From c8a331c8000004ff68422e034332890c002b04c3 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Sun, 22 Apr 2018 21:54:56 +0200
Subject: Take some Log improvements from ODR-DabMux

---
 src/ConfigParser.cpp |  9 +++------
 src/Log.cpp          | 19 +++++++++----------
 src/Log.h            | 18 ++++++++++--------
 3 files changed, 22 insertions(+), 24 deletions(-)

diff --git a/src/ConfigParser.cpp b/src/ConfigParser.cpp
index 350c278..c90b150 100644
--- a/src/ConfigParser.cpp
+++ b/src/ConfigParser.cpp
@@ -123,8 +123,7 @@ static void parse_configfile(
 
     // log parameters:
     if (pt.GetInteger("log.syslog", 0) == 1) {
-        LogToSyslog* log_syslog = new LogToSyslog();
-        etiLog.register_backend(log_syslog);
+        etiLog.register_backend(make_shared<LogToSyslog>());
     }
 
     if (pt.GetInteger("log.filelog", 0) == 1) {
@@ -138,14 +137,12 @@ static void parse_configfile(
             throw std::runtime_error("Configuration error");
         }
 
-        LogToFile* log_file = new LogToFile(logfilename);
-        etiLog.register_backend(log_file);
+        etiLog.register_backend(make_shared<LogToFile>(logfilename));
     }
 
     std::string trace_filename = pt.Get("log.trace", "");
     if (not trace_filename.empty()) {
-        LogTracer* tracer = new LogTracer(trace_filename);
-        etiLog.register_backend(tracer);
+        etiLog.register_backend(make_shared<LogTracer>(trace_filename));
     }
 
 
diff --git a/src/Log.cpp b/src/Log.cpp
index 81f7955..15c02d0 100644
--- a/src/Log.cpp
+++ b/src/Log.cpp
@@ -3,10 +3,10 @@
    Her Majesty the Queen in Right of Canada (Communications Research
    Center Canada)
 
-   Copyright (C) 2016
+   Copyright (C) 2018
    Matthias P. Braendli, matthias.braendli@mpb.li
 
-    http://opendigitalradio.org
+    http://www.opendigitalradio.org
  */
 /*
    This file is part of ODR-DabMod.
@@ -26,7 +26,7 @@
  */
 
 #include <list>
-#include <stdarg.h>
+#include <cstdarg>
 #include <chrono>
 
 #include "Log.h"
@@ -41,10 +41,9 @@ using namespace std;
  */
 Logger etiLog;
 
-
-void Logger::register_backend(LogBackend* backend) {
+void Logger::register_backend(std::shared_ptr<LogBackend> backend)
+{
     backends.push_back(backend);
-    //log(info, "Registered new logger " + backend->get_name());
 }
 
 
@@ -68,13 +67,13 @@ void Logger::log(log_level_t level, const char* fmt, ...)
             size *= 2;
     }
 
-    logstr(level, str);
+    logstr(level, move(str));
 }
 
-void Logger::logstr(log_level_t level, std::string message)
+void Logger::logstr(log_level_t level, std::string&& message)
 {
-    log_message_t m(level, message);
-    m_message_queue.push(std::move(m));
+    log_message_t m(level, move(message));
+    m_message_queue.push(move(m));
 }
 
 void Logger::io_process()
diff --git a/src/Log.h b/src/Log.h
index df6e07b..1253635 100644
--- a/src/Log.h
+++ b/src/Log.h
@@ -3,10 +3,10 @@
    Her Majesty the Queen in Right of Canada (Communications Research
    Center Canada)
 
-   Copyright (C) 2016
+   Copyright (C) 2018
    Matthias P. Braendli, matthias.braendli@mpb.li
 
-    http://opendigitalradio.org
+    http://www.opendigitalradio.org
  */
 /*
    This file is part of ODR-DabMod.
@@ -42,6 +42,7 @@
 #include <string>
 #include <map>
 #include <mutex>
+#include <memory>
 #include <thread>
 #include "ThreadsafeQueue.h"
 
@@ -56,6 +57,7 @@ static const std::string levels_as_str[] =
 /** Abstract class all backends must inherit from */
 class LogBackend {
     public:
+        virtual ~LogBackend() {};
         virtual void log(log_level_t level, const std::string& message) = 0;
         virtual std::string get_name() const = 0;
 };
@@ -67,7 +69,7 @@ class LogToSyslog : public LogBackend {
             openlog(SYSLOG_IDENT, LOG_PID, SYSLOG_FACILITY);
         }
 
-        ~LogToSyslog() {
+        virtual ~LogToSyslog() {
             closelog();
         }
 
@@ -117,9 +119,9 @@ class LogTracer : public LogBackend {
 class LogLine;
 
 struct log_message_t {
-    log_message_t(log_level_t _level, const std::string& _message) :
+    log_message_t(log_level_t _level, std::string&& _message) :
         level(_level),
-        message(_message) {}
+        message(move(_message)) {}
 
     log_message_t() :
         level(debug),
@@ -142,12 +144,12 @@ class Logger {
             m_io_thread.join();
         }
 
-        void register_backend(LogBackend* backend);
+        void register_backend(std::shared_ptr<LogBackend> backend);
 
         /* Log the message to all backends */
         void log(log_level_t level, const char* fmt, ...);
 
-        void logstr(log_level_t level, std::string message);
+        void logstr(log_level_t level, std::string&& message);
 
         /* All logging IO is done in another thread */
         void io_process(void);
@@ -157,7 +159,7 @@ class Logger {
         LogLine level(log_level_t level);
 
     private:
-        std::list<LogBackend*> backends;
+        std::list<std::shared_ptr<LogBackend> > backends;
 
         ThreadsafeQueue<log_message_t> m_message_queue;
         std::thread m_io_thread;
-- 
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