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/*
* Copyright (c) 2000-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Steve Reinhardt
*/
/*
* This code was originally written by Steve Reinhardt as part of
* the Wisconsin Wind Tunnel simulator. Relicensed as part of M5
* by permission.
*/
#include <cassert>
#include "base/fast_alloc.hh"
#if USE_FAST_ALLOC
void *FastAlloc::freeLists[Num_Buckets];
#if FAST_ALLOC_STATS
unsigned FastAlloc::newCount[Num_Buckets];
unsigned FastAlloc::deleteCount[Num_Buckets];
unsigned FastAlloc::allocCount[Num_Buckets];
#endif
void *
FastAlloc::moreStructs(int bucket)
{
assert(bucket > 0 && bucket < Num_Buckets);
int sz = bucket * Alloc_Quantum;
const int nstructs = Num_Structs_Per_New; // how many to allocate?
char *p = ::new char[nstructs * sz];
#if FAST_ALLOC_STATS
++allocCount[bucket];
#endif
freeLists[bucket] = p;
for (int i = 0; i < (nstructs-2); ++i, p += sz)
*(void **)p = p + sz;
*(void **)p = 0;
return (p + sz);
}
#endif // USE_FAST_ALLOC
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