diff options
Diffstat (limited to 'vm/vm_object.h')
| -rw-r--r-- | vm/vm_object.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/vm/vm_object.h b/vm/vm_object.h index 71c85459..eb8a0c28 100644 --- a/vm/vm_object.h +++ b/vm/vm_object.h @@ -72,7 +72,7 @@ struct vm_object { */ int ref_count; /* Number of references */ - int resident_page_count; + unsigned long resident_page_count; /* number of resident pages */ struct vm_object *copy; /* Object that should receive @@ -148,8 +148,9 @@ struct vm_object { */ /* boolean_t */ use_shared_copy : 1,/* Use shared (i.e., * delayed) copy on write */ - /* boolean_t */ shadowed: 1; /* Shadow may exist */ + /* boolean_t */ shadowed: 1, /* Shadow may exist */ + /* boolean_t */ cached: 1; /* Object is cached */ queue_chain_t cached_list; /* Attachment point for the list * of objects cached as a result * of their can_persist value @@ -169,6 +170,7 @@ vm_object_t kernel_object; /* the single kernel object */ extern void vm_object_bootstrap(void); extern void vm_object_init(void); +extern void vm_object_collect(vm_object_t); extern void vm_object_terminate(vm_object_t); extern vm_object_t vm_object_allocate(vm_size_t); extern void vm_object_reference(vm_object_t); @@ -290,6 +292,10 @@ vm_object_t vm_object_copy_delayed( * Routines implemented as macros */ +#define vm_object_collectable(object) \ + (((object)->ref_count == 0) \ + && ((object)->resident_page_count == 0)) + #define vm_object_paging_begin(object) \ ((object)->paging_in_progress++) |