feat: added compilable cmake for core, added method to get physical core count.

core/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(src)

core/src/CMakeLists.txt

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+set(CORE_SRC
+  core.c
+)
+
+list(TRANSFORM CORE_SRC PREPEND ${CMAKE_CURRENT_LIST_DIR}/)
+
+include(FetchContent)
+
+find_package(OpenSSL REQUIRED)
+
+add_library(pigeon-core ${CORE_SRC})
+target_include_directories(pigeon-core PUBLIC ${CMAKE_CURRENT_LIST_DIR}/src)
+target_link_libraries(pigeon-core OpenSSL::SSL)

core/src/core.c

@@ -0,0 +1 @@
+

core/src/thread_util.h

@@ -0,0 +1,26 @@
+#ifndef THREAD_UTIL_H
+#define THREAD_UTIL_H
+
+#include <stdint.h>
+
+// Method return count of physical cores in system
+
+#if defined(_WIN32) || defined(_WIN64)
+#include <windows.h>
+
+size_t get_core_count(void) {
+  SYSTEM_INFO sys_info;
+  GetSystemInfo(&sys_info);
+
+  return (size_t)sys_info.dwNumberOfProcessors;
+}
+#elif defined(__unix__) || defined(__unix) ||                                  \
+    (defined(__APPLE__) && defined(__MACH__))
+#include <unistd.h>
+
+size_t get_core_count(void) { return (size_t)sysconf(_SC_NPROCESSORS_ONLN); }
+#else
+#error "Get core count feature not realised for current platform."
+#endif
+
+#endif // !THREAD_UTIL_H