Merge branch 'dev' of super:otp into dev

* 'dev' of super:otp: (166 commits)
  Corrected documentation error and added examples to Users Guide
  In TLS 1.1, failure to properly close a connection no longer requires that a session not be resumed.  This is a change from TLS 1.0 to conform with widespread implementation practice.  Erlang ssl will now in TLS 1.0 conform to the widespread implementation practice instead of the specification to avoid performance issues.
  Add escript to bootstrap/bin
  Remove unused variable warning in inet_res
  Remove unused variable in epmd_port
  Remove compiler warnings in inet_drv
  Add SASL test suite
  Allow same module name in multiple applications if explicitely excluded
  Fix bugs concerning the option report_missing_types
  Fix default encoding in SAX parser.
  re: remove gratuitous "it " in manpage
  Spelling in (backward *compatibility*) comment.
  Improve erl_docgen's support for Dialyzer specs and types
  dialyzer warning on mnesia_tm
  Add documentation text about majority checking
  add mnesia_majority_test suite
  where_to_wlock optimization + change_table_majority/2
  bug in mnesia_tm:needs_majority/2
  optimize sticky_lock maj. check
  check majority for sticky locks
  ...

1 files changed, 28 insertions, 16 deletions

diff --git a/lib/kernel/src/seq_trace.erl b/lib/kernel/src/seq_trace.erl
index 78c3040f21..ea5da2de1c 100644
--- a/lib/kernel/src/seq_trace.erl
+++ b/lib/kernel/src/seq_trace.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 1998-2009. All Rights Reserved.
+%% Copyright Ericsson AB 1998-2011. All Rights Reserved.
 %% 
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -38,15 +38,17 @@
 
 -type flag()       :: 'send' | 'receive' | 'print' | 'timestamp'.
 -type component()  :: 'label' | 'serial' | flag().
--type value()      :: non_neg_integer()
-                    | {non_neg_integer(), non_neg_integer()}
-                    | boolean().
--type token_pair() :: {component(), value()}.
+-type value()      :: (Integer :: non_neg_integer())
+                    | {Previous :: non_neg_integer(),
+                       Current :: non_neg_integer()}
+                    | (Bool :: boolean()).
 
 %%---------------------------------------------------------------------------
 
--type token() :: [] | {integer(), boolean(), _, _, _}.
--spec set_token(token()) -> token() | 'ok'.
+-opaque token() :: {integer(), boolean(), _, _, _}.
+-spec set_token(Token) -> PreviousToken | 'ok' when
+      Token :: [] | token(),
+      PreviousToken :: [] | token().
 
 set_token([]) ->
     erlang:seq_trace(sequential_trace_token,[]);
@@ -58,28 +60,35 @@ set_token({Flags,Label,Serial,_From,Lastcnt}) ->
 %% expects that, the BIF can however "unofficially" handle atoms as well, and
 %% atoms can be used if only Erlang nodes are involved
 
--spec set_token(component(), value()) -> token_pair().
+-spec set_token(Component, Val) -> {Component, OldVal} when
+      Component :: component(),
+      Val :: value(),
+      OldVal :: value().
 
 set_token(Type, Val) ->
     erlang:seq_trace(Type, Val).
 
--spec get_token() -> term().
+-spec get_token() -> [] | token().
 
 get_token() ->
     element(2,process_info(self(),sequential_trace_token)).
 
--spec get_token(component()) -> token_pair().
-
+-spec get_token(Component) -> {Component, Val} when
+      Component :: component(),
+      Val :: value().
 get_token(Type) ->
     erlang:seq_trace_info(Type).
 
--spec print(term()) -> 'ok'.
+-spec print(TraceInfo) -> 'ok' when
+      TraceInfo :: term().
 
 print(Term) ->
     erlang:seq_trace_print(Term),
     ok.
 
--spec print(integer(), term()) -> 'ok'.
+-spec print(Label, TraceInfo) -> 'ok' when
+      Label :: integer(),
+      TraceInfo :: term().
 
 print(Label, Term) when is_atom(Label) ->
     erlang:error(badarg, [Label, Term]);
@@ -94,14 +103,17 @@ reset_trace() ->
 
 %% reset_trace(Pid) -> % this might be a useful function too
 
--type tracer() :: pid() | port() | 'false'.
+-type tracer() :: (Pid :: pid()) | port() | 'false'.
 
--spec set_system_tracer(tracer()) -> tracer().
+-spec set_system_tracer(Tracer) -> OldTracer when
+      Tracer :: tracer(),
+      OldTracer :: tracer().
 
 set_system_tracer(Pid) ->
     erlang:system_flag(sequential_tracer, Pid).
 
--spec get_system_tracer() -> tracer().
+-spec get_system_tracer() -> Tracer when
+      Tracer :: tracer().
 
 get_system_tracer() ->
     element(2, erlang:system_info(sequential_tracer)).