d2/da9/sgkey__utilities_8h_source.html

/*

  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration

*/


#ifndef CXXUTILS_SGKEY_UTILITIES_H

#define CXXUTILS_SGKEY_UTILITIES_H


#include "SGCore/sgkey_t.h"

#include "CxxUtils/ConcurrentMap.h"

#include "CxxUtils/SimpleUpdater.h"


namespace SG {


  // Separating this avoids a cppcheck syntax error.

  static constexpr auto s_sgkey_nullval =

    static_cast<CxxUtils::detail::ConcurrentHashmapVal_t> (-1);


  template <class T>

  using ConcurrentSGKeyMap = CxxUtils::ConcurrentMap<

    sgkey_t, T,

    CxxUtils::SimpleUpdater,

    SGKeyHash, SGKeyEqual,

    0, s_sgkey_nullval>;


} // namespace SG


#endif

ConcurrentMap.h
Hash map from integers/pointers allowing concurrent, lockless reads.

SimpleUpdater.h
Simple (non-deleting) Updater implementation.

CxxUtils::SimpleUpdater
Simple (non-deleting) Updater implementation.
Definition SimpleUpdater.h:37

CxxUtils::detail::ConcurrentHashmapVal_t
uintptr_t ConcurrentHashmapVal_t
Type used for keys and values — an unsigned big enough to hold a pointer.
Definition ConcurrentHashmapImpl.h:40

CxxUtils::ConcurrentMap
ConcurrentMap(Updater_t &&updater, size_type capacity=64, const Context_t &ctx=Updater_t::defaultContext())
Hash map from integers/pointers allowing concurrent, lockless reads.

SG
Forward declaration.
Definition CaloCellPacker_400_500.h:32

SG::sgkey_t
uint32_t sgkey_t
Type used for hashed StoreGate key+CLID pairs.
Definition sgkey_t.h:32

SG::s_sgkey_nullval
static constexpr auto s_sgkey_nullval
Definition sgkey_utilities.h:24

SG::ConcurrentSGKeyMap
CxxUtils::ConcurrentMap< sgkey_t, T, CxxUtils::SimpleUpdater, SGKeyHash, SGKeyEqual, 0, s_sgkey_nullval > ConcurrentSGKeyMap
A concurrent map using sgkey_t as key.
Definition sgkey_utilities.h:29

sgkey_t.h

SG::SGKeyEqual
Comparison functional for sgkey_t.
Definition sgkey_t.h:72

SG::SGKeyHash
Hash functional for sgkey_t.
Definition sgkey_t.h:59