Fix crashes on x-thread signal emission.

[dcpomatic.git] / src / lib / log.h

diff --git a/src/lib/log.h b/src/lib/log.h
index 2ba273b44dd09e2e254c3a914ce16d2829959cee..f83c6a90204ef675c93a89f7b0100f760c7efe01 100644 (file)
--- a/src/lib/log.h
+++ b/src/lib/log.h
@@ -24,9 +24,11 @@
  *  @brief A very simple logging class.
  */
 
-#include <string>
+#include <dcp/types.h>
 #include <boost/thread/mutex.hpp>
 #include <boost/filesystem.hpp>
+#include <boost/signals2.hpp>
+#include <string>
 
 /** @class Log
  *  @brief A very simple logging class.
@@ -40,16 +42,21 @@ public:
        static const int TYPE_GENERAL;
        static const int TYPE_WARNING;
        static const int TYPE_ERROR;
+       static const int TYPE_DEBUG;
        static const int TYPE_TIMING;
 
        void log (std::string message, int type);
        void microsecond_log (std::string message, int type);
+       void dcp_log (dcp::NoteType type, std::string message);
 
        void set_types (int types);
 
-protected:     
+       virtual std::string head_and_tail (int amount = 1024) const = 0;
+
+protected:
+       
        /** mutex to protect the log */
-       boost::mutex _mutex;
+       mutable boost::mutex _mutex;
        
 private:
        virtual void do_log (std::string m) = 0;
@@ -57,6 +64,7 @@ private:
        
        /** bit-field of log types which should be put into the log (others are ignored) */
        int _types;
+       boost::signals2::scoped_connection _config_connection;
 };
 
 class FileLog : public Log
@@ -64,6 +72,8 @@ class FileLog : public Log
 public:
        FileLog (boost::filesystem::path file);
 
+       std::string head_and_tail (int amount = 1024) const;
+
 private:
        void do_log (std::string m);
        /** filename to write to */
@@ -73,6 +83,9 @@ private:
 class NullLog : public Log
 {
 public:
+       std::string head_and_tail (int) const {
+               return "";
+       }
 
 private:       
        void do_log (std::string) {}