1 |
/* |
/* |
2 |
rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
3 |
Cache routines |
Cache routines |
4 |
Copyright (C) Matthew Chapman 1999-2002 |
Copyright (C) Matthew Chapman 1999-2005 |
5 |
|
Copyright (C) Jeroen Meijer 2005 |
6 |
|
|
7 |
This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
8 |
it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
9 |
the Free Software Foundation; either version 2 of the License, or |
the Free Software Foundation; either version 2 of the License, or |
10 |
(at your option) any later version. |
(at your option) any later version. |
11 |
|
|
12 |
This program is distributed in the hope that it will be useful, |
This program is distributed in the hope that it will be useful, |
13 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 |
GNU General Public License for more details. |
GNU General Public License for more details. |
16 |
|
|
17 |
You should have received a copy of the GNU General Public License |
You should have received a copy of the GNU General Public License |
18 |
along with this program; if not, write to the Free Software |
along with this program; if not, write to the Free Software |
19 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 |
|
|
22 |
#include "rdesktop.h" |
#include "rdesktop.h" |
23 |
|
|
24 |
|
/* BITMAP CACHE */ |
25 |
|
extern int g_pstcache_fd[]; |
26 |
|
|
27 |
#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) |
#define NUM_ELEMENTS(array) (sizeof(array) / sizeof(array[0])) |
28 |
|
#define IS_PERSISTENT(id) (g_pstcache_fd[id] > 0) |
29 |
|
#define TO_TOP -1 |
30 |
|
#define NOT_SET -1 |
31 |
|
#define IS_SET(idx) (idx >= 0) |
32 |
|
|
33 |
|
/* |
34 |
|
* TODO: Test for optimal value of BUMP_COUNT. TO_TOP gives lowest cpu utilisation but using |
35 |
|
* a positive value will hopefully result in less frequently used bitmaps having a greater chance |
36 |
|
* of being evicted from the cache, and therby reducing the need to load bitmaps from disk. |
37 |
|
* (Jeroen) |
38 |
|
*/ |
39 |
|
#define BUMP_COUNT 40 |
40 |
|
|
41 |
|
struct bmpcache_entry |
42 |
|
{ |
43 |
|
HBITMAP bitmap; |
44 |
|
sint16 previous; |
45 |
|
sint16 next; |
46 |
|
}; |
47 |
|
|
48 |
|
static struct bmpcache_entry g_bmpcache[3][0xa00]; |
49 |
|
static HBITMAP g_volatile_bc[3]; |
50 |
|
|
51 |
|
static int g_bmpcache_lru[3] = { NOT_SET, NOT_SET, NOT_SET }; |
52 |
|
static int g_bmpcache_mru[3] = { NOT_SET, NOT_SET, NOT_SET }; |
53 |
|
static int g_bmpcache_count[3]; |
54 |
|
|
55 |
/* BITMAP CACHE */ |
/* Setup the bitmap cache lru/mru linked list */ |
56 |
static HBITMAP bmpcache[3][600]; |
void |
57 |
|
cache_rebuild_bmpcache_linked_list(uint8 id, sint16 * idx, int count) |
58 |
|
{ |
59 |
|
int n = count, c = 0; |
60 |
|
sint16 n_idx; |
61 |
|
|
62 |
|
/* find top, skip evicted bitmaps */ |
63 |
|
while (--n >= 0 && g_bmpcache[id][idx[n]].bitmap == NULL); |
64 |
|
if (n < 0) |
65 |
|
{ |
66 |
|
g_bmpcache_mru[id] = g_bmpcache_lru[id] = NOT_SET; |
67 |
|
return; |
68 |
|
} |
69 |
|
|
70 |
|
g_bmpcache_mru[id] = idx[n]; |
71 |
|
g_bmpcache[id][idx[n]].next = NOT_SET; |
72 |
|
n_idx = idx[n]; |
73 |
|
c++; |
74 |
|
|
75 |
|
/* link list */ |
76 |
|
while (n >= 0) |
77 |
|
{ |
78 |
|
/* skip evicted bitmaps */ |
79 |
|
while (--n >= 0 && g_bmpcache[id][idx[n]].bitmap == NULL); |
80 |
|
|
81 |
|
if (n < 0) |
82 |
|
break; |
83 |
|
|
84 |
|
g_bmpcache[id][n_idx].previous = idx[n]; |
85 |
|
g_bmpcache[id][idx[n]].next = n_idx; |
86 |
|
n_idx = idx[n]; |
87 |
|
c++; |
88 |
|
} |
89 |
|
|
90 |
|
g_bmpcache[id][n_idx].previous = NOT_SET; |
91 |
|
g_bmpcache_lru[id] = n_idx; |
92 |
|
|
93 |
|
if (c != g_bmpcache_count[id]) |
94 |
|
{ |
95 |
|
error("Oops. %d in bitmap cache linked list, %d in ui cache...\n", c, |
96 |
|
g_bmpcache_count[id]); |
97 |
|
exit(1); |
98 |
|
} |
99 |
|
} |
100 |
|
|
101 |
|
/* Move a bitmap to a new position in the linked list. */ |
102 |
|
void |
103 |
|
cache_bump_bitmap(uint8 id, uint16 idx, int bump) |
104 |
|
{ |
105 |
|
int p_idx, n_idx, n; |
106 |
|
|
107 |
|
if (!IS_PERSISTENT(id)) |
108 |
|
return; |
109 |
|
|
110 |
|
if (g_bmpcache_mru[id] == idx) |
111 |
|
return; |
112 |
|
|
113 |
|
DEBUG_RDP5(("bump bitmap: id=%d, idx=%d, bump=%d\n", id, idx, bump)); |
114 |
|
|
115 |
|
n_idx = g_bmpcache[id][idx].next; |
116 |
|
p_idx = g_bmpcache[id][idx].previous; |
117 |
|
|
118 |
|
if (IS_SET(n_idx)) |
119 |
|
{ |
120 |
|
/* remove */ |
121 |
|
--g_bmpcache_count[id]; |
122 |
|
if (IS_SET(p_idx)) |
123 |
|
g_bmpcache[id][p_idx].next = n_idx; |
124 |
|
else |
125 |
|
g_bmpcache_lru[id] = n_idx; |
126 |
|
if (IS_SET(n_idx)) |
127 |
|
g_bmpcache[id][n_idx].previous = p_idx; |
128 |
|
else |
129 |
|
g_bmpcache_mru[id] = p_idx; |
130 |
|
} |
131 |
|
else |
132 |
|
{ |
133 |
|
p_idx = NOT_SET; |
134 |
|
n_idx = g_bmpcache_lru[id]; |
135 |
|
} |
136 |
|
|
137 |
|
if (bump >= 0) |
138 |
|
{ |
139 |
|
for (n = 0; n < bump && IS_SET(n_idx); n++) |
140 |
|
{ |
141 |
|
p_idx = n_idx; |
142 |
|
n_idx = g_bmpcache[id][p_idx].next; |
143 |
|
} |
144 |
|
} |
145 |
|
else |
146 |
|
{ |
147 |
|
p_idx = g_bmpcache_mru[id]; |
148 |
|
n_idx = NOT_SET; |
149 |
|
} |
150 |
|
|
151 |
|
/* insert */ |
152 |
|
++g_bmpcache_count[id]; |
153 |
|
g_bmpcache[id][idx].previous = p_idx; |
154 |
|
g_bmpcache[id][idx].next = n_idx; |
155 |
|
|
156 |
|
if (p_idx >= 0) |
157 |
|
g_bmpcache[id][p_idx].next = idx; |
158 |
|
else |
159 |
|
g_bmpcache_lru[id] = idx; |
160 |
|
|
161 |
|
if (n_idx >= 0) |
162 |
|
g_bmpcache[id][n_idx].previous = idx; |
163 |
|
else |
164 |
|
g_bmpcache_mru[id] = idx; |
165 |
|
} |
166 |
|
|
167 |
|
/* Evict the least-recently used bitmap from the cache */ |
168 |
|
void |
169 |
|
cache_evict_bitmap(uint8 id) |
170 |
|
{ |
171 |
|
uint16 idx; |
172 |
|
int n_idx; |
173 |
|
|
174 |
|
if (!IS_PERSISTENT(id)) |
175 |
|
return; |
176 |
|
|
177 |
|
idx = g_bmpcache_lru[id]; |
178 |
|
n_idx = g_bmpcache[id][idx].next; |
179 |
|
DEBUG_RDP5(("evict bitmap: id=%d idx=%d n_idx=%d bmp=0x%x\n", id, idx, n_idx, |
180 |
|
g_bmpcache[id][idx].bitmap)); |
181 |
|
|
182 |
|
ui_destroy_bitmap(g_bmpcache[id][idx].bitmap); |
183 |
|
--g_bmpcache_count[id]; |
184 |
|
g_bmpcache[id][idx].bitmap = 0; |
185 |
|
|
186 |
|
g_bmpcache_lru[id] = n_idx; |
187 |
|
g_bmpcache[id][n_idx].previous = NOT_SET; |
188 |
|
|
189 |
|
pstcache_touch_bitmap(id, idx, 0); |
190 |
|
} |
191 |
|
|
192 |
/* Retrieve a bitmap from the cache */ |
/* Retrieve a bitmap from the cache */ |
193 |
HBITMAP |
HBITMAP |
194 |
cache_get_bitmap(uint8 cache_id, uint16 cache_idx) |
cache_get_bitmap(uint8 id, uint16 idx) |
195 |
{ |
{ |
196 |
HBITMAP bitmap; |
if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0]))) |
197 |
|
{ |
198 |
|
if (g_bmpcache[id][idx].bitmap || pstcache_load_bitmap(id, idx)) |
199 |
|
{ |
200 |
|
if (IS_PERSISTENT(id)) |
201 |
|
cache_bump_bitmap(id, idx, BUMP_COUNT); |
202 |
|
|
203 |
if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) |
return g_bmpcache[id][idx].bitmap; |
204 |
|
} |
205 |
|
} |
206 |
|
else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff)) |
207 |
{ |
{ |
208 |
bitmap = bmpcache[cache_id][cache_idx]; |
return g_volatile_bc[id]; |
|
if (bitmap != NULL) |
|
|
return bitmap; |
|
209 |
} |
} |
210 |
|
|
211 |
error("get bitmap %d:%d\n", cache_id, cache_idx); |
error("get bitmap %d:%d\n", id, idx); |
212 |
return NULL; |
return NULL; |
213 |
} |
} |
214 |
|
|
215 |
/* Store a bitmap in the cache */ |
/* Store a bitmap in the cache */ |
216 |
void |
void |
217 |
cache_put_bitmap(uint8 cache_id, uint16 cache_idx, HBITMAP bitmap) |
cache_put_bitmap(uint8 id, uint16 idx, HBITMAP bitmap) |
218 |
{ |
{ |
219 |
HBITMAP old; |
HBITMAP old; |
220 |
|
|
221 |
if ((cache_id < NUM_ELEMENTS(bmpcache)) && (cache_idx < NUM_ELEMENTS(bmpcache[0]))) |
if ((id < NUM_ELEMENTS(g_bmpcache)) && (idx < NUM_ELEMENTS(g_bmpcache[0]))) |
222 |
{ |
{ |
223 |
old = bmpcache[cache_id][cache_idx]; |
old = g_bmpcache[id][idx].bitmap; |
224 |
if (old != NULL) |
if (old != NULL) |
225 |
ui_destroy_bitmap(old); |
ui_destroy_bitmap(old); |
226 |
|
g_bmpcache[id][idx].bitmap = bitmap; |
227 |
|
|
228 |
|
if (IS_PERSISTENT(id)) |
229 |
|
{ |
230 |
|
if (old == NULL) |
231 |
|
g_bmpcache[id][idx].previous = g_bmpcache[id][idx].next = NOT_SET; |
232 |
|
|
233 |
bmpcache[cache_id][cache_idx] = bitmap; |
cache_bump_bitmap(id, idx, TO_TOP); |
234 |
|
if (g_bmpcache_count[id] > BMPCACHE2_C2_CELLS) |
235 |
|
cache_evict_bitmap(id); |
236 |
|
} |
237 |
|
} |
238 |
|
else if ((id < NUM_ELEMENTS(g_volatile_bc)) && (idx == 0x7fff)) |
239 |
|
{ |
240 |
|
old = g_volatile_bc[id]; |
241 |
|
if (old != NULL) |
242 |
|
ui_destroy_bitmap(old); |
243 |
|
g_volatile_bc[id] = bitmap; |
244 |
} |
} |
245 |
else |
else |
246 |
{ |
{ |
247 |
error("put bitmap %d:%d\n", cache_id, cache_idx); |
error("put bitmap %d:%d\n", id, idx); |
248 |
} |
} |
249 |
} |
} |
250 |
|
|
251 |
|
/* Updates the persistent bitmap cache MRU information on exit */ |
252 |
|
void |
253 |
|
cache_save_state(void) |
254 |
|
{ |
255 |
|
uint32 id = 0, t = 0; |
256 |
|
int idx; |
257 |
|
|
258 |
|
for (id = 0; id < NUM_ELEMENTS(g_bmpcache); id++) |
259 |
|
if (IS_PERSISTENT(id)) |
260 |
|
{ |
261 |
|
DEBUG_RDP5(("Saving cache state for bitmap cache %d...", id)); |
262 |
|
idx = g_bmpcache_lru[id]; |
263 |
|
while (idx >= 0) |
264 |
|
{ |
265 |
|
pstcache_touch_bitmap(id, idx, ++t); |
266 |
|
idx = g_bmpcache[id][idx].next; |
267 |
|
} |
268 |
|
DEBUG_RDP5((" %d stamps written.\n", t)); |
269 |
|
} |
270 |
|
} |
271 |
|
|
272 |
|
|
273 |
/* FONT CACHE */ |
/* FONT CACHE */ |
274 |
static FONTGLYPH fontcache[12][256]; |
static FONTGLYPH g_fontcache[12][256]; |
275 |
|
|
276 |
/* Retrieve a glyph from the font cache */ |
/* Retrieve a glyph from the font cache */ |
277 |
FONTGLYPH * |
FONTGLYPH * |
279 |
{ |
{ |
280 |
FONTGLYPH *glyph; |
FONTGLYPH *glyph; |
281 |
|
|
282 |
if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) |
if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0]))) |
283 |
{ |
{ |
284 |
glyph = &fontcache[font][character]; |
glyph = &g_fontcache[font][character]; |
285 |
if (glyph->pixmap != NULL) |
if (glyph->pixmap != NULL) |
286 |
return glyph; |
return glyph; |
287 |
} |
} |
297 |
{ |
{ |
298 |
FONTGLYPH *glyph; |
FONTGLYPH *glyph; |
299 |
|
|
300 |
if ((font < NUM_ELEMENTS(fontcache)) && (character < NUM_ELEMENTS(fontcache[0]))) |
if ((font < NUM_ELEMENTS(g_fontcache)) && (character < NUM_ELEMENTS(g_fontcache[0]))) |
301 |
{ |
{ |
302 |
glyph = &fontcache[font][character]; |
glyph = &g_fontcache[font][character]; |
303 |
if (glyph->pixmap != NULL) |
if (glyph->pixmap != NULL) |
304 |
ui_destroy_glyph(glyph->pixmap); |
ui_destroy_glyph(glyph->pixmap); |
305 |
|
|
317 |
|
|
318 |
|
|
319 |
/* TEXT CACHE */ |
/* TEXT CACHE */ |
320 |
static DATABLOB textcache[256]; |
static DATABLOB g_textcache[256]; |
321 |
|
|
322 |
/* Retrieve a text item from the cache */ |
/* Retrieve a text item from the cache */ |
323 |
DATABLOB * |
DATABLOB * |
325 |
{ |
{ |
326 |
DATABLOB *text; |
DATABLOB *text; |
327 |
|
|
328 |
if (cache_id < NUM_ELEMENTS(textcache)) |
text = &g_textcache[cache_id]; |
329 |
{ |
return text; |
|
text = &textcache[cache_id]; |
|
|
if (text->data != NULL) |
|
|
return text; |
|
|
} |
|
|
|
|
|
error("get text %d\n", cache_id); |
|
|
return NULL; |
|
330 |
} |
} |
331 |
|
|
332 |
/* Store a text item in the cache */ |
/* Store a text item in the cache */ |
335 |
{ |
{ |
336 |
DATABLOB *text; |
DATABLOB *text; |
337 |
|
|
338 |
if (cache_id < NUM_ELEMENTS(textcache)) |
text = &g_textcache[cache_id]; |
339 |
{ |
if (text->data != NULL) |
340 |
text = &textcache[cache_id]; |
xfree(text->data); |
341 |
if (text->data != NULL) |
text->data = xmalloc(length); |
342 |
xfree(text->data); |
text->size = length; |
343 |
|
memcpy(text->data, data, length); |
|
text->data = xmalloc(length); |
|
|
text->size = length; |
|
|
memcpy(text->data, data, length); |
|
|
} |
|
|
else |
|
|
{ |
|
|
error("put text %d\n", cache_id); |
|
|
} |
|
344 |
} |
} |
345 |
|
|
346 |
|
|
347 |
/* DESKTOP CACHE */ |
/* DESKTOP CACHE */ |
348 |
static uint8 deskcache[0x38400 * 4]; |
static uint8 g_deskcache[0x38400 * 4]; |
349 |
|
|
350 |
/* Retrieve desktop data from the cache */ |
/* Retrieve desktop data from the cache */ |
351 |
uint8 * |
uint8 * |
353 |
{ |
{ |
354 |
int length = cx * cy * bytes_per_pixel; |
int length = cx * cy * bytes_per_pixel; |
355 |
|
|
356 |
if ((offset + length) <= sizeof(deskcache)) |
if (offset > sizeof(g_deskcache)) |
357 |
|
offset = 0; |
358 |
|
|
359 |
|
if ((offset + length) <= sizeof(g_deskcache)) |
360 |
{ |
{ |
361 |
return &deskcache[offset]; |
return &g_deskcache[offset]; |
362 |
} |
} |
363 |
|
|
364 |
error("get desktop %d:%d\n", offset, length); |
error("get desktop %d:%d\n", offset, length); |
371 |
{ |
{ |
372 |
int length = cx * cy * bytes_per_pixel; |
int length = cx * cy * bytes_per_pixel; |
373 |
|
|
374 |
if ((offset + length) <= sizeof(deskcache)) |
if (offset > sizeof(g_deskcache)) |
375 |
|
offset = 0; |
376 |
|
|
377 |
|
if ((offset + length) <= sizeof(g_deskcache)) |
378 |
{ |
{ |
379 |
cx *= bytes_per_pixel; |
cx *= bytes_per_pixel; |
380 |
while (cy--) |
while (cy--) |
381 |
{ |
{ |
382 |
memcpy(&deskcache[offset], data, cx); |
memcpy(&g_deskcache[offset], data, cx); |
383 |
data += scanline; |
data += scanline; |
384 |
offset += cx; |
offset += cx; |
385 |
} |
} |
392 |
|
|
393 |
|
|
394 |
/* CURSOR CACHE */ |
/* CURSOR CACHE */ |
395 |
static HCURSOR cursorcache[0x20]; |
static HCURSOR g_cursorcache[0x20]; |
396 |
|
|
397 |
/* Retrieve cursor from cache */ |
/* Retrieve cursor from cache */ |
398 |
HCURSOR |
HCURSOR |
400 |
{ |
{ |
401 |
HCURSOR cursor; |
HCURSOR cursor; |
402 |
|
|
403 |
if (cache_idx < NUM_ELEMENTS(cursorcache)) |
if (cache_idx < NUM_ELEMENTS(g_cursorcache)) |
404 |
{ |
{ |
405 |
cursor = cursorcache[cache_idx]; |
cursor = g_cursorcache[cache_idx]; |
406 |
if (cursor != NULL) |
if (cursor != NULL) |
407 |
return cursor; |
return cursor; |
408 |
} |
} |
417 |
{ |
{ |
418 |
HCURSOR old; |
HCURSOR old; |
419 |
|
|
420 |
if (cache_idx < NUM_ELEMENTS(cursorcache)) |
if (cache_idx < NUM_ELEMENTS(g_cursorcache)) |
421 |
{ |
{ |
422 |
old = cursorcache[cache_idx]; |
old = g_cursorcache[cache_idx]; |
423 |
if (old != NULL) |
if (old != NULL) |
424 |
ui_destroy_cursor(old); |
ui_destroy_cursor(old); |
425 |
|
|
426 |
cursorcache[cache_idx] = cursor; |
g_cursorcache[cache_idx] = cursor; |
427 |
} |
} |
428 |
else |
else |
429 |
{ |
{ |