diff options
| -rw-r--r-- | lib/runtime_tools/src/dbg.erl | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/lib/runtime_tools/src/dbg.erl b/lib/runtime_tools/src/dbg.erl index 446de63064..385047ee73 100644 --- a/lib/runtime_tools/src/dbg.erl +++ b/lib/runtime_tools/src/dbg.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2010. All Rights Reserved. +%% Copyright Ericsson AB 1996-2011. 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 @@ -32,7 +32,7 @@ -export([fun2ms/1]). %% Local exports --export([erlang_trace/3,get_info/0]). +-export([erlang_trace/3,get_info/0,deliver_and_flush/1]). %% Debug exports -export([wrap_presort/2, wrap_sort/2, wrap_postsort/1, wrap_sortfix/2, @@ -348,17 +348,16 @@ trace_port_control(Operation) -> trace_port_control(node(), Operation). trace_port_control(Node, flush) -> - Ref = erlang:trace_delivered(all), - receive - {trace_delivered,all,Ref} -> ok - end, - case trace_port_control(Node, $f, "") of - {ok, [0]} -> - ok; - {ok, _} -> - {error, not_supported_by_trace_driver}; - Other -> - Other + case get_tracer(Node) of + {ok, Port} when is_port(Port) -> + case catch rpc:call(Node,?MODULE,deliver_and_flush,[Port]) of + [0] -> + ok; + _ -> + {error, not_supported_by_trace_driver} + end; + _ -> + {error, no_trace_driver} end; trace_port_control(Node,get_listen_port) -> case trace_port_control(Node,$p, "") of @@ -378,7 +377,14 @@ trace_port_control(Node, Command, Arg) -> {error, no_trace_driver} end. - +%% A bit more than just flush - it also makes sure all trace messages +%% are delivered first, before flushing the driver. +deliver_and_flush(Port) -> + Ref = erlang:trace_delivered(all), + receive + {trace_delivered,all,Ref} -> ok + end, + erlang:port_control(Port, $f, ""). trace_port(file, {Filename, wrap, Tail}) -> @@ -684,18 +690,12 @@ loop({C,T}=SurviveLinks, Table) -> %% tracing on the node it removes from the list of active trace nodes, %% we will call erlang:trace_delivered/1 on ALL nodes that we have %% connections to. - Delivered = fun() -> - Ref = erlang:trace_delivered(all), - receive - {trace_delivered,all,Ref} -> ok - end - end, - catch rpc:multicall(nodes(), erlang, apply, [Delivered,[]]), - Ref = erlang:trace_delivered(all), - receive - {trace_delivered,all,Ref} -> - exit(done) - end; + %% If it is a file trace driver, we will also flush the port. + lists:foreach(fun({Node,{_Relay,Port}}) -> + rpc:call(Node,?MODULE,deliver_and_flush,[Port]) + end, + get()), + exit(done); {From, {link_to, Pid}} -> case (catch link(Pid)) of {'EXIT', Reason} -> |