Implement retrieval of external process names.

client/TracySysTrace.hpp

@@ -7,6 +7,8 @@
 
 #ifdef TRACY_HAS_SYSTEM_TRACING
 
+#include <stdint.h>
+
 namespace tracy
 {
 
@@ -14,6 +16,8 @@ bool SysTraceStart();
 void SysTraceStop();
 void SysTraceWorker( void* ptr );
 
+void SysTraceSendExternalName( uint64_t thread );
+
 }
 
 #endif