Add simox::system_thread_id

SimoxUtility/CMakeLists.txt

@@ -86,6 +86,8 @@ SET(SOURCES
 
     shapes/AxisAlignedBoundingBox.cpp
     shapes/json_conversions.cpp
+
+    threads/system_thread_id.cpp
 )
 
 SET(INCLUDES
@@ -252,6 +254,8 @@ SET(INCLUDES
     shapes/json_conversions.h
 
     backport/span/gcc_header.h
+
+    threads/system_thread_id.h
 )
 
 simox_generate_subdir_headers(

SimoxUtility/threads.h

+#pragma once
+
+// This file is generated!
+
+#include "threads/system_thread_id.h"

SimoxUtility/threads/system_thread_id.cpp

+#include <syscall.h>
+#include <unistd.h>
+
+#include "system_thread_id.h"
+
+namespace simox
+{
+    long system_thread_id()
+    {
+        return syscall(SYS_gettid);
+    }
+}
+

SimoxUtility/threads/system_thread_id.h

+#pragma once
+
+namespace simox
+{
+    long system_thread_id();
+}
+