Enable shared memory hits for HMPID

Author: sawenzel

Detectors/HMPID/base/include/HMPIDBase/Hit.h

@@ -12,16 +12,33 @@
 #define DETECTORS_HMPID_BASE_INCLUDE_HMPIDBASE_HIT_H_
 
 #include "SimulationDataFormat/BaseHits.h"
+#include "CommonUtils/ShmAllocator.h"
 
 namespace o2
 {
 namespace hmpid
 {
 
 // define HMPID hit type
-using HitType = o2::BasicXYZEHit<float>;
+class HitType : public o2::BasicXYZEHit<float>
+{
+ public:
+  using Base = o2::BasicXYZEHit<float>;
+  using Base::Base;
+  ClassDef(HitType, 1);
+};
 
 } // namespace hmpid
 } // namespace o2
 
+#ifdef USESHM
+namespace std
+{
+template <>
+class allocator<o2::hmpid::HitType> : public o2::utils::ShmAllocator<o2::hmpid::HitType>
+{
+};
+} // namespace std
+#endif
+
 #endif /* DETECTORS_HMPID_BASE_INCLUDE_HMPIDBASE_HIT_H_ */

Detectors/HMPID/base/src/HMPIDBaseLinkDef.h

@@ -16,6 +16,8 @@
 
 #pragma link C++ class o2::hmpid::Param + ;
 #pragma link C++ class o2::hmpid::Digit + ;
-#pragma link C++ class vector < o2::hmpid::Digit> + ;
+#pragma link C++ class vector<o2::hmpid::Digit>+;
+#pragma link C++ class o2::hmpid::HitType+;
+#pragma link C++ class vector<o2::hmpid::HitType>+;
 
 #endif

Detectors/HMPID/simulation/include/HMPIDSimulation/Detector.h

@@ -86,4 +86,18 @@ class Detector : public o2::Base::DetImpl<Detector>
 } // end namespace hmpid
 } // end namespace o2
 
+// enable shared mem for HMPID
+#ifdef USESHM
+namespace o2
+{
+namespace Base
+{
+template <>
+struct UseShm<o2::hmpid::Detector> {
+  static constexpr bool value = true;
+};
+} // namespace Base
+} // namespace o2
+#endif
+
 #endif /* ALICEO2_HMPID_DETECTOR_H_ */

cmake/O2Dependencies.cmake

@@ -1598,13 +1598,15 @@ o2_define_bucket(
     Geom
     SimulationDataFormat
     CommonDataFormat
-
+    CommonUtils
+    
     INCLUDE_DIRECTORIES
     ${FAIRROOT_INCLUDE_DIR}
     ${CMAKE_SOURCE_DIR}/DataFormats/simulation/include
     ${CMAKE_SOURCE_DIR}/DataFormats/common/include
     ${CMAKE_SOURCE_DIR}/Common/MathUtils/include
     ${CMAKE_SOURCE_DIR}/Detectors/HMPID/base/include
+    ${CMAKE_SOURCE_DIR}/Common/Utils/include
 )
 
 o2_define_bucket(