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DataFacade should only remove shared segments if they're actually different from the last time they were checked.

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This commit is contained in:
Daniel Patterson 2016-01-13 17:42:50 -08:00 committed by Patrick Niklaus
parent e20f92bbbb
commit 1ed7bcfb2c
1 changed files with 10 additions and 3 deletions
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13
include/engine/datafacade/shared_datafacade.hpp
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@ -225,6 +225,10 @@ template <class EdgeDataT> class SharedDataFacade final : public BaseDataFacade<
SharedDataFacade()
{
if (!datastore::SharedMemory::RegionExists(CURRENT_REGIONS))
{
throw util::exception("No shared memory blocks found, have you forgotten to run osrm-datastore?");
}
data_timestamp_ptr = (SharedDataTimestamp *)datastore::SharedMemoryFactory::Get(
CURRENT_REGIONS, sizeof(SharedDataTimestamp), false, false)
->Ptr();
@ -239,8 +243,7 @@ template <class EdgeDataT> class SharedDataFacade final : public BaseDataFacade<
void CheckAndReloadFacade()
{
if (CURRENT_LAYOUT != data_timestamp_ptr->layout ||
CURRENT_DATA != data_timestamp_ptr->data ||
CURRENT_TIMESTAMP != data_timestamp_ptr->timestamp)
CURRENT_DATA != data_timestamp_ptr->data)
{
// release the previous shared memory segments
datastore::SharedMemory::Remove(CURRENT_LAYOUT);
@ -248,8 +251,12 @@ template <class EdgeDataT> class SharedDataFacade final : public BaseDataFacade<
CURRENT_LAYOUT = data_timestamp_ptr->layout;
CURRENT_DATA = data_timestamp_ptr->data;
CURRENT_TIMESTAMP = data_timestamp_ptr->timestamp;
CURRENT_TIMESTAMP = 0; // Force trigger a reload
}
if (CURRENT_TIMESTAMP != data_timestamp_ptr->timestamp)
{
CURRENT_TIMESTAMP = data_timestamp_ptr->timestamp;
m_layout_memory.reset(datastore::SharedMemoryFactory::Get(CURRENT_LAYOUT));
data_layout = (SharedDataLayout *)(m_layout_memory->Ptr());