From ceb31baf9762f106f13f6a1c747b806e4f6df362 Mon Sep 17 00:00:00 2001
From: Xiao YiFang <yifang.xiao@gmail.com>
Date: Fri, 17 Jun 2022 20:23:16 +0800
Subject: [PATCH] add mutex to getBlock

---
 chunkedstorage.cc | 2 +-
 file.hh           | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/chunkedstorage.cc b/chunkedstorage.cc
index 33de4099..69b155fe 100644
--- a/chunkedstorage.cc
+++ b/chunkedstorage.cc
@@ -137,7 +137,7 @@ char * Reader::getBlock( uint32_t address, vector< char > & chunk )
   // Read and decompress the chunk
   {
     // file.seek( offsets[ chunkIdx ] );
-
+    Mutex::Lock _( file.lock );
     auto bytes = file.map( offsets[ chunkIdx ], 8 );
     auto qBytes = QByteArray::fromRawData( reinterpret_cast< char * >(bytes), 8 );
     QDataStream in( qBytes );
diff --git a/file.hh b/file.hh
index 060c6b13..a69f3840 100644
--- a/file.hh
+++ b/file.hh
@@ -9,6 +9,7 @@
 #include <vector>
 #include <QFile>
 #include "ex.hh"
+#include "mutex.hh"
 
 /// A simple wrapper over FILE * operations with added write-buffering,
 /// used for non-Qt parts of code.
@@ -44,6 +45,7 @@ class Class
   void open( char const * filename, char const * mode ) ;
 
 public:
+  Mutex lock;
 
   Class( char const * filename, char const * mode ) ;