Subversion Repositories HelenOS-historic

Rev

Rev 355 | Rev 367 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 355 Rev 366
Line 35... Line 35...
35 
#include <synch/spinlock.h>
 35 
#include <synch/spinlock.h>
36 
 
 36 
 
37 
#define FRAME_KA    1   /* skip frames conflicting with user address space */
 37 
#define FRAME_KA    1   /* skip frames conflicting with user address space */
38 
#define FRAME_PANIC 2   /* panic on failure */
 38 
#define FRAME_PANIC 2   /* panic on failure */
39 
 
 39 
 
40 
struct frame_zone {
 40 
struct zone {
41 
    link_t fz_link;     /**< link to previous and next frame_zone */
 41 
    link_t link;        /**< link to previous and next zone */
42 
 
 42 
 
43 
    spinlock_t lock;    /**< this lock protects everything below */
 43 
    spinlock_t lock;    /**< this lock protects everything below */
44 
    __address base;     /**< physical address of the first frame in the frames array */
 44 
    __address base;     /**< physical address of the first frame in the frames array */
45 
    frame_t *frames;    /**< array of frame_t structures in this zone */
 45 
    frame_t *frames;    /**< array of frame_t structures in this zone */
46 
    link_t free_head;   /**< list of free frame_t structures */
 46 
    link_t free_head;   /**< list of free frame_t structures */
Line 49... Line 49...
49 
    count_t busy_count; /**< number of frame_t structures in busy list */
 49 
    count_t busy_count; /**< number of frame_t structures in busy list */
50 
    int flags;
 50 
    int flags;
51 
};
 51 
};
52 
 
 52 
 
53 
struct frame {
 53 
struct frame {
- 
 
 54 
    zone_t *zone;       /**< host zone */
54 
    count_t refcount;   /**< when > 0, the frame is in busy list, otherwise the frame is in free list */
 55 
    count_t refcount;   /**< when > 0, the frame is in busy list, otherwise the frame is in free list */
55 
    link_t link;        /**< link either to frame_zone free or busy list */
 56 
    link_t link;        /**< link either to frame_zone free or busy list */
56 
};
 57 
};
57 
 
 58 
 
58 
extern spinlock_t frame_zone_head_lock;     /**< this lock protects frame_zone_head list */
 59 
extern spinlock_t zone_head_lock;   /**< this lock protects zone_head list */
59 
extern link_t frame_zone_head;          /**< list of all frame_zone's in the system */
 60 
extern link_t zone_head;        /**< list of all zones in the system */
60 
 
 61 
 
61 
extern count_t frames;
 62 
extern count_t frames;
62 
extern count_t frames_free;
 63 
extern count_t frames_free;
63 
 
 64 
 
64 
extern count_t kernel_frames;
 65 
extern count_t kernel_frames;
Line 74... Line 75...
74 
__address frame_alloc(int flags);
 75 
__address frame_alloc(int flags);
75 
extern void frame_free(__address addr);
 76 
extern void frame_free(__address addr);
76 
extern void frame_not_free(__address addr);
 77 
extern void frame_not_free(__address addr);
77 
extern void frame_region_not_free(__address start, __address stop);
 78 
extern void frame_region_not_free(__address start, __address stop);
78 
 
 79 
 
- 
 
 80 
/*
- 
 
 81 
 * TODO: Implement the following functions.
- 
 
 82 
 */
- 
 
 83 
 
- 
 
 84 
extern void zone_init(void);
- 
 
 85 
extern zone_t *zone_create(__address start, size_t size, int flags);
- 
 
 86 
extern void zone_attach(zone_t *zone);
- 
 
 87 
 
- 
 
 88 
/*
79 
extern frame_zone_t *frame_zone_create();
 89 
extern frame_t *frame_alloc(int flags);
- 
 
 90 
extern void frame_free(frame_t *frame);
- 
 
 91 
*/
- 
 
 92 
extern void frame_initialize(frame_t *frame);
- 
 
 93 
extern __address frame_get_address(frame_t *frame);
- 
 
 94 
extern frame_t *frame_reference(frame_t *frame);
- 
 
 95 
extern void frame_release(frame_t *frame);
- 
 
 96 
 
80 
#endif
 97 
#endif