diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigAmbiguitySolver/InDetTrigAmbiguitySolver/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigAmbiguitySolver/InDetTrigAmbiguitySolver/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..1ac2843fb45ed7905193d3ef9846327cccfe3503
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigAmbiguitySolver/InDetTrigAmbiguitySolver/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigAmbiguitySolver
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigConversionFinder/InDetTrigConversionFinder/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigConversionFinder/InDetTrigConversionFinder/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..dc9f507598fe7e1411c5d6dfac8fd6c54405aeae
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigConversionFinder/InDetTrigConversionFinder/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigConversionFinder
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigExtensProcessor/InDetTrigExtensProcessor/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigExtensProcessor/InDetTrigExtensProcessor/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..5f1d7ef00c4ba2580e557051a3c2f2dfdf04aa89
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigExtensProcessor/InDetTrigExtensProcessor/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigExtensProcessor
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigParticleCreation/InDetTrigParticleCreation/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigParticleCreation/InDetTrigParticleCreation/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..4e5f0f12eb54c3318c5f84d4e97c65e1199b2a1f
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigParticleCreation/InDetTrigParticleCreation/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigParticleCreation
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigPrepRawDataFormat/InDetTrigPrepRawDataFormat/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigPrepRawDataFormat/InDetTrigPrepRawDataFormat/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..d10e015c707c5a5237e3ee7066a8d81536ce8af9
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigPrepRawDataFormat/InDetTrigPrepRawDataFormat/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigPrepRawDataFormat
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigPriVxFinder/InDetTrigPriVxFinder/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigPriVxFinder/InDetTrigPriVxFinder/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..296db39413d7863727cc43407aec6c60065309b9
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigPriVxFinder/InDetTrigPriVxFinder/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigPriVxFinder
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigRawDataProvider/InDetTrigRawDataProvider/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigRawDataProvider/InDetTrigRawDataProvider/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..ab252e47159c284c403e936b51cc3811b413e469
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigRawDataProvider/InDetTrigRawDataProvider/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigRawDataProvider
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackCollectionMerger/InDetTrigTrackCollectionMerger/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackCollectionMerger/InDetTrigTrackCollectionMerger/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..24a26fa62e10aeaa3a8bcf3e2065edcc67d36396
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackCollectionMerger/InDetTrigTrackCollectionMerger/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigTrackCollectionMerger
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackPRD_Association/InDetTrigTrackPRD_Association/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackPRD_Association/InDetTrigTrackPRD_Association/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..dc4f8b4c4efad26a0f1bad07c3566e1d0f47a216
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackPRD_Association/InDetTrigTrackPRD_Association/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigTrackPRD_Association
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/CMakeLists.txt b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/CMakeLists.txt
index 18e6f0072fb0a85ecec6e65898a8e5411207e03e..33f93154b6b185318b22c11cf5e2c7f93678a7bc 100644
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/CMakeLists.txt
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/CMakeLists.txt
@@ -21,6 +21,7 @@ atlas_depends_on_subdirs( PUBLIC
                           Trigger/TrigEvent/TrigSteeringEvent
                           Trigger/TrigSteer/TrigInterfaces
                           PRIVATE
+                          Control/CxxUtils
                           DetectorDescription/IdDictDetDescr
                           InnerDetector/InDetAlignTools/InDetAlignGenTools
                           InnerDetector/InDetDetDescr/InDetIdentifier
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..ab003298b3ebd37c7c834d0ad056dc70224cb643
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/TrigTrackResidualMonitor.h b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/TrigTrackResidualMonitor.h
index 61745c60cda779106d541a61a9bd4bdb6483d7e2..d67c3a0ed454843e83e9720eb6ba4ce5be4bbd4b 100644
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/TrigTrackResidualMonitor.h
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/InDetTrigTrackResidualMonitor/TrigTrackResidualMonitor.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 /////////////////////////////////////////////////////////////////////////////
@@ -25,6 +25,8 @@
 #include "TrigInterfaces/FexAlgo.h"
 #include "TrkEventPrimitives/ParticleHypothesis.h"
 
+#include "CxxUtils/checker_macros.h"
+ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // legacy trigger code
 
 class AtlasDetectorID;
 class Track;
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/src/TrigTrackResidualMonitor.cxx b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/src/TrigTrackResidualMonitor.cxx
index f2a75605efae84dd8b4c0f4223c1b2dd8d0211d6..13e52de7cab06ee3524ad9e3f7bdc717c95de817 100644
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/src/TrigTrackResidualMonitor.cxx
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackResidualMonitor/src/TrigTrackResidualMonitor.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 #include "InDetTrigTrackResidualMonitor/TrigTrackResidualMonitor.h"
@@ -40,6 +40,8 @@
 #include "TrkToolInterfaces/IResidualPullCalculator.h"
 #include "InDetReadoutGeometry/SiDetectorElement.h"
 
+ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // legacy trigger code
+
 namespace InDet
 {
 
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackSlimmer/InDetTrigTrackSlimmer/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackSlimmer/InDetTrigTrackSlimmer/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..016c94f09d0e2e83424055cfdea02aa2ed4de448
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTrackSlimmer/InDetTrigTrackSlimmer/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigTrackSlimmer
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigTruthAlgs/InDetTrigTruthAlgs/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigTruthAlgs/InDetTrigTruthAlgs/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..3d8ac755071ae7dc0e82bee3206fb7966e70963d
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigTruthAlgs/InDetTrigTruthAlgs/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigTruthAlgs
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/CMakeLists.txt b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/CMakeLists.txt
index f18b5f762bf87c50d51fb5171484d7d6d05007f5..e186c337ad0e3ae1bd684ab08e574140b531acbc 100644
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/CMakeLists.txt
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/CMakeLists.txt
@@ -14,6 +14,7 @@ atlas_depends_on_subdirs( PUBLIC
                           Trigger/TrigTools/TrigTrackJetFinderTool
                           PRIVATE
                           Control/AthContainers
+                          Control/CxxUtils
                           DetectorDescription/GeoPrimitives
                           DetectorDescription/IRegionSelector
                           Event/xAOD/xAODBase
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..d57605759cba7e4ba9f8b60a1fcea953fb29ccd0
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondary.h b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondary.h
index ff54e7903a47b5593dcf528df120cad90d1aa56a..767e6ac6e4da250192646d035411dcefa79451bd 100755
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondary.h
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondary.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 /** @file
@@ -24,6 +24,9 @@
 #include "xAODTracking/Vertex.h"
 #include "xAODTracking/VertexContainer.h"
 
+#include "CxxUtils/checker_macros.h"
+ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // legacy trigger code
+
 class StoreGateSvc;
 
 
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondaryCombo.h b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondaryCombo.h
index b6f2d9f99616fdcd5fade4bba9d60827768d0ff2..cbbbdc6d74c3c78a44b4d1b93586031c847f7cda 100755
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondaryCombo.h
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/InDetTrigVxSecondary/TrigVxSecondaryCombo.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 /** @file
@@ -25,6 +25,9 @@
 #include "xAODTracking/Vertex.h"
 #include "xAODTracking/VertexContainer.h"
 
+#include "CxxUtils/checker_macros.h"
+ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // legacy trigger code
+
 class StoreGateSvc;
 
 
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondary.cxx b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondary.cxx
index 2b3573b554c5fb548cb371f0f7057754b688a84b..07a4c03ecd998f97f8c5a518274cd0c006f119ff 100644
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondary.cxx
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondary.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 #include "InDetTrigVxSecondary/TrigVxSecondary.h"
@@ -17,6 +17,8 @@
 #include "xAODBase/IParticle.h"
 #include "xAODTracking/TrackParticleContainer.h"
 
+ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // legacy trigger code
+
 /* @brief Comparison operator for sorting objects of type VxContainer.
  * Enables vertices to be sorted in order of increasing chi2/NDoF
  */
diff --git a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondaryCombo.cxx b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondaryCombo.cxx
index 02c62d670804a07a7a6a3e9cae648e08cd70bb1b..c5735bf19da2fe430bc303867007b39b1dbddaa9 100644
--- a/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondaryCombo.cxx
+++ b/InnerDetector/InDetTrigRecAlgs/InDetTrigVxSecondary/src/TrigVxSecondaryCombo.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 */
 
 #include "InDetTrigVxSecondary/TrigVxSecondaryCombo.h"
@@ -19,6 +19,8 @@
 #include "xAODTracking/TrackParticleContainer.h"
 #include "AthContainers/ConstDataVector.h"
 
+ATLAS_NO_CHECK_FILE_THREAD_SAFETY;  // legacy trigger code
+
 /** @brief Comparison operator for sorting objects of type VxContainer.
  * Enables vertices to be sorted in order of increasing chi2/NDoF
  */
diff --git a/InnerDetector/InDetTrigRecAlgs/SiTrigSPSeededTrackFinder/SiTrigSPSeededTrackFinder/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/SiTrigSPSeededTrackFinder/SiTrigSPSeededTrackFinder/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..71112938ba7b9af566620a4bee403dfe64393d3d
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/SiTrigSPSeededTrackFinder/SiTrigSPSeededTrackFinder/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/SiTrigSPSeededTrackFinder
diff --git a/InnerDetector/InDetTrigRecAlgs/SiTrigSpacePointFormation/SiTrigSpacePointFormation/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/SiTrigSpacePointFormation/SiTrigSpacePointFormation/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..8ef1aada7e5770a5e023c921ccf86cb7ad4dd1f8
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/SiTrigSpacePointFormation/SiTrigSpacePointFormation/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/SiTrigSpacePointFormation
diff --git a/InnerDetector/InDetTrigRecAlgs/TRT_TrigSeededTrackFinder/TRT_TrigSeededTrackFinder/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/TRT_TrigSeededTrackFinder/TRT_TrigSeededTrackFinder/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..6d41692e29ddb04b0f33854c3e458a38f60498a1
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/TRT_TrigSeededTrackFinder/TRT_TrigSeededTrackFinder/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/TRT_TrigSeededTrackFinder
diff --git a/InnerDetector/InDetTrigRecAlgs/TRT_TrigStandaloneTrackFinder/TRT_TrigStandaloneTrackFinder/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/TRT_TrigStandaloneTrackFinder/TRT_TrigStandaloneTrackFinder/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..3999b92a228559591a8fdc95ffe56a0017e1c7d2
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/TRT_TrigStandaloneTrackFinder/TRT_TrigStandaloneTrackFinder/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/TRT_TrigStandaloneTrackFinder
diff --git a/InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackExtensionAlg/TRT_TrigTrackExtensionAlg/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackExtensionAlg/TRT_TrigTrackExtensionAlg/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..9d97507194a0f45f6bc60e152e14230e1289cbf0
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackExtensionAlg/TRT_TrigTrackExtensionAlg/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackExtensionAlg
diff --git a/InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackSegmentsFinder/TRT_TrigTrackSegmentsFinder/ATLAS_CHECK_THREAD_SAFETY b/InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackSegmentsFinder/TRT_TrigTrackSegmentsFinder/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..48d5c1abe13b074a3923c7528a1527b25ae070fc
--- /dev/null
+++ b/InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackSegmentsFinder/TRT_TrigTrackSegmentsFinder/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+InnerDetector/InDetTrigRecAlgs/TRT_TrigTrackSegmentsFinder