Switch permchannels and xline_db from OnBackgroundTimer to a Timer.

docs/conf/modules.conf.example

@@ -1658,7 +1658,12 @@
 #
 # If 'listmodes' is true then all list modes (+b, +I, +e, +g...) will be
 # saved. Defaults to false.
-#<permchanneldb filename="permchannels.conf" listmodes="true">
+#
+# 'saveperiod' determines how often to check if the database needs to be
+# saved to disk. Defaults to every five seconds.
+#<permchanneldb filename="permchannels.conf"
+#               listmodes="true"
+#               saveperiod="5s">
 #<include file="permchannels.conf">
 #
 # You may also create channels on startup by using the <permchannels> block.
@@ -2316,8 +2321,9 @@
 # be a lot less bans to apply - as most of them will already be there.
 #<module name="xline_db">
 
-# Specify the filename for the xline database here.
-#<xlinedb filename="xline.db">
+# Specify the filename for the xline database and how often to check whether
+# the database needs to be saved here.
+#<xlinedb filename="xline.db" saveperiod="5s">
 
 #-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#
 #    ____                _   _____ _     _       ____  _ _   _        #

src/modules/m_permchannels.cpp

@@ -156,7 +156,10 @@ static bool WriteDatabase(PermChannel& permchanmode, Module* mod, bool save_list
 	return true;
 }
 
-class ModulePermanentChannels : public Module
+class ModulePermanentChannels
+	: public Module
+	, public Timer
+
 {
 	PermChannel p;
 	bool dirty;
@@ -165,7 +168,10 @@ class ModulePermanentChannels : public Module
 public:
 
 	ModulePermanentChannels()
-		: p(this), dirty(false), loaded(false)
+		: Timer(0, true)
+		, p(this)
+		, dirty(false)
+		, loaded(false)
 	{
 	}
 
@@ -174,6 +180,7 @@ public:
 		ConfigTag* tag = ServerInstance->Config->ConfValue("permchanneldb");
 		permchannelsconf = tag->getString("filename");
 		save_listmodes = tag->getBool("listmodes");
+		SetInterval(tag->getDuration("saveperiod", 5));
 
 		if (!permchannelsconf.empty())
 			permchannelsconf = ServerInstance->Config->Paths.PrependConfig(permchannelsconf);
@@ -265,11 +272,12 @@ public:
 			dirty = true;
 	}
 
-	void OnBackgroundTimer(time_t) CXX11_OVERRIDE
+	bool Tick(time_t) CXX11_OVERRIDE
 	{
 		if (dirty)
 			WriteDatabase(p, this, save_listmodes);
 		dirty = false;
+		return true;
 	}
 
 	void Prioritize() CXX11_OVERRIDE

src/modules/m_xline_db.cpp

@@ -22,11 +22,20 @@
 #include "xline.h"
 #include <fstream>
 
-class ModuleXLineDB : public Module
+class ModuleXLineDB
+	: public Module
+	, public Timer
 {
+ private:
 	bool dirty;
 	std::string xlinedbpath;
+
  public:
+	ModuleXLineDB()
+		: Timer(0, true)
+	{
+	}
+
 	void init() CXX11_OVERRIDE
 	{
 		/* Load the configuration
@@ -37,6 +46,7 @@ class ModuleXLineDB : public Module
 		 */
 		ConfigTag* Conf = ServerInstance->Config->ConfValue("xlinedb");
 		xlinedbpath = ServerInstance->Config->Paths.PrependData(Conf->getString("filename", "xline.db"));
+		SetInterval(Conf->getDuration("saveperiod", 5));
 
 		// Read xlines before attaching to events
 		ReadDatabase();
@@ -66,13 +76,14 @@ class ModuleXLineDB : public Module
 			dirty = true;
 	}
 
-	void OnBackgroundTimer(time_t now) CXX11_OVERRIDE
+	bool Tick(time_t) CXX11_OVERRIDE
 	{
 		if (dirty)
 		{
 			if (WriteDatabase())
 				dirty = false;
 		}
+		return true;
 	}
 
 	bool WriteDatabase()