/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <mach/mach_types.h>
-#include <kern/queue.h>
-#include <kern/ast.h>
+
+#include <kern/kern_types.h>
+#include <kern/processor.h>
#include <kern/thread.h>
-#include <kern/thread_act.h>
#include <kern/task.h>
#include <kern/spl.h>
#include <kern/lock.h>
-#include <vm/vm_map.h>
-#include <vm/pmap.h>
+#include <kern/ast.h>
#include <ipc/ipc_port.h>
#include <ipc/ipc_object.h>
+#include <vm/vm_map.h>
+#include <vm/pmap.h>
+#include <vm/vm_protos.h> /* last */
#undef thread_should_halt
#undef ipc_port_release
-#undef thread_ast_set
-#undef thread_ast_clear
-
-decl_simple_lock_data(extern,reaper_lock)
-extern queue_head_t reaper_queue;
/* BSD KERN COMPONENT INTERFACE */
-vm_address_t bsd_init_task = 0;
+task_t bsd_init_task = TASK_NULL;
char init_task_failure_data[1024];
+extern unsigned int not_in_kdp; /* Skip acquiring locks if we're in kdp */
-thread_act_t get_firstthread(task_t);
-vm_map_t get_task_map(task_t);
-ipc_space_t get_task_ipcspace(task_t);
-boolean_t is_kerneltask(task_t);
-boolean_t is_thread_idle(thread_t);
-boolean_t is_thread_running(thread_t);
-thread_shuttle_t getshuttle_thread( thread_act_t);
-thread_act_t getact_thread( thread_shuttle_t);
-vm_offset_t get_map_min( vm_map_t);
-vm_offset_t get_map_max( vm_map_t);
+thread_t get_firstthread(task_t);
int get_task_userstop(task_t);
-int get_thread_userstop(thread_act_t);
-int inc_task_userstop(task_t);
-boolean_t thread_should_abort(thread_shuttle_t);
+int get_thread_userstop(thread_t);
+boolean_t thread_should_abort(thread_t);
boolean_t current_thread_aborted(void);
-void task_act_iterate_wth_args(task_t, void(*)(thread_act_t, void *), void *);
+void task_act_iterate_wth_args(task_t, void(*)(thread_t, void *), void *);
void ipc_port_release(ipc_port_t);
-void thread_ast_set(thread_act_t, ast_t);
-void thread_ast_clear(thread_act_t, ast_t);
boolean_t is_thread_active(thread_t);
-event_t get_thread_waitevent(thread_t);
-kern_return_t get_thread_waitresult(thread_t);
-vm_size_t get_vmmap_size(vm_map_t);
-int get_vmmap_entries(vm_map_t);
-int get_task_numacts(task_t);
-thread_act_t get_firstthread(task_t task);
-kern_return_t get_signalact(task_t , thread_act_t *, thread_t *, int);
-
-kern_return_t bsd_refvm_object(vm_object_t object);
-
+kern_return_t get_signalact(task_t , thread_t *, int);
+int get_vmsubmap_entries(vm_map_t, vm_object_offset_t, vm_object_offset_t);
/*
*
/*
*
*/
-void *get_bsdthread_info(thread_act_t th)
+void *get_bsdthread_info(thread_t th)
{
return(th->uthread);
}
* can't go away, so we make sure it is still active after
* retrieving the first thread for extra safety.
*/
-thread_act_t get_firstthread(task_t task)
+thread_t get_firstthread(task_t task)
{
- thread_act_t thr_act;
+ thread_t thread = (thread_t)queue_first(&task->threads);
+
+ if (queue_end(&task->threads, (queue_entry_t)thread))
+ thread = THREAD_NULL;
- thr_act = (thread_act_t)queue_first(&task->thr_acts);
- if (thr_act == (thread_act_t)&task->thr_acts)
- thr_act = THR_ACT_NULL;
if (!task->active)
- return(THR_ACT_NULL);
- return(thr_act);
+ return (THREAD_NULL);
+
+ return (thread);
}
-kern_return_t get_signalact(task_t task,thread_act_t * thact, thread_t * thshut, int setast)
+kern_return_t
+get_signalact(
+ task_t task,
+ thread_t *result_out,
+ int setast)
{
-
- thread_act_t inc;
- thread_act_t ninc;
- thread_act_t thr_act;
- thread_t th;
+ kern_return_t result = KERN_SUCCESS;
+ thread_t inc, thread = THREAD_NULL;
task_lock(task);
+
if (!task->active) {
task_unlock(task);
- return(KERN_FAILURE);
+
+ return (KERN_FAILURE);
}
- thr_act = THR_ACT_NULL;
- for (inc = (thread_act_t)queue_first(&task->thr_acts);
- inc != (thread_act_t)&task->thr_acts;
- inc = ninc) {
- th = act_lock_thread(inc);
- if ((inc->active) && ((th->state & TH_ABORT) != TH_ABORT)) {
- thr_act = inc;
- break;
+ for (inc = (thread_t)queue_first(&task->threads);
+ !queue_end(&task->threads, (queue_entry_t)inc); ) {
+ thread_mtx_lock(inc);
+ if (inc->active &&
+ (inc->state & (TH_ABORT|TH_ABORT_SAFELY)) != TH_ABORT) {
+ thread = inc;
+ break;
}
- act_unlock_thread(inc);
- ninc = (thread_act_t)queue_next(&inc->thr_acts);
- }
-out:
- if (thact)
- *thact = thr_act;
-
- if (thshut)
- *thshut = thr_act? thr_act->thread: THREAD_NULL ;
- if (thr_act) {
- if (setast) {
- thread_ast_set(thr_act, AST_BSD);
- if (current_act() == thr_act)
- ast_on(AST_BSD);
+ thread_mtx_unlock(inc);
+
+ inc = (thread_t)queue_next(&inc->task_threads);
+ }
+
+ if (result_out)
+ *result_out = thread;
+
+ if (thread) {
+ if (setast)
+ act_set_astbsd(thread);
+
+ thread_mtx_unlock(thread);
+ }
+ else
+ result = KERN_FAILURE;
+
+ task_unlock(task);
+
+ return (result);
+}
+
+
+kern_return_t
+check_actforsig(
+ task_t task,
+ thread_t thread,
+ int setast)
+{
+ kern_return_t result = KERN_FAILURE;
+ thread_t inc;
+
+ task_lock(task);
+
+ if (!task->active) {
+ task_unlock(task);
+
+ return (KERN_FAILURE);
+ }
+
+ for (inc = (thread_t)queue_first(&task->threads);
+ !queue_end(&task->threads, (queue_entry_t)inc); ) {
+ if (inc == thread) {
+ thread_mtx_lock(inc);
+
+ if (inc->active &&
+ (inc->state & (TH_ABORT|TH_ABORT_SAFELY)) != TH_ABORT) {
+ result = KERN_SUCCESS;
+ break;
+ }
+
+ thread_mtx_unlock(inc);
+ break;
}
- act_unlock_thread(thr_act);
- }
+
+ inc = (thread_t)queue_next(&inc->task_threads);
+ }
+
+ if (result == KERN_SUCCESS) {
+ if (setast)
+ act_set_astbsd(thread);
+
+ thread_mtx_unlock(thread);
+ }
+
task_unlock(task);
- if (thr_act)
- return(KERN_SUCCESS);
- else
- return(KERN_FAILURE);
+ return (result);
}
/*
- *
+ * This is only safe to call from a thread executing in
+ * in the task's context or if the task is locked Otherwise,
+ * the map could be switched for the task (and freed) before
+ * we to return it here.
*/
vm_map_t get_task_map(task_t t)
{
return(t->map);
}
+vm_map_t get_task_map_reference(task_t t)
+{
+ vm_map_t m;
+
+ if (t == NULL)
+ return VM_MAP_NULL;
+
+ task_lock(t);
+ if (!t->active) {
+ task_unlock(t);
+ return VM_MAP_NULL;
+ }
+ m = t->map;
+ vm_map_reference_swap(m);
+ task_unlock(t);
+ return m;
+}
+
/*
*
*/
int get_task_numacts(task_t t)
{
- return(t->thr_act_count);
+ return(t->thread_count);
+}
+
+/* does this machine need 64bit register set for signal handler */
+int is_64signalregset(void)
+{
+ task_t t = current_task();
+ if(t->taskFeatures[0] & tf64BitData)
+ return(1);
+ else
+ return(0);
}
/*
- * Reset the current task's map by taking a reference
- * on the new map. The old map reference is returned.
+ * The old map reference is returned.
*/
vm_map_t
swap_task_map(task_t task,vm_map_t map)
{
+ thread_t thread = current_thread();
vm_map_t old_map;
- vm_map_reference(map);
+ if (task != thread->task)
+ panic("swap_task_map");
+
task_lock(task);
old_map = task->map;
- task->map = map;
+ thread->map = task->map = map;
task_unlock(task);
return old_map;
}
-/*
- * Reset the current act map.
- * The caller donates us a reference to the new map
- * and we donote our reference to the old map to him.
- */
-vm_map_t
-swap_act_map(thread_act_t thr_act,vm_map_t map)
-{
- vm_map_t old_map;
-
- act_lock(thr_act);
- old_map = thr_act->map;
- thr_act->map = map;
- act_unlock(thr_act);
- return old_map;
-}
-
/*
*
*/
/*
*
*/
-task_t get_threadtask(thread_act_t th)
+task_t get_threadtask(thread_t th)
{
return(th->task);
}
/*
*
*/
-thread_shuttle_t
+thread_t
getshuttle_thread(
- thread_act_t th)
+ thread_t th)
{
-#ifdef DEBUG
- assert(th->thread);
-#endif
- return(th->thread);
+ return(th);
}
/*
*
*/
-thread_act_t
+thread_t
getact_thread(
- thread_shuttle_t th)
+ thread_t th)
{
-#ifdef DEBUG
- assert(th->top_act);
-#endif
- return(th->top_act);
+ return(th);
}
/*
*
*/
-vm_offset_t
+vm_map_offset_t
get_map_min(
vm_map_t map)
{
/*
*
*/
-vm_offset_t
+vm_map_offset_t
get_map_max(
vm_map_t map)
{
return(vm_map_max(map));
}
-vm_size_t
+vm_map_size_t
get_vmmap_size(
vm_map_t map)
{
int total_entries = 0;
vm_map_entry_t entry;
- vm_map_lock(map);
+ if (not_in_kdp)
+ vm_map_lock(map);
entry = vm_map_first_entry(map);
while((entry != vm_map_to_entry(map)) && (entry->vme_start < start)) {
entry = entry->vme_next;
}
entry = entry->vme_next;
}
- vm_map_unlock(map);
+ if (not_in_kdp)
+ vm_map_unlock(map);
return(total_entries);
}
int total_entries = 0;
vm_map_entry_t entry;
- vm_map_lock(map);
+ if (not_in_kdp)
+ vm_map_lock(map);
entry = vm_map_first_entry(map);
while(entry != vm_map_to_entry(map)) {
}
entry = entry->vme_next;
}
- vm_map_unlock(map);
+ if (not_in_kdp)
+ vm_map_unlock(map);
return(total_entries);
}
*/
int
get_thread_userstop(
- thread_act_t th)
+ thread_t th)
{
return(th->user_stop_count);
}
-/*
- *
- */
-int
-inc_task_userstop(
- task_t task)
-{
- int i=0;
- i = task->user_stop_count;
- task->user_stop_count++;
- return(i);
-}
-
-
/*
*
*/
boolean_t
thread_should_abort(
- thread_shuttle_t th)
+ thread_t th)
{
- return( (!th->top_act || !th->top_act->active ||
- th->state & TH_ABORT));
+ return ((th->state & (TH_ABORT|TH_ABORT_SAFELY)) == TH_ABORT);
}
/*
- *
+ * This routine is like thread_should_abort() above. It checks to
+ * see if the current thread is aborted. But unlike above, it also
+ * checks to see if thread is safely aborted. If so, it returns
+ * that fact, and clears the condition (safe aborts only should
+ * have a single effect, and a poll of the abort status
+ * qualifies.
*/
boolean_t
current_thread_aborted (
void)
{
thread_t th = current_thread();
-
- return(!th->top_act || (th->state & TH_ABORT));
+ spl_t s;
+
+ if ((th->state & (TH_ABORT|TH_ABORT_SAFELY)) == TH_ABORT &&
+ (th->options & TH_OPT_INTMASK) != THREAD_UNINT)
+ return (TRUE);
+ if (th->state & TH_ABORT_SAFELY) {
+ s = splsched();
+ thread_lock(th);
+ if (th->state & TH_ABORT_SAFELY)
+ th->state &= ~(TH_ABORT|TH_ABORT_SAFELY);
+ thread_unlock(th);
+ splx(s);
+ }
+ return FALSE;
}
/*
*/
void
task_act_iterate_wth_args(
- task_t task,
- void (*func_callback)(thread_act_t, void *),
- void *func_arg)
+ task_t task,
+ void (*func_callback)(thread_t, void *),
+ void *func_arg)
{
- thread_act_t inc, ninc;
+ thread_t inc;
task_lock(task);
- for (inc = (thread_act_t)queue_first(&task->thr_acts);
- inc != (thread_act_t)&task->thr_acts;
- inc = ninc) {
- ninc = (thread_act_t)queue_next(&inc->thr_acts);
- (void) (*func_callback)(inc, func_arg);
- }
+
+ for (inc = (thread_t)queue_first(&task->threads);
+ !queue_end(&task->threads, (queue_entry_t)inc); ) {
+ (void) (*func_callback)(inc, func_arg);
+ inc = (thread_t)queue_next(&inc->task_threads);
+ }
+
task_unlock(task);
}
ipc_object_release(&(port)->ip_object);
}
-void
-thread_ast_set(
- thread_act_t act,
- ast_t reason)
-{
- act->ast |= reason;
-}
-void
-thread_ast_clear(
- thread_act_t act,
- ast_t reason)
-{
- act->ast &= ~(reason);
-}
-
boolean_t
is_thread_active(
- thread_shuttle_t th)
+ thread_t th)
{
return(th->active);
}
-event_t
-get_thread_waitevent(
- thread_shuttle_t th)
-{
- return(th->wait_event);
-}
-
-kern_return_t
-get_thread_waitresult(
- thread_shuttle_t th)
+void
+astbsd_on(void)
{
- return(th->wait_result);
-}
+ boolean_t reenable;
-kern_return_t
-bsd_refvm_object(vm_object_t object)
-{
- vm_object_reference(object);
- return(KERN_SUCCESS);
+ reenable = ml_set_interrupts_enabled(FALSE);
+ ast_on_fast(AST_BSD);
+ (void)ml_set_interrupts_enabled(reenable);
}
-
projects / apple / xnu.git / blobdiff