From 51f5ae4796fb2d1b47180c963f8f1d727c44e266 Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf.pld@gmail.com>
Date: Tue, 17 Oct 2017 01:07:54 +0200
Subject: [PATCH] More precise profiler init end time measurement.

---
 client/TracyProfiler.cpp | 10 +++++++---
 client/TracyProfiler.hpp |  2 +-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/client/TracyProfiler.cpp b/client/TracyProfiler.cpp
index b2f4bb15..b9ce909b 100644
--- a/client/TracyProfiler.cpp
+++ b/client/TracyProfiler.cpp
@@ -102,7 +102,8 @@ static Profiler init_order(104) s_profiler;
 
 
 Profiler::Profiler()
-    : m_mainThread( GetThreadHandle() )
+    : m_timeBegin( 0 )
+    , m_mainThread( GetThreadHandle() )
     , m_epoch( std::chrono::duration_cast<std::chrono::seconds>( std::chrono::system_clock::now().time_since_epoch() ).count() )
     , m_shutdown( false )
     , m_stream( LZ4_createStream() )
@@ -120,12 +121,13 @@ Profiler::Profiler()
 
     CalibrateTimer();
     CalibrateDelay();
-    uint32_t cpu;
-    m_timeBegin = GetTime( cpu );
 
     s_thread = (Thread*)tracy_malloc( sizeof( Thread ) );
     new(s_thread) Thread( LaunchWorker, this );
     SetThreadName( s_thread->Handle(), "Tracy Profiler" );
+
+    uint32_t cpu;
+    m_timeBegin.store( GetTime( cpu ), std::memory_order_relaxed );
 }
 
 Profiler::~Profiler()
@@ -155,6 +157,8 @@ void Profiler::Worker()
     ListenSocket listen;
     listen.Listen( "8086", 8 );
 
+    while( m_timeBegin.load( std::memory_order_relaxed ) == 0 ) std::this_thread::sleep_for( std::chrono::milliseconds( 10 ) );
+
     for(;;)
     {
         for(;;)
diff --git a/client/TracyProfiler.hpp b/client/TracyProfiler.hpp
index b4d4d293..ae8790af 100644
--- a/client/TracyProfiler.hpp
+++ b/client/TracyProfiler.hpp
@@ -177,7 +177,7 @@ private:
     double m_timerMul;
     uint64_t m_resolution;
     uint64_t m_delay;
-    int64_t m_timeBegin;
+    std::atomic<int64_t> m_timeBegin;
     uint64_t m_mainThread;
     uint64_t m_epoch;
     std::atomic<bool> m_shutdown;