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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "common.h"
#include "allocchunk.h"
#include "datasegment.h"
#include <algorithm>
#define USE_STAT2(a) a
namespace vespamalloc {
template <typename MemBlockPtrT>
class AllocPoolT
{
using DataSegment = segment::DataSegment;
public:
typedef AFList<MemBlockPtrT> ChunkSList;
AllocPoolT(DataSegment & ds);
~AllocPoolT();
ChunkSList *getFree(SizeClassT sc, size_t minBlocks);
ChunkSList *exchangeFree(SizeClassT sc, ChunkSList * csl);
ChunkSList *exchangeAlloc(SizeClassT sc, ChunkSList * csl);
ChunkSList *exactAlloc(size_t exactSize, SizeClassT sc, ChunkSList * csl) __attribute__((noinline));
ChunkSList *returnMemory(SizeClassT sc, ChunkSList * csl) __attribute__((noinline));
DataSegment & dataSegment() { return _dataSegment; }
void enableThreadSupport() __attribute__((noinline));
static void setParams(size_t threadCacheLimit);
static size_t computeExactSize(size_t sz) {
return (((sz + (ALWAYS_REUSE_LIMIT - 1)) / ALWAYS_REUSE_LIMIT) * ALWAYS_REUSE_LIMIT);
}
void info(FILE * os, size_t level=0) __attribute__((noinline));
private:
ChunkSList * getFree(SizeClassT sc) __attribute__((noinline));
ChunkSList * getAlloc(SizeClassT sc) __attribute__((noinline));
ChunkSList * malloc(const Guard & guard, SizeClassT sc) __attribute__((noinline));
ChunkSList * getChunks(const Guard & guard, size_t numChunks) __attribute__((noinline));
ChunkSList * allocChunkList(const Guard & guard) __attribute__((noinline));
AllocPoolT(const AllocPoolT & ap);
AllocPoolT & operator = (const AllocPoolT & ap);
class AllocFree
{
public:
AllocFree() : _full(), _empty() { }
typename ChunkSList::AtomicHeadPtr _full;
typename ChunkSList::AtomicHeadPtr _empty;
};
class Stat
{
public:
Stat() : _getAlloc(0),
_getFree(0),
_exchangeAlloc(0),
_exchangeFree(0),
_exactAlloc(0),
_return(0),_malloc(0) { }
std::atomic<size_t> _getAlloc;
std::atomic<size_t> _getFree;
std::atomic<size_t> _exchangeAlloc;
std::atomic<size_t> _exchangeFree;
std::atomic<size_t> _exactAlloc;
std::atomic<size_t> _return;
std::atomic<size_t> _malloc;
bool isUsed() const {
// Do not count _getFree.
return (_getAlloc || _exchangeAlloc || _exchangeFree || _exactAlloc || _return || _malloc);
}
};
Mutex _mutex;
ChunkSList * _chunkPool;
AllocFree _scList[NUM_SIZE_CLASSES];
DataSegment & _dataSegment;
std::atomic<size_t> _getChunks;
std::atomic<size_t> _getChunksSum;
std::atomic<size_t> _allocChunkList;
Stat _stat[NUM_SIZE_CLASSES];
static size_t _threadCacheLimit __attribute__((visibility("hidden")));
};
}
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