gfx/cairo/win32-gdi-font-cache.patch@97036ab72558
gfx/cairo/win32-gdi-font-cache.patch
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 # HG changeset patch
2 # User Andrea Canciani <ranma42@gmail.com>, Adrian Johnson <ajohnson@redneon.com>
3 # Date 1354838294 -46800
4 # Node ID 390df735b9d5c5ba07a4d3fe9ca2ebc9e7626a78
5 # Parent e30a5b6a5a003b85fc1ca8b76719a56ef59d976e
6 Bug 717178. Part 2: Import changesets eb29a25d, 6e3e3291 and 101fab7c from upstream.
7 ======
9 From 101fab7cd8a90f7cf3d8113c792b3f8c2a9afb7d Mon Sep 17 00:00:00 2001
10 From: Andrea Canciani <ranma42@gmail.com>
11 Date: Wed, 15 Jun 2011 09:37:36 +0000
12 Subject: win32-font: Improve static data reset function
14 The hashtable is guaranteed to only contain font faces which are
15 currently referenced, hence there is no need to remove any font face
16 when it is reset (just like for toy-font).
18 This makes the function simpler and fixes the assertion
20 Assertion failed: predicate != NULL, file cairo-hash.c, line 373
22 hit by multiple tests (the first one being "clear").
24 See https://bugs.freedesktop.org/show_bug.cgi?id=38049
26 ======
28 From eb29a25dd6dddc511388bf883c9b95843ecdb823 Mon Sep 17 00:00:00 2001
29 From: Adrian Johnson <ajohnson@redneon.com>
30 Date: Tue, 16 Nov 2010 13:18:39 +0000
31 Subject: win32: Use a font_face hash table to provide unique font faces
33 Similar to the freetype and toy font backends, use a hash table
34 to map logfont,hfont to font faces.
36 This fixes the multiple embedding of the same font in PDF.
38 https://bugs.freedesktop.org/show_bug.cgi?id=24849
40 ======
42 From 6e3e329170ab4b96bc0d587c8071e869e228e758 Mon Sep 17 00:00:00 2001
43 From: Adrian Johnson <ajohnson@redneon.com>
44 Date: Thu, 18 Nov 2010 12:37:45 +0000
45 Subject: win32: fix font_face hashing
47 some bugs were discovered while testing with firefox
49 ======
51 diff --git a/gfx/cairo/cairo/src/cairo-debug.c b/gfx/cairo/cairo/src/cairo-debug.c
52 --- a/gfx/cairo/cairo/src/cairo-debug.c
53 +++ b/gfx/cairo/cairo/src/cairo-debug.c
54 @@ -64,16 +64,20 @@ cairo_debug_reset_static_data (void)
55 _cairo_scaled_font_map_destroy ();
57 _cairo_toy_font_face_reset_static_data ();
59 #if CAIRO_HAS_FT_FONT
60 _cairo_ft_font_reset_static_data ();
61 #endif
63 +#if CAIRO_HAS_WIN32_FONT
64 + _cairo_win32_font_reset_static_data ();
65 +#endif
66 +
67 _cairo_intern_string_reset_static_data ();
69 _cairo_scaled_font_reset_static_data ();
71 _cairo_pattern_reset_static_data ();
73 _cairo_clip_reset_static_data ();
75 diff --git a/gfx/cairo/cairo/src/cairo-mutex-list-private.h b/gfx/cairo/cairo/src/cairo-mutex-list-private.h
76 --- a/gfx/cairo/cairo/src/cairo-mutex-list-private.h
77 +++ b/gfx/cairo/cairo/src/cairo-mutex-list-private.h
78 @@ -46,16 +46,20 @@ CAIRO_MUTEX_DECLARE (_cairo_intern_strin
79 CAIRO_MUTEX_DECLARE (_cairo_scaled_font_map_mutex)
80 CAIRO_MUTEX_DECLARE (_cairo_scaled_glyph_page_cache_mutex)
81 CAIRO_MUTEX_DECLARE (_cairo_scaled_font_error_mutex)
83 #if CAIRO_HAS_FT_FONT
84 CAIRO_MUTEX_DECLARE (_cairo_ft_unscaled_font_map_mutex)
85 #endif
87 +#if CAIRO_HAS_WIN32_FONT
88 +CAIRO_MUTEX_DECLARE (_cairo_win32_font_face_mutex)
89 +#endif
90 +
91 #if CAIRO_HAS_XLIB_SURFACE
92 CAIRO_MUTEX_DECLARE (_cairo_xlib_display_mutex)
93 #endif
95 #if CAIRO_HAS_XCB_SURFACE
96 CAIRO_MUTEX_DECLARE (_cairo_xcb_connections_mutex)
97 #endif
99 diff --git a/gfx/cairo/cairo/src/cairo-win32-font.c b/gfx/cairo/cairo/src/cairo-win32-font.c
100 --- a/gfx/cairo/cairo/src/cairo-win32-font.c
101 +++ b/gfx/cairo/cairo/src/cairo-win32-font.c
102 @@ -42,16 +42,18 @@
103 # define _WIN32_WINNT 0x0500
104 #endif
106 #include "cairoint.h"
108 #include "cairo-win32-private.h"
109 #include "cairo-error-private.h"
111 +#include <wchar.h>
112 +
113 #ifndef SPI_GETFONTSMOOTHINGTYPE
114 #define SPI_GETFONTSMOOTHINGTYPE 0x200a
115 #endif
116 #ifndef FE_FONTSMOOTHINGCLEARTYPE
117 #define FE_FONTSMOOTHINGCLEARTYPE 2
118 #endif
119 #ifndef CLEARTYPE_QUALITY
120 #define CLEARTYPE_QUALITY 5
121 @@ -1887,19 +1889,17 @@ struct _cairo_win32_font_face {
122 cairo_font_face_t base;
123 LOGFONTW logfont;
124 HFONT hfont;
125 };
127 /* implement the platform-specific interface */
129 static void
130 -_cairo_win32_font_face_destroy (void *abstract_face)
131 -{
132 -}
133 +_cairo_win32_font_face_destroy (void *abstract_face);
135 static cairo_bool_t
136 _is_scale (const cairo_matrix_t *matrix, double scale)
137 {
138 return matrix->xx == scale && matrix->yy == scale &&
139 matrix->xy == 0. && matrix->yx == 0. &&
140 matrix->x0 == 0. && matrix->y0 == 0.;
141 }
142 @@ -1932,16 +1932,128 @@ static cairo_status_t
144 const cairo_font_face_backend_t _cairo_win32_font_face_backend = {
145 CAIRO_FONT_TYPE_WIN32,
146 _cairo_win32_font_face_create_for_toy,
147 _cairo_win32_font_face_destroy,
148 _cairo_win32_font_face_scaled_font_create
149 };
151 +/* We maintain a hash table from LOGFONT,HFONT => #cairo_font_face_t.
152 + * The primary purpose of this mapping is to provide unique
153 + * #cairo_font_face_t values so that our cache and mapping from
154 + * #cairo_font_face_t => #cairo_scaled_font_t works. Once the
155 + * corresponding #cairo_font_face_t objects fall out of downstream
156 + * caches, we don't need them in this hash table anymore.
157 + *
158 + * Modifications to this hash table are protected by
159 + * _cairo_win32_font_face_mutex.
160 + */
161 +
162 +static cairo_hash_table_t *cairo_win32_font_face_hash_table = NULL;
163 +
164 +static int
165 +_cairo_win32_font_face_keys_equal (const void *key_a,
166 + const void *key_b);
167 +
168 +static void
169 +_cairo_win32_font_face_hash_table_destroy (void)
170 +{
171 + cairo_hash_table_t *hash_table;
172 +
173 + /* We manually acquire the lock rather than calling
174 + * _cairo_win32_font_face_hash_table_lock simply to avoid creating
175 + * the table only to destroy it again. */
176 + CAIRO_MUTEX_LOCK (_cairo_win32_font_face_mutex);
177 + hash_table = cairo_win32_font_face_hash_table;
178 + cairo_win32_font_face_hash_table = NULL;
179 + CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
180 +
181 + if (hash_table != NULL)
182 + _cairo_hash_table_destroy (hash_table);
183 +}
184 +
185 +static cairo_hash_table_t *
186 +_cairo_win32_font_face_hash_table_lock (void)
187 +{
188 + CAIRO_MUTEX_LOCK (_cairo_win32_font_face_mutex);
189 +
190 + if (unlikely (cairo_win32_font_face_hash_table == NULL))
191 + {
192 + cairo_win32_font_face_hash_table =
193 + _cairo_hash_table_create (_cairo_win32_font_face_keys_equal);
194 +
195 + if (unlikely (cairo_win32_font_face_hash_table == NULL)) {
196 + CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
197 + _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
198 + return NULL;
199 + }
200 + }
201 +
202 + return cairo_win32_font_face_hash_table;
203 +}
204 +
205 +static void
206 +_cairo_win32_font_face_hash_table_unlock (void)
207 +{
208 + CAIRO_MUTEX_UNLOCK (_cairo_win32_font_face_mutex);
209 +}
210 +
211 +static void
212 +_cairo_win32_font_face_init_key (cairo_win32_font_face_t *key,
213 + LOGFONTW *logfont,
214 + HFONT font)
215 +{
216 + unsigned long hash = _CAIRO_HASH_INIT_VALUE;
217 +
218 + key->logfont = *logfont;
219 + key->hfont = font;
220 +
221 + hash = _cairo_hash_bytes (0, logfont->lfFaceName, 2*wcslen(logfont->lfFaceName));
222 + hash = _cairo_hash_bytes (hash, &logfont->lfWeight, sizeof(logfont->lfWeight));
223 + hash = _cairo_hash_bytes (hash, &logfont->lfItalic, sizeof(logfont->lfItalic));
224 +
225 + key->base.hash_entry.hash = hash;
226 +}
227 +
228 +static int
229 +_cairo_win32_font_face_keys_equal (const void *key_a,
230 + const void *key_b)
231 +{
232 + const cairo_win32_font_face_t *face_a = key_a;
233 + const cairo_win32_font_face_t *face_b = key_b;
234 +
235 + if (face_a->logfont.lfWeight == face_b->logfont.lfWeight &&
236 + face_a->logfont.lfItalic == face_b->logfont.lfItalic &&
237 + face_a->logfont.lfUnderline == face_b->logfont.lfUnderline &&
238 + face_a->logfont.lfStrikeOut == face_b->logfont.lfStrikeOut &&
239 + face_a->logfont.lfCharSet == face_b->logfont.lfCharSet &&
240 + face_a->logfont.lfOutPrecision == face_b->logfont.lfOutPrecision &&
241 + face_a->logfont.lfClipPrecision == face_b->logfont.lfClipPrecision &&
242 + face_a->logfont.lfPitchAndFamily == face_b->logfont.lfPitchAndFamily &&
243 + (wcscmp (face_a->logfont.lfFaceName, face_b->logfont.lfFaceName) == 0))
244 + return TRUE;
245 + else
246 + return FALSE;
247 +}
248 +
249 +static void
250 +_cairo_win32_font_face_destroy (void *abstract_face)
251 +{
252 + cairo_hash_table_t *hash_table;
253 + cairo_win32_font_face_t *font_face = abstract_face;
254 +
255 + hash_table = _cairo_win32_font_face_hash_table_lock ();
256 + if (unlikely (hash_table == NULL)) {
257 + return;
258 + }
259 + _cairo_hash_table_remove (hash_table, &font_face->base.hash_entry);
260 + _cairo_win32_font_face_hash_table_unlock ();
261 +}
262 +
263 /**
264 * cairo_win32_font_face_create_for_logfontw_hfont:
265 * @logfont: A #LOGFONTW structure specifying the font to use.
266 * If @font is %NULL then the lfHeight, lfWidth, lfOrientation and lfEscapement
267 * fields of this structure are ignored. Otherwise lfWidth, lfOrientation and
268 * lfEscapement must be zero.
269 * @font: An #HFONT that can be used when the font matrix is a scale by
270 * -lfHeight and the CTM is identity.
271 @@ -1954,30 +2066,61 @@ const cairo_font_face_backend_t _cairo_w
272 * and can be used with functions such as cairo_win32_scaled_font_select_font().
273 *
274 * Return value: a newly created #cairo_font_face_t. Free with
275 * cairo_font_face_destroy() when you are done using it.
276 **/
277 cairo_font_face_t *
278 cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font)
279 {
280 - cairo_win32_font_face_t *font_face;
281 + cairo_win32_font_face_t *font_face, key;
282 + cairo_hash_table_t *hash_table;
283 + cairo_status_t status;
285 + hash_table = _cairo_win32_font_face_hash_table_lock ();
286 + if (unlikely (hash_table == NULL)) {
287 + _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
288 + return (cairo_font_face_t *)&_cairo_font_face_nil;
289 + }
290 +
291 + _cairo_win32_font_face_init_key (&key, logfont, font);
292 +
293 + /* Return existing unscaled font if it exists in the hash table. */
294 + font_face = _cairo_hash_table_lookup (hash_table,
295 + &key.base.hash_entry);
296 + if (font_face != NULL) {
297 + cairo_font_face_reference (&font_face->base);
298 + goto DONE;
299 + }
300 +
301 + /* Otherwise create it and insert into hash table. */
302 font_face = malloc (sizeof (cairo_win32_font_face_t));
303 if (!font_face) {
304 _cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
305 - return (cairo_font_face_t *)&_cairo_font_face_nil;
306 + goto FAIL;
307 }
309 - font_face->logfont = *logfont;
310 - font_face->hfont = font;
311 -
312 + _cairo_win32_font_face_init_key (font_face, logfont, font);
313 _cairo_font_face_init (&font_face->base, &_cairo_win32_font_face_backend);
315 + assert (font_face->base.hash_entry.hash == key.base.hash_entry.hash);
316 + status = _cairo_hash_table_insert (hash_table,
317 + &font_face->base.hash_entry);
318 + if (unlikely (status))
319 + goto FAIL;
320 +
321 +DONE:
322 + _cairo_win32_font_face_hash_table_unlock ();
323 +
324 return &font_face->base;
325 +
326 +FAIL:
327 + _cairo_win32_font_face_hash_table_unlock ();
328 +
329 + return (cairo_font_face_t *)&_cairo_font_face_nil;
330 }
332 /**
333 * cairo_win32_font_face_create_for_logfontw:
334 * @logfont: A #LOGFONTW structure specifying the font to use.
335 * The lfHeight, lfWidth, lfOrientation and lfEscapement
336 * fields of this structure are ignored.
337 *
338 @@ -2176,8 +2319,14 @@ cairo_win32_scaled_font_get_device_to_lo
339 cairo_win32_scaled_font_t *win_font = (cairo_win32_scaled_font_t *)scaled_font;
340 if (! _cairo_scaled_font_is_win32 (scaled_font)) {
341 _cairo_error_throw (CAIRO_STATUS_FONT_TYPE_MISMATCH);
342 cairo_matrix_init_identity (device_to_logical);
343 return;
344 }
345 *device_to_logical = win_font->device_to_logical;
346 }
347 +
348 +void
349 +_cairo_win32_font_reset_static_data (void)
350 +{
351 + _cairo_win32_font_face_hash_table_destroy ();
352 +}
353 diff --git a/gfx/cairo/cairo/src/cairoint.h b/gfx/cairo/cairo/src/cairoint.h
354 --- a/gfx/cairo/cairo/src/cairoint.h
355 +++ b/gfx/cairo/cairo/src/cairoint.h
356 @@ -403,16 +403,19 @@ cairo_private void
357 _cairo_reset_static_data (void);
359 cairo_private void
360 _cairo_toy_font_face_reset_static_data (void);
362 cairo_private void
363 _cairo_ft_font_reset_static_data (void);
365 +cairo_private void
366 +_cairo_win32_font_reset_static_data (void);
367 +
368 /* the font backend interface */
370 struct _cairo_unscaled_font_backend {
371 void (*destroy) (void *unscaled_font);
372 };
374 /* #cairo_toy_font_face_t - simple family/slant/weight font faces used for
375 * the built-in font API
