/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_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. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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@
*/
*/
#include <cputypes.h>
-#include <cpus.h>
#include <platforms.h>
#include <kern/ast.h>
#include <kern/queue.h>
#include <kern/sched_prim.h>
#include <kern/thread.h>
-#include <kern/thread_act.h>
-#include <kern/thread_swap.h>
#include <kern/processor.h>
#include <kern/spl.h>
+#include <kern/wait_queue.h>
#include <mach/policy.h>
-volatile ast_t need_ast[NCPUS];
+#ifdef __ppc__
+#include <ppc/trap.h> // for CHUD AST hook
+#endif
void
ast_init(void)
{
-#ifndef MACHINE_AST
- register int i;
-
- for (i=0; i<NCPUS; i++) {
- need_ast[i] = AST_NONE;
- }
-#endif /* MACHINE_AST */
}
/*
*/
void
ast_taken(
- ast_t reasons,
- boolean_t enable
+ ast_t reasons,
+ boolean_t enable
)
{
- register thread_t self = current_thread();
- register int mycpu = cpu_number();
- boolean_t preempt_trap = (reasons == AST_PREEMPTION);
+ boolean_t preempt_trap = (reasons == AST_PREEMPTION);
+ ast_t *myast = ast_pending();
+ thread_t thread = current_thread();
+
+#ifdef __ppc__
+ /*
+ * CHUD hook - all threads including idle processor threads
+ */
+ if(perfASTHook) {
+ if(*myast & AST_PPC_CHUD_ALL) {
+ perfASTHook(0, NULL, 0, 0);
+
+ if(*myast == AST_NONE) {
+ return; // nothing left to do
+ }
+ }
+ } else {
+ *myast &= ~AST_PPC_CHUD_ALL;
+ }
+#endif
- reasons &= need_ast[mycpu];
- need_ast[mycpu] &= ~reasons;
+ reasons &= *myast;
+ *myast &= ~reasons;
/*
* Handle ASTs for all threads
* except idle processor threads.
*/
- if (!(self->state & TH_IDLE)) {
+ if (!(thread->state & TH_IDLE)) {
/*
* Check for urgent preemption.
*/
if ( (reasons & AST_URGENT) &&
- wait_queue_assert_possible(self) ) {
+ wait_queue_assert_possible(thread) ) {
if (reasons & AST_PREEMPT) {
counter(c_ast_taken_block++);
- thread_block_reason(THREAD_CONTINUE_NULL,
+ thread_block_reason(THREAD_CONTINUE_NULL, NULL,
AST_PREEMPT | AST_URGENT);
}
* Handle BSD hook.
*/
if (reasons & AST_BSD) {
- extern void bsd_ast(thread_act_t act);
- thread_act_t act = self->top_act;
-
- thread_ast_clear(act, AST_BSD);
- bsd_ast(act);
+ thread_ast_clear(thread, AST_BSD);
+ bsd_ast(thread);
}
#endif
if (reasons & AST_PREEMPT) {
processor_t myprocessor = current_processor();
- if (csw_needed(self, myprocessor))
+ if (csw_needed(thread, myprocessor))
reasons = AST_PREEMPT;
else
reasons = AST_NONE;
}
if ( (reasons & AST_PREEMPT) &&
- wait_queue_assert_possible(self) ) {
+ wait_queue_assert_possible(thread) ) {
counter(c_ast_taken_block++);
- thread_block_reason(thread_exception_return, AST_PREEMPT);
+ thread_block_reason((thread_continue_t)thread_exception_return, NULL, AST_PREEMPT);
}
}
}
ast_check(
processor_t processor)
{
- register thread_t self = processor->active_thread;
+ register thread_t thread = processor->active_thread;
- processor->current_pri = self->sched_pri;
- if (processor->state == PROCESSOR_RUNNING) {
+ processor->current_pri = thread->sched_pri;
+ if ( processor->state == PROCESSOR_RUNNING ||
+ processor->state == PROCESSOR_SHUTDOWN ) {
register ast_t preempt;
-processor_running:
/*
* Propagate thread ast to processor.
*/
- ast_propagate(self->top_act->ast);
+ ast_propagate(thread->ast);
/*
* Context switch check.
*/
- if ((preempt = csw_check(self, processor)) != AST_NONE)
+ if ((preempt = csw_check(thread, processor)) != AST_NONE)
ast_on(preempt);
}
- else
- if ( processor->state == PROCESSOR_DISPATCHING ||
- processor->state == PROCESSOR_IDLE ) {
- return;
- }
- else
- if (processor->state == PROCESSOR_SHUTDOWN)
- goto processor_running;
}
projects / apple / xnu.git / blobdiff