From 2f11e0e1e5c26c9a65b25aba527c8bbb7a72236e Mon Sep 17 00:00:00 2001
From: Sam Dieck <sam.dieck@gmail.com>
Date: Wed, 13 Dec 2017 00:46:53 -0600
Subject: [PATCH] Changed safequeue implementation to make it compatible with
 c++98

---
 src/CMakeLists.txt  |  1 -
 src/inc/safequeue.h | 22 +++++++---------------
 2 files changed, 7 insertions(+), 16 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 960ee27..c1df54e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -130,7 +130,6 @@ ELSE()
 ENDIF()
 
 
-set (CMAKE_CXX_STANDARD 11)
 set(CMAKE_CSS_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wall ")
 if (NOT IOS)
   ADD_EXECUTABLE( alpr  main.cpp )
diff --git a/src/inc/safequeue.h b/src/inc/safequeue.h
index 03e07ec..5e31299 100644
--- a/src/inc/safequeue.h
+++ b/src/inc/safequeue.h
@@ -2,9 +2,7 @@
 #define SAFE_QUEUE_H_
 
 #include <queue>
-#include <thread>
-#include <mutex>
-#include <condition_variable>
+#include "support/tinythread.h"
 
 template <typename T>
 class SafeQueue
@@ -12,20 +10,19 @@ class SafeQueue
     public:
         T pop() 
         {
-            std::unique_lock<std::mutex> mlock(_mutex);
+            tthread::lock_guard<tthread::mutex> mlock(_mutex);
             while (_queue.empty()) {
-                _cond.wait(mlock);
+                _cond.wait(_mutex);
             }
-            auto val = _queue.front();
+            T val = _queue.front();
             _queue.pop();
             return val;
         }
 
         void push(const T& item)
         {
-            std::unique_lock<std::mutex> mlock(_mutex);
+            tthread::lock_guard<tthread::mutex> mlock(_mutex);
             _queue.push(item);
-            mlock.unlock();
             _cond.notify_one();
         }
 
@@ -34,15 +31,10 @@ class SafeQueue
             return _queue.empty();
         }
 
-        SafeQueue() = default;
-        // Disable copying and assignments
-        SafeQueue(const SafeQueue&) = delete;
-        SafeQueue& operator=(const SafeQueue&) = delete;
-  
     private:
         std::queue<T> _queue;
-        std::mutex _mutex;
-        std::condition_variable _cond;
+        tthread::mutex _mutex;
+        tthread::condition_variable _cond;
 };
 
 #endif