From ddf2453ccae88b63d8364719ac1e58065cf4cbf0 Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf.pld@gmail.com>
Date: Sat, 30 Sep 2017 18:43:39 +0200
Subject: [PATCH] Buffer reads.

---
 server/TracyFileRead.hpp | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/server/TracyFileRead.hpp b/server/TracyFileRead.hpp
index c777c037..b7758a27 100755
--- a/server/TracyFileRead.hpp
+++ b/server/TracyFileRead.hpp
@@ -1,6 +1,7 @@
 #ifndef __TRACYFILEREAD_HPP__
 #define __TRACYFILEREAD_HPP__
 
+#include <algorithm>
 #include <stdio.h>
 
 namespace tracy
@@ -20,15 +21,36 @@ public:
         fclose( m_file );
     }
 
-    size_t Read( void* ptr, size_t size )
+    void Read( void* ptr, size_t size )
     {
-        return fread( ptr, 1, size, m_file );
+        auto dst = (char*)ptr;
+        while( size > 0 )
+        {
+            if( m_offset == BufSize )
+            {
+                fread( m_buf, 1, BufSize, m_file );
+                m_offset = 0;
+            }
+
+            const auto sz = std::min( size, BufSize - m_offset );
+            memcpy( dst, m_buf + m_offset, sz );
+            m_offset += sz;
+            dst += sz;
+            size -= sz;
+        }
     }
 
 private:
-    FileRead( FILE* f ) : m_file( f ) {}
+    FileRead( FILE* f )
+        : m_file( f )
+        , m_offset( BufSize )
+    {}
+
+    enum { BufSize = 64 * 1024 };
 
     FILE* m_file;
+    char m_buf[BufSize];
+    size_t m_offset;
 };
 
 }