*
* @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.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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.
+ *
+ * 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@
*/
if((tws->table_ele[0] = (tws_hash_ptr_t)
kalloc(sizeof(struct tws_hash_ptr) * lines * rows))
== NULL) {
- kfree((vm_offset_t)tws->table[0], sizeof(tws_hash_ele_t)
+ kfree((vm_offset_t)tws->table[0], sizeof(tws_hash_ptr_t)
* lines * rows);
kfree((vm_offset_t)tws, sizeof(struct tws_hash));
return (tws_hash_t)NULL;
&& (dump_pmap == 1)) {
pmap_remove_some_phys((pmap_t)
vm_map_pmap(
- hash_ele->map),
- p->phys_addr);
+ current_map()),
+ p->phys_page);
}
}
local_off += PAGE_SIZE_64;
}
kern_return_t
-tws_lookup(
+tws_internal_lookup(
tws_hash_t tws,
vm_object_offset_t offset,
vm_object_t object,
if(object->private)
return KERN_SUCCESS;
- if(!tws_lock_try(tws)) {
- return KERN_FAILURE;
- }
-
index = do_tws_hash(object, offset,
tws->number_of_elements, tws->number_of_lines);
loop = 0;
age_of_cache = ((sched_tick
- tws->time_of_creation) >> SCHED_TICK_SHIFT);
if (age_of_cache > 35) {
- tws_unlock(tws);
return KERN_OPERATION_TIMED_OUT;
}
}
age_of_cache = ((sched_tick
- tws->time_of_creation) >> SCHED_TICK_SHIFT);
if (age_of_cache > 60) {
- tws_unlock(tws);
return KERN_OPERATION_TIMED_OUT;
}
}
set = cache_ele->element->line/tws->number_of_lines;
ele_line = cache_ele->element->line - set;
*line = &tws->cache[set][ele_line];
- tws_unlock(tws);
return KERN_SUCCESS;
}
- tws_unlock(tws);
return KERN_FAILURE;
}
+kern_return_t
+tws_lookup(
+ tws_hash_t tws,
+ vm_object_offset_t offset,
+ vm_object_t object,
+ tws_hash_line_t *line)
+{
+ kern_return_t kr;
+
+ if(!tws_lock_try(tws)) {
+ return KERN_FAILURE;
+ }
+ kr = tws_internal_lookup(tws,
+ offset, object, line);
+ tws_unlock(tws);
+ return kr;
+}
+
kern_return_t
tws_expand_working_set(
vm_offset_t tws,
ask_for_startup_cache_release = 1;
}
}
- if((tws->startup_name != NULL) && (tws->mod == 0)) {
- /* Ensure as good a working set as possible */
- pmap_remove(map->pmap, 0, GLOBAL_SHARED_TEXT_SEGMENT);
- pmap_remove(map->pmap,
- GLOBAL_SHARED_DATA_SEGMENT
- + SHARED_DATA_REGION_SIZE, 0xFFFFF000);
- }
-
/* This next bit of code, the and alternate hash */
/* are all made necessary because of IPC COW */
tws_unlock(tws);
return KERN_NO_SPACE;
}
+ /* object persistence is guaranteed by */
+ /* an elevated paging or object */
+ /* reference count in the caller. */
+ vm_object_unlock(object);
if((tws->table[set] = (tws_hash_ptr_t *)
kalloc(sizeof(tws_hash_ptr_t)
* tws->number_of_lines
* tws->number_of_lines
* tws->number_of_elements))
== NULL) {
- kfree((vm_offset_t)tws->table_ele[set],
- sizeof(tws_hash_ptr_t)
+ kfree((vm_offset_t)tws->table_ele[set],
+ sizeof(struct tws_hash_ptr)
* tws->number_of_lines
* tws->number_of_elements);
kfree((vm_offset_t)tws->table[set],
- sizeof(struct tws_hash_ptr)
+ sizeof(tws_hash_ptr_t)
* tws->number_of_lines
* tws->number_of_elements);
tws->table[set] = NULL;
(struct tws_hash_line)
* tws->number_of_lines))
== NULL) {
- kfree((vm_offset_t)tws->table[set],
- sizeof(tws_hash_ptr_t)
+ kfree((vm_offset_t)tws->alt_ele[set],
+ sizeof(struct tws_hash_ptr)
* tws->number_of_lines
* tws->number_of_elements);
- kfree((vm_offset_t)tws->table_ele[set],
+ kfree((vm_offset_t)tws->table_ele[set],
sizeof(struct tws_hash_ptr)
* tws->number_of_lines
* tws->number_of_elements);
- kfree((vm_offset_t)tws->alt_ele[set],
- sizeof(struct tws_hash_ptr)
+ kfree((vm_offset_t)tws->table[set],
+ sizeof(tws_hash_ptr_t)
* tws->number_of_lines
* tws->number_of_elements);
tws->table[set] = NULL;
sizeof(struct tws_hash_line)
* tws->number_of_lines);
}
+ vm_object_lock(object);
} else {
int age_of_cache;
age_of_cache =
int age_of_cache;
int pre_heat_size;
unsigned int ele_cache;
- unsigned int end_cache = NULL;
- unsigned int start_cache = NULL;
+ unsigned int end_cache = 0;
+ unsigned int start_cache = 0;
if((object->private) || !(object->pager))
return;
object_size = object->size;
}
+ if((!tws) || (!tws_lock_try(tws))) {
+ return;
+ }
+
age_of_cache = ((sched_tick
- tws->time_of_creation) >> SCHED_TICK_SHIFT);
*start = *start & TWS_HASH_OFF_MASK;
*end = *start + (32 * PAGE_SIZE_64);
if(*end > object_size) {
- *end = trunc_page(object_size);
+ *end = trunc_page_64(object_size);
max_length = 0;
if(before >= *end) {
*end = after;
*end = after +
(32 * PAGE_SIZE_64);
if(*end > object_size) {
- *end = trunc_page(object_size);
+ *end = trunc_page_64(object_size);
max_length = 0;
if(*start >= *end) {
*end = after;
break;
}
- if(start_cache != NULL) {
+ if(start_cache != 0) {
unsigned int mask;
for (mask = 1; mask != 0; mask = mask << 1) {
break;
}
}
- if(end_cache != NULL) {
+ if(end_cache != 0) {
unsigned int mask;
for (mask = 0x80000000;
if (*start >= *end)
panic("bad clipping occurred\n");
+ tws_unlock(tws);
return;
}
}
(object_size >=
(after + PAGE_SIZE_64))) {
if(length >= pre_heat_size) {
- if(tws_lookup(tws, after, object,
+ if(tws_internal_lookup(tws, after, object,
&line) != KERN_SUCCESS) {
vm_object_offset_t extend;
extend = after + PAGE_SIZE_64;
- if(tws_lookup(tws, extend, object,
+ if(tws_internal_lookup(tws, extend, object,
&line) != KERN_SUCCESS) {
break;
}
}
if (vm_page_lookup(object, after) != VM_PAGE_NULL) {
- /* we can bridge resident pages */
- after += PAGE_SIZE_64;
- length += PAGE_SIZE;
- continue;
+ /*
+ * don't bridge resident pages
+ */
+ break;
}
if (object->internal) {
before -= PAGE_SIZE_64;
if(length >= pre_heat_size) {
- if(tws_lookup(tws, before, object,
+ if(tws_internal_lookup(tws, before, object,
&line) != KERN_SUCCESS) {
vm_object_offset_t extend;
if (extend == 0)
break;
extend -= PAGE_SIZE_64;
- if(tws_lookup(tws, extend, object,
+ if(tws_internal_lookup(tws, extend, object,
&line) != KERN_SUCCESS) {
break;
}
}
if (vm_page_lookup(object, before) != VM_PAGE_NULL) {
- /* we can bridge resident pages */
- *start -= PAGE_SIZE_64;
- length += PAGE_SIZE;
- continue;
+ /*
+ * don't bridge resident pages
+ */
+ break;
}
if (object->internal) {
*start -= PAGE_SIZE_64;
length += PAGE_SIZE;
}
+ tws_unlock(tws);
}
tws_line_signal(
return KERN_SUCCESS;
}
*new_info = TRUE;
+
error = tws_write_startup_file(task,
fid, mod, app_name, uid);
if(error)
return error;
- /* use the mod in the write case as an init */
- /* flag */
- mod = 0;
} else {
error = tws_read_startup_file(task,
/* just in case their not, make sure we dealloc correctly */
startup->tws_hash_size = cache_size;
-
tws->startup_cache = startup;
tws_unlock(tws);
return KERN_SUCCESS;
}
+void
+tws_hash_ws_flush(tws_hash_t tws) {
+ tws_startup_t scache;
+ if(tws == NULL) {
+ return;
+ }
+ tws_lock(tws);
+ if(tws->startup_name != NULL) {
+ scache = tws_create_startup_list(tws);
+ if(scache == NULL) {
+ /* dump the name cache, we'll */
+ /* get it next time */
+ kfree((vm_offset_t)
+ tws->startup_name,
+ tws->startup_name_length);
+ tws->startup_name = NULL;
+ tws_unlock(tws);
+ return;
+ }
+ bsd_write_page_cache_file(tws->uid, tws->startup_name,
+ scache, scache->tws_hash_size,
+ tws->mod, tws->fid);
+ kfree((vm_offset_t)scache,
+ scache->tws_hash_size);
+ kfree((vm_offset_t)
+ tws->startup_name,
+ tws->startup_name_length);
+ tws->startup_name = NULL;
+ }
+ tws_unlock(tws);
+ return;
+}
+
void
tws_hash_destroy(tws_hash_t tws)
{
projects / apple / xnu.git / blobdiff