/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2001 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
#include <kern/queue.h>
#include <sys/lock.h>
#include <kern/thread.h>
+#include <kern/sched_prim.h>
#include <kern/ast.h>
#include <kern/cpu_number.h>
#include <kern/task.h>
#include <mach/time_value.h>
-_sleep_continue()
+#if KTRACE
+#include <sys/uio.h>
+#include <sys/ktrace.h>
+#endif
+
+static void
+_sleep_continue(void)
{
register struct proc *p;
- register thread_t thread = current_thread();
- thread_act_t th_act;
+ register thread_t self = current_act();
struct uthread * ut;
int sig, catch;
int error = 0;
- th_act = current_act();
- ut = get_bsdthread_info(th_act);
+ ut = get_bsdthread_info(self);
catch = ut->uu_pri & PCATCH;
p = current_proc();
-#if FIXME /* [ */
- thread->wait_mesg = NULL;
-#endif /* FIXME ] */
- switch (get_thread_waitresult(thread)) {
+ switch (get_thread_waitresult(self)) {
case THREAD_TIMED_OUT:
error = EWOULDBLOCK;
break;
/* else fall through */
case THREAD_INTERRUPTED:
if (catch) {
- unix_master();
- if (thread_should_abort(current_thread())) {
+ if (thread_should_abort(self)) {
error = EINTR;
} else if (SHOULDissignal(p,ut)) {
if (sig = CURSIG(p)) {
else
error = ERESTART;
}
- if (thread_should_abort(current_thread())) {
+ if (thread_should_abort(self)) {
error = EINTR;
}
}
- unix_release();
} else
error = EINTR;
break;
}
- if ((error == EINTR) || (error == ERESTART)) {
-#ifdef BSD_USE_APC
- thread_apc_set(th_act, bsd_ast);
-#else
- thread_ast_set(th_act, AST_BSD);
- ast_on(AST_BSD);
-#endif
- }
+ if (error == EINTR || error == ERESTART)
+ act_set_astbsd(self);
+
if (ut->uu_timo)
thread_cancel_timer();
-#if 0
- /* We should never get here without funnel, so we should not grab again */
- thread_funnel_set(kernel_flock, TRUE);
-#endif /* 0 */
+#if KTRACE
+ if (KTRPOINT(p, KTR_CSW))
+ ktrcsw(p->p_tracep, 0, 0, -1);
+#endif
+
unix_syscall_return((*ut->uu_continuation)(error));
}
* sleeping has gone away.
*/
-#if FIXME
-static __inline__
-#endif
-int
-_sleep(chan, pri, wmsg, timo, continuation)
- caddr_t chan;
- int pri;
- char *wmsg;
- int timo;
- int (*continuation)();
+static int
+_sleep(
+ caddr_t chan,
+ int pri,
+ char *wmsg,
+ u_int64_t abstime,
+ int (*continuation)(int))
{
register struct proc *p;
- register thread_t thread = current_thread();
- thread_act_t th_act;
+ register thread_t self = current_act();
struct uthread * ut;
int sig, catch = pri & PCATCH;
int sigttblock = pri & PTTYBLOCK;
+ int wait_result;
int error = 0;
spl_t s;
s = splhigh();
- th_act = current_act();
- ut = get_bsdthread_info(th_act);
+ ut = get_bsdthread_info(self);
p = current_proc();
#if KTRACE
if (KTRPOINT(p, KTR_CSW))
- ktrcsw(p->p_tracep, 1, 0);
+ ktrcsw(p->p_tracep, 1, 0, -1);
#endif
p->p_priority = pri & PRIMASK;
- if (chan)
- assert_wait(chan, (catch) ? THREAD_ABORTSAFE : THREAD_UNINT);
-
- if (timo)
- thread_set_timer(timo, NSEC_PER_SEC / hz);
+ if (chan != NULL)
+ assert_wait_prim(chan, NULL, abstime,
+ (catch) ? THREAD_ABORTSAFE : THREAD_UNINT);
+ else
+ if (abstime != 0)
+ thread_set_timer_deadline(abstime);
+
/*
* We start our timeout
* before calling CURSIG, as we could stop there, and a wakeup
* stopped, p->p_wchan will be 0 upon return from CURSIG.
*/
if (catch) {
- unix_master();
if (SHOULDissignal(p,ut)) {
if (sig = CURSIG(p)) {
- clear_wait(thread, THREAD_INTERRUPTED);
+ if (clear_wait(self, THREAD_INTERRUPTED) == KERN_FAILURE)
+ goto block;
/* if SIGTTOU or SIGTTIN then block till SIGCONT */
if (sigttblock && ((sig == SIGTTOU) || (sig == SIGTTIN))) {
p->p_flag |= P_TTYSLEEP;
/* reset signal bits */
- clear_sigbits(p, sig);
+ clear_procsiglist(p, sig);
assert_wait(&p->p_siglist, THREAD_ABORTSAFE);
/* assert wait can block and SIGCONT should be checked */
if (p->p_flag & P_TTYSLEEP)
- thread_block(0);
+ thread_block(THREAD_CONTINUE_NULL);
/* return with success */
error = 0;
goto out;
error = EINTR;
else
error = ERESTART;
- unix_release();
goto out;
}
}
- if (thread_should_abort(current_thread())) {
- clear_wait(thread, THREAD_INTERRUPTED);
+ if (thread_should_abort(self)) {
+ if (clear_wait(self, THREAD_INTERRUPTED) == KERN_FAILURE)
+ goto block;
error = EINTR;
- unix_release();
goto out;
}
- if (get_thread_waitevent(thread) == 0) { /*already happened */
- unix_release();
+ if (get_thread_waitresult(self) != THREAD_WAITING) {
+ /*already happened */
goto out;
}
- unix_release();
}
-#if FIXME /* [ */
- thread->wait_mesg = wmsg;
-#endif /* FIXME ] */
+block:
+
splx(s);
p->p_stats->p_ru.ru_nvcsw++;
- if (continuation != (int (*)()) 0 ) {
+ if ((thread_continue_t)continuation != THREAD_CONTINUE_NULL ) {
ut->uu_continuation = continuation;
ut->uu_pri = pri;
- ut->uu_timo = timo;
- thread_block(_sleep_continue);
+ ut->uu_timo = abstime? 1: 0;
+ (void) thread_block(_sleep_continue);
/* NOTREACHED */
}
- thread_block(0);
+ wait_result = thread_block(THREAD_CONTINUE_NULL);
-#if FIXME /* [ */
- thread->wait_mesg = NULL;
-#endif /* FIXME ] */
- switch (get_thread_waitresult(thread)) {
+ switch (wait_result) {
case THREAD_TIMED_OUT:
error = EWOULDBLOCK;
break;
/* else fall through */
case THREAD_INTERRUPTED:
if (catch) {
- unix_master();
- if (thread_should_abort(current_thread())) {
+ if (thread_should_abort(self)) {
error = EINTR;
} else if (SHOULDissignal(p,ut)) {
if (sig = CURSIG(p)) {
else
error = ERESTART;
}
- if (thread_should_abort(current_thread())) {
+ if (thread_should_abort(self)) {
error = EINTR;
}
}
- unix_release();
} else
error = EINTR;
break;
}
out:
- if ((error == EINTR) || (error == ERESTART)) {
-#ifdef BSD_USE_APC
- thread_apc_set(th_act, bsd_ast);
-#else
- thread_ast_set(th_act, AST_BSD);
- ast_on(AST_BSD);
-#endif
- }
- if (timo)
+ if (error == EINTR || error == ERESTART)
+ act_set_astbsd(self);
+ if (abstime)
thread_cancel_timer();
(void) splx(s);
+#if KTRACE
+ if (KTRPOINT(p, KTR_CSW))
+ ktrcsw(p->p_tracep, 0, 0, -1);
+#endif
return (error);
}
-int sleep(chan, pri)
- void *chan;
- int pri;
+int
+sleep(
+ void *chan,
+ int pri)
{
+ return _sleep((caddr_t)chan, pri, (char *)NULL, 0, (int (*)(int))0);
+}
- return (_sleep((caddr_t)chan, pri, (char *)NULL, 0, (void (*)())0 ));
-
+int
+tsleep(
+ void *chan,
+ int pri,
+ char *wmsg,
+ int timo)
+{
+ u_int64_t abstime = 0;
+
+ if (timo)
+ clock_interval_to_deadline(timo, NSEC_PER_SEC / hz, &abstime);
+ return _sleep((caddr_t)chan, pri, wmsg, abstime, (int (*)(int))0);
}
-int tsleep(chan, pri, wmsg, timo)
- void *chan;
- int pri;
- char * wmsg;
- int timo;
+int
+tsleep0(
+ void *chan,
+ int pri,
+ char *wmsg,
+ int timo,
+ int (*continuation)(int))
{
- return(_sleep((caddr_t)chan, pri, wmsg, timo, (void (*)())0 ));
+ u_int64_t abstime = 0;
+
+ if (timo)
+ clock_interval_to_deadline(timo, NSEC_PER_SEC / hz, &abstime);
+ return _sleep((caddr_t)chan, pri, wmsg, abstime, continuation);
}
-int tsleep0(chan, pri, wmsg, timo, continuation)
- void *chan;
- int pri;
- char * wmsg;
- int timo;
- int (*continuation)();
+int
+tsleep1(
+ void *chan,
+ int pri,
+ char *wmsg,
+ u_int64_t abstime,
+ int (*continuation)(int))
{
-#if defined (__i386__)
- return(_sleep((caddr_t)chan, pri, wmsg, timo, (void (*)())0 ));
-#else
- return(_sleep((caddr_t)chan, pri, wmsg, timo, continuation));
-#endif
+ return _sleep((caddr_t)chan, pri, wmsg, abstime, continuation);
}
/*
wakeup(chan)
register void *chan;
{
- thread_wakeup_prim((caddr_t)chan,FALSE, THREAD_AWAKENED);
+ thread_wakeup_prim((caddr_t)chan, FALSE, THREAD_AWAKENED);
}
/*
* Be very sure that the first process is really
* the right one to wakeup.
*/
+void
wakeup_one(chan)
register caddr_t chan;
{
resetpriority(p)
register struct proc *p;
{
- int newpri;
-#if FIXME
- if (p->p_nice < 0)
- newpri = BASEPRI_USER +
- (p->p_nice * (MAXPRI_USER - BASEPRI_USER)) / PRIO_MIN;
- else
- newpri = BASEPRI_USER -
- (p->p_nice * BASEPRI_USER) / PRIO_MAX;
-
- (void)task_priority(p->task, newpri, TRUE);
-#endif /* FIXME */
+ (void)task_importance(p->task, -p->p_nice);
}
+struct loadavg averunnable =
+ { {0, 0, 0}, FSCALE }; /* load average, of runnable procs */
+/*
+ * Constants for averages over 1, 5, and 15 minutes
+ * when sampling at 5 second intervals.
+ */
+static fixpt_t cexp[3] = {
+ (fixpt_t)(0.9200444146293232 * FSCALE), /* exp(-1/12) */
+ (fixpt_t)(0.9834714538216174 * FSCALE), /* exp(-1/60) */
+ (fixpt_t)(0.9944598480048967 * FSCALE), /* exp(-1/180) */
+};
+
+void
+compute_averunnable(
+ register int nrun)
+{
+ register int i;
+ struct loadavg *avg = &averunnable;
+
+ for (i = 0; i < 3; i++)
+ avg->ldavg[i] = (cexp[i] * avg->ldavg[i] +
+ nrun * FSCALE * (FSCALE - cexp[i])) >> FSHIFT;
+}
projects / apple / xnu.git / blobdiff