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shm: when refCount segment size is zero, fallback to old behaviour

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, which is to store reference counts inside the main data segment
This commit is contained in:
Alexey Rybalchenko
2023-11-29 18:48:42 +01:00
parent 05a2ae6a31
commit 2df3d909fa
5 changed files with 69 additions and 25 deletions
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3
examples/region/keep-alive.cxx
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@@ -95,10 +95,11 @@ struct ShmManager
uint64_t size = stoull(conf.at(1));
fair::mq::RegionConfig cfg;
cfg.id = id;
cfg.rcSegmentSize = 0;
cfg.size = size;
regionCfgs.push_back(cfg);
auto ret = regions.emplace(id, make_unique<fair::mq::shmem::UnmanagedRegion>(shmId, id, size));
auto ret = regions.emplace(id, make_unique<fair::mq::shmem::UnmanagedRegion>(shmId, cfg));
fair::mq::shmem::UnmanagedRegion& region = *(ret.first->second);
LOG(info) << "Created unamanged region " << id << " of size " << region.GetSize()
<< ", starting at " << region.GetData() << ". Locking...";