From 6f7543c7dc2964e89439ab7f70c336046f06ac23 Mon Sep 17 00:00:00 2001
From: Matthias Hochsteger <mhochsteger@cerbsim.com>
Date: Fri, 11 Jun 2021 10:08:06 +0200
Subject: [PATCH] Timer - convenience constructors to disable tracing and/or
 timing

Examples:
Timer t0("name");
Timer t1("name", NoTracing);
Timer t2("name", NoTiming);
Timer t3("name", NoTracing, NoTiming);
Timer t4("name", NoTiming, NoTracing);
---
 libsrc/core/profiler.hpp | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/libsrc/core/profiler.hpp b/libsrc/core/profiler.hpp
index e6795f69..b8bd09e8 100644
--- a/libsrc/core/profiler.hpp
+++ b/libsrc/core/profiler.hpp
@@ -148,16 +148,42 @@ namespace ngcore
   };
 
 
+  namespace detail {
+      struct NoTracing_t{};
+      struct NoTiming_t{};
+  }
+
+  static detail::NoTracing_t NoTracing;
+  static detail::NoTiming_t NoTiming;
 
   template<bool DO_TRACING=true, bool DO_TIMING=true>
   class Timer
   {
     int timernr;
-  public:
-    Timer (const std::string & name)
+    int Init( const std::string & name )
     {
-      timernr = NgProfiler::CreateTimer (name);
+      return NgProfiler::CreateTimer (name);
     }
+  public:
+    Timer (const std::string & name) : timernr(Init(name))
+    { }
+
+    template<typename= std::enable_if<!DO_TRACING>>
+    Timer( const std::string & name, detail::NoTracing_t ) : timernr(Init(name))
+    { }
+
+    template<typename= std::enable_if<!DO_TIMING>>
+    Timer( const std::string & name, detail::NoTiming_t ) : timernr(Init(name))
+    { }
+
+    template<typename= std::enable_if<!DO_TRACING&&!DO_TIMING>>
+    Timer( const std::string & name, detail::NoTracing_t, detail::NoTiming_t ) : timernr(Init(name))
+    { }
+
+    template<typename= std::enable_if<!DO_TRACING&&!DO_TIMING>>
+    Timer( const std::string & name, detail::NoTiming_t, detail::NoTracing_t ) : timernr(Init(name))
+    { }
+
     void SetName (const std::string & name)
     {
       NgProfiler::SetName (timernr, name);