* src/ejabberd_c2s.erl: Option to prevent the use of Erlang OTP supervisor for transient processes (EJAB-354).

* src/ejabberd_s2s_in.erl: Likewise.
* src/ejabberd_s2s_out.erl: Likewise.
* src/mod_muc/mod_muc_room.erl: Likewise.
* src/configure.ac: Likewise.
* src/configure: Likewise.
* src/Makefile.in: Likewise.
* src/mod_muc/Makefile.in: Likewise.

SVN Revision: 931

src/Makefile.in

@@ -30,6 +30,10 @@ ifeq (@full_xml@, true)
   ERLC_FLAGS+=-DFULL_XML_SUPPORT
 endif
 
+ifeq (@transient_supervisors@, false)
+  ERLC_FLAGS+=-DNO_TRANSIENT_SUPERVISORS
+endif
+
 prefix = @prefix@
 
 SUBDIRS = @mod_irc@ @mod_pubsub@ @mod_muc@ @mod_proxy65@ @eldap@ @web@ stringprep @tls@ @odbc@ @ejabberd_zlib@

src/configure

@@ -310,7 +310,7 @@ ac_includes_default="\
 #endif"
 
 ac_default_prefix=/
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT SET_MAKE ERLC ac_pt_ERLC ERL ac_pt_ERL ERLANG_CFLAGS ERLANG_LIBS LIBICONV CPP EGREP EXPAT_CFLAGS EXPAT_LIBS ZLIB_CFLAGS ZLIB_LIBS LIBOBJS mod_pubsub make_mod_pubsub mod_irc make_mod_irc mod_muc make_mod_muc mod_proxy65 make_mod_proxy65 eldap make_eldap web make_web tls make_tls odbc make_odbc ejabberd_zlib make_ejabberd_zlib roster_gateway_workaround db_type full_xml SSL_LIBS SSL_CFLAGS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT SET_MAKE ERLC ac_pt_ERLC ERL ac_pt_ERL ERLANG_CFLAGS ERLANG_LIBS LIBICONV CPP EGREP EXPAT_CFLAGS EXPAT_LIBS ZLIB_CFLAGS ZLIB_LIBS LIBOBJS mod_pubsub make_mod_pubsub mod_irc make_mod_irc mod_muc make_mod_muc mod_proxy65 make_mod_proxy65 eldap make_eldap web make_web tls make_tls odbc make_odbc ejabberd_zlib make_ejabberd_zlib roster_gateway_workaround db_type transient_supervisors full_xml SSL_LIBS SSL_CFLAGS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -852,6 +852,7 @@ Optional Features:
   --enable-ejabberd_zlib        enable ejabberd_zlib (default: yes)
   --enable-roster-gateway-workaround    Turn on workaround for processing gateway subscriptions (default: no)
   --enable-mssql    Use Microsoft SQL Server database (default: no, requires --enable-odbc)
+  --enable-transient_supervisors    Use Erlang supervision for transient process (default: yes)
   --enable-full-xml    Use XML features in XMPP stream (ex: CDATA) (default: no, requires XML compliant clients)
 
 Optional Packages:
@@ -4570,6 +4571,21 @@ else
 fi;
 
 
+# Check whether --enable-transient_supervisors or --disable-transient_supervisors was given.
+if test "${enable_transient_supervisors+set}" = set; then
+  enableval="$enable_transient_supervisors"
+  case "${enableval}" in
+  yes) transient_supervisors=true ;;
+  no)  transient_supervisors=false ;;
+  *) { { echo "$as_me:$LINENO: error: bad value ${enableval} for --enable-full-xml" >&5
+echo "$as_me: error: bad value ${enableval} for --enable-full-xml" >&2;}
+   { (exit 1); exit 1; }; } ;;
+esac
+else
+  transient_supervisors=true
+fi;
+
+
 # Check whether --enable-full_xml or --disable-full_xml was given.
 if test "${enable_full_xml+set}" = set; then
   enableval="$enable_full_xml"
@@ -5685,6 +5701,7 @@ s,@ejabberd_zlib@,$ejabberd_zlib,;t t
 s,@make_ejabberd_zlib@,$make_ejabberd_zlib,;t t
 s,@roster_gateway_workaround@,$roster_gateway_workaround,;t t
 s,@db_type@,$db_type,;t t
+s,@transient_supervisors@,$transient_supervisors,;t t
 s,@full_xml@,$full_xml,;t t
 s,@SSL_LIBS@,$SSL_LIBS,;t t
 s,@SSL_CFLAGS@,$SSL_CFLAGS,;t t

src/configure.ac

@@ -55,6 +55,15 @@ AC_ARG_ENABLE(mssql,
 esac],[db_type=generic])
 AC_SUBST(db_type)
 
+AC_ARG_ENABLE(transient_supervisors,
+[  --enable-transient_supervisors    Use Erlang supervision for transient process (default: yes)],
+[case "${enableval}" in
+  yes) transient_supervisors=true ;;
+  no)  transient_supervisors=false ;;
+  *) AC_MSG_ERROR(bad value ${enableval} for --enable-full-xml) ;;
+esac],[transient_supervisors=true])
+AC_SUBST(transient_supervisors)
+
 AC_ARG_ENABLE(full_xml,
 [  --enable-full-xml    Use XML features in XMPP stream (ex: CDATA) (default: no, requires XML compliant clients)],
 [case "${enableval}" in

src/ejabberd_c2s.erl

@@ -75,6 +75,15 @@
 -define(FSMOPTS, []).
 -endif.
 
+%% Module start with or without supervisor:
+-ifdef(NO_TRANSIENT_SUPERVISORS).
+-define(SUPERVISOR_START, gen_fsm:start(ejabberd_c2s, [SockData, Opts],
+					?FSMOPTS)).
+-else.
+-define(SUPERVISOR_START, supervisor:start_child(ejabberd_c2s_sup,
+						 [SockData, Opts])).
+-endif.
+
 -define(STREAM_HEADER,
 	"<?xml version='1.0'?>"
 	"<stream:stream xmlns='jabber:client' "
@@ -97,7 +106,7 @@
 %%% API
 %%%----------------------------------------------------------------------
 start(SockData, Opts) ->
-    supervisor:start_child(ejabberd_c2s_sup, [SockData, Opts]).
+    ?SUPERVISOR_START.
 
 start_link(SockData, Opts) ->
     gen_fsm:start_link(ejabberd_c2s, [SockData, Opts], ?FSMOPTS).

src/ejabberd_s2s_in.erl

@@ -57,6 +57,15 @@
 -define(FSMOPTS, []).
 -endif.
 
+%% Module start with or without supervisor:
+-ifdef(NO_TRANSIENT_SUPERVISORS).
+-define(SUPERVISOR_START, gen_fsm:start(ejabberd_s2s_in, [SockData, Opts],
+					?FSMOPTS)).
+-else.
+-define(SUPERVISOR_START, supervisor:start_child(ejabberd_s2s_in_sup,
+						 [SockData, Opts])).
+-endif.
+
 -define(STREAM_HEADER(Version),
 	("<?xml version='1.0'?>"
 	 "<stream:stream "
@@ -84,7 +93,7 @@
 %%% API
 %%%----------------------------------------------------------------------
 start(SockData, Opts) ->
-    supervisor:start_child(ejabberd_s2s_in_sup, [SockData, Opts]).
+    ?SUPERVISOR_START.
 
 start_link(SockData, Opts) ->
     gen_fsm:start_link(ejabberd_s2s_in, [SockData, Opts], ?FSMOPTS).

src/ejabberd_s2s_out.erl

@@ -58,6 +58,15 @@
 -define(FSMOPTS, []).
 -endif.
 
+%% Module start with or without supervisor:
+-ifdef(NO_TRANSIENT_SUPERVISORS).
+-define(SUPERVISOR_START, p1_fsm:start(ejabberd_s2s_out, [From, Host, Type],
+			    ?FSMOPTS)).
+-else.
+-define(SUPERVISOR_START, supervisor:start_child(ejabberd_s2s_out_sup,
+				      [From, Host, Type])).
+-endif.
+
 %% Only change this value if you now what your are doing:
 -define(FSMLIMITS,[]).
 %% -define(FSMLIMITS, [{max_queue, 2000}]).
@@ -86,7 +95,7 @@
 %%% API
 %%%----------------------------------------------------------------------
 start(From, Host, Type) ->
-    supervisor:start_child(ejabberd_s2s_out_sup, [From, Host, Type]).
+    ?SUPERVISOR_START.
 
 start_link(From, Host, Type) ->
     p1_fsm:start_link(ejabberd_s2s_out, [From, Host, Type],

src/mod_muc/Makefile.in

@@ -15,6 +15,11 @@ ifdef debug
   EFLAGS+=+debug_info
 endif
 
+ifeq (@transient_supervisors@, false)
+  EFLAGS+=-DNO_TRANSIENT_SUPERVISORS
+endif
+
+
 OBJS   = \
 	$(OUTDIR)/mod_muc.beam \
 	$(OUTDIR)/mod_muc_log.beam \

src/mod_muc/mod_muc_room.erl

@@ -94,16 +94,26 @@
 -define(FSMOPTS, []).
 -endif.
 
+%% Module start with or without supervisor:
+-ifdef(NO_TRANSIENT_SUPERVISORS).
+-define(SUPERVISOR_START, 
+	gen_fsm:start(?MODULE, [Host, ServerHost, Access, Room, HistorySize,
+				RoomShaper, Creator, Nick, DefRoomOpts],
+		      ?FSMOPTS)).
+-else.
+-define(SUPERVISOR_START, 
+	Supervisor = gen_mod:get_module_proc(ServerHost, ejabberd_mod_muc_sup),
+	supervisor:start_child(
+	  Supervisor, [Host, ServerHost, Access, Room, HistorySize, RoomShaper,
+		       Creator, Nick, DefRoomOpts])).
+-endif.
 
 %%%----------------------------------------------------------------------
 %%% API
 %%%----------------------------------------------------------------------
 start(Host, ServerHost, Access, Room, HistorySize, RoomShaper,
       Creator, Nick, DefRoomOpts) ->
-    Supervisor = gen_mod:get_module_proc(ServerHost, ejabberd_mod_muc_sup),
+    ?SUPERVISOR_START.
-    supervisor:start_child(
-      Supervisor, [Host, ServerHost, Access, Room, HistorySize, RoomShaper,
-		   Creator, Nick, DefRoomOpts]).
 
 start(Host, ServerHost, Access, Room, HistorySize, RoomShaper, Opts) ->
     Supervisor = gen_mod:get_module_proc(ServerHost, ejabberd_mod_muc_sup),