[PTI-LIB] Multi-threaded PTI Metrics Library Support (PTI-145, PTI-335)

- Added multi-thread support to PTI metrics library with thread-safe implementation 
- Redesigned PtiMetricsCollectorHandler by simplifying getters to be lock-free and const 
- Implemented string storage/pool class for efficient string management across threads 
- Added performance tests including overhead testing and multi-threaded functional tests
- Addressed code review feedback including Copilot suggestions and peer review comments

Signed-off-by: Yipeng Song <[email protected]>
Co-authored-by: Julia Fedorova <[email protected]>
Co-authored-by: Schilling, Matthew <[email protected]>
Co-authored-by: Copilot <[email protected]>

Author: 4 people

sdk/CMakeLists.txt

@@ -277,6 +277,7 @@ if(BUILD_TESTING AND PTI_BUILD_SAMPLES)
   add_subdirectory(samples/callback)
   add_subdirectory(samples/metrics_scope)
   add_subdirectory(samples/omp_vec_add)
+  add_subdirectory(samples/metrics_perf)
 endif()
 
 if(BUILD_TESTING AND PTI_BUILD_TESTING)

sdk/samples/metrics_perf/CMakeLists.txt

@@ -0,0 +1,29 @@
+cmake_minimum_required(VERSION 3.14)
+
+project(PTI_Samples_METRICS_PERF CXX)
+
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "Release")
+endif()
+
+include(CheckCXXCompilerFlag)
+check_cxx_compiler_flag("-fsycl" has_sycl)
+
+if(NOT has_sycl)
+  message(WARNING "${PROJECT_NAME} requires a sycl compatible compiler")
+  return()
+endif()
+
+add_executable(metrics_perf metrics_perf.cc)
+
+target_link_options(metrics_perf PUBLIC -fsycl)
+target_compile_options(metrics_perf PUBLIC -fsycl)
+target_include_directories(metrics_perf
+                           PRIVATE "${PROJECT_SOURCE_DIR}/../samples_utilities")
+
+if (NOT TARGET Pti::pti_view)
+  find_package(Pti REQUIRED)
+endif()
+
+target_link_libraries(metrics_perf PUBLIC Pti::pti_view LevelZero::level-zero)
+