mirror of
https://github.com/FairRootGroup/FairMQ.git
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53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
/********************************************************************************
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* Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public Licence (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#include "Common.h"
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#include "UnmanagedRegion.h"
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using namespace std;
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namespace bipc = ::boost::interprocess;
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namespace fair
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{
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namespace mq
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{
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namespace shmem
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{
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UnmanagedRegion::UnmanagedRegion(Manager& manager, const size_t size, RegionCallback callback, const std::string& path /* = "" */, int flags /* = 0 */)
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: fManager(manager)
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, fRegion(nullptr)
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, fRegionId(0)
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{
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try {
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RegionCounter* rc = fManager.ManagementSegment().find<RegionCounter>(bipc::unique_instance).first;
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if (rc) {
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LOG(debug) << "region counter found, with value of " << rc->fCount << ". incrementing.";
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(rc->fCount)++;
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LOG(debug) << "incremented region counter, now: " << rc->fCount;
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} else {
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LOG(debug) << "no region counter found, creating one and initializing with 1";
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rc = fManager.ManagementSegment().construct<RegionCounter>(bipc::unique_instance)(1);
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LOG(debug) << "initialized region counter with: " << rc->fCount;
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}
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fRegionId = rc->fCount;
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fRegion = fManager.CreateRegion(size, fRegionId, callback, path, flags);
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} catch (bipc::interprocess_exception& e) {
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LOG(error) << "cannot create region. Already created/not cleaned up?";
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LOG(error) << e.what();
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throw;
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}
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}
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}
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}
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}
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