69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
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#ifndef KERNEL_VM_CONTROLLER_H_
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#define KERNEL_VM_CONTROLLER_H_
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#include <kernel/locks.h>
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#include <kernel/object.h>
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#include <mango/types.h>
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struct thread;
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struct equeue;
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struct vm_object;
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enum page_request_status {
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PAGE_REQUEST_PENDING = 0,
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PAGE_REQUEST_IN_PROGRESS,
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PAGE_REQUEST_COMPLETE,
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};
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struct vm_controller {
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struct object vc_base;
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/* tree of struct vm_objects bound to this controller, keyed with the
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* vm_key_t specified when the object(s) were created. */
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struct btree vc_objects;
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/* tree of pending page requests */
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struct btree vc_requests;
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};
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struct page_request {
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uint64_t req_id;
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enum page_request_status req_status;
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kern_status_t req_result;
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struct vm_object *req_object;
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struct thread *req_sender;
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struct btree_node req_node;
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off_t req_offset;
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size_t req_length;
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};
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extern kern_status_t vm_controller_type_init(void);
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extern struct vm_controller *vm_controller_cast(struct object *obj);
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extern struct vm_controller *vm_controller_create(void);
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extern kern_status_t vm_controller_recv(
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struct vm_controller *ctrl,
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equeue_packet_page_request_t *out);
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extern kern_status_t vm_controller_recv_async(
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struct vm_controller *ctrl,
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struct equeue *eq);
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extern kern_status_t vm_controller_create_object(
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struct vm_controller *ctrl,
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const char *name,
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size_t name_len,
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equeue_key_t key,
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size_t data_len,
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vm_prot_t prot,
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struct vm_object **out);
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extern kern_status_t vm_controller_detach_object(
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struct vm_controller *ctrl,
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struct vm_object *vmo);
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extern kern_status_t vm_controller_send_request(
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struct vm_controller *ctrl,
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struct page_request *req);
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DEFINE_OBJECT_LOCK_FUNCTION(vm_controller, vc_base)
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#endif
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