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Diffstat (limited to 'mesalib/src/mapi/u_thread.h')
| -rw-r--r-- | mesalib/src/mapi/u_thread.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/mesalib/src/mapi/u_thread.h b/mesalib/src/mapi/u_thread.h deleted file mode 100644 index 57c3b076a..000000000 --- a/mesalib/src/mapi/u_thread.h +++ /dev/null @@ -1,156 +0,0 @@ -/* - * Mesa 3-D graphics library - * - * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - */ - - -/* - * Thread support for gl dispatch. - * - * Initial version by John Stone (j.stone@acm.org) (johns@cs.umr.edu) - * and Christoph Poliwoda (poliwoda@volumegraphics.com) - * Revised by Keith Whitwell - * Adapted for new gl dispatcher by Brian Paul - * Modified for use in mapi by Chia-I Wu - */ - -/* - * If this file is accidentally included by a non-threaded build, - * it should not cause the build to fail, or otherwise cause problems. - * In general, it should only be included when needed however. - */ - -#ifndef _U_THREAD_H_ -#define _U_THREAD_H_ - -#include <stdio.h> -#include <stdlib.h> -#include "u_compiler.h" - -#include "c11/threads.h" - -#if defined(HAVE_PTHREAD) || defined(_WIN32) -#ifndef THREADS -#define THREADS -#endif -#endif - -/* - * Error messages - */ -#define INIT_TSD_ERROR "Mesa: failed to allocate key for thread specific data" -#define GET_TSD_ERROR "Mesa: failed to get thread specific data" -#define SET_TSD_ERROR "Mesa: thread failed to set thread specific data" - - -/* - * Magic number to determine if a TSD object has been initialized. - * Kind of a hack but there doesn't appear to be a better cross-platform - * solution. - */ -#define INIT_MAGIC 0xff8adc98 - -#ifdef __cplusplus -extern "C" { -#endif - - -struct u_tsd { - tss_t key; - unsigned initMagic; -}; - - -static INLINE unsigned long -u_thread_self(void) -{ - /* - * XXX: Callers of u_thread_self assume it is a lightweight function, - * returning a numeric value. But unfortunately C11's thrd_current() gives - * no such guarantees. In fact, it's pretty hard to have a compliant - * implementation of thrd_current() on Windows with such characteristics. - * So for now, we side-step this mess and use Windows thread primitives - * directly here. - * - * FIXME: On the other hand, u_thread_self() is a bad - * abstraction. Even with pthreads, there is no guarantee that - * pthread_self() will return numeric IDs -- we should be using - * pthread_equal() instead of assuming we can compare thread ids... - */ -#ifdef _WIN32 - return GetCurrentThreadId(); -#else - return (unsigned long) (uintptr_t) thrd_current(); -#endif -} - - -static INLINE void -u_tsd_init(struct u_tsd *tsd) -{ - if (tss_create(&tsd->key, NULL/*free*/) != 0) { - perror(INIT_TSD_ERROR); - exit(-1); - } - tsd->initMagic = INIT_MAGIC; -} - - -static INLINE void * -u_tsd_get(struct u_tsd *tsd) -{ - if (tsd->initMagic != INIT_MAGIC) { - u_tsd_init(tsd); - } - return tss_get(tsd->key); -} - - -static INLINE void -u_tsd_set(struct u_tsd *tsd, void *ptr) -{ - if (tsd->initMagic != INIT_MAGIC) { - u_tsd_init(tsd); - } - if (tss_set(tsd->key, ptr) != 0) { - perror(SET_TSD_ERROR); - exit(-1); - } -} - - -static INLINE void -u_tsd_destroy(struct u_tsd *tsd) -{ - if (tsd->initMagic != INIT_MAGIC) { - return; - } - tss_delete(tsd->key); - tsd->initMagic = 0x0; -} - - -#ifdef __cplusplus -} -#endif - -#endif /* _U_THREAD_H_ */ |