add deleter

Log.cpp

@@ -186,6 +186,19 @@ Entry::~Entry() {
 	log(lvl, ss.rdbuf());
 }
 
+Deleter::Deleter() {
+	if(refCount.fetch_add(1) == 0) {
+		init();
+	}
+}
+Deleter::~Deleter() {
+	if(refCount.fetch_sub(1) == 1) {
+		stop();
+	}
+}
+
+std::atomic<uint32_t> Deleter::refCount{0};
+
 std::vector<Entry::MetaFunction> entryMetaFunctions;
 
 std::ostream& defaultEntryMetaTime(std::ostream& os, const Entry& e) {

Log.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <atomic>
 #include <functional>  // std::function
 #include <sstream>  // std::stringstream (buffer for log entries)
 #include <string>
@@ -100,6 +101,15 @@ public:
 	}
 };
 
+// class to automatically stop the logger on destruction
+class Deleter {
+public:
+	Deleter();
+	~Deleter();
+private:
+	static std::atomic<uint32_t> refCount;
+};
+
 extern std::vector<Entry::MetaFunction> entryMetaFunctions;
 
 std::ostream& defaultEntryMetaTime(std::ostream&, const Entry&);