/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * HISTORY
- *
- * 15 October 2000 (debo)
- * Created.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
+#include <mach/mach_types.h>
+#include <mach/thread_act_server.h>
+
+#include <kern/kern_types.h>
+#include <kern/processor.h>
#include <kern/thread.h>
+#include <kern/affinity.h>
static void
thread_recompute_priority(
thread_t thread);
+
+
kern_return_t
thread_policy_set(
- thread_act_t act,
+ thread_t thread,
thread_policy_flavor_t flavor,
thread_policy_t policy_info,
mach_msg_type_number_t count)
{
- kern_return_t result = KERN_SUCCESS;
- thread_t thread;
- spl_t s;
- if (act == THR_ACT_NULL)
+ if (thread == THREAD_NULL)
return (KERN_INVALID_ARGUMENT);
- thread = act_lock_thread(act);
- if (!act->active) {
- act_unlock_thread(act);
+ if (thread->static_param)
+ return (KERN_SUCCESS);
- return (KERN_TERMINATED);
- }
+ return (thread_policy_set_internal(thread, flavor, policy_info, count));
+}
- assert(thread != THREAD_NULL);
+kern_return_t
+thread_policy_set_internal(
+ thread_t thread,
+ thread_policy_flavor_t flavor,
+ thread_policy_t policy_info,
+ mach_msg_type_number_t count)
+{
+ kern_return_t result = KERN_SUCCESS;
+ spl_t s;
+ thread_mtx_lock(thread);
+ if (!thread->active) {
+ thread_mtx_unlock(thread);
+
+ return (KERN_TERMINATED);
+ }
switch (flavor) {
case THREAD_EXTENDED_POLICY:
thread_lock(thread);
if (!(thread->sched_mode & TH_MODE_FAILSAFE)) {
+ integer_t oldmode = (thread->sched_mode & TH_MODE_TIMESHARE);
+
thread->sched_mode &= ~TH_MODE_REALTIME;
- if (timeshare)
+ if (timeshare && !oldmode) {
thread->sched_mode |= TH_MODE_TIMESHARE;
+
+ if ((thread->state & (TH_RUN|TH_IDLE)) == TH_RUN)
+ sched_share_incr();
+ }
else
+ if (!timeshare && oldmode) {
thread->sched_mode &= ~TH_MODE_TIMESHARE;
+ if ((thread->state & (TH_RUN|TH_IDLE)) == TH_RUN)
+ sched_share_decr();
+ }
+
thread_recompute_priority(thread);
}
else {
}
info = (thread_time_constraint_policy_t)policy_info;
- if ( info->computation > max_rt_quantum ||
+ if ( info->constraint < info->computation ||
+ info->computation > max_rt_quantum ||
info->computation < min_rt_quantum ) {
result = KERN_INVALID_ARGUMENT;
break;
thread->realtime.preemptible = info->preemptible;
if (!(thread->sched_mode & TH_MODE_FAILSAFE)) {
- thread->sched_mode &= ~TH_MODE_TIMESHARE;
+ if (thread->sched_mode & TH_MODE_TIMESHARE) {
+ thread->sched_mode &= ~TH_MODE_TIMESHARE;
+
+ if ((thread->state & (TH_RUN|TH_IDLE)) == TH_RUN)
+ sched_share_decr();
+ }
thread->sched_mode |= TH_MODE_REALTIME;
thread_recompute_priority(thread);
}
result = KERN_INVALID_ARGUMENT;
break;
}
-
info = (thread_precedence_policy_t)policy_info;
s = splsched();
break;
}
+ case THREAD_AFFINITY_POLICY:
+ {
+ thread_affinity_policy_t info;
+
+ if (!thread_affinity_is_supported()) {
+ result = KERN_NOT_SUPPORTED;
+ break;
+ }
+ if (count < THREAD_AFFINITY_POLICY_COUNT) {
+ result = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ info = (thread_affinity_policy_t) policy_info;
+ /*
+ * Unlock the thread mutex here and
+ * return directly after calling thread_affinity_set().
+ * This is necessary for correct lock ordering because
+ * thread_affinity_set() takes the task lock.
+ */
+ thread_mtx_unlock(thread);
+ return thread_affinity_set(thread, info->affinity_tag);
+ }
default:
result = KERN_INVALID_ARGUMENT;
break;
}
- act_unlock_thread(act);
-
+ thread_mtx_unlock(thread);
return (result);
}
integer_t priority;
if (thread->sched_mode & TH_MODE_REALTIME)
- priority = BASEPRI_REALTIME;
+ priority = BASEPRI_RTQUEUES;
else {
if (thread->importance > MAXPRI)
priority = MAXPRI;
splx(s);
}
+void
+thread_policy_reset(
+ thread_t thread)
+{
+ spl_t s;
+
+ s = splsched();
+ thread_lock(thread);
+
+ if (!(thread->sched_mode & TH_MODE_FAILSAFE)) {
+ thread->sched_mode &= ~TH_MODE_REALTIME;
+
+ if (!(thread->sched_mode & TH_MODE_TIMESHARE)) {
+ thread->sched_mode |= TH_MODE_TIMESHARE;
+
+ if ((thread->state & (TH_RUN|TH_IDLE)) == TH_RUN)
+ sched_share_incr();
+ }
+ }
+ else {
+ thread->safe_mode = 0;
+ thread->sched_mode &= ~TH_MODE_FAILSAFE;
+ }
+
+ thread->importance = 0;
+
+ thread_recompute_priority(thread);
+
+ thread_unlock(thread);
+ splx(s);
+}
+
kern_return_t
thread_policy_get(
- thread_act_t act,
+ thread_t thread,
thread_policy_flavor_t flavor,
thread_policy_t policy_info,
mach_msg_type_number_t *count,
boolean_t *get_default)
{
kern_return_t result = KERN_SUCCESS;
- thread_t thread;
spl_t s;
- if (act == THR_ACT_NULL)
+ if (thread == THREAD_NULL)
return (KERN_INVALID_ARGUMENT);
- thread = act_lock_thread(act);
- if (!act->active) {
- act_unlock_thread(act);
+ thread_mtx_lock(thread);
+ if (!thread->active) {
+ thread_mtx_unlock(thread);
return (KERN_TERMINATED);
}
- assert(thread != THREAD_NULL);
-
switch (flavor) {
case THREAD_EXTENDED_POLICY:
break;
}
+ case THREAD_AFFINITY_POLICY:
+ {
+ thread_affinity_policy_t info;
+
+ if (!thread_affinity_is_supported()) {
+ result = KERN_NOT_SUPPORTED;
+ break;
+ }
+ if (*count < THREAD_AFFINITY_POLICY_COUNT) {
+ result = KERN_INVALID_ARGUMENT;
+ break;
+ }
+
+ info = (thread_affinity_policy_t)policy_info;
+
+ if (!(*get_default))
+ info->affinity_tag = thread_affinity_get(thread);
+ else
+ info->affinity_tag = THREAD_AFFINITY_TAG_NULL;
+
+ break;
+ }
+
default:
result = KERN_INVALID_ARGUMENT;
break;
}
- act_unlock_thread(act);
+ thread_mtx_unlock(thread);
return (result);
}
projects / apple / xnu.git / blobdiff