rewriting signal system

CMakeLists.txt

@@ -10,7 +10,7 @@ find_package( Lua REQUIRED )
 include_directories ( ${LUA_INCLUDE_DIR} )
 
 # Setting Lsyncd sources.
-# Order here doesn't matter much.
+# Order doesn't matter here.
 set( LSYNCD_SRC
 	core/log.c
 	core/observe.c
@@ -51,6 +51,7 @@ include_directories("${PROJECT_BINARY_DIR}")
 # on initialization of Lsyncd.
 #
 set( MANTLE_CODE
+	${PROJECT_SOURCE_DIR}/signames.lua
 	${PROJECT_SOURCE_DIR}/mantle/array.lua
 	${PROJECT_SOURCE_DIR}/mantle/counter.lua
 	${PROJECT_SOURCE_DIR}/mantle/queue.lua
@@ -73,6 +74,13 @@ set( MANTLE_CODE
 	${PROJECT_SOURCE_DIR}/mantle/userenv.lua
 )
 
+# Generates the signal list for this system
+add_custom_command( OUTPUT signames.lua
+	COMMAND ${CMAKE_COMMAND} -E echo "Generating signal name list"
+	COMMAND ${PROJECT_SOURCE_DIR}/signames.sh signames.lua
+	DEPENDS signames.sh
+)
+
 # The default sync implementations.
 #
 # Order here matters as the scripts lua will be executed in this order

core/main.c

@@ -339,11 +339,19 @@ main1( int argc, char *argv[] )
 		printf( "kernels clocks_per_sec=%ld\n", clocks_per_sec );
 	}
 
+	signal_init( );
+
+#ifdef WITH_INOTIFY
+	open_inotify( L );
+#endif
+
 	mci_load_mantle( L );
+
 	mci_load_default( L );
 
 	// checks if there is a "-help" or "--help"
 	{
+		// FIXME this should be done in mantle
 		int i;
 		for( i = argp; i < argc; i++ )
 		{
@@ -371,8 +379,8 @@ main1( int argc, char *argv[] )
 
 		while( argp < argc )
 		{
-			lua_pushstring( L, argv[ argp++ ] );
 			lua_pushnumber( L, idx++ );
+			lua_pushstring( L, argv[ argp++ ] );
 			lua_settable( L, -3 );
 		}
 
@@ -400,12 +408,6 @@ main1( int argc, char *argv[] )
 		lua_pop( L, 2 );
 	}
 
-	signal_init( );
-
-#ifdef WITH_INOTIFY
-	open_inotify( L );
-#endif
-
 	// checks existence of the config file
 	if( lsyncd_config_file )
 	{

core/mci.c

@@ -653,7 +653,6 @@ static const luaL_Reg corelib[ ] =
 //	{ "onsignal",       l_onsignal      },
 	{ "readdir",        l_readdir       },
 	{ "realdir",        l_realdir       },
-	{ "signames",       l_signames      },
 	{ "stackdump",      l_stackdump     },
 	{ "terminate",      l_terminate     },
 	{ NULL,             NULL            }

core/signal.c

@@ -112,29 +112,3 @@ signal_init( )
 }
 */
 
-
-/*
-| Forwards the result of psiginfo to mantle.
-|
-| Params on Lua stack:
-|
-| Returns on Lua stack:
-|     A table of all signalnames as keys and their signal number as value.
-*/
-int
-l_signames( lua_State * L )
-{
-	int i;
-
-	lua_newtable( L );
-
-	for( i = 0; i < NSIG; i++ )
-	{
-		lua_pushnumber( L, i );
-		lua_pushstring( L, strsignal( i ) );
-		lua_settable( L, -3 );
-	}
-
-	return 1;
-}
-

core/signal.h

@@ -18,7 +18,4 @@ extern volatile sig_atomic_t sigcode;
 // Initializes signal handling.
 extern void signal_init( );
 
-// returns signal name/signums as table
-int l_signames( lua_State * L );
-
 #endif

distclean.sh

@@ -1,5 +1,9 @@
 #!/bin/sh
-# removes all stuff generated by cmake / make
+#
+# Removes all stuff generated by cmake / make
+#
+# This mini script supposes an inplace build.
+#
 rm -rf build/ CMakeFiles/
 
 rm -f \
@@ -9,6 +13,7 @@ rm -f \
 	CMakeCache.txt \
 	cmake_install.cmake \
 	install_manifest.txt \
+	signames.lua \
 	default.c \
 	core.c \
 	*.o \

mantle/mci.lua

@@ -244,6 +244,12 @@ function mci.configure(
 	args,     -- arguments given by user
 	monitors  -- list of monitors the core can do
 )
+	print( "mci.configure", #args )
+
+	for k, v in pairs( args ) do
+		print( 'a', k, v )
+	end
+
 	Monitor.initialize( monitors )
 
 	--
@@ -380,16 +386,11 @@ function mci.initialize
 	firstTime  --  true when Lsyncd startups the first time,
 	--         --  false on resets, due to HUP signal or monitor queue overflow.
 )
+	print( 'HELLO' )
 	do
-		local signames = core.signames( )
+		for num, name in pairs( signames )
-		local signum = 0
-		signame = signames[ 0 ]
-
-		while signame ~= nil
 		do
-			print( 'SIG', signum, signame )
+			print( 'SIG', num, name )
-			signum = signum + 1
-			signame = signames[ signum ]
 		end
 	end
 

signames.sh

@@ -4,27 +4,35 @@
 # Creates a .lua file for all signal names understood by the kill command
 # on the system Lsyncd is being compiled for.
 #
+# This script has been tested with bash and dash.
+#
 # License: GPLv2 (see COPYING) or any later version
 # Authors: Axel Kittenberger <axkibe@gmail.com>
 #
 KILL=/bin/kill
 
+
 if [ "$#" -ne 1 ];
 then
 	echo >&2 "$0 needs excatly one argument -- the lua file to create"
 	exit 1
 fi
 
+if ! [ "$BASH_VERSION" = '' ];
+then
+	echoe=-e
+fi
+
 echo "-- This file is autogenerated by $0 querying `$KILL --version`" > $1
-echo "siglist =" >> $1
+echo "signames =" >> $1
 echo "{" >> $1
 
 n=1
 while name=`kill -l $n 2>/dev/null`;
 do
-	if [[ $name ]]
+	if ! [ -z $name ]
 	then
-		echo -e "\t[ $n ] = '$name'," >> $1
+		echo $echoe "\t[ $n ] = '$name'," >> $1
 	fi
 	n=$(( n + 1 ))
 done