#include <ipc/ipc_port.h>
#include <kern/thread.h>
-#include <mach/shared_memory_server.h>
#include <kern/zalloc.h>
#include <mach/kern_return.h>
#include <mach/vm_inherit.h>
#include <vm/vm_map.h>
#include <vm/vm_page.h>
+#include <mach/shared_memory_server.h>
+#include <vm/vm_shared_memory_server.h>
+
+/* forward declarations */
+static kern_return_t
+shared_file_init(
+ ipc_port_t *shared_text_region_handle,
+ vm_size_t text_region_size,
+ ipc_port_t *shared_data_region_handle,
+ vm_size_t data_region_size,
+ vm_offset_t *shared_file_mapping_array);
+
+static load_struct_t *
+lsf_hash_lookup(
+ queue_head_t *hash_table,
+ void *file_object,
+ int size,
+ boolean_t alternate,
+ shared_region_task_mappings_t sm_info);
+
+static load_struct_t *
+lsf_hash_delete(
+ void *file_object,
+ vm_offset_t base_offset,
+ shared_region_task_mappings_t sm_info);
+
+static void
+lsf_hash_insert(
+ load_struct_t *entry,
+ shared_region_task_mappings_t sm_info);
+
+static kern_return_t
+lsf_load(
+ vm_offset_t mapped_file,
+ vm_size_t mapped_file_size,
+ vm_offset_t *base_address,
+ sf_mapping_t *mappings,
+ int map_cnt,
+ void *file_object,
+ int flags,
+ shared_region_task_mappings_t sm_info);
+
+static void
+lsf_unload(
+ void *file_object,
+ vm_offset_t base_offset,
+ shared_region_task_mappings_t sm_info);
+
+#define load_file_hash(file_object, size) \
+ ((((natural_t)file_object) & 0xffffff) % size)
+
+/* Implementation */
vm_offset_t shared_file_text_region;
vm_offset_t shared_file_data_region;
ipc_port_t shared_text_region_handle;
ipc_port_t shared_data_region_handle;
vm_offset_t shared_file_mapping_array = 0;
-shared_region_mapping_t system_shared_region;
+shared_region_mapping_t system_shared_region = NULL;
ipc_port_t sfma_handle = NULL;
zone_t lsf_zone;
{
long shared_text_region_size;
long shared_data_region_size;
+ shared_region_mapping_t new_system_region;
+ shared_region_mapping_t old_system_region;
shared_text_region_size = 0x10000000;
shared_data_region_size = 0x10000000;
shared_file_init(&shared_text_region_handle,
shared_text_region_size, &shared_data_region_handle,
shared_data_region_size, &shared_file_mapping_array);
+
shared_region_mapping_create(shared_text_region_handle,
shared_text_region_size, shared_data_region_handle,
shared_data_region_size, shared_file_mapping_array,
- GLOBAL_SHARED_TEXT_SEGMENT, &system_shared_region,
+ GLOBAL_SHARED_TEXT_SEGMENT, &new_system_region,
0x9000000, 0x9000000);
+ old_system_region = system_shared_region;
+ system_shared_region = new_system_region;
system_shared_region->flags = SHARED_REGION_SYSTEM;
+ /* consume the reference held because this is the */
+ /* system shared region */
+ if(old_system_region) {
+ shared_region_mapping_dealloc(old_system_region);
+ }
+ /* hold an extra reference because these are the system */
+ /* shared regions. */
+ shared_region_mapping_ref(system_shared_region);
vm_set_shared_region(current_task(), system_shared_region);
}
/* but also coordinates requests for space. */
-kern_return_t
+static kern_return_t
shared_file_init(
ipc_port_t *shared_text_region_handle,
vm_size_t text_region_size,
p->busy = FALSE;
vm_object_unlock(buf_object);
pmap_enter(kernel_pmap, b, p->phys_addr,
- VM_PROT_READ | VM_PROT_WRITE, TRUE);
+ VM_PROT_READ | VM_PROT_WRITE,
+ VM_WIMG_USE_DEFAULT, TRUE);
}
vm_offset_t *base_address,
int map_cnt,
sf_mapping_t *mappings,
- vm_object_t file_object,
+ memory_object_control_t file_control,
shared_region_task_mappings_t sm_info,
int *flags)
{
+ vm_object_t file_object;
vm_map_entry_t entry;
shared_file_info_t *shared_file_header;
load_struct_t *file_entry;
/* Find the entry in the map associated with the current mapping */
/* of the file object */
-
+ file_object = memory_object_control_to_vm_object(file_control);
if(vm_map_lookup_entry(current_map(), mapped_file, &entry)) {
vm_object_t mapped_object;
if(entry->is_sub_map) {
regions = (shared_region_mapping_t)sm_info->self;
regions->flags |= SHARED_REGION_FULL;
if(regions == system_shared_region) {
+ shared_region_mapping_t new_system_shared_regions;
shared_file_boot_time_init();
- /* current task must stay wit its current */
- /* regions */
+ /* current task must stay with its current */
+ /* regions, drop count on system_shared_region */
+ /* and put back our original set */
+ vm_get_shared_region(current_task(), &new_system_shared_regions);
+ shared_region_mapping_dealloc(new_system_shared_regions);
vm_set_shared_region(current_task(), regions);
}
}
/* A hash lookup function for the list of loaded files in */
/* shared_memory_server space. */
-load_struct_t *
+static load_struct_t *
lsf_hash_lookup(
queue_head_t *hash_table,
void *file_object,
/* Removes a map_list, (list of loaded extents) for a file from */
/* the loaded file hash table. */
-load_struct_t *
+static load_struct_t *
lsf_hash_delete(
void *file_object,
vm_offset_t base_offset,
/* Inserts a new map_list, (list of loaded file extents), into the */
/* server loaded file hash table. */
-void
+static void
lsf_hash_insert(
load_struct_t *entry,
shared_region_task_mappings_t sm_info)
/* if any extent fails to load or if the file was already loaded */
/* in a different configuration, lsf_load fails. */
-kern_return_t
+static kern_return_t
lsf_load(
vm_offset_t mapped_file,
vm_size_t mapped_file_size,
/* If one is found the associated extents in shared memory are deallocated */
/* and the extent list is freed */
-void
+static void
lsf_unload(
void *file_object,
vm_offset_t base_offset,
shared_file_available_hash_ele++;
}
}
+
+/* integer is from 1 to 100 and represents percent full */
+unsigned int
+lsf_mapping_pool_gauge()
+{
+ return ((lsf_zone->count * lsf_zone->elem_size) * 100)/lsf_zone->max_size;
+}
projects / apple / xnu.git / blobdiff