144 lines
3.9 KiB
C++
144 lines
3.9 KiB
C++
/**
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* @file llmemory.h
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* @brief Memory allocation/deallocation header-stuff goes here.
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*
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* $LicenseInfo:firstyear=2002&license=viewergpl$
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*
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* Copyright (c) 2002-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#ifndef LLMEMORY_H
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#define LLMEMORY_H
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#include <new>
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#include <cstdlib>
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#if !LL_WINDOWS
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#include <stdint.h> // uintptr_t
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#endif
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#include "llerror.h"
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//----------------------------------------------------------------------------
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#if LL_DEBUG
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inline void* ll_aligned_malloc( size_t size, int align )
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{
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void* mem = malloc( size + (align - 1) + sizeof(void*) );
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char* aligned = ((char*)mem) + sizeof(void*);
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aligned += align - ((uintptr_t)aligned & (align - 1));
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((void**)aligned)[-1] = mem;
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return aligned;
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}
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inline void ll_aligned_free( void* ptr )
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{
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free( ((void**)ptr)[-1] );
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}
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inline void* ll_aligned_malloc_16(size_t size) // returned hunk MUST be freed with ll_aligned_free_16().
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{
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#if defined(LL_WINDOWS)
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return _mm_malloc(size, 16);
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#elif defined(LL_DARWIN)
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return malloc(size); // default osx malloc is 16 byte aligned.
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#else
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void *rtn;
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if (LL_LIKELY(0 == posix_memalign(&rtn, 16, size)))
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return rtn;
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else // bad alignment requested, or out of memory
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return NULL;
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#endif
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}
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inline void ll_aligned_free_16(void *p)
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{
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#if defined(LL_WINDOWS)
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_mm_free(p);
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#elif defined(LL_DARWIN)
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return free(p);
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#else
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free(p); // posix_memalign() is compatible with heap deallocator
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#endif
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}
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inline void* ll_aligned_malloc_32(size_t size) // returned hunk MUST be freed with ll_aligned_free_32().
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{
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#if defined(LL_WINDOWS)
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return _mm_malloc(size, 32);
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#elif defined(LL_DARWIN)
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return ll_aligned_malloc( size, 32 );
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#else
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void *rtn;
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if (LL_LIKELY(0 == posix_memalign(&rtn, 32, size)))
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return rtn;
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else // bad alignment requested, or out of memory
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return NULL;
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#endif
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}
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inline void ll_aligned_free_32(void *p)
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{
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#if defined(LL_WINDOWS)
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_mm_free(p);
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#elif defined(LL_DARWIN)
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ll_aligned_free( p );
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#else
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free(p); // posix_memalign() is compatible with heap deallocator
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#endif
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}
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#else // LL_DEBUG
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// ll_aligned_foo are noops now that we use tcmalloc everywhere (tcmalloc aligns automatically at appropriate intervals)
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#define ll_aligned_malloc( size, align ) malloc(size)
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#define ll_aligned_free( ptr ) free(ptr)
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#define ll_aligned_malloc_16 malloc
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#define ll_aligned_free_16 free
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#define ll_aligned_malloc_32 malloc
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#define ll_aligned_free_32 free
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#endif // LL_DEBUG
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class LL_COMMON_API LLMemory
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{
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public:
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static void initClass();
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static void cleanupClass();
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static void freeReserve();
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// Return the resident set size of the current process, in bytes.
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// Return value is zero if not known.
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static U64 getCurrentRSS();
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static U32 getWorkingSetSize();
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private:
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static char* reserveMem;
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};
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//EVENTUALLY REMOVE THESE:
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#include "llpointer.h"
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#include "llrefcount.h"
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#include "llsingleton.h"
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#include "llsafehandle.h"
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#endif
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