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| Rev 368 | Rev 373 | ||
|---|---|---|---|
| Line 113... | Line 113... | ||
| 113 | tmp = zone->free_head.next; |
113 | tmp = zone->free_head.next; |
| 114 | frame = list_get_instance(tmp, frame_t, link); |
114 | frame = list_get_instance(tmp, frame_t, link); |
| 115 | 115 | ||
| 116 | frame->refcount++; |
116 | frame->refcount++; |
| 117 | list_remove(tmp); /* remove frame from free_head */ |
117 | list_remove(tmp); /* remove frame from free_head */ |
| 118 | list_append(tmp, &zone->busy_head); /* append frame to busy_head */ |
- | |
| 119 | zone->free_count--; |
118 | zone->free_count--; |
| 120 | zone->busy_count++; |
119 | zone->busy_count++; |
| 121 | 120 | ||
| 122 | v = zone->base + (frame - zone->frames) * FRAME_SIZE; |
121 | v = zone->base + (frame - zone->frames) * FRAME_SIZE; |
| 123 | 122 | ||
| Line 178... | Line 177... | ||
| 178 | 177 | ||
| 179 | frame = &zone->frames[(addr - zone->base)/FRAME_SIZE]; |
178 | frame = &zone->frames[(addr - zone->base)/FRAME_SIZE]; |
| 180 | ASSERT(frame->refcount); |
179 | ASSERT(frame->refcount); |
| 181 | 180 | ||
| 182 | if (!--frame->refcount) { |
181 | if (!--frame->refcount) { |
| 183 | list_remove(&frame->link); /* remove frame from busy_head */ |
- | |
| 184 | list_append(&frame->link, &zone->free_head); /* append frame to free_head */ |
182 | list_append(&frame->link, &zone->free_head); /* append frame to free_head */ |
| 185 | zone->free_count++; |
183 | zone->free_count++; |
| 186 | zone->busy_count--; |
184 | zone->busy_count--; |
| 187 | } |
185 | } |
| 188 | 186 | ||
| Line 193... | Line 191... | ||
| 193 | } |
191 | } |
| 194 | 192 | ||
| 195 | /** Mark frame not free. |
193 | /** Mark frame not free. |
| 196 | * |
194 | * |
| 197 | * Find respective frame structrue for supplied addr. |
195 | * Find respective frame structrue for supplied addr. |
| 198 | * Increment frame reference count and move the frame structure to busy list. |
196 | * Increment frame reference count and remove the frame structure from free list. |
| 199 | * |
197 | * |
| 200 | * @param addr Address of the frame to be marked. It must be a multiple of FRAME_SIZE. |
198 | * @param addr Address of the frame to be marked. It must be a multiple of FRAME_SIZE. |
| 201 | */ |
199 | */ |
| 202 | void frame_not_free(__address addr) |
200 | void frame_not_free(__address addr) |
| 203 | { |
201 | { |
| Line 239... | Line 237... | ||
| 239 | 237 | ||
| 240 | if (!frame->refcount) { |
238 | if (!frame->refcount) { |
| 241 | frame->refcount++; |
239 | frame->refcount++; |
| 242 | 240 | ||
| 243 | list_remove(&frame->link); /* remove frame from free_head */ |
241 | list_remove(&frame->link); /* remove frame from free_head */ |
| 244 | list_append(&frame->link, &zone->busy_head); /* append frame to busy_head */ |
- | |
| 245 | zone->free_count--; |
242 | zone->free_count--; |
| 246 | zone->busy_count++; |
243 | zone->busy_count++; |
| 247 | } |
244 | } |
| 248 | 245 | ||
| 249 | spinlock_unlock(&zone->lock); |
246 | spinlock_unlock(&zone->lock); |
| Line 311... | Line 308... | ||
| 311 | 308 | ||
| 312 | z->free_count = cnt; |
309 | z->free_count = cnt; |
| 313 | list_initialize(&z->free_head); |
310 | list_initialize(&z->free_head); |
| 314 | 311 | ||
| 315 | z->busy_count = 0; |
312 | z->busy_count = 0; |
| 316 | list_initialize(&z->busy_head); |
- | |
| 317 | 313 | ||
| 318 | z->frames = (frame_t *) malloc(cnt * sizeof(frame_t)); |
314 | z->frames = (frame_t *) malloc(cnt * sizeof(frame_t)); |
| 319 | if (!z->frames) { |
315 | if (!z->frames) { |
| 320 | free(z); |
316 | free(z); |
| 321 | return NULL; |
317 | return NULL; |