Pool.h

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_SRC_MEM_POOL_H
#define SQUID_SRC_MEM_POOL_H
 
#include "mem/forward.h"
#include "mem/Meter.h"
#include "util.h"
 
#include <list>
#if HAVE_GNUMALLOC_H
#include <gnumalloc.h>
#elif HAVE_MALLOC_H
#include <malloc.h>
#endif
#if HAVE_MEMORY_H
#include <memory.h>
#endif
 
#if !M_MMAP_MAX
#if USE_DLMALLOC
#define M_MMAP_MAX -4
#endif
#endif
 
#define toMB(size) ( ((double) size) / ((double)(1024*1024)) )
#define toKB(size) ( (size + 1024 - 1) / 1024 )
 
extern Mem::PoolMeter TheMeter;
 
class MemPools
{
public:
    static MemPools &GetInstance();
    MemPools();
    void flushMeters();
 
    Mem::Allocator *create(const char *, size_t);
 
    void setIdleLimit(const ssize_t newLimit) { idleLimit_ = newLimit; }
    ssize_t idleLimit() const { return idleLimit_; }
 
    void clean(time_t maxage);
 
    void setDefaultPoolChunking(bool const &);
 
    std::list<Mem::Allocator *> pools;
    bool defaultIsChunked = false;
 
private:
    ssize_t idleLimit_ = (2 << 20);
};
 
#define memPoolCreate MemPools::GetInstance().create
 
#endif /* SQUID_SRC_MEM_POOL_H */