From d49be792bab2fb2d65ab4d9d8377eac03a31be8a Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf.pld@gmail.com>
Date: Wed, 6 Jun 2018 23:09:46 +0200
Subject: [PATCH] Cache bin containers in compare view.

---
 server/TracyView.cpp | 19 ++++++++++---------
 server/TracyView.hpp |  8 ++++++++
 2 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/server/TracyView.cpp b/server/TracyView.cpp
index 295ef43c..ee8074ee 100644
--- a/server/TracyView.cpp
+++ b/server/TracyView.cpp
@@ -4059,12 +4059,6 @@ void View::DrawFindZone()
     ImGui::End();
 }
 
-struct CompVal
-{
-    double v0;
-    double v1;
-};
-
 void View::DrawCompare()
 {
     ImGui::Begin( "Compare traces", &m_compare.show );
@@ -4258,10 +4252,17 @@ void View::DrawCompare()
                 const auto numBins = int64_t( w - 4 );
                 if( numBins > 1 )
                 {
-                    auto bins = std::make_unique<CompVal[]>( numBins );
-                    memset( bins.get(), 0, sizeof( CompVal ) * numBins );
+                    if( numBins != m_compare.numBins )
+                    {
+                        m_compare.numBins = numBins;
+                        m_compare.bins = std::make_unique<CompVal[]>( numBins );
+                        m_compare.binTime = std::make_unique<CompVal[]>( numBins );
+                    }
 
-                    auto binTime = std::make_unique<CompVal[]>( numBins );
+                    const auto& bins = m_compare.bins;
+                    const auto& binTime = m_compare.binTime;
+
+                    memset( bins.get(), 0, sizeof( CompVal ) * numBins );
                     memset( binTime.get(), 0, sizeof( CompVal ) * numBins );
 
                     if( m_compare.normalize )
diff --git a/server/TracyView.hpp b/server/TracyView.hpp
index 8a19679b..a5ad55ff 100644
--- a/server/TracyView.hpp
+++ b/server/TracyView.hpp
@@ -238,6 +238,12 @@ private:
         }
     } m_findZone;
 
+    struct CompVal
+    {
+        double v0;
+        double v1;
+    };
+
     struct {
         bool show = false;
         std::unique_ptr<Worker> second;
@@ -249,6 +255,8 @@ private:
         bool logTime = true;
         bool cumulateTime = false;
         bool normalize = false;
+        int64_t numBins = -1;
+        std::unique_ptr<CompVal[]> bins, binTime;
 
         void Reset()
         {