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Merge pull request #1158 from ProfFan/fix/tbb 

Fix the race!
release/4.3a0
Fan Jiang 2022-04-07 13:29:17 -04:00 committed by GitHub
parent 1232552e00 af1dedb879
commit a0a8010bfe
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 26 additions and 2 deletions
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28
gtsam/inference/ClusterTree-inst.h
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@ -15,6 +15,10 @@
#include <gtsam/base/timing.h>
#include <gtsam/base/treeTraversal-inst.h>
#ifdef GTSAM_USE_TBB
#include <mutex>
#endif
namespace gtsam {
/* ************************************************************************* */
@ -120,12 +124,25 @@ struct EliminationData {
size_t myIndexInParent;
FastVector<sharedFactor> childFactors;
boost::shared_ptr<BTNode> bayesTreeNode;
#ifdef GTSAM_USE_TBB
boost::shared_ptr<std::mutex> writeLock;
#endif
EliminationData(EliminationData* _parentData, size_t nChildren) :
parentData(_parentData), bayesTreeNode(boost::make_shared<BTNode>()) {
parentData(_parentData), bayesTreeNode(boost::make_shared<BTNode>())
#ifdef GTSAM_USE_TBB
, writeLock(boost::make_shared<std::mutex>())
#endif
{
if (parentData) {
#ifdef GTSAM_USE_TBB
parentData->writeLock->lock();
#endif
myIndexInParent = parentData->childFactors.size();
parentData->childFactors.push_back(sharedFactor());
#ifdef GTSAM_USE_TBB
parentData->writeLock->unlock();
#endif
} else {
myIndexInParent = 0;
}
@ -196,8 +213,15 @@ struct EliminationData {
nodesIndex_.insert(std::make_pair(j, myData.bayesTreeNode));
// Store remaining factor in parent's gathered factors
if (!eliminationResult.second->empty())
if (!eliminationResult.second->empty()) {
#ifdef GTSAM_USE_TBB
myData.parentData->writeLock->lock();
#endif
myData.parentData->childFactors[myData.myIndexInParent] = eliminationResult.second;
#ifdef GTSAM_USE_TBB
myData.parentData->writeLock->unlock();
#endif
}
}
};
};