| File: | root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c |
| Warning: | line 271, column 6 Value stored to 'status' is never read |
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| 1 | /* Cairo - a vector graphics library with display and print output |
| 2 | * |
| 3 | * Copyright © 2009 Intel Corporation |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it either under the terms of the GNU Lesser General Public |
| 7 | * License version 2.1 as published by the Free Software Foundation |
| 8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
| 9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
| 10 | * notice, a recipient may use your version of this file under either |
| 11 | * the MPL or the LGPL. |
| 12 | * |
| 13 | * You should have received a copy of the LGPL along with this library |
| 14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
| 16 | * You should have received a copy of the MPL along with this library |
| 17 | * in the file COPYING-MPL-1.1 |
| 18 | * |
| 19 | * The contents of this file are subject to the Mozilla Public License |
| 20 | * Version 1.1 (the "License"); you may not use this file except in |
| 21 | * compliance with the License. You may obtain a copy of the License at |
| 22 | * http://www.mozilla.org/MPL/ |
| 23 | * |
| 24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
| 25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
| 26 | * the specific language governing rights and limitations. |
| 27 | * |
| 28 | * The Original Code is the cairo graphics library. |
| 29 | * |
| 30 | * The Initial Developer of the Original Code is Intel Corporation. |
| 31 | * |
| 32 | * Contributors(s): |
| 33 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 34 | */ |
| 35 | |
| 36 | #include "cairoint.h" |
| 37 | #include "cairo-device-private.h" |
| 38 | #include "cairo-error-private.h" |
| 39 | |
| 40 | /** |
| 41 | * SECTION:cairo-device |
| 42 | * @Title: cairo_device_t |
| 43 | * @Short_Description: interface to underlying rendering system |
| 44 | * @See_Also: #cairo_surface_t |
| 45 | * |
| 46 | * Devices are the abstraction Cairo employs for the rendering system |
| 47 | * used by a #cairo_surface_t. You can get the device of a surface using |
| 48 | * cairo_surface_get_device(). |
| 49 | * |
| 50 | * Devices are created using custom functions specific to the rendering |
| 51 | * system you want to use. See the documentation for the surface types |
| 52 | * for those functions. |
| 53 | * |
| 54 | * An important function that devices fulfill is sharing access to the |
| 55 | * rendering system between Cairo and your application. If you want to |
| 56 | * access a device directly that you used to draw to with Cairo, you must |
| 57 | * first call cairo_device_flush() to ensure that Cairo finishes all |
| 58 | * operations on the device and resets it to a clean state. |
| 59 | * |
| 60 | * Cairo also provides the functions cairo_device_acquire() and |
| 61 | * cairo_device_release() to synchronize access to the rendering system |
| 62 | * in a multithreaded environment. This is done internally, but can also |
| 63 | * be used by applications. |
| 64 | * |
| 65 | * Putting this all together, a function that works with devices should |
| 66 | * look something like this: |
| 67 | * <informalexample><programlisting> |
| 68 | * void |
| 69 | * my_device_modifying_function (cairo_device_t *device) |
| 70 | * { |
| 71 | * cairo_status_t status; |
| 72 | * |
| 73 | * // Ensure the device is properly reset |
| 74 | * cairo_device_flush (device); |
| 75 | * // Try to acquire the device |
| 76 | * status = cairo_device_acquire (device); |
| 77 | * if (status != CAIRO_STATUS_SUCCESS) { |
| 78 | * printf ("Failed to acquire the device: %s\n", cairo_status_to_string (status)); |
| 79 | * return; |
| 80 | * } |
| 81 | * |
| 82 | * // Do the custom operations on the device here. |
| 83 | * // But do not call any Cairo functions that might acquire devices. |
| 84 | * |
| 85 | * // Release the device when done. |
| 86 | * cairo_device_release (device); |
| 87 | * } |
| 88 | * </programlisting></informalexample> |
| 89 | * |
| 90 | * <note><para>Please refer to the documentation of each backend for |
| 91 | * additional usage requirements, guarantees provided, and |
| 92 | * interactions with existing surface API of the device functions for |
| 93 | * surfaces of that type. |
| 94 | * </para></note> |
| 95 | **/ |
| 96 | |
| 97 | static const cairo_device_t _nil_device = { |
| 98 | CAIRO_REFERENCE_COUNT_INVALID{((cairo_atomic_int_t) -1)}, |
| 99 | CAIRO_STATUS_NO_MEMORY, |
| 100 | }; |
| 101 | |
| 102 | static const cairo_device_t _mismatch_device = { |
| 103 | CAIRO_REFERENCE_COUNT_INVALID{((cairo_atomic_int_t) -1)}, |
| 104 | CAIRO_STATUS_DEVICE_TYPE_MISMATCH, |
| 105 | }; |
| 106 | |
| 107 | static const cairo_device_t _invalid_device = { |
| 108 | CAIRO_REFERENCE_COUNT_INVALID{((cairo_atomic_int_t) -1)}, |
| 109 | CAIRO_STATUS_DEVICE_ERROR, |
| 110 | }; |
| 111 | |
| 112 | cairo_device_t * |
| 113 | _cairo_device_create_in_error (cairo_status_t status) |
| 114 | { |
| 115 | switch (status) { |
| 116 | case CAIRO_STATUS_NO_MEMORY: |
| 117 | return (cairo_device_t *) &_nil_device; |
| 118 | case CAIRO_STATUS_DEVICE_ERROR: |
| 119 | return (cairo_device_t *) &_invalid_device; |
| 120 | case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: |
| 121 | return (cairo_device_t *) &_mismatch_device; |
| 122 | |
| 123 | case CAIRO_STATUS_SUCCESS: |
| 124 | case CAIRO_STATUS_LAST_STATUS: |
| 125 | ASSERT_NOT_REACHEDdo { ((void) sizeof ((!"reached") ? 1 : 0), __extension__ ({ if (!"reached") ; else __assert_fail ("!\"reached\"", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c" , 125, __extension__ __PRETTY_FUNCTION__); })); } while (0); |
| 126 | /* fall-through */ |
| 127 | case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: |
| 128 | case CAIRO_STATUS_INVALID_STATUS: |
| 129 | case CAIRO_STATUS_INVALID_FORMAT: |
| 130 | case CAIRO_STATUS_INVALID_VISUAL: |
| 131 | case CAIRO_STATUS_READ_ERROR: |
| 132 | case CAIRO_STATUS_WRITE_ERROR: |
| 133 | case CAIRO_STATUS_FILE_NOT_FOUND: |
| 134 | case CAIRO_STATUS_TEMP_FILE_ERROR: |
| 135 | case CAIRO_STATUS_INVALID_STRIDE: |
| 136 | case CAIRO_STATUS_INVALID_SIZE: |
| 137 | case CAIRO_STATUS_INVALID_RESTORE: |
| 138 | case CAIRO_STATUS_INVALID_POP_GROUP: |
| 139 | case CAIRO_STATUS_NO_CURRENT_POINT: |
| 140 | case CAIRO_STATUS_INVALID_MATRIX: |
| 141 | case CAIRO_STATUS_NULL_POINTER: |
| 142 | case CAIRO_STATUS_INVALID_STRING: |
| 143 | case CAIRO_STATUS_INVALID_PATH_DATA: |
| 144 | case CAIRO_STATUS_SURFACE_FINISHED: |
| 145 | case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: |
| 146 | case CAIRO_STATUS_INVALID_DASH: |
| 147 | case CAIRO_STATUS_INVALID_DSC_COMMENT: |
| 148 | case CAIRO_STATUS_INVALID_INDEX: |
| 149 | case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: |
| 150 | case CAIRO_STATUS_FONT_TYPE_MISMATCH: |
| 151 | case CAIRO_STATUS_USER_FONT_IMMUTABLE: |
| 152 | case CAIRO_STATUS_USER_FONT_ERROR: |
| 153 | case CAIRO_STATUS_NEGATIVE_COUNT: |
| 154 | case CAIRO_STATUS_INVALID_CLUSTERS: |
| 155 | case CAIRO_STATUS_INVALID_SLANT: |
| 156 | case CAIRO_STATUS_INVALID_WEIGHT: |
| 157 | case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: |
| 158 | case CAIRO_STATUS_INVALID_CONTENT: |
| 159 | case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: |
| 160 | case CAIRO_STATUS_DEVICE_FINISHED: |
| 161 | case CAIRO_STATUS_JBIG2_GLOBAL_MISSING: |
| 162 | case CAIRO_STATUS_PNG_ERROR: |
| 163 | case CAIRO_STATUS_FREETYPE_ERROR: |
| 164 | case CAIRO_STATUS_WIN32_GDI_ERROR: |
| 165 | case CAIRO_STATUS_TAG_ERROR: |
| 166 | case CAIRO_STATUS_DWRITE_ERROR: |
| 167 | case CAIRO_STATUS_SVG_FONT_ERROR: |
| 168 | default: |
| 169 | _cairo_error_throw (CAIRO_STATUS_NO_MEMORY)do { cairo_status_t status__ = _cairo_error (CAIRO_STATUS_NO_MEMORY ); (void) status__; } while (0); |
| 170 | return (cairo_device_t *) &_nil_device; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | void |
| 175 | _cairo_device_init (cairo_device_t *device, |
| 176 | const cairo_device_backend_t *backend) |
| 177 | { |
| 178 | CAIRO_REFERENCE_COUNT_INIT (&device->ref_count, 1)((&device->ref_count)->ref_count = (1)); |
| 179 | device->status = CAIRO_STATUS_SUCCESS; |
| 180 | |
| 181 | device->backend = backend; |
| 182 | |
| 183 | CAIRO_RECURSIVE_MUTEX_INIT (device->mutex)do { pthread_mutexattr_t attr; pthread_mutexattr_init (&attr ); pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE ); pthread_mutex_init (&(device->mutex), &attr); pthread_mutexattr_destroy (&attr); } while (0); |
| 184 | device->mutex_depth = 0; |
| 185 | |
| 186 | device->finished = FALSE0; |
| 187 | |
| 188 | _cairo_user_data_array_init (&device->user_data); |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * cairo_device_reference: |
| 193 | * @device: a #cairo_device_t |
| 194 | * |
| 195 | * Increases the reference count on @device by one. This prevents |
| 196 | * @device from being destroyed until a matching call to |
| 197 | * cairo_device_destroy() is made. |
| 198 | * |
| 199 | * Use cairo_device_get_reference_count() to get the number of references |
| 200 | * to a #cairo_device_t. |
| 201 | * |
| 202 | * Return value: the referenced #cairo_device_t. |
| 203 | * |
| 204 | * Since: 1.10 |
| 205 | **/ |
| 206 | cairo_device_t * |
| 207 | cairo_device_reference_moz_cairo_device_reference (cairo_device_t *device) |
| 208 | { |
| 209 | if (device == NULL((void*)0) || |
| 210 | CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count)(_cairo_atomic_int_get (&(&device->ref_count)-> ref_count) == ((cairo_atomic_int_t) -1))) |
| 211 | { |
| 212 | return device; |
| 213 | } |
| 214 | |
| 215 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&device->ref_count))((void) sizeof (((_cairo_atomic_int_get (&(&device-> ref_count)->ref_count) > 0)) ? 1 : 0), __extension__ ({ if ((_cairo_atomic_int_get (&(&device->ref_count) ->ref_count) > 0)) ; else __assert_fail ("CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&device->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c", 215 , __extension__ __PRETTY_FUNCTION__); })); |
| 216 | _cairo_reference_count_inc (&device->ref_count)((void) __atomic_fetch_add(&(&device->ref_count)-> ref_count, 1, 5)); |
| 217 | |
| 218 | return device; |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * cairo_device_status: |
| 223 | * @device: a #cairo_device_t |
| 224 | * |
| 225 | * Checks whether an error has previously occurred for this |
| 226 | * device. |
| 227 | * |
| 228 | * Return value: %CAIRO_STATUS_SUCCESS on success or an error code if |
| 229 | * the device is in an error state. |
| 230 | * |
| 231 | * Since: 1.10 |
| 232 | **/ |
| 233 | cairo_status_t |
| 234 | cairo_device_status_moz_cairo_device_status (cairo_device_t *device) |
| 235 | { |
| 236 | if (device == NULL((void*)0)) |
| 237 | return CAIRO_STATUS_NULL_POINTER; |
| 238 | |
| 239 | return device->status; |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * cairo_device_flush: |
| 244 | * @device: a #cairo_device_t |
| 245 | * |
| 246 | * Finish any pending operations for the device and also restore any |
| 247 | * temporary modifications cairo has made to the device's state. |
| 248 | * This function must be called before switching from using the |
| 249 | * device with Cairo to operating on it directly with native APIs. |
| 250 | * If the device doesn't support direct access, then this function |
| 251 | * does nothing. |
| 252 | * |
| 253 | * This function may acquire devices. |
| 254 | * |
| 255 | * Since: 1.10 |
| 256 | **/ |
| 257 | void |
| 258 | cairo_device_flush_moz_cairo_device_flush (cairo_device_t *device) |
| 259 | { |
| 260 | cairo_status_t status; |
| 261 | |
| 262 | if (device == NULL((void*)0) || device->status) |
| 263 | return; |
| 264 | |
| 265 | if (device->finished) |
| 266 | return; |
| 267 | |
| 268 | if (device->backend->flush != NULL((void*)0)) { |
| 269 | status = device->backend->flush (device); |
| 270 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 271 | status = _cairo_device_set_error (device, status); |
Value stored to 'status' is never read | |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * cairo_device_finish: |
| 277 | * @device: the #cairo_device_t to finish |
| 278 | * |
| 279 | * This function finishes the device and drops all references to |
| 280 | * external resources. All surfaces, fonts and other objects created |
| 281 | * for this @device will be finished, too. |
| 282 | * Further operations on the @device will not affect the @device but |
| 283 | * will instead trigger a %CAIRO_STATUS_DEVICE_FINISHED error. |
| 284 | * |
| 285 | * When the last call to cairo_device_destroy() decreases the |
| 286 | * reference count to zero, cairo will call cairo_device_finish() if |
| 287 | * it hasn't been called already, before freeing the resources |
| 288 | * associated with the device. |
| 289 | * |
| 290 | * This function may acquire devices. |
| 291 | * |
| 292 | * Since: 1.10 |
| 293 | **/ |
| 294 | void |
| 295 | cairo_device_finish_moz_cairo_device_finish (cairo_device_t *device) |
| 296 | { |
| 297 | if (device == NULL((void*)0) || |
| 298 | CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count)(_cairo_atomic_int_get (&(&device->ref_count)-> ref_count) == ((cairo_atomic_int_t) -1))) |
| 299 | { |
| 300 | return; |
| 301 | } |
| 302 | |
| 303 | if (device->finished) |
| 304 | return; |
| 305 | |
| 306 | cairo_device_flush_moz_cairo_device_flush (device); |
| 307 | |
| 308 | if (device->backend->finish != NULL((void*)0)) |
| 309 | device->backend->finish (device); |
| 310 | |
| 311 | /* We only finish the device after the backend's callback returns because |
| 312 | * the device might still be needed during the callback |
| 313 | * (e.g. for cairo_device_acquire ()). |
| 314 | */ |
| 315 | device->finished = TRUE1; |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * cairo_device_destroy: |
| 320 | * @device: a #cairo_device_t |
| 321 | * |
| 322 | * Decreases the reference count on @device by one. If the result is |
| 323 | * zero, then @device and all associated resources are freed. See |
| 324 | * cairo_device_reference(). |
| 325 | * |
| 326 | * This function may acquire devices if the last reference was dropped. |
| 327 | * |
| 328 | * Since: 1.10 |
| 329 | **/ |
| 330 | void |
| 331 | cairo_device_destroy_moz_cairo_device_destroy (cairo_device_t *device) |
| 332 | { |
| 333 | cairo_user_data_array_t user_data; |
| 334 | |
| 335 | if (device == NULL((void*)0) || |
| 336 | CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count)(_cairo_atomic_int_get (&(&device->ref_count)-> ref_count) == ((cairo_atomic_int_t) -1))) |
| 337 | { |
| 338 | return; |
| 339 | } |
| 340 | |
| 341 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&device->ref_count))((void) sizeof (((_cairo_atomic_int_get (&(&device-> ref_count)->ref_count) > 0)) ? 1 : 0), __extension__ ({ if ((_cairo_atomic_int_get (&(&device->ref_count) ->ref_count) > 0)) ; else __assert_fail ("CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&device->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c", 341 , __extension__ __PRETTY_FUNCTION__); })); |
| 342 | if (! _cairo_reference_count_dec_and_test (&device->ref_count)(__atomic_fetch_sub(&(&device->ref_count)->ref_count , 1, 5) == 1)) |
| 343 | return; |
| 344 | |
| 345 | cairo_device_finish_moz_cairo_device_finish (device); |
| 346 | |
| 347 | assert (device->mutex_depth == 0)((void) sizeof ((device->mutex_depth == 0) ? 1 : 0), __extension__ ({ if (device->mutex_depth == 0) ; else __assert_fail ("device->mutex_depth == 0" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c", 347 , __extension__ __PRETTY_FUNCTION__); })); |
| 348 | CAIRO_MUTEX_FINI (device->mutex)pthread_mutex_destroy (&(device->mutex)); |
| 349 | |
| 350 | user_data = device->user_data; |
| 351 | |
| 352 | device->backend->destroy (device); |
| 353 | |
| 354 | _cairo_user_data_array_fini (&user_data); |
| 355 | |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * cairo_device_get_type: |
| 360 | * @device: a #cairo_device_t |
| 361 | * |
| 362 | * This function returns the type of the device. See #cairo_device_type_t |
| 363 | * for available types. |
| 364 | * |
| 365 | * Return value: The type of @device. |
| 366 | * |
| 367 | * Since: 1.10 |
| 368 | **/ |
| 369 | cairo_device_type_t |
| 370 | cairo_device_get_type_moz_cairo_device_get_type (cairo_device_t *device) |
| 371 | { |
| 372 | if (device == NULL((void*)0) || |
| 373 | CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count)(_cairo_atomic_int_get (&(&device->ref_count)-> ref_count) == ((cairo_atomic_int_t) -1))) |
| 374 | { |
| 375 | return CAIRO_DEVICE_TYPE_INVALID; |
| 376 | } |
| 377 | |
| 378 | return device->backend->type; |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * cairo_device_acquire: |
| 383 | * @device: a #cairo_device_t |
| 384 | * |
| 385 | * Acquires the @device for the current thread. This function will block |
| 386 | * until no other thread has acquired the device. |
| 387 | * |
| 388 | * If the return value is %CAIRO_STATUS_SUCCESS, you successfully acquired the |
| 389 | * device. From now on your thread owns the device and no other thread will be |
| 390 | * able to acquire it until a matching call to cairo_device_release(). It is |
| 391 | * allowed to recursively acquire the device multiple times from the same |
| 392 | * thread. |
| 393 | * |
| 394 | * <note><para>You must never acquire two different devices at the same time |
| 395 | * unless this is explicitly allowed. Otherwise the possibility of deadlocks |
| 396 | * exist. |
| 397 | * |
| 398 | * As various Cairo functions can acquire devices when called, these functions |
| 399 | * may also cause deadlocks when you call them with an acquired device. So you |
| 400 | * must not have a device acquired when calling them. These functions are |
| 401 | * marked in the documentation. |
| 402 | * </para></note> |
| 403 | * |
| 404 | * Return value: %CAIRO_STATUS_SUCCESS on success or an error code if |
| 405 | * the device is in an error state and could not be |
| 406 | * acquired. After a successful call to cairo_device_acquire(), |
| 407 | * a matching call to cairo_device_release() is required. |
| 408 | * |
| 409 | * Since: 1.10 |
| 410 | **/ |
| 411 | cairo_status_t |
| 412 | cairo_device_acquire_moz_cairo_device_acquire (cairo_device_t *device) |
| 413 | { |
| 414 | if (device == NULL((void*)0)) |
| 415 | return CAIRO_STATUS_SUCCESS; |
| 416 | |
| 417 | if (unlikely (device->status)(__builtin_expect (!!(device->status), 0))) |
| 418 | return device->status; |
| 419 | |
| 420 | if (unlikely (device->finished)(__builtin_expect (!!(device->finished), 0))) |
| 421 | return _cairo_device_set_error (device, CAIRO_STATUS_DEVICE_FINISHED); |
| 422 | |
| 423 | CAIRO_MUTEX_LOCK (device->mutex)pthread_mutex_lock (&(device->mutex)); |
| 424 | if (device->mutex_depth++ == 0) { |
| 425 | if (device->backend->lock != NULL((void*)0)) |
| 426 | device->backend->lock (device); |
| 427 | } |
| 428 | |
| 429 | return CAIRO_STATUS_SUCCESS; |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * cairo_device_release: |
| 434 | * @device: a #cairo_device_t |
| 435 | * |
| 436 | * Releases a @device previously acquired using cairo_device_acquire(). See |
| 437 | * that function for details. |
| 438 | * |
| 439 | * Since: 1.10 |
| 440 | **/ |
| 441 | void |
| 442 | cairo_device_release_moz_cairo_device_release (cairo_device_t *device) |
| 443 | { |
| 444 | if (device == NULL((void*)0)) |
| 445 | return; |
| 446 | |
| 447 | assert (device->mutex_depth > 0)((void) sizeof ((device->mutex_depth > 0) ? 1 : 0), __extension__ ({ if (device->mutex_depth > 0) ; else __assert_fail ( "device->mutex_depth > 0", "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c" , 447, __extension__ __PRETTY_FUNCTION__); })); |
| 448 | |
| 449 | if (--device->mutex_depth == 0) { |
| 450 | if (device->backend->unlock != NULL((void*)0)) |
| 451 | device->backend->unlock (device); |
| 452 | } |
| 453 | |
| 454 | CAIRO_MUTEX_UNLOCK (device->mutex)pthread_mutex_unlock (&(device->mutex)); |
| 455 | } |
| 456 | |
| 457 | cairo_status_t |
| 458 | _cairo_device_set_error (cairo_device_t *device, |
| 459 | cairo_status_t status) |
| 460 | { |
| 461 | if (status == CAIRO_STATUS_SUCCESS) |
| 462 | return CAIRO_STATUS_SUCCESS; |
| 463 | |
| 464 | _cairo_status_set_error (&device->status, status)do { int ret__; ((void) sizeof ((status < CAIRO_STATUS_LAST_STATUS ) ? 1 : 0), __extension__ ({ if (status < CAIRO_STATUS_LAST_STATUS ) ; else __assert_fail ("status < CAIRO_STATUS_LAST_STATUS" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c", 464 , __extension__ __PRETTY_FUNCTION__); })); ((void) sizeof ((sizeof (*&device->status) == sizeof(cairo_atomic_int_t)) ? 1 : 0), __extension__ ({ if (sizeof(*&device->status) == sizeof (cairo_atomic_int_t)) ; else __assert_fail ("sizeof(*&device->status) == sizeof(cairo_atomic_int_t)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo-device.c", 464 , __extension__ __PRETTY_FUNCTION__); })); ret__ = _cairo_atomic_int_cmpxchg_impl ((cairo_atomic_int_t *) &device->status, CAIRO_STATUS_SUCCESS , status); (void) ret__; } while (0); |
| 465 | |
| 466 | return _cairo_error (status); |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * cairo_device_get_reference_count: |
| 471 | * @device: a #cairo_device_t |
| 472 | * |
| 473 | * Returns the current reference count of @device. |
| 474 | * |
| 475 | * Return value: the current reference count of @device. If the |
| 476 | * object is a nil object, 0 will be returned. |
| 477 | * |
| 478 | * Since: 1.10 |
| 479 | **/ |
| 480 | unsigned int |
| 481 | cairo_device_get_reference_count_moz_cairo_device_get_reference_count (cairo_device_t *device) |
| 482 | { |
| 483 | if (device == NULL((void*)0) || |
| 484 | CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count)(_cairo_atomic_int_get (&(&device->ref_count)-> ref_count) == ((cairo_atomic_int_t) -1))) |
| 485 | return 0; |
| 486 | |
| 487 | return CAIRO_REFERENCE_COUNT_GET_VALUE (&device->ref_count)_cairo_atomic_int_get (&(&device->ref_count)->ref_count ); |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | * cairo_device_get_user_data: |
| 492 | * @device: a #cairo_device_t |
| 493 | * @key: the address of the #cairo_user_data_key_t the user data was |
| 494 | * attached to |
| 495 | * |
| 496 | * Return user data previously attached to @device using the |
| 497 | * specified key. If no user data has been attached with the given |
| 498 | * key this function returns %NULL. |
| 499 | * |
| 500 | * Return value: the user data previously attached or %NULL. |
| 501 | * |
| 502 | * Since: 1.10 |
| 503 | **/ |
| 504 | void * |
| 505 | cairo_device_get_user_data_moz_cairo_device_get_user_data (cairo_device_t *device, |
| 506 | const cairo_user_data_key_t *key) |
| 507 | { |
| 508 | return _cairo_user_data_array_get_data (&device->user_data, |
| 509 | key); |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * cairo_device_set_user_data: |
| 514 | * @device: a #cairo_device_t |
| 515 | * @key: the address of a #cairo_user_data_key_t to attach the user data to |
| 516 | * @user_data: the user data to attach to the #cairo_device_t |
| 517 | * @destroy: a #cairo_destroy_func_t which will be called when the |
| 518 | * #cairo_t is destroyed or when new user data is attached using the |
| 519 | * same key. |
| 520 | * |
| 521 | * Attach user data to @device. To remove user data from a surface, |
| 522 | * call this function with the key that was used to set it and %NULL |
| 523 | * for @data. |
| 524 | * |
| 525 | * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a |
| 526 | * slot could not be allocated for the user data. |
| 527 | * |
| 528 | * Since: 1.10 |
| 529 | **/ |
| 530 | cairo_status_t |
| 531 | cairo_device_set_user_data_moz_cairo_device_set_user_data (cairo_device_t *device, |
| 532 | const cairo_user_data_key_t *key, |
| 533 | void *user_data, |
| 534 | cairo_destroy_func_t destroy) |
| 535 | { |
| 536 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&device->ref_count)(_cairo_atomic_int_get (&(&device->ref_count)-> ref_count) == ((cairo_atomic_int_t) -1))) |
| 537 | return device->status; |
| 538 | |
| 539 | return _cairo_user_data_array_set_data (&device->user_data, |
| 540 | key, user_data, destroy); |
| 541 | } |