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FairMQ: Introduce callbacks for the FairMQUnmanagedRegion.

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Callbacks are called when the data buffer of the message assiciated
with the corresponding region is no longer needed by the transport.
Example in examples/advanced/Region/
This commit is contained in:
Alexey Rybalchenko
2017-11-14 17:00:37 +01:00
committed by Mohammad Al-Turany
parent 378c47c5e5
commit 58a312b730
39 changed files with 747 additions and 548 deletions
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47
fairmq/shmem/FairMQUnmanagedRegionSHM.h
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@@ -11,6 +11,7 @@
#include "FairMQUnmanagedRegion.h"
#include "FairMQLogger.h"
#include "Manager.h"
#include <boost/interprocess/shared_memory_object.hpp>
#include <boost/interprocess/mapped_region.hpp>
@@ -21,59 +22,23 @@
#include <string>
#include <unordered_map>
struct RemoteRegion // todo: better name?
{
RemoteRegion(std::string regionIdStr, uint64_t size)
: fRegionName(regionIdStr)
, fShmemObject(boost::interprocess::open_or_create, regionIdStr.c_str(), boost::interprocess::read_write)
{
if (size > 0)
{
fShmemObject.truncate(size);
}
fRegion = boost::interprocess::mapped_region(fShmemObject, boost::interprocess::read_write); // TODO: add HUGEPAGES flag here
}
RemoteRegion() = delete;
RemoteRegion(const RemoteRegion& rr) = default;
RemoteRegion(RemoteRegion&& rr) = default;
~RemoteRegion()
{
if (boost::interprocess::shared_memory_object::remove(fRegionName.c_str()))
{
LOG(DEBUG) << "destroyed region " << fRegionName;
}
}
std::string fRegionName;
boost::interprocess::shared_memory_object fShmemObject;
boost::interprocess::mapped_region fRegion;
};
class FairMQUnmanagedRegionSHM : public FairMQUnmanagedRegion
{
friend class FairMQSocketSHM;
friend class FairMQMessageSHM;
public:
FairMQUnmanagedRegionSHM(const size_t size);
FairMQUnmanagedRegionSHM(fair::mq::shmem::Manager& manager, const size_t size, FairMQRegionCallback callback = nullptr);
virtual void* GetData() const override;
virtual size_t GetSize() const override;
void* GetData() const override;
size_t GetSize() const override;
static boost::interprocess::mapped_region* GetRemoteRegion(uint64_t regionId);
virtual ~FairMQUnmanagedRegionSHM();
~FairMQUnmanagedRegionSHM() override;
private:
static std::atomic<bool> fInterrupted;
fair::mq::shmem::Manager& fManager;
boost::interprocess::mapped_region* fRegion;
uint64_t fRegionId;
std::string fRegionIdStr;
bool fRemote;
static std::unordered_map<uint64_t, RemoteRegion> fRemoteRegionMap;
};
#endif /* FAIRMQUNMANAGEDREGIONSHM_H_ */