| 0,0 → 1,72 |
|---|
| /************************************************************************** |
| * |
| * Copyright 2008-2010 VMware, Inc. |
| * 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, sub license, 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 (including the |
| * next paragraph) 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. |
| * |
| **************************************************************************/ |
| |
| |
| /* |
| * Memory alignment wrappers. |
| */ |
| |
| |
| #ifndef _OS_MEMORY_H_ |
| #error "Must not be included directly. Include os_memory.h instead" |
| #endif |
| |
| |
| #include "pipe/p_compiler.h" |
| |
| |
| /** |
| * Return memory on given byte alignment |
| */ |
| static INLINE void * |
| os_malloc_aligned(size_t size, size_t alignment) |
| { |
| char *ptr, *buf; |
| |
| ptr = (char *) os_malloc(size + alignment + sizeof(void *)); |
| if (!ptr) |
| return NULL; |
| |
| buf = (char *)(((uintptr_t)ptr + sizeof(void *) + alignment - 1) & ~((uintptr_t)(alignment - 1))); |
| *(char **)(buf - sizeof(void *)) = ptr; |
| |
| return buf; |
| } |
| |
| |
| /** |
| * Free memory returned by align_malloc(). |
| */ |
| static INLINE void |
| os_free_aligned(void *ptr) |
| { |
| if (ptr) { |
| void **cubbyHole = (void **) ((char *) ptr - sizeof(void *)); |
| void *realAddr = *cubbyHole; |
| os_free(realAddr); |
| } |
| } |