emscript on system.h

include/blt/std/system.h

@@ -7,11 +7,15 @@
 #ifndef BLT_SYSTEM_H
 #define BLT_SYSTEM_H
 
+#ifndef __EMSCRIPTEN__
     #ifdef _WIN32
     #include <intrin.h>
     #else
     #include <x86intrin.h>
     #endif
+#else
+    #include <chrono>
+#endif
 #include <cstdint>
 
 namespace blt::system {
@@ -21,7 +25,11 @@ namespace blt::system {
 //    #define GNU_INLINE
 //#endif
     inline std::uint64_t rdtsc(){
+#ifdef __EMSCRIPTEN__
+        return std::chrono::high_resolution_clock::now().time_since_epoch().count();
+#else
         return __rdtsc();
+#endif
     }
     // TODO: system memory and current CPU usage. (Linux Only currently)