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Diffstat (limited to 'indra/llcommon/llmemory.h')
| -rw-r--r-- | indra/llcommon/llmemory.h | 83 |
1 files changed, 73 insertions, 10 deletions
diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h index 9bf4248bb7..8d114f744b 100644 --- a/indra/llcommon/llmemory.h +++ b/indra/llcommon/llmemory.h @@ -1,39 +1,102 @@ -/** +/** * @file llmemory.h * @brief Memory allocation/deallocation header-stuff goes here. * * $LicenseInfo:firstyear=2002&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. - * + * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. - * + * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. - * + * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * + * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LLMEMORY_H #define LLMEMORY_H +#include <stdlib.h> + +// A not necessarily efficient, but general, aligned malloc http://stackoverflow.com/questions/196329/osx-lacks-memalign +#if 0 //DON'T use ll_aligned_foo now that we use tcmalloc everywhere (tcmalloc aligns automatically at appropriate intervals) +inline void* ll_aligned_malloc( size_t size, int align ) +{ + void* mem = malloc( size + (align - 1) + sizeof(void*) ); + char* aligned = ((char*)mem) + sizeof(void*); + aligned += align - ((uintptr_t)aligned & (align - 1)); + + ((void**)aligned)[-1] = mem; + return aligned; +} +inline void ll_aligned_free( void* ptr ) +{ + free( ((void**)ptr)[-1] ); +} -extern S32 gTotalDAlloc; -extern S32 gTotalDAUse; -extern S32 gDACount; +inline void* ll_aligned_malloc_16(size_t size) // returned hunk MUST be freed with ll_aligned_free_16(). +{ +#if defined(LL_WINDOWS) + return _mm_malloc(size, 16); +#elif defined(LL_DARWIN) + return malloc(size); // default osx malloc is 16 byte aligned. +#else + void *rtn; + if (LL_LIKELY(0 == posix_memalign(&rtn, 16, size))) + return rtn; + else // bad alignment requested, or out of memory + return NULL; +#endif +} -extern void* ll_allocate (size_t size); -extern void ll_release (void *p); +inline void ll_aligned_free_16(void *p) +{ +#if defined(LL_WINDOWS) + _mm_free(p); +#elif defined(LL_DARWIN) + return free(p); +#else + free(p); // posix_memalign() is compatible with heap deallocator +#endif +} + +inline void* ll_aligned_malloc_32(size_t size) // returned hunk MUST be freed with ll_aligned_free_32(). +{ +#if defined(LL_WINDOWS) + return _mm_malloc(size, 32); +#elif defined(LL_DARWIN) + return ll_aligned_malloc( size, 32 ); +#else + void *rtn; + if (LL_LIKELY(0 == posix_memalign(&rtn, 32, size))) + return rtn; + else // bad alignment requested, or out of memory + return NULL; +#endif +} + +inline void ll_aligned_free_32(void *p) +{ +#if defined(LL_WINDOWS) + _mm_free(p); +#elif defined(LL_DARWIN) + ll_aligned_free( p ); +#else + free(p); // posix_memalign() is compatible with heap deallocator +#endif +} +#endif class LL_COMMON_API LLMemory { |