WebSVN – HelenOS – Diff – /trunk/kernel/generic/src/proc/thread.c


/*
 * 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.
 */
 
#include <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <mm/heap.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <arch/asm.h>
#include <arch.h>
#include <synch/synch.h>
#include <synch/spinlock.h>
#include <synch/waitq.h>
#include <synch/rwlock.h>
#include <cpu.h>
#include <func.h>
#include <context.h>
#include <list.h>
#include <typedefs.h>
#include <time/clock.h>
#include <list.h>
#include <config.h>
#include <arch/interrupt.h>
#include <smp/ipi.h>
#include <arch/faddr.h>
 
char *thread_states[] = {"Invalid", "Running", "Sleeping", "Ready", "Entering", "Exiting"};
 
spinlock_t threads_lock;
link_t threads_head;
 
static spinlock_t tidlock;
__u32 last_tid = 0;
 
/*
 * cushion() is provided to ensure that every thread
 * makes a call to thread_exit() when its implementing
 * function returns.
 *
 * cpu_priority_high()'d
 */
void cushion(void)
{
    void (*f)(void *) = THREAD->thread_code;
    void *arg = THREAD->thread_arg;
 
    before_thread_runs();
 
    /* this is where each thread wakes up after its creation */
    spinlock_unlock(&THREAD->lock);
    cpu_priority_low();
 
    f(arg);
    thread_exit();
    /* not reached */
}
 
void thread_init(void)
{
    THREAD = NULL;
    nrdy = 0;
    spinlock_initialize(&threads_lock);
    list_initialize(&threads_head);
}
 
void thread_ready(thread_t *t)
{
    cpu_t *cpu;
    runq_t *r;
    pri_t pri;
    int i, avg, send_ipi = 0;
 
    pri = cpu_priority_high();
 
    spinlock_lock(&t->lock);
 
    i = (t->pri < RQ_COUNT -1) ? ++t->pri : t->pri;
   
    cpu = CPU;
    if (t->flags & X_WIRED) {
        cpu = t->cpu;
    }
    spinlock_unlock(&t->lock);
   
        /*
     * Append t to respective ready queue on respective processor.
     */
    r = &cpu->rq[i];
    spinlock_lock(&r->lock);
    list_append(&t->rq_link, &r->rq_head);
    r->n++;
    spinlock_unlock(&r->lock);
 
    spinlock_lock(&nrdylock);
    avg = ++nrdy / config.cpu_active;
    spinlock_unlock(&nrdylock);
 
    spinlock_lock(&cpu->lock);
    if ((++cpu->nrdy) > avg) {
        /*
         * If there are idle halted CPU's, this will wake them up.
         */
        ipi_broadcast(VECTOR_WAKEUP_IPI);
    }  
    spinlock_unlock(&cpu->lock);
   
    cpu_priority_restore(pri);
}
 
thread_t *thread_create(void (* func)(void *), void *arg, task_t *task, int flags)
{
    thread_t *t;
    __address frame_ks, frame_us = NULL;
 
    t = (thread_t *) malloc(sizeof(thread_t));
    if (t) {
        pri_t pri;
   
        spinlock_initialize(&t->lock);
   
        frame_ks = frame_alloc(FRAME_KA);
        if (THREAD_USER_STACK & flags) {
            frame_us = frame_alloc(0);
        }
 
        pri = cpu_priority_high();
        spinlock_lock(&tidlock);
        t->tid = ++last_tid;
        spinlock_unlock(&tidlock);
        cpu_priority_restore(pri);
 
        memsetb(frame_ks, THREAD_STACK_SIZE, 0);
        link_initialize(&t->rq_link);
        link_initialize(&t->wq_link);
        link_initialize(&t->th_link);
        link_initialize(&t->threads_link);
        t->kstack = (__u8 *) frame_ks;
        t->ustack = (__u8 *) frame_us;
       
       
        context_save(&t->saved_context);
        t->saved_context.pc = FADDR(cushion);
        t->saved_context.sp = (__address) &t->kstack[THREAD_STACK_SIZE-8];
 
        pri = cpu_priority_high();
        t->saved_context.pri = cpu_priority_read();
        cpu_priority_restore(pri);
       
        t->thread_code = func;
        t->thread_arg = arg;
        t->ticks = -1;
        t->pri = -1;        /* start in rq[0] */
        t->cpu = NULL;
        t->flags = 0;
        t->state = Entering;
        t->call_me = NULL;
        t->call_me_with = NULL;
       
        timeout_initialize(&t->sleep_timeout);
        t->sleep_queue = NULL;
        t->timeout_pending = 0;
       
        t->rwlock_holder_type = RWLOCK_NONE;
       
        t->task = task;
       
        t->fpu_context_exists=0;
        t->fpu_context_engaged=0;
       
        /*
         * Register this thread in the system-wide list.
         */
        pri = cpu_priority_high();     
        spinlock_lock(&threads_lock);
        list_append(&t->threads_link, &threads_head);
        spinlock_unlock(&threads_lock);
 
        /*
         * Attach to the containing task.
         */
        spinlock_lock(&task->lock);
        list_append(&t->th_link, &task->th_head);
        spinlock_unlock(&task->lock);
 
        cpu_priority_restore(pri);
    }
 
    return t;
}
 
void thread_exit(void)
{
    pri_t pri;
 
restart:
    pri = cpu_priority_high();
    spinlock_lock(&THREAD->lock);
    if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */
        spinlock_unlock(&THREAD->lock);
        cpu_priority_restore(pri);
        goto restart;
    }
    THREAD->state = Exiting;
    spinlock_unlock(&THREAD->lock);
    scheduler();
}
 
void thread_sleep(__u32 sec)
{
        thread_usleep(sec*1000000);
}
   
/*
 * Suspend execution of current thread for usec microseconds.
 */
void thread_usleep(__u32 usec)
{
    waitq_t wq;
                 
    waitq_initialize(&wq);
 
    (void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING);
}
 
void thread_register_call_me(void (* call_me)(void *), void *call_me_with)
{
    pri_t pri;
   
    pri = cpu_priority_high();
    spinlock_lock(&THREAD->lock);
    THREAD->call_me = call_me;
    THREAD->call_me_with = call_me_with;
    spinlock_unlock(&THREAD->lock);
    cpu_priority_restore(pri);
}
 

Rev 73	Rev 76
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	#include <proc/scheduler.h>	29	#include <proc/scheduler.h>
30	#include <proc/thread.h>	30	#include <proc/thread.h>
31	#include <proc/task.h>	31	#include <proc/task.h>
32	#include <mm/heap.h>	32	#include <mm/heap.h>
33	#include <mm/frame.h>	33	#include <mm/frame.h>
34	#include <mm/page.h>	34	#include <mm/page.h>
35	#include <arch/asm.h>	35	#include <arch/asm.h>
36	#include <arch.h>	36	#include <arch.h>
37	#include <synch/synch.h>	37	#include <synch/synch.h>
38	#include <synch/spinlock.h>	38	#include <synch/spinlock.h>
39	#include <synch/waitq.h>	39	#include <synch/waitq.h>
40	#include <synch/rwlock.h>	40	#include <synch/rwlock.h>
41	#include <cpu.h>	41	#include <cpu.h>
42	#include <func.h>	42	#include <func.h>
43	#include <context.h>	43	#include <context.h>
44	#include <list.h>	44	#include <list.h>
45	#include <typedefs.h>	45	#include <typedefs.h>
46	#include <time/clock.h>	46	#include <time/clock.h>
47	#include <list.h>	47	#include <list.h>
48	#include <config.h>	48	#include <config.h>
49	#include <arch/interrupt.h>	49	#include <arch/interrupt.h>
50	#include <smp/ipi.h>	50	#include <smp/ipi.h>
-		51	#include <arch/faddr.h>
51		52
52	char *thread_states[] = {"Invalid", "Running", "Sleeping", "Ready", "Entering", "Exiting"};	53	char *thread_states[] = {"Invalid", "Running", "Sleeping", "Ready", "Entering", "Exiting"};
53		54
54	spinlock_t threads_lock;	55	spinlock_t threads_lock;
55	link_t threads_head;	56	link_t threads_head;
56		57
57	static spinlock_t tidlock;	58	static spinlock_t tidlock;
58	__u32 last_tid = 0;	59	__u32 last_tid = 0;
59		60
60	/*	61	/*
61	* cushion() is provided to ensure that every thread	62	* cushion() is provided to ensure that every thread
62	* makes a call to thread_exit() when its implementing	63	* makes a call to thread_exit() when its implementing
63	* function returns.	64	* function returns.
64	*	65	*
65	* cpu_priority_high()'d	66	* cpu_priority_high()'d
66	*/	67	*/
67	void cushion(void)	68	void cushion(void)
68	{	69	{
69	void (f)(void ) = THREAD->thread_code;	70	void (f)(void ) = THREAD->thread_code;
70	void *arg = THREAD->thread_arg;	71	void *arg = THREAD->thread_arg;
71		72
72	before_thread_runs();	73	before_thread_runs();
73		74
74	/* this is where each thread wakes up after its creation */	75	/* this is where each thread wakes up after its creation */
75	spinlock_unlock(&THREAD->lock);	76	spinlock_unlock(&THREAD->lock);
76	cpu_priority_low();	77	cpu_priority_low();
77		78
78	f(arg);	79	f(arg);
79	thread_exit();	80	thread_exit();
80	/* not reached */	81	/* not reached */
81	}	82	}
82		83
83	void thread_init(void)	84	void thread_init(void)
84	{	85	{
85	THREAD = NULL;	86	THREAD = NULL;
86	nrdy = 0;	87	nrdy = 0;
87	spinlock_initialize(&threads_lock);	88	spinlock_initialize(&threads_lock);
88	list_initialize(&threads_head);	89	list_initialize(&threads_head);
89	}	90	}
90		91
91	void thread_ready(thread_t *t)	92	void thread_ready(thread_t *t)
92	{	93	{
93	cpu_t *cpu;	94	cpu_t *cpu;
94	runq_t *r;	95	runq_t *r;
95	pri_t pri;	96	pri_t pri;
96	int i, avg, send_ipi = 0;	97	int i, avg, send_ipi = 0;
97		98
98	pri = cpu_priority_high();	99	pri = cpu_priority_high();
99		100
100	spinlock_lock(&t->lock);	101	spinlock_lock(&t->lock);
101		102
102	i = (t->pri < RQ_COUNT -1) ? ++t->pri : t->pri;	103	i = (t->pri < RQ_COUNT -1) ? ++t->pri : t->pri;
103		104
104	cpu = CPU;	105	cpu = CPU;
105	if (t->flags & X_WIRED) {	106	if (t->flags & X_WIRED) {
106	cpu = t->cpu;	107	cpu = t->cpu;
107	}	108	}
108	spinlock_unlock(&t->lock);	109	spinlock_unlock(&t->lock);
109		110
110	/*	111	/*
111	* Append t to respective ready queue on respective processor.	112	* Append t to respective ready queue on respective processor.
112	*/	113	*/
113	r = &cpu->rq[i];	114	r = &cpu->rq[i];
114	spinlock_lock(&r->lock);	115	spinlock_lock(&r->lock);
115	list_append(&t->rq_link, &r->rq_head);	116	list_append(&t->rq_link, &r->rq_head);
116	r->n++;	117	r->n++;
117	spinlock_unlock(&r->lock);	118	spinlock_unlock(&r->lock);
118		119
119	spinlock_lock(&nrdylock);	120	spinlock_lock(&nrdylock);
120	avg = ++nrdy / config.cpu_active;	121	avg = ++nrdy / config.cpu_active;
121	spinlock_unlock(&nrdylock);	122	spinlock_unlock(&nrdylock);
122		123
123	spinlock_lock(&cpu->lock);	124	spinlock_lock(&cpu->lock);
124	if ((++cpu->nrdy) > avg) {	125	if ((++cpu->nrdy) > avg) {
125	/*	126	/*
126	* If there are idle halted CPU's, this will wake them up.	127	* If there are idle halted CPU's, this will wake them up.
127	*/	128	*/
128	ipi_broadcast(VECTOR_WAKEUP_IPI);	129	ipi_broadcast(VECTOR_WAKEUP_IPI);
129	}	130	}
130	spinlock_unlock(&cpu->lock);	131	spinlock_unlock(&cpu->lock);
131		132
132	cpu_priority_restore(pri);	133	cpu_priority_restore(pri);
133	}	134	}
134		135
135	thread_t thread_create(void ( func)(void ), void arg, task_t *task, int flags)	136	thread_t thread_create(void ( func)(void ), void arg, task_t *task, int flags)
136	{	137	{
137	thread_t *t;	138	thread_t *t;
138	__address frame_ks, frame_us = NULL;	139	__address frame_ks, frame_us = NULL;
139		140
140	t = (thread_t *) malloc(sizeof(thread_t));	141	t = (thread_t *) malloc(sizeof(thread_t));
141	if (t) {	142	if (t) {
142	pri_t pri;	143	pri_t pri;
143		144
144	spinlock_initialize(&t->lock);	145	spinlock_initialize(&t->lock);
145		146
146	frame_ks = frame_alloc(FRAME_KA);	147	frame_ks = frame_alloc(FRAME_KA);
147	if (THREAD_USER_STACK & flags) {	148	if (THREAD_USER_STACK & flags) {
148	frame_us = frame_alloc(0);	149	frame_us = frame_alloc(0);
149	}	150	}
150		151
151	pri = cpu_priority_high();	152	pri = cpu_priority_high();
152	spinlock_lock(&tidlock);	153	spinlock_lock(&tidlock);
153	t->tid = ++last_tid;	154	t->tid = ++last_tid;
154	spinlock_unlock(&tidlock);	155	spinlock_unlock(&tidlock);
155	cpu_priority_restore(pri);	156	cpu_priority_restore(pri);
156		157
157	memsetb(frame_ks, THREAD_STACK_SIZE, 0);	158	memsetb(frame_ks, THREAD_STACK_SIZE, 0);
158	link_initialize(&t->rq_link);	159	link_initialize(&t->rq_link);
159	link_initialize(&t->wq_link);	160	link_initialize(&t->wq_link);
160	link_initialize(&t->th_link);	161	link_initialize(&t->th_link);
161	link_initialize(&t->threads_link);	162	link_initialize(&t->threads_link);
162	t->kstack = (__u8 *) frame_ks;	163	t->kstack = (__u8 *) frame_ks;
163	t->ustack = (__u8 *) frame_us;	164	t->ustack = (__u8 *) frame_us;
164		165
165		166
166	context_save(&t->saved_context);	167	context_save(&t->saved_context);
167	t->saved_context.pc = (__address) cushion;	168	t->saved_context.pc = FADDR(cushion);
168	t->saved_context.sp = (__address) &t->kstack[THREAD_STACK_SIZE-8];	169	t->saved_context.sp = (__address) &t->kstack[THREAD_STACK_SIZE-8];
169		170
170	pri = cpu_priority_high();	171	pri = cpu_priority_high();
171	t->saved_context.pri = cpu_priority_read();	172	t->saved_context.pri = cpu_priority_read();
172	cpu_priority_restore(pri);	173	cpu_priority_restore(pri);
173		174
174	t->thread_code = func;	175	t->thread_code = func;
175	t->thread_arg = arg;	176	t->thread_arg = arg;
176	t->ticks = -1;	177	t->ticks = -1;
177	t->pri = -1; /* start in rq[0] */	178	t->pri = -1; /* start in rq[0] */
178	t->cpu = NULL;	179	t->cpu = NULL;
179	t->flags = 0;	180	t->flags = 0;
180	t->state = Entering;	181	t->state = Entering;
181	t->call_me = NULL;	182	t->call_me = NULL;
182	t->call_me_with = NULL;	183	t->call_me_with = NULL;
183		184
184	timeout_initialize(&t->sleep_timeout);	185	timeout_initialize(&t->sleep_timeout);
185	t->sleep_queue = NULL;	186	t->sleep_queue = NULL;
186	t->timeout_pending = 0;	187	t->timeout_pending = 0;
187		188
188	t->rwlock_holder_type = RWLOCK_NONE;	189	t->rwlock_holder_type = RWLOCK_NONE;
189		190
190	t->task = task;	191	t->task = task;
191		192
192	t->fpu_context_exists=0;	193	t->fpu_context_exists=0;
193	t->fpu_context_engaged=0;	194	t->fpu_context_engaged=0;
194		195
195	/*	196	/*
196	* Register this thread in the system-wide list.	197	* Register this thread in the system-wide list.
197	*/	198	*/
198	pri = cpu_priority_high();	199	pri = cpu_priority_high();
199	spinlock_lock(&threads_lock);	200	spinlock_lock(&threads_lock);
200	list_append(&t->threads_link, &threads_head);	201	list_append(&t->threads_link, &threads_head);
201	spinlock_unlock(&threads_lock);	202	spinlock_unlock(&threads_lock);
202		203
203	/*	204	/*
204	* Attach to the containing task.	205	* Attach to the containing task.
205	*/	206	*/
206	spinlock_lock(&task->lock);	207	spinlock_lock(&task->lock);
207	list_append(&t->th_link, &task->th_head);	208	list_append(&t->th_link, &task->th_head);
208	spinlock_unlock(&task->lock);	209	spinlock_unlock(&task->lock);
209		210
210	cpu_priority_restore(pri);	211	cpu_priority_restore(pri);
211	}	212	}
212		213
213	return t;	214	return t;
214	}	215	}
215		216
216	void thread_exit(void)	217	void thread_exit(void)
217	{	218	{
218	pri_t pri;	219	pri_t pri;
219		220
220	restart:	221	restart:
221	pri = cpu_priority_high();	222	pri = cpu_priority_high();
222	spinlock_lock(&THREAD->lock);	223	spinlock_lock(&THREAD->lock);
223	if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */	224	if (THREAD->timeout_pending) { /* busy waiting for timeouts in progress */
224	spinlock_unlock(&THREAD->lock);	225	spinlock_unlock(&THREAD->lock);
225	cpu_priority_restore(pri);	226	cpu_priority_restore(pri);
226	goto restart;	227	goto restart;
227	}	228	}
228	THREAD->state = Exiting;	229	THREAD->state = Exiting;
229	spinlock_unlock(&THREAD->lock);	230	spinlock_unlock(&THREAD->lock);
230	scheduler();	231	scheduler();
231	}	232	}
232		233
233	void thread_sleep(__u32 sec)	234	void thread_sleep(__u32 sec)
234	{	235	{
235	thread_usleep(sec*1000000);	236	thread_usleep(sec*1000000);
236	}	237	}
237		238
238	/*	239	/*
239	* Suspend execution of current thread for usec microseconds.	240	* Suspend execution of current thread for usec microseconds.
240	*/	241	*/
241	void thread_usleep(__u32 usec)	242	void thread_usleep(__u32 usec)
242	{	243	{
243	waitq_t wq;	244	waitq_t wq;
244		245
245	waitq_initialize(&wq);	246	waitq_initialize(&wq);
246		247
247	(void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING);	248	(void) waitq_sleep_timeout(&wq, usec, SYNCH_NON_BLOCKING);
248	}	249	}
249		250
250	void thread_register_call_me(void (* call_me)(void ), void call_me_with)	251	void thread_register_call_me(void (* call_me)(void ), void call_me_with)
251	{	252	{
252	pri_t pri;	253	pri_t pri;
253		254
254	pri = cpu_priority_high();	255	pri = cpu_priority_high();
255	spinlock_lock(&THREAD->lock);	256	spinlock_lock(&THREAD->lock);
256	THREAD->call_me = call_me;	257	THREAD->call_me = call_me;
257	THREAD->call_me_with = call_me_with;	258	THREAD->call_me_with = call_me_with;
258	spinlock_unlock(&THREAD->lock);	259	spinlock_unlock(&THREAD->lock);
259	cpu_priority_restore(pri);	260	cpu_priority_restore(pri);
260	}	261	}
261		262

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/proc/thread.c @ 3783 – Rev 73 → 76