extern void thread_interrupt_sleep(thread_t *t);
175		194
176	/* Fpu context slab cache */	195	/* Fpu context slab cache */
177	extern slab_cache_t *fpu_context_slab;	196	extern slab_cache_t *fpu_context_slab;
178		197
179	/** Thread syscall prototypes. */	198	/** Thread syscall prototypes. */
180	unative_t sys_thread_create(uspace_arg_t uspace_uarg, char uspace_name);	199	unative_t sys_thread_create(uspace_arg_t uspace_uarg, char uspace_name);
181	unative_t sys_thread_exit(int uspace_status);	200	unative_t sys_thread_exit(int uspace_status);
182		201
183	#endif	202	#endif
184		203
185	/** @}	204	/** @}
186	*/	205	*/
187		206