Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 1 | #include <stdlib.h> |
| 2 | #include <string.h> |
| 3 | #include "eglcurrent.h" |
| 4 | #include "eglcontext.h" |
| 5 | #include "egllog.h" |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 6 | #include "eglmutex.h" |
Chia-I Wu | 64e7bb3 | 2009-08-10 16:45:12 +0800 | [diff] [blame] | 7 | #include "eglglobals.h" |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 8 | |
| 9 | |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 10 | /* This should be kept in sync with _eglInitThreadInfo() */ |
| 11 | #define _EGL_THREAD_INFO_INITIALIZER \ |
Chia-I Wu | 310c768 | 2009-08-17 15:53:54 +0800 | [diff] [blame] | 12 | { EGL_SUCCESS, { NULL }, 0 } |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 13 | |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 14 | /* a fallback thread info to guarantee that every thread always has one */ |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 15 | static _EGLThreadInfo dummy_thread = _EGL_THREAD_INFO_INITIALIZER; |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 16 | |
| 17 | |
| 18 | #ifdef GLX_USE_TLS |
Chia-I Wu | 29d1150 | 2009-10-10 14:39:43 +0800 | [diff] [blame] | 19 | static __thread const _EGLThreadInfo *_egl_TSD |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 20 | __attribute__ ((tls_model("initial-exec"))); |
| 21 | |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 22 | static INLINE void _eglSetTSD(const _EGLThreadInfo *t) |
| 23 | { |
| 24 | _egl_TSD = t; |
| 25 | } |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 26 | |
| 27 | static INLINE _EGLThreadInfo *_eglGetTSD(void) |
| 28 | { |
| 29 | return (_EGLThreadInfo *) _egl_TSD; |
| 30 | } |
| 31 | |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 32 | static INLINE void _eglFiniTSD(void) |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | static INLINE EGLBoolean _eglInitTSD(void (*dtor)(_EGLThreadInfo *)) |
| 37 | { |
| 38 | /* TODO destroy TSD */ |
| 39 | (void) dtor; |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 40 | (void) _eglFiniTSD; |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 41 | return EGL_TRUE; |
| 42 | } |
| 43 | |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 44 | #elif PTHREADS |
| 45 | #include <pthread.h> |
| 46 | |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 47 | static _EGL_DECLARE_MUTEX(_egl_TSDMutex); |
| 48 | static EGLBoolean _egl_TSDInitialized; |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 49 | static pthread_key_t _egl_TSD; |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 50 | static void (*_egl_FreeTSD)(_EGLThreadInfo *); |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 51 | |
| 52 | static INLINE void _eglSetTSD(const _EGLThreadInfo *t) |
| 53 | { |
| 54 | pthread_setspecific(_egl_TSD, (const void *) t); |
| 55 | } |
| 56 | |
| 57 | static INLINE _EGLThreadInfo *_eglGetTSD(void) |
| 58 | { |
| 59 | return (_EGLThreadInfo *) pthread_getspecific(_egl_TSD); |
| 60 | } |
| 61 | |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 62 | static INLINE void _eglFiniTSD(void) |
| 63 | { |
| 64 | _eglLockMutex(&_egl_TSDMutex); |
| 65 | if (_egl_TSDInitialized) { |
| 66 | _EGLThreadInfo *t = _eglGetTSD(); |
| 67 | |
| 68 | _egl_TSDInitialized = EGL_FALSE; |
| 69 | if (t && _egl_FreeTSD) |
| 70 | _egl_FreeTSD((void *) t); |
| 71 | pthread_key_delete(_egl_TSD); |
| 72 | } |
| 73 | _eglUnlockMutex(&_egl_TSDMutex); |
| 74 | } |
| 75 | |
| 76 | static INLINE EGLBoolean _eglInitTSD(void (*dtor)(_EGLThreadInfo *)) |
| 77 | { |
| 78 | if (!_egl_TSDInitialized) { |
| 79 | _eglLockMutex(&_egl_TSDMutex); |
| 80 | |
| 81 | /* check again after acquiring lock */ |
| 82 | if (!_egl_TSDInitialized) { |
| 83 | if (pthread_key_create(&_egl_TSD, (void (*)(void *)) dtor) != 0) { |
| 84 | _eglUnlockMutex(&_egl_TSDMutex); |
| 85 | return EGL_FALSE; |
| 86 | } |
| 87 | _egl_FreeTSD = dtor; |
Chia-I Wu | 64e7bb3 | 2009-08-10 16:45:12 +0800 | [diff] [blame] | 88 | _eglAddAtExitCall(_eglFiniTSD); |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 89 | _egl_TSDInitialized = EGL_TRUE; |
| 90 | } |
| 91 | |
| 92 | _eglUnlockMutex(&_egl_TSDMutex); |
| 93 | } |
| 94 | |
| 95 | return EGL_TRUE; |
| 96 | } |
| 97 | |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 98 | #else /* PTHREADS */ |
| 99 | static const _EGLThreadInfo *_egl_TSD; |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 100 | static void (*_egl_FreeTSD)(_EGLThreadInfo *); |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 101 | |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 102 | static INLINE void _eglSetTSD(const _EGLThreadInfo *t) |
| 103 | { |
| 104 | _egl_TSD = t; |
| 105 | } |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 106 | |
| 107 | static INLINE _EGLThreadInfo *_eglGetTSD(void) |
| 108 | { |
| 109 | return (_EGLThreadInfo *) _egl_TSD; |
| 110 | } |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 111 | |
| 112 | static INLINE void _eglFiniTSD(void) |
| 113 | { |
| 114 | if (_egl_FreeTSD && _egl_TSD) |
| 115 | _egl_FreeTSD((_EGLThreadInfo *) _egl_TSD); |
| 116 | } |
| 117 | |
| 118 | static INLINE EGLBoolean _eglInitTSD(void (*dtor)(_EGLThreadInfo *)) |
| 119 | { |
| 120 | if (!_egl_FreeTSD && dtor) { |
| 121 | _egl_FreeTSD = dtor; |
Chia-I Wu | 64e7bb3 | 2009-08-10 16:45:12 +0800 | [diff] [blame] | 122 | _eglAddAtExitCall(_eglFiniTSD); |
Chia-I Wu | f6c2f5e | 2009-08-10 12:20:31 +0800 | [diff] [blame] | 123 | } |
| 124 | return EGL_TRUE; |
| 125 | } |
| 126 | |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 127 | #endif /* !PTHREADS */ |
| 128 | |
| 129 | |
| 130 | static void |
| 131 | _eglInitThreadInfo(_EGLThreadInfo *t) |
| 132 | { |
| 133 | memset(t, 0, sizeof(*t)); |
| 134 | t->LastError = EGL_SUCCESS; |
| 135 | /* default, per EGL spec */ |
| 136 | t->CurrentAPIIndex = _eglConvertApiToIndex(EGL_OPENGL_ES_API); |
| 137 | } |
| 138 | |
| 139 | |
| 140 | /** |
| 141 | * Allocate and init a new _EGLThreadInfo object. |
| 142 | */ |
| 143 | static _EGLThreadInfo * |
| 144 | _eglCreateThreadInfo(void) |
| 145 | { |
| 146 | _EGLThreadInfo *t = (_EGLThreadInfo *) calloc(1, sizeof(_EGLThreadInfo)); |
| 147 | if (t) |
| 148 | _eglInitThreadInfo(t); |
| 149 | else |
| 150 | t = &dummy_thread; |
| 151 | return t; |
| 152 | } |
| 153 | |
| 154 | |
| 155 | /** |
| 156 | * Delete/free a _EGLThreadInfo object. |
| 157 | */ |
| 158 | static void |
| 159 | _eglDestroyThreadInfo(_EGLThreadInfo *t) |
| 160 | { |
| 161 | if (t != &dummy_thread) |
| 162 | free(t); |
| 163 | } |
| 164 | |
| 165 | |
| 166 | /** |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 167 | * Make sure TSD is initialized and return current value. |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 168 | */ |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 169 | static INLINE _EGLThreadInfo * |
| 170 | _eglCheckedGetTSD(void) |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 171 | { |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 172 | if (_eglInitTSD(&_eglDestroyThreadInfo) != EGL_TRUE) { |
| 173 | _eglLog(_EGL_FATAL, "failed to initialize \"current\" system"); |
| 174 | return NULL; |
| 175 | } |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 176 | |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 177 | return _eglGetTSD(); |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | |
| 181 | /** |
| 182 | * Return the calling thread's thread info. |
| 183 | * If the calling thread nevers calls this function before, or if its thread |
| 184 | * info was destroyed, a new one is created. This function never returns NULL. |
| 185 | * In the case allocation fails, a dummy one is returned. See also |
| 186 | * _eglIsCurrentThreadDummy. |
| 187 | */ |
| 188 | _EGLThreadInfo * |
| 189 | _eglGetCurrentThread(void) |
| 190 | { |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 191 | _EGLThreadInfo *t = _eglCheckedGetTSD(); |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 192 | if (!t) { |
| 193 | t = _eglCreateThreadInfo(); |
| 194 | _eglSetTSD(t); |
| 195 | } |
| 196 | |
| 197 | return t; |
| 198 | } |
| 199 | |
| 200 | |
| 201 | /** |
| 202 | * Destroy the calling thread's thread info. |
| 203 | */ |
| 204 | void |
| 205 | _eglDestroyCurrentThread(void) |
| 206 | { |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 207 | _EGLThreadInfo *t = _eglCheckedGetTSD(); |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 208 | if (t) { |
| 209 | _eglDestroyThreadInfo(t); |
| 210 | _eglSetTSD(NULL); |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | |
| 215 | /** |
| 216 | * Return true if the calling thread's thread info is dummy. |
| 217 | * A dummy thread info is shared by all threads and should not be modified. |
| 218 | * Functions like eglBindAPI or eglMakeCurrent should check for dummy-ness |
| 219 | * before updating the thread info. |
| 220 | */ |
| 221 | EGLBoolean |
| 222 | _eglIsCurrentThreadDummy(void) |
| 223 | { |
Chia-I Wu | 56d2119 | 2009-08-10 12:46:08 +0800 | [diff] [blame] | 224 | _EGLThreadInfo *t = _eglCheckedGetTSD(); |
Brian Paul | 40fd101 | 2009-07-17 13:36:06 -0600 | [diff] [blame] | 225 | return (!t || t == &dummy_thread); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | /** |
| 230 | * Return the currently bound context, or NULL. |
| 231 | */ |
| 232 | _EGLContext * |
| 233 | _eglGetCurrentContext(void) |
| 234 | { |
| 235 | _EGLThreadInfo *t = _eglGetCurrentThread(); |
| 236 | return t->CurrentContexts[t->CurrentAPIIndex]; |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /** |
| 241 | * Return the display of the currently bound context, or NULL. |
| 242 | */ |
| 243 | _EGLDisplay * |
| 244 | _eglGetCurrentDisplay(void) |
| 245 | { |
| 246 | _EGLThreadInfo *t = _eglGetCurrentThread(); |
| 247 | _EGLContext *ctx = t->CurrentContexts[t->CurrentAPIIndex]; |
| 248 | if (ctx) |
| 249 | return ctx->Display; |
| 250 | else |
| 251 | return NULL; |
| 252 | } |
| 253 | |
| 254 | |
| 255 | /** |
| 256 | * Return the read or write surface of the currently bound context, or NULL. |
| 257 | */ |
| 258 | _EGLSurface * |
| 259 | _eglGetCurrentSurface(EGLint readdraw) |
| 260 | { |
| 261 | _EGLThreadInfo *t = _eglGetCurrentThread(); |
| 262 | _EGLContext *ctx = t->CurrentContexts[t->CurrentAPIIndex]; |
| 263 | if (ctx) { |
| 264 | switch (readdraw) { |
| 265 | case EGL_DRAW: |
| 266 | return ctx->DrawSurface; |
| 267 | case EGL_READ: |
| 268 | return ctx->ReadSurface; |
| 269 | default: |
| 270 | return NULL; |
| 271 | } |
| 272 | } |
| 273 | return NULL; |
| 274 | } |
| 275 | |
| 276 | |
| 277 | /** |
| 278 | * Record EGL error code. |
| 279 | */ |
| 280 | EGLBoolean |
| 281 | _eglError(EGLint errCode, const char *msg) |
| 282 | { |
| 283 | _EGLThreadInfo *t = _eglGetCurrentThread(); |
| 284 | const char *s; |
| 285 | |
| 286 | if (t == &dummy_thread) |
| 287 | return EGL_FALSE; |
| 288 | |
| 289 | if (t->LastError == EGL_SUCCESS) { |
| 290 | t->LastError = errCode; |
| 291 | |
| 292 | switch (errCode) { |
| 293 | case EGL_BAD_ACCESS: |
| 294 | s = "EGL_BAD_ACCESS"; |
| 295 | break; |
| 296 | case EGL_BAD_ALLOC: |
| 297 | s = "EGL_BAD_ALLOC"; |
| 298 | break; |
| 299 | case EGL_BAD_ATTRIBUTE: |
| 300 | s = "EGL_BAD_ATTRIBUTE"; |
| 301 | break; |
| 302 | case EGL_BAD_CONFIG: |
| 303 | s = "EGL_BAD_CONFIG"; |
| 304 | break; |
| 305 | case EGL_BAD_CONTEXT: |
| 306 | s = "EGL_BAD_CONTEXT"; |
| 307 | break; |
| 308 | case EGL_BAD_CURRENT_SURFACE: |
| 309 | s = "EGL_BAD_CURRENT_SURFACE"; |
| 310 | break; |
| 311 | case EGL_BAD_DISPLAY: |
| 312 | s = "EGL_BAD_DISPLAY"; |
| 313 | break; |
| 314 | case EGL_BAD_MATCH: |
| 315 | s = "EGL_BAD_MATCH"; |
| 316 | break; |
| 317 | case EGL_BAD_NATIVE_PIXMAP: |
| 318 | s = "EGL_BAD_NATIVE_PIXMAP"; |
| 319 | break; |
| 320 | case EGL_BAD_NATIVE_WINDOW: |
| 321 | s = "EGL_BAD_NATIVE_WINDOW"; |
| 322 | break; |
| 323 | case EGL_BAD_PARAMETER: |
| 324 | s = "EGL_BAD_PARAMETER"; |
| 325 | break; |
| 326 | case EGL_BAD_SURFACE: |
| 327 | s = "EGL_BAD_SURFACE"; |
| 328 | break; |
| 329 | case EGL_BAD_SCREEN_MESA: |
| 330 | s = "EGL_BAD_SCREEN_MESA"; |
| 331 | break; |
| 332 | case EGL_BAD_MODE_MESA: |
| 333 | s = "EGL_BAD_MODE_MESA"; |
| 334 | break; |
| 335 | default: |
| 336 | s = "other"; |
| 337 | } |
| 338 | _eglLog(_EGL_DEBUG, "EGL user error 0x%x (%s) in %s\n", errCode, s, msg); |
| 339 | } |
| 340 | |
| 341 | return EGL_FALSE; |
| 342 | } |