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Use a shared (!) reader writer lock to protect CURRENT_REGIONS

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This fixes issue #3016.
This commit is contained in:
Patrick Niklaus
2016-10-07 16:08:08 +02:00
committed by Patrick Niklaus
parent 036475afd0
commit 9eb7fc03ce
5 changed files with 30 additions and 94 deletions
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include/storage/shared_barriers.hpp
+3 -14
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@@ -3,6 +3,7 @@
#include <boost/interprocess/sync/named_condition.hpp>
#include <boost/interprocess/sync/named_mutex.hpp>
#include <boost/interprocess/sync/named_sharable_mutex.hpp>
namespace osrm
{
@@ -13,25 +14,13 @@ struct SharedBarriers
SharedBarriers()
: pending_update_mutex(boost::interprocess::open_or_create, "pending_update"),
update_mutex(boost::interprocess::open_or_create, "update"),
query_mutex(boost::interprocess::open_or_create, "query"),
no_running_queries_condition(boost::interprocess::open_or_create, "no_running_queries"),
update_ongoing(false), number_of_queries(0)
query_mutex(boost::interprocess::open_or_create, "query")
{
}
// Mutex to protect access to the boolean variable
boost::interprocess::named_mutex pending_update_mutex;
boost::interprocess::named_mutex update_mutex;
boost::interprocess::named_mutex query_mutex;
// Condition that no update is running
boost::interprocess::named_condition no_running_queries_condition;
// Is there an ongoing update?
bool update_ongoing;
// Is there any query?
int number_of_queries;
boost::interprocess::named_sharable_mutex query_mutex;
};
}
}