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| Rev 367 | Rev 368 | ||
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| 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 */ |
- | |
| 55 | count_t refcount; /**< when > 0, the frame is in busy list, otherwise the frame is in free list */ |
54 | count_t refcount; /**< when > 0, the frame is in busy list, otherwise the frame is in free list */ |
| 56 | link_t link; /**< link either to frame_zone free or busy list */ |
55 | link_t link; /**< link either to frame_zone free or busy list */ |
| 57 | }; |
56 | }; |
| 58 | 57 | ||
| 59 | extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
58 | extern spinlock_t zone_head_lock; /**< this lock protects zone_head list */ |
| 60 | extern link_t zone_head; /**< list of all zones in the system */ |
59 | extern link_t zone_head; /**< list of all zones in the system */ |
| 61 | 60 | ||
| 62 | extern count_t frames; |
- | |
| 63 | extern count_t frames_free; |
- | |
| 64 | - | ||
| 65 | extern count_t kernel_frames; |
- | |
| 66 | extern count_t kernel_frames_free; |
- | |
| 67 | - | ||
| 68 | extern __u8 *frame_bitmap; |
61 | extern void zone_init(void); |
| 69 | extern count_t frame_bitmap_octets; |
62 | extern zone_t *zone_create(__address start, size_t size, int flags); |
| 70 | - | ||
| 71 | extern __u8 *frame_kernel_bitmap; |
63 | extern void zone_attach(zone_t *zone); |
| 72 | 64 | ||
| 73 | extern void frame_init(void); |
65 | extern void frame_init(void); |
| 74 | - | ||
| - | 66 | extern void frame_initialize(frame_t *frame, zone_t *zone); |
|
| 75 | __address frame_alloc(int flags); |
67 | __address frame_alloc(int flags); |
| 76 | extern void frame_free(__address addr); |
68 | extern void frame_free(__address addr); |
| 77 | extern void frame_not_free(__address addr); |
69 | extern void frame_not_free(__address addr); |
| 78 | extern void frame_region_not_free(__address start, __address stop); |
70 | extern void frame_region_not_free(__address start, __address stop); |
| 79 | 71 | ||
| 80 | extern void zone_init(void); |
- | |
| 81 | extern zone_t *zone_create(__address start, size_t size, int flags); |
- | |
| 82 | extern void zone_attach(zone_t *zone); |
- | |
| 83 | - | ||
| 84 | extern void frame_initialize(frame_t *frame, zone_t *zone); |
- | |
| 85 | extern __address frame_get_address(frame_t *frame); |
- | |
| 86 | - | ||
| 87 | /* |
72 | /* |
| 88 | * TODO: Implement the following functions. |
73 | * TODO: Implement the following functions. |
| 89 | */ |
74 | */ |
| 90 | - | ||
| 91 | /* |
- | |
| 92 | extern frame_t *frame_alloc(int flags); |
- | |
| 93 | extern void frame_free(frame_t *frame); |
- | |
| 94 | */ |
- | |
| 95 | extern frame_t *frame_reference(frame_t *frame); |
75 | extern frame_t *frame_reference(frame_t *frame); |
| 96 | extern void frame_release(frame_t *frame); |
76 | extern void frame_release(frame_t *frame); |
| 97 | 77 | ||
| 98 | #endif |
78 | #endif |