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authorBjörn Gustavsson <[email protected]>2012-05-04 11:51:56 +0200
committerSverker Eriksson <[email protected]>2012-06-12 12:09:29 +0200
commitd8cf532d04a5f588e19806767090ebb731af80bb (patch)
tree2c938c3f9ffedaf3d26efcf5b42f28486b886581 /lib/runtime_tools/src/inviso_rt.erl
parent1fc1233587a00b318ce15fd520b057dee726a7fc (diff)
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Remove the deprecated inviso application
Diffstat (limited to 'lib/runtime_tools/src/inviso_rt.erl')
-rw-r--r--lib/runtime_tools/src/inviso_rt.erl2885
1 files changed, 0 insertions, 2885 deletions
diff --git a/lib/runtime_tools/src/inviso_rt.erl b/lib/runtime_tools/src/inviso_rt.erl
deleted file mode 100644
index b162f5b045..0000000000
--- a/lib/runtime_tools/src/inviso_rt.erl
+++ /dev/null
@@ -1,2885 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 2005-2011. 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
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%%
-%% %CopyrightEnd%
-%%
-%% Description:
-%% The runtime component of the trace tool Inviso.
-%%
-%% Authors:
-%% Ann-Marie L�f, [email protected]
-%% Lennart �hman, [email protected]
-%% -----------------------------------------------------------------------------
-
--module(inviso_rt).
-
-
-%% -----------------------------------------------------------------------------
-%% interface for supervisor
-%% -----------------------------------------------------------------------------
--export([start_link_man/3,start_link_auto/1]).
-
-%% API for controll component.
--export([start/4,stop/1,
- init_tracing/2,stop_tracing_parallel/1,
- try_to_adopt/3,confirm_connection/2,get_node_info/1,
- suspend/2,call_suspend/2,cancel_suspension/1,change_options/2,
- clear/2,clear_all_tp/1,
- flush/1,
- trace_patterns_parallel/3,
- trace_flags_parallel/3,trace_flags_parallel/2,trace_flags_parallel/1,
- meta_tracer_call_parallel/2,
- get_status/1,get_tracerdata/1,list_logs/1,list_logs/2,fetch_log/2,fetch_log/3,
- delete_log/1,delete_log/2,
- state/1]).
-%% -----------------------------------------------------------------------------
-
-%% API mostly for autostart scripts, instead of corresponding control component
-%% apis not available doing local function calls.
--export([init_tracing/1,tp/4,tp/5,tp/1,tpg/4,tpg/5,tpg/1,
- tpl/4,tpl/5,tpl/1,
- ctp/1,ctp/3,ctpg/1,ctpg/3,ctpl/1,ctpl/3,
- init_tpm/4,init_tpm/7,
- tpm/4,tpm/5,tpm/8,tpm_tracer/4,tpm_tracer/5,tpm_tracer/8,
- tpm_ms/5,tpm_ms_tracer/5,
- ctpm_ms/4,
- local_register/0,global_register/0,
- ctpm/3,remove_local_register/0,remove_global_register/0,
- tf/2,tf/1,ctf/2,ctf/1]).
-%% -----------------------------------------------------------------------------
-
-%% Internal exports.
--export([init/4,auto_init/2,fetch_init/4]).
-%% -----------------------------------------------------------------------------
-
-%% -----------------------------------------------------------------------------
-%% Constants.
-%% -----------------------------------------------------------------------------
-
--define(DEFAULT_OVERLOAD_FUNC,default_overload_func).
--define(NO_LOADCHECK,no_loadcheck).
-
--define(RT_SUP,runtime_tools_sup). % Refers to the registered name.
--define(CTRL,inviso_c). % Refers to the registered name.
-%% -----------------------------------------------------------------------------
-
-%% -----------------------------------------------------------------------------
-%% Record definition.
-%% -----------------------------------------------------------------------------
-
-%% #rt
-%% All record fields must be bound to listed values when leaving init or
-%% auto_init.
-%% dependency: Timeout accepting being without control component.
-%% overload : Controlls which module to call, if any, when time for a check.
-%% timer_ref: Used when timing delayed shutdown due to lost control component.
--record(rt,{state = new, % new | idle | tracing
- status = running, % running | {suspended, Reason}
- next_loadcheck = now(), % now | "No Loadcheck"
- parent, % pid()
- tracerdata, % undefined|{fun(),term()}|{file,Param}|{ip,Param}
- tracer_port, % port() | undefined
- handler, % {fun(), term()} | undefined
- auto_starter, % pid() | undefined; proc starting interpreters.
- meta_tracer, % undefined | pid()
- fetchers=[], % [pid(),...] processes transfering logfiles.
-% spies = [],
- dependency={infinity,node()}, % {TOut,Node} | TOut; TOut=int()|infinity
- overload=no_loadcheck, % ?NO_LOADCHECK|{LoadMF,Interval,InitMFA,RemoveMFA}
- overload_data=void, % Datastructure given to LoadMF and RemoveMFA.
- timer_ref, % undefined | reference()
- ctrl, % undefined | pid()
- ctrl_ref, % undefined | reference()
- vsn, % list()
- tag % term()
- }).
-%% -----------------------------------------------------------------------------
-
-
-%% ==============================================================================
-%% Start API
-%% ==============================================================================
-
-%% Note that the runtime component may be started in many different ways.
-%% It can be autostarted by the runtime_tools_sup during initial start-up of the
-%% system. It is actually most likely that it will be started that way. However
-%% if there are no autostart trace-cases to run, the inviso_rt runtime component
-%% will terminate. It will then however remain as a child of the runtime_tools_sup
-%% supervisor. This means that if the runtime component is started again, manually,
-%% by the control component, some actions must be taken.
-%% For instance is it very likely that the child already exists. But since it
-%% must be started with different arguments when started manually, the child-spec
-%% must be changed.
-%%
-%% The runtime component is not a proper gen_server, to allow full control of
-%% what happens. It however mimcs gen_server behaviour to be managed by the
-%% runtime_tools_sup supervisor.
-
-
-%% start_link_auto(AutoModArgs)={ok,Pid}
-%%
-%% This function is entered into the child-spec when planning on doing autostart
-%% of the runtime component. The autostart is controlled by the so called
-%% inviso_autostart_mod. It is an application environment parameter of the
-%% runtime_tools application. If it exists, it shall point out a module name.
-%% If it does not exist, the default 'inviso_autostart' module will be tried.
-%% Note that these start_link functions do not implement proper otp-behaviour.
-%% For instance they return {ok,Pid} immediately making the init-phase of the
-%% runtime component process empty.
-%%
-%% The inviso_autostart_mod shall export one function:
-%% autostart(AutoModArgs) -> {MFA,Options,Tag}, where
-%% AutoModArgs=term(), comes from the application start parameters in the
-%% runtime_tools application resource file.
-%% MFA={Mod,Func,Args} | term().
-%% If it is MFA it will cause a trace initiator process to start spawning
-%% on spawn_link(Mod,Func,Args). The trace initiator may for instance
-%% initiate the wanted tracing.
-start_link_auto(AutoModArgs) ->
- {ok,spawn_link(?MODULE,auto_init,[AutoModArgs,self()])}.
-%% ------------------------------------------------------------------------------
-
-%% This function is entered into the child-specification of the runtime_tools_sup
-%% if the runtime component shall be started manually via the control component.
-start_link_man(Ctrl,Options,Tag) ->
- {ok,spawn_link(?MODULE,init,[Ctrl,Options,Tag,self()])}.
-%% ------------------------------------------------------------------------------
-
-%% start(Node,Options,Tag,Condition)=tbd
-%% Node=The node where the runtime component shall be started.
-%% Options=[Opt]; List of options to the runtime component.
-%% Opt={dependency,Val}|{dependency,{Val,Node}}
-%% Val=int()|infinity
-%% If the runtime component may run on its own or not. Val=0 means a runtime
-%% component which will terminate immediately without its control component.
-%% Note that if the runtime component is started manually, the Node part
-%% is never used. The runtime is supposed to be dependent of the Ctrl mentioned
-%% in the start_link_man parameters.
-%% Opt={overload,OverLoad} | overload
-%% The latter means no loadcheck. Necessary if changing the options.
-%% Overload=Iterval (int() in milliseconds) |
-%% {LoadMF,Interval}|{LoadMF,Interval,InitMFA,RemoveMFA}
-%% LoadMF={Mod,Func}|function()
-%% InitMFA,RemoveMFA={Mod,Func,ArgList} where
-%% apply(InitM,InitF,InitArgs) -> {ok,DataStruct}|'void'.
-%% apply(RemoveM,RemoveF,[DataStruct|Args]) -> don't care
-%% LoadMF is called each time loadcheck is performed.
-%% Mod:Func(DataStruct)->ok|{suspend,Reason}
-%% If just Interval is used, it means using a default overload check.
-%% Tag=term(), used to identify an incarnation of a runtime component so that
-%% a control component reconnecting will know if it was its own incarnation
-%% still alive, or some elses.
-%% Condition='if_ref'|term(). Controls if we want to adopt the runtime component.
-%% If 'if_ref' is stated it means that we only want to adopt a runtime component
-%% with the suggested Tag.
-%%
-%% This is the API used by the control component when tries to start a runtime
-%% component. Note that it will try to adopt an already running, if possible.
-%% Adoptions are only possible if the runtime component at hand is running
-%% without control component.
-start(Node, Options, Tag, Condition) when Node == node() ->
- ChildSpec = {?MODULE, {?MODULE, start_link_man, [self(), Options, Tag]},
- temporary, 5000, worker, [?MODULE]},
- case catch supervisor:start_child(?RT_SUP, ChildSpec) of
- {ok, Pid} when is_pid(Pid) ->
- {node_info, _Node, Pid, VSN, State, Status, _Tag} =
- get_node_info(Pid),
- {node_info, Node, Pid, VSN, State, Status, new};
- {error, already_present} ->
- supervisor:delete_child(?RT_SUP, ?MODULE),
- start(Node, Options, Tag, Condition);
- {error, {already_started, Pid}} ->
- try_to_adopt(Pid, Tag, Condition);
- {error,Reason} ->
- {error,Reason};
- {'EXIT',Reason} ->
- {error,Reason}
- end;
-start(Node, Options, Tag, Condition) ->
- case rt_version(Node) of
- {error,Error} ->
- {error,Error};
- _VSN ->
- ChildSpec = {?MODULE, {?MODULE, start_link_man,
- [self(), Options, Tag]},
- temporary, 5000, worker, [?MODULE]},
- case catch rpc:call(Node, supervisor, start_child,
- [?RT_SUP, ChildSpec]) of
- {ok, Pid} when is_pid(Pid) ->
- {node_info, _Node, Pid,
- VSN, State, Status, _Tag} = get_node_info(Pid),
- {node_info, Node, Pid, VSN, State, Status, new};
- {error, already_present} ->
- rpc:call(Node, supervisor, delete_child,
- [?RT_SUP, ?MODULE]),
- start(Node, Options, Tag, Condition);
- {error, {already_started, Pid}} ->
- try_to_adopt(Pid, Tag, Condition);
- {error,Reason} -> % Could not start child.
- {error,Reason};
- {badrpc,nodedown} ->
- {error,nodedown};
- {badrpc,Reason} ->
- {error,{badrpc,Reason}};
- {'EXIT',Reason} ->
- {error,Reason}
- end
- end.
-
-rt_version(Node) ->
- case catch rpc:call(Node,application,loaded_applications,[]) of
- List when is_list(List) ->
- case lists:keysearch(runtime_tools,1,List) of
- {value,{_,_,VSN}} ->
- VSN;
- false ->
- {error,not_loaded}
- end;
- {badrpc,nodedown} ->
- {error,nodedown};
- {'EXIT',Reason} ->
- {error,Reason}
- end.
-%% ------------------------------------------------------------------------------
-
-%% stop(Node)=ok|{error,Reason}
-%% Stops the runtim component on node Node. Note that this is mearly calling the
-%% supervisor API to shutdown the inviso_rt child belonging to the runtime_tools_sup.
-stop(Node) when Node==node() ->
- supervisor:terminate_child(?RT_SUP,?MODULE),
- supervisor:delete_child(?RT_SUP,?MODULE),
- ok;
-stop(Node) ->
- case catch rpc:call(Node,supervisor,terminate_child,[?RT_SUP,?MODULE]) of
- ok ->
- stop_delete_child(Node);
- {error,_} -> % No child running.
- stop_delete_child(Node); % Make sure we remove it also.
- {badrpc,Reason} ->
- {error,{badrpc,Reason}};
- {'EXIT',Reason} ->
- {error,Reason}
- end.
-
-stop_delete_child(Node) ->
- case catch rpc:call(Node,supervisor,delete_child,[?RT_SUP,?MODULE]) of
- ok ->
- ok;
- {error,_} -> % No child running.
- ok;
- {badrpc,Reason} ->
- {error,{badrpc,Reason}};
- {'EXIT',Reason} ->
- {error,Reason}
- end.
-%% ------------------------------------------------------------------------------
-
-
-%% ==============================================================================
-%% API for the control component.
-%% ==============================================================================
-
-%% init_tracing(TracerData) ->
-%% TracerData = LogTD | [{trace,LogTD},{ti,TiTD}]
-%% LogTD = {HandlerFun, Data} | collector |
-%% {relayer, pid()} | {ip, IPPortParameters} |
-%% {file, FilePortParameters}
-%% TiTD = {file,FileName} | {file,FileName,{InitPublLD,RemovePublLD,CleanPublLD}}
-%% | {relay,Node} | {relay,Node,{InitPublLD,RemovePublLD,CleanPublLD}}
-%% HandlerFun=fun(TraceMsg,Data)->NewData
-%% IPPortParameters = Portno | {Portno, Qsiz}
-%% Qsiz =
-%% FilePortParameters = {Filename, wrap, Tail, {time, WrapTime}, WrapCnt} |
-%% {FileName, wrap, Tail, WrapSize, WrapCnt} |
-%% {FileName, wrap, Tail, WrapSize} |
-%% {FileName, wrap, Tail} | FileName
-%% Defines a tracer:
-%% {HandlerFun, Data} - will be used as handler inside the runtime component for
-%% every incomming trace message.
-%% relayer - the runtime component will relay all comming trace messages to
-%% the runtime component Pid.
-%% collector - the runtime component is used as tracer or collector of relayed
-%% trace messages using the default handler writing them to io.
-%% ip | file - will start a tracer port using PortParameters
-init_tracing(Pid,TracerData) ->
- call(Pid,{init_tracing,TracerData}).
-%% ------------------------------------------------------------------------------
-
-%% stop_tracing(RTpids)=[{Node,NodeResult},...]
-%% RTpids=[RTinfo,...]
-%% RTinfo={RTpid,Node} | {{error,Reason},Node}
-%% NodeResult={ok,State} | {error,Reason}
-%% Sends a request to stop tracing to all nodes in RTpids, in parallel. Stop
-%% tracing means that all trace flags are removed and the nodes go to idle
-%% state.
-stop_tracing_parallel(RTpids) ->
- call_parallel(lists:map(fun({Pid,Node})->{Pid,Node,stop_tracing};
- (Error)->Error
- end,
- RTpids)).
-%% ------------------------------------------------------------------------------
-
-%% try_to_adopt(Pid,NewTag,Condition)=
-%% {node_info,node(),self(),VSN,State,Status,{tag,PreviousTag}}|{error,Reason}
-%% NewTag=term(), the identification tag we want the runtime component to use
-%% from now on if adoption was successful.
-%% Condition='if_ref', only adopt if current tag is NewTag.
-%% PreviousTag= the tag the runtime component had before it accepted the
-%% adoption.
-%% This function shall only be used by a control component wishing to adopt this
-%% runtime component.
-try_to_adopt(Pid, Tag, Condition) ->
- call(Pid,{try_to_adopt,Tag,Condition}).
-%% ------------------------------------------------------------------------------
-
-%% confirm_connection(Pid,Tag)= {node_info,node(),self(),VSN,State,Status,Tag}|
-%% {error,refused}.
-%% Must only be used by a control component having been contacted by the runtime
-%% component Pid. It confirms to the runtime component that the control component
-%% has accepted the connect request.
-confirm_connection(Pid,Tag) ->
- call(Pid,{confirm_connection,Tag}).
-%% ------------------------------------------------------------------------------
-
-%% get_node_info(Pid)={node_info,Node,Pid,VSN,State,Status,Tag}.
-get_node_info(Pid) ->
- call(Pid,get_node_info).
-%% ------------------------------------------------------------------------------
-
-%% suspend(NodeOrPid,Reason)=ok
-%% call_suspend(NodeOrPid,Reason)=ok
-%% Makes the runtime component and all of its helpers suspend. suspend/2 is
-%% assynchronous.
-suspend(NodeOrPid,Reason) ->
- cast(NodeOrPid,{suspend,Reason}).
-
-call_suspend(NodeOrPid,Reason) ->
- call(NodeOrPid,{suspend,Reason}).
-%% ------------------------------------------------------------------------------
-
-%% cancel_suspension(Pid)=ok
-%% Function moving the runtime component to status running. Regardless of its
-%% current status.
-cancel_suspension(Pid) ->
- call(Pid,cancel_suspension).
-%% ------------------------------------------------------------------------------
-
-%% change_options(Pid,Options)=ok
-%% Options=list(); see the start_link_XXX functions.
-%% Changes options according to Options list.
-%% Changing the control component we shall be depending on has no effect. The
-%% dependency value in self can however be changed, and takes effect immediately.
-change_options(Pid,Options) ->
- call(Pid,{change_options,Options}).
-%% ------------------------------------------------------------------------------
-
-%% clear_all_tp(Pid)=ok
-%% Function removing all, both local and global trace-patterns from the node.
-clear_all_tp(Pid) ->
- call(Pid,clear_all_tp).
-%% ------------------------------------------------------------------------------
-
-%% clear(Pid,Options)={ok,{new,Status}}
-%% Options=[Opt,...]
-%% Opt=keep_trace_patterns | keep_log_files
-%% Resets the runtime component to state 'new' by stopping all ongoing tracing,
-%% closing and removing all associated logfiles. The Options can be used to
-%% prevent the runtime component from being totally erased.
-clear(Pid,Options) ->
- call(Pid,{clear,Options}).
-%% ------------------------------------------------------------------------------
-
-%% flush(Pid)=ok | {error,Reason}
-%% Sends the flush command to the trace-port, if we are using a trace-port and
-%% are tracing.
-flush(Pid) ->
- call(Pid,flush).
-%% ------------------------------------------------------------------------------
-
-%% trace_patterns_parallel(RTpids,Args,Flags)=[{Node,Answer},...]
-%% RTpids=[{RTpid,Node},...] or [{Error,Node},...]
-%% Args=[Arg,...]
-%% Arg={Mod,Func,Arity,MS}|{Mod,Func,Arity,MS,Opts}
-%% Mod=atom()|reg_exp()|{Dir,reg_exp()}
-%% Dir=reg_exp()
-%% Answer=[Answer,...]
-%% Answer=int()|{error,Reason}
-%% API function for the control component sending trace-patterns to a list of
-%% runtime components. Returns a [{Node,Answer},...] list in the same order.
-trace_patterns_parallel(RTpids,Args,Flags) -> % Same args and flags for all.
- call_parallel(lists:map(fun({Pid,Node})when is_pid(Pid)->{Pid,Node,{tp,Args,Flags}};
- (Error)-> Error
- end,
- RTpids)).
-%% ------------------------------------------------------------------------------
-
-%% trace_flags_parallel(RTpids,Args,How)=
-%% trace_flags_parallel(RTpidsArgs,How)=
-%% trace_flags_parallel(RTpidsArgsHow)=[{Node,Reply},...]
-%% RTpids=[RTpidEntry,...]
-%% RTpidEntry={RTpid,Node}|{Error,Node}
-%% Error=term(), any term you wish to have as reply in Answer assoc. to Node.
-%% Args=[{Process,Flags},...]
-%% Process=pid()|registeredname()|'all'|'new'|'existing'
-%% Flags=List of the allowed process trace flags.
-%% RTpidsArgs=[RTpidArgEntry,...]
-%% RTpidArgEntry={RTpid,Node,Args}|{Error,Node}
-%% RTpidsArgsHow=[RTpidArgsHowEntry,...]
-%% RTpidArgsHowEntry={RTpid,Node,Args,How}|{Error,Node}
-%% How=true|false
-%% Reply={ok,Answers}
-%% Answers=[Answer,...], one for each Args and in the same order.
-%% Answer=int()|{error,Reason}
-%% API function used by the control component to send flags to a list of runtime
-%% components. Returns a list of [{Node,Answer},... ] in the same order.
-trace_flags_parallel(RTpids,Args,How) -> % Same args for every node!
- call_parallel(lists:map(fun({Pid,Node})when is_pid(Pid)->{Pid,Node,{tf,Args,How}};
- (Error)-> Error
- end,
- RTpids)).
-
-trace_flags_parallel(RTpidArgs,How) -> % Different args but same how.
- call_parallel(lists:map(fun({Pid,Node,Args})when is_pid(Pid)->
- {Pid,Node,{tf,Args,How}};
- (Error)->
- Error
- end,
- RTpidArgs)).
-
-trace_flags_parallel(RTpidArgsHow) -> % Both different args and hows.
- call_parallel(lists:map(fun({Pid,Node,Args,How})when is_pid(Pid)->
- {Pid,Node,{tf,Args,How}};
- (Error)->
- Error
- end,
- RTpidArgsHow)).
-%% ------------------------------------------------------------------------------
-
-%% meta_pattern(RTpids,Args)=[{Node,Answer},...]
-%% RTpids=[{RTpid,Node},...] or [{Error,Node},...]
-%% Args={FunctionName,ArgList}
-%% FunctionName=atom()
-%% ArgList=list(), list of the arguments to FunctionName.
-%% Answer=[Answer,...]
-%% Answer=int()|{error,Reason}
-%% Makes a call to the meta-tracer through its runtime component. Returns a list
-%% a answers in the same order as RTpids. Note that if "someone" has discovered
-%% that there is an error with a particular node, the error answer can be placed
-%% in the RTpids list from the start.
-meta_tracer_call_parallel(RTpids,Args) -> % Same args for all nodes.
- call_parallel(lists:map(fun({Pid,Node})when is_pid(Pid)->
- {Pid,Node,{meta_tracer_call,Args}};
- (Error)->
- Error
- end,
- RTpids)).
-%% ------------------------------------------------------------------------------
-
-%% get_status(Pid)={ok,{State,Status}}
-%% State=new|tracing|idle
-%% Status=running|{suspended,Reason}
-get_status(Pid) ->
- call(Pid,get_status).
-%% ------------------------------------------------------------------------------
-
-%% get_tracerdata(Pid)={ok,TracerData} | {ok,no_tracerdata} | {error,Reason}
-%% TracerData=see init_tracing
-%% Fetches the current tracerdata from the runtime component.
-get_tracerdata(Pid) ->
- call(Pid,get_tracerdata).
-%% ------------------------------------------------------------------------------
-
-%% list_log(Pid)={ok,no_log}|{ok,LogCollection}|{error,Reason}
-%% list_log(Pid,TracerData)=
-%% LogCollection=[LogTypes,...]
-%% LogTypes={trace_log,Dir,Files}|{ti_log,Dir,Files}
-%% Dir=string()
-%% Files=[FileNameWithoutDir,...]
-%% Lists all files associated with the current tracerdata. Or finds out which
-%% files there are stored in this node given a tracerdata.
-list_logs(Pid) ->
- call(Pid,list_logs).
-list_logs(Pid,TD) ->
- call(Pid,{list_logs,TD}).
-%% ------------------------------------------------------------------------------
-
-%% fetch_log(Pid,CollectPid)={ok,FetcherPid}|{complete,no_log}|{error,Reason}
-%% fetch_log(Pid,CollectPid,Spec)=
-%% CollectPid=pid(), the process which will be given the transfered logs.
-%% Spec=TracerData|LogCollection
-%% Transferes a number of files using ditributed Erlang to CollectPid. This
-%% function is supposed to be used internally by a control component. It returns
-%% when the transfer is initiated and does not mean it is done or successful.
-fetch_log(Pid,CollectPid) ->
- call(Pid,{fetch_log,CollectPid}).
-fetch_log(Pid,CollectPid,Spec) ->
- call(Pid,{fetch_log,CollectPid,Spec}).
-%% ------------------------------------------------------------------------------
-
-%% delete_log(Pid,TracerDataOrLogList)={ok,Results}|{error,Reason}
-%% TracerDataOrLogList=[FileNameWithPath,...]|LogCollection|TracerData
-%% Results=[LogType,...]
-%% LogType={trace_log,FileSpecs}|{ti_log,FilesSpecs}
-%% FilesSpecs=[FileSpec,...]
-%% FileSpec={ok,FileName}|{error,{Posix,FileName}}
-%% Filename=string(), the filename without dir-path.
-delete_log(Pid) ->
- call(Pid,delete_logs).
-delete_log(Pid,TracerDataOrLogList) ->
- call(Pid,{delete_logs,TracerDataOrLogList}).
-%% ------------------------------------------------------------------------------
-
-%% state(NodeOrPid)=LoopData
-%% Returns the loopdata of the runtime component. Only meant for debugging.
-state(NodeOrPid) ->
- call(NodeOrPid,state).
-%% ------------------------------------------------------------------------------
-
-
-%% ==============================================================================
-%% API for local calls made from the same node. E.g autostart.
-%% ==============================================================================
-
-%% init_tracing(TracerData)=
-%% See init_tracing/2.
-init_tracing(TracerData) ->
- call_regname(?MODULE,{init_tracing,TracerData}).
-%% ------------------------------------------------------------------------------
-
-
-%% Meaning that these function does most often not have to be called by a
-%% control component because there are more efficient ones above.
-
-%% tp(Module,Function,Arity,MatchSpec) ->
-%% tp(Module,Function,Arity,MatchSpec,Opts) ->
-%% tp(PatternList) ->
-%% Module = '_'|atom()|ModRegExp|{DirRegExp,ModRegExp}
-%% Function == atom() | '_'
-%% Arity = integer() | '_'
-%% MatchSpec = true | false | [] | matchspec() see ERTS User's guide for a
-%% description of match specifications.
-%% Opts=list(); 'only_loaded'
-%% PatternList = [Pattern],
-%% Pattern = {Module,Function,Arity,MatchSpec,Opts},
-%% Set trace pattern (global).
-tp(Module,Function,Arity,MatchSpec) ->
- tp(Module,Function,Arity,MatchSpec,[]).
-tp(Module,Function,Arity,MatchSpec,Opts) ->
- call_regname(?MODULE,{tp,[{Module,Function,Arity,MatchSpec,Opts}],[global]}).
-tp(PatternList) ->
- call_regname(?MODULE,{tp,PatternList,[global]}).
-%% ------------------------------------------------------------------------------
-
-tpg(Mod,Func,Arity,MatchSpec) ->
- tp(Mod,Func,Arity,MatchSpec).
-tpg(Mod,Func,Arity,MatchSpec,Opts) ->
- tp(Mod,Func,Arity,MatchSpec,Opts).
-tpg(PatternList) ->
- tp(PatternList).
-%% ------------------------------------------------------------------------------
-
-%% tpl(Module,Function,Arity,MatchSpec) ->
-%% tpl(Module,Function,Arity,MatchSpec,Opts) ->
-%% tpl(PatternList) ->
-%% Module = Function == atom() | '_' | RegExpMod | {RegExpDir,RegExpMod}
-%% Arity = integer() | '_'
-%% MatchSpec = true | false | [] | matchspec() see ERTS User's guide for a
-%% Opts=list(); 'only_loaded'
-%% description of match specifications.
-%% PatternList = [Pattern],
-%% Pattern = {Module, Function, Arity, MatchSpec},
-%% Set trace pattern (local).
-tpl(Module,Function,Arity,MatchSpec) ->
- call_regname(?MODULE,{tp,[{Module,Function,Arity,MatchSpec,[]}],[local]}).
-tpl(Module,Function,Arity,MatchSpec,Opts) ->
- call_regname(?MODULE,{tp,[{Module,Function,Arity,MatchSpec,Opts}],[local]}).
-tpl(PatternList) ->
- call_regname(?MODULE,{tp,PatternList,[local]}).
-%% ------------------------------------------------------------------------------
-
-%% ctp(Module,Function,Arity) ->
-%% ctp(PatternList)=
-%% Module = atom()|'_'|RegExpMod|{RegExpDir,RegExpMod}
-%% Function == atom() | '_'
-%% Arity = integer() | '_'
-%% PatternList=[{Mod,Func,Arity},...]
-%% Clear trace pattern (global).
-%% Note that it is possible to clear patterns using regexps. But we can for
-%% natural reasons only clear patterns for loaded modules. Further more there
-%% seems to be a fault in the emulator (<=R10B) crashing if we remove patterns
-%% for deleted modules. Therefore we use the only_loaded option.
-ctp(Module,Function,Arity) ->
- call_regname(?MODULE,{tp,[{Module,Function,Arity,false,[only_loaded]}],[global]}).
-ctp(PatternList) ->
- call_regname(?MODULE,
- {tp,
- lists:map(fun({M,F,A})->{M,F,A,false,[only_loaded]} end,PatternList),
- [global]}).
-%% ------------------------------------------------------------------------------
-
-ctpg(Mod,Func,Arity) ->
- ctp(Mod,Func,Arity).
-ctpg(PatternList) ->
- ctp(PatternList).
-%% ------------------------------------------------------------------------------
-
-%% ctpl(Module,Function,Arity) ->
-%% Module = atom()|'_'|RegExpMod|{RegExpDir,RegExpMod}
-%% Function == atom() | '_'
-%% Arity = integer() | '_'
-%% PatternList=[{Mod,Func,Arity},...]
-%% Clear trace pattern (local).
-ctpl(Module,Function,Arity) ->
- call_regname(?MODULE,{tp,[{Module,Function,Arity,false,[only_loaded]}],[local]}).
-ctpl(PatternList) ->
- call_regname(?MODULE,
- {tp,
- lists:map(fun({M,F,A})->{M,F,A,false,[only_loaded]} end,PatternList),
- [local]}).
-%% ------------------------------------------------------------------------------
-
-init_tpm(Mod,Func,Arity,CallFunc) ->
- call_regname(?MODULE,{meta_tracer_call,{init_tpm,[Mod,Func,Arity,CallFunc]}}).
-
-init_tpm(Mod,Func,Arity,InitFunc,CallFunc,ReturnFunc,RemoveFunc) ->
- call_regname(?MODULE,
- {meta_tracer_call,
- {init_tpm,
- [Mod,Func,Arity,InitFunc,CallFunc,ReturnFunc,RemoveFunc]}}).
-%% ------------------------------------------------------------------------------
-
-tpm(Mod,Func,Arity,MS) ->
- call_regname(?MODULE,{meta_tracer_call,{tpm,[Mod,Func,Arity,MS]}}).
-tpm(Mod,Func,Arity,MS,CallFunc) ->
- call_regname(?MODULE,{meta_tracer_call,{tpm,[Mod,Func,Arity,MS,CallFunc]}}).
-tpm(Mod,Func,Arity,MS,InitFunc,CallFunc,ReturnFunc,RemoveFunc) ->
- call_regname(?MODULE,
- {meta_tracer_call,
- {tpm,
- [Mod,Func,Arity,MS,InitFunc,CallFunc,ReturnFunc,RemoveFunc]}}).
-%% ------------------------------------------------------------------------------
-
-tpm_tracer(Mod,Func,Arity,MS) ->
- call_regname(?MODULE,{meta_tracer_call,{tpm_tracer,[Mod,Func,Arity,MS]}}).
-tpm_tracer(Mod,Func,Arity,MS,CallFunc) ->
- call_regname(?MODULE,{meta_tracer_call,{tpm_tracer,[Mod,Func,Arity,MS,CallFunc]}}).
-tpm_tracer(Mod,Func,Arity,MS,InitFunc,CallFunc,ReturnFunc,RemoveFunc) ->
- call_regname(?MODULE,
- {meta_tracer_call,
- {tpm_tracer,
- [Mod,Func,Arity,MS,InitFunc,CallFunc,ReturnFunc,RemoveFunc]}}).
-%% ------------------------------------------------------------------------------
-
-tpm_ms(Mod,Func,Arity,MSname,MS) ->
- call_regname(?MODULE,{meta_tracer_call,{tpm_ms,[Mod,Func,Arity,MSname,MS]}}).
-%% ------------------------------------------------------------------------------
-
-tpm_ms_tracer(Mod,Func,Arity,MSname,MS) ->
- call_regname(?MODULE,{meta_tracer_call,{tpm_ms_tracer,[Mod,Func,Arity,MSname,MS]}}).
-%% ------------------------------------------------------------------------------
-
-ctpm_ms(Mod,Func,Arity,MSname) ->
- call_regname(?MODULE,{meta_tracer_call,{ctpm_ms,[Mod,Func,Arity,MSname]}}).
-%% ------------------------------------------------------------------------------
-
-local_register() ->
- call_regname(?MODULE,{meta_tracer_call,{local_register,[]}}).
-%% ------------------------------------------------------------------------------
-
-global_register() ->
- call_regname(?MODULE,{meta_tracer_call,{global_register,[]}}).
-%% ------------------------------------------------------------------------------
-
-ctpm(Mod,Func,Arity) ->
- call_regname(?MODULE,{meta_tracer_call,{ctpm,[Mod,Func,Arity]}}).
-%% ------------------------------------------------------------------------------
-
-remove_local_register() ->
- call_regname(?MODULE,{meta_tracer_call,{remove_local_register,[]}}).
-%% ------------------------------------------------------------------------------
-
-remove_global_register() ->
- call_regname(?MODULE,{meta_tracer_call,{remove_global_register,[]}}).
-%% ------------------------------------------------------------------------------
-
-%% tf(PidSpec, FlagList) ->
-%% tf(TraceConfList) ->
-%% TraceConfList = [{PidSpec, FlagList}],
-%% FlagList = [Flags],
-%% PidSpec = all | new | existing | pid() | registeredname()
-%% Flags = all | send | 'receive' | procs | call | silent | return_to |
-%% running | garbage_collection | timestamp | cpu_timestamp | arity |
-%% set_on_spawn | set_on_first_spawn | set_on_link | set_on_first_link
-%% Set trace flags.
-tf(PidSpec, FlagList) ->
- call_regname(?MODULE,{tf,[{PidSpec,FlagList}],true}).
-
-tf(TraceConfList) ->
- call_regname(?MODULE,{tf,TraceConfList,true}).
-%% ------------------------------------------------------------------------------
-
-%% ctf(PidSpec, FlagList) ->
-%% ctf(TraceConfList) ->
-%% TraceConfList = [{PidSpec, FlagList}],
-%% FlagList = [Flags],
-%% PidSpec = all | new | existing | pid() | registeredname()
-%% Flags = all | send | 'receive' | procs | call | silent | return_to |
-%% running | garbage_collection | timestamp | cpu_timestamp | arity |
-%% set_on_spawn | set_on_first_spawn | set_on_link | set_on_first_link
-%% Clear trace flags.
-ctf(PidSpec, FlagList) ->
- call_regname(?MODULE,{tf,[{PidSpec,FlagList}],false}).
-
-ctf(TraceConfList) ->
- call_regname(?MODULE,{tf_as,TraceConfList,false}).
-%% ------------------------------------------------------------------------------
-
-
-%% ------------------------------------------------------------------------------
-%% Client side functions.
-%% ------------------------------------------------------------------------------
-
-%% Call function managing the client to server communication. This function may
-%% be run by a client on a different node.
-%% Note that we must use two different functions for calling a named process and
-%% calling the runtime component at a specified node.
-call(Pid,Request) when is_pid(Pid) ->
- call_2(Pid,Request);
-call(Node,Request) when Node==node() -> % To our node!
- call_2(?MODULE,Request);
-call(Node,Request) when is_atom(Node) ->
- call_2({?MODULE,Node},Request);
-call(To,_Request) ->
- {error,{badarg,To}}.
-
-call_regname(Name,Request) when is_atom(Name) -> % To a registered name.
- call_2(Name,Request).
-
-call_2(To,Request) ->
- MRef=erlang:monitor(process,To), % Use a monitor to avoid waiting for ever.
- Ref=make_ref(),
- case catch To ! {Request,self(),Ref} of % Can be a remote pid.
- {'EXIT',_} -> % If we use registered name.
- erlang:demonitor(MRef), % Maybe not necessary!?
- receive
- {'DOWN',MRef,_Type,_Obj,_Info} ->
- true
- after
- 0 ->
- true
- end,
- {error,not_started};
- _ -> % At least no obvious error.
- receive
- {Msg,Ref} ->
- erlang:demonitor(MRef),
- Msg;
- {'DOWN',MRef,_Type,_Obj,Info} -> % The runtime component disapeared.
- {error,{no_response,Info}}
- end
- end.
-%% -----------------------------------------------------------------------------
-
-%% Multicall function taking a list of [{Pid,Node,Request},...] and sends
-%% a request to every Pid. This function then also allows you to send multiple
-%% requests to the same Pid since it will sit and wait for all replies.
-%% Note that RTspec may also be an [{{error,Reason},Node},...]. That tuple will
-%% then be used as reply in the reply list.
-%% Returns [{Node,Reply},...] for every element in RTspec, in the same order.
-call_parallel(RTspec) ->
- Ref=make_ref(),
- {Nr,Pending}=call_parallel_2(RTspec,Ref,0,[]),
- Replies=call_parallel_3(Ref,Pending,Nr,[],[]),
- call_parallel_build_reply(RTspec,1,Replies).
-
-call_parallel_2([{Pid,Node,Request}|Rest],Ref,Nr,Pending) when is_pid(Pid) ->
- Pid ! {Request,self(),{Ref,Nr+1}},
- MRef=erlang:monitor(process,Pid), % So we won't wait for ever for it.
- call_parallel_2(Rest,Ref,Nr+1,[{Nr+1,Node,MRef}|Pending]);
-call_parallel_2([{{error,_Reason},_Node}|Rest],Ref,Nr,Pending) ->
- call_parallel_2(Rest,Ref,Nr,Pending); % Just skip it. This is no process.
-call_parallel_2([_Faulty|Rest],Ref,Nr,Pending) -> % Should not happend.
- call_parallel_2(Rest,Ref,Nr,Pending); % But we choose to skip it instead of crash.
-call_parallel_2([],_,Nr,Pending) ->
- {Nr,Pending}.
-
-%% Help function collecting reply-messages sent from the runtime components. We
-%% count down until we got a reply for every pending request. Or if we get a DOWN
-%% message indicating that the runtime component is no longer present. Note that
-%% we can by accident read away DOWN messages not belonging to this procedure.
-%% They are collected to be reissued after we are done.
-call_parallel_3(_Ref,_Pending,0,Replies,DownMsgs) -> % All expected received.
- lists:foreach(fun({MRef,Pid,Info}) -> self() ! {'DOWN',MRef,process,Pid,Info} end,
- DownMsgs), % Reissue the down messages!
- Replies;
-call_parallel_3(Ref,Pending,NrOfPending,Replies,DownMsgs) ->
- receive
- {Reply,{Ref,Nr}} ->
- case lists:keysearch(Nr,1,Pending) of
- {value,{_Nr,Node,MRef}} ->
- erlang:demonitor(MRef),
- call_parallel_3(Ref,Pending,NrOfPending-1,
- [{Nr,Node,Reply}|Replies],DownMsgs);
- false -> % Really strange!
- call_parallel_3(Ref,Pending,NrOfPending,Replies,DownMsgs)
- end;
- {'DOWN',MRef,process,Pid,Info} -> % Probably process we monitor terminated.
- case lists:keysearch(MRef,3,Pending) of
- {value,{Nr,Node,_}} -> % Yes it was one of our processes.
- call_parallel_3(Ref,Pending,NrOfPending-1,
- [{Nr,Node,{error,no_reponse}}|Replies],DownMsgs);
- false -> % We picked up a DOWN msg by misstake.
- call_parallel_3(Ref,Pending,NrOfPending,Replies,
- [{MRef,Pid,Info}|DownMsgs])
- end
- end.
-
-%% Help function which build up the [{Node,Reply},...] list in the same order as RTspec.
-call_parallel_build_reply([],_,_) ->
- [];
-call_parallel_build_reply([{Pid,Node,_Request}|Rest],Nr,Replies) when is_pid(Pid) ->
- {value,{_Nr,_Node,Reply}}=lists:keysearch(Nr,1,Replies),
- [{Node,Reply}|call_parallel_build_reply(Rest,Nr+1,Replies)];
-call_parallel_build_reply([{{error,Reason},Node}|Rest],Nr,Replies) ->
- [{Node,{error,Reason}}|call_parallel_build_reply(Rest,Nr,Replies)];
-call_parallel_build_reply([_Faulty|Rest],Nr,Replies) ->
- call_parallel_build_reply(Rest,Nr,Replies).
-%% ------------------------------------------------------------------------------
-
-cast(Pid,Request) when is_pid(Pid) ->
- cast2(Pid,Request);
-cast(Node,Request) when Node==node() ->
- catch cast2(?MODULE,Request),
- ok;
-cast(Node,Request) when is_atom(Node) ->
- catch cast2({?MODULE,Node},Request),
- ok;
-cast(BadAddress,_Request) ->
- {error,{badarg,BadAddress}}.
-
-cast2(To,Request) ->
- To ! {Request,void,void}. % Mimics the call protocol.
-%% ------------------------------------------------------------------------------
-
-
-%% ==============================================================================
-%% Implementation of the runtime component (server side).
-%% ==============================================================================
-
-%% Since the runtime component is not implemented using gen_sever we are "free"
-%% to use what ever functionnames we like.
-
-%% Initial function on which the runtime component is spawned on if started by
-%% a controlcomponent.
-init(Ctrl, Options, Tag, Parent) when is_list(Options) ->
- %% started from controller
- process_flag(trap_exit,true),
- register(?MODULE,self()), % Will crash if rt is already running
- do_clear_trace_patterns(), % Remove potential old patterns left.
- LD1=read_option_list(Options,
- #rt{state=new,
- parent=Parent,
- ctrl=Ctrl,
- vsn=get_application_vsn(),
- tag=Tag}),
- OverloadData=initialize_overload(LD1),
- CtrlRef=erlang:monitor(process,Ctrl), % Monitor our control component.
- loop1(LD1#rt{ctrl_ref=CtrlRef,overload_data=OverloadData}).
-%% ----------------------------------------------------------------------------
-
-%% Initial function on which the runtime component is spawned on if started
-%% by the runtime_tools supervisor. It is here it is determined if we shall
-%% autostart.
-auto_init(AutoModArgs,Parent) ->
- %% autostart
- process_flag(trap_exit, true),
- register(?MODULE, self()), % Will crash if a rt is already running
- AutoMod=get_autostart_module(), % Determine which module to use!
- case catch AutoMod:autostart(AutoModArgs) of
- {MFA,Options,Tag} ->
- do_clear_trace_patterns(), % Remove previously left patterns.
- LD1=read_option_list(Options,#rt{state=new,
- parent=Parent,
- vsn=get_application_vsn(),
- tag=Tag}),
- case auto_init_connect_control(LD1) of
- {ok,LD2} -> % Either connected or running_alone.
- OverloadData=initialize_overload(LD2),
- case auto_init_check_mfa(MFA) of
- {ok,{M,F,A}} -> % We shall start somekind of tracing!
- P=spawn_link(M,F,A), % It lives its own life, only link!
- loop1(LD2#rt{auto_starter=P,overload_data=OverloadData});
- false ->
- loop1(LD2#rt{overload_data=OverloadData})
- end;
- stop -> % Not allowed to run alone!
- true % Simply terminate.
- end;
- _ -> % Non existent or faulty autostart mod!
- true % Terminate normally.
- end.
-
-auto_init_connect_control(LD1) ->
- case auto_init_connect_find_pid(LD1#rt.dependency) of
- Pid when is_pid(Pid) -> % There is a control component.
- CtrlRef=erlang:monitor(process,Pid),
- Pid ! {connect,node(),self(),LD1#rt.vsn,LD1#rt.tag},
- {ok,LD1#rt{ctrl_ref=CtrlRef,ctrl=Pid}};
- _ -> % There is no control component.
- do_down_message(LD1) % Will return 'stop' or a LoopData.
- end.
-
-%% Help function which finds the pid of the control component.
-auto_init_connect_find_pid({_TimeOut,Node}) when Node==node() ->
- whereis(?CTRL);
-auto_init_connect_find_pid({_TimeOut,Node}) when is_atom(Node) ->
- rpc:call(Node,erlang,whereis,[?CTRL]);
-auto_init_connect_find_pid(_) -> % Node is not a proper node.
- undefined. % Act as could not find control comp.
-
-%% Help function checking that the parameter is reasonable to be used as
-%% spawn_link argument.
-auto_init_check_mfa({M,F,A}) when is_atom(M),is_atom(F),is_list(A) ->
- {ok,{M,F,A}};
-auto_init_check_mfa(_) ->
- false.
-
-%% Help function to init_auto which finds out which module to call for
-%% guidance on how to proceed. Returns an atom.
-get_autostart_module() ->
- case application:get_env(inviso_autostart_mod) of
- {ok,Mod} when is_atom(Mod) ->
- Mod;
- _ ->
- inviso_autostart % The default autostart module.
- end.
-%% ----------------------------------------------------------------------------
-
-
-%% This is the preloop function which performs loadcheck if necessary. Note
-%% that it calculates the timeout used in the after in the real loop. There is
-%% further no use doing overload checks if we are not tracing or already
-%% suspended. There is yet one more situation, we do not want to perform
-%% overload checks if the interval is set to infinity. This can be the case if
-%% we are using an external source pushing overload information instead.
-loop1(LD=#rt{overload=Overload}) ->
- if
- Overload/=?NO_LOADCHECK,element(2,Overload)/=infinity ->
- Now=now(),
- if
- LD#rt.status==running,
- LD#rt.state==tracing,
- Now>LD#rt.next_loadcheck -> % Do loadcheck only then!
- {NewLD,TimeOut}=do_check_overload(LD,{timeout,LD#rt.overload_data}),
- loop(NewLD,TimeOut);
- LD#rt.status==running,LD#rt.state==tracing ->
- Timeout=calc_diff_to_now(Now,LD#rt.next_loadcheck),
- loop(LD,Timeout);
- true -> % Do not spend CPU on this! :-)
- loop(LD,infinity)
- end;
- true -> % Either no check or infinity.
- loop(LD,infinity)
- end.
-
-loop(LoopData,Timeout) ->
- receive
- Msg when element(1,Msg)==trace_ts;
- element(1,Msg)==trace;
- element(1,Msg)==drop;
- element(1,Msg)==seq_trace ->
- case LoopData#rt.handler of
- {HandlerFun,Data} ->
- NewData=HandlerFun(Msg,Data),
- loop1(LoopData#rt{handler={HandlerFun,NewData}});
- _ ->
- loop1(LoopData)
- end;
- {{tp,Args,Flags},From,Ref} ->
- if
- LoopData#rt.status==running -> % Not when suspended.
- Reply=do_set_trace_patterns(Args,Flags),
- if
- LoopData#rt.state==new -> % No longer new when tp set.
- reply_and_loop({ok,Reply},From,Ref,LoopData#rt{state=idle});
- true ->
- reply_and_loop({ok,Reply},From,Ref,LoopData)
- end;
- true -> % We are suspended!
- reply_and_loop({error,suspended},From,Ref,LoopData)
- end;
- {{tf,Args,How},From,MRef} ->
- Reply=
- case How of
- true ->
- if
- LoopData#rt.status==running ->
- case {LoopData#rt.tracer_port,LoopData#rt.handler} of
- {Port,_} when is_port(Port) ->
- do_set_trace_flags(Port,Args,How);
- {_,{Handler,_D}} when is_function(Handler) ->
- do_set_trace_flags(self(),Args,How);
- _ ->
- {error,no_tracer}
- end;
- true -> % Can't turn *on* flags if suspended.
- {error, suspended}
- end;
- false -> % No tracer needed when turning off.
- do_set_trace_flags(void,Args,How)
- end,
- reply_and_loop(Reply,From,MRef,LoopData);
- {{meta_tracer_call,Args},From,MRef} ->
- if
- LoopData#rt.status==running ->
- case LoopData#rt.meta_tracer of
- MPid when is_pid(MPid) ->
- Reply=do_meta_pattern(MPid,Args),
- reply_and_loop(Reply,From,MRef,LoopData);
- _ ->
- reply_and_loop({error,no_metatracer},From,MRef,LoopData)
- end;
- true ->
- reply_and_loop({error,suspended},From,MRef,LoopData)
- end;
- {clear_all_tp,From,MRef} ->
- do_clear_trace_patterns(),
- reply_and_loop(ok,From,MRef,LoopData);
- {{init_tracing,TracerData},From,MRef} ->
- {NewLoopData,Reply}=
- if
- LoopData#rt.status==running ->
- if
- LoopData#rt.state==tracing ->
- {LoopData,{error,already_initiated}};
- true -> % Otherwise, try to init-tracing!
- case translate_td(TracerData) of
- {ok,LogTD,MetaTD} ->
- do_init_tracing(LoopData,TracerData,LogTD,MetaTD);
- Error ->
- {LoopData,Error}
- end
- end;
- true -> % Can't init tracing if not running.
- {LoopData,{error,suspended}}
- end,
- reply_and_loop(Reply,From,MRef,NewLoopData);
- {stop_tracing,From,MRef} ->
- case LoopData#rt.state of
- tracing -> % Only case we need to do anything.
- reply_and_loop({ok,idle},From,MRef,do_stop_tracing(LoopData));
- idle -> % Already idle!
- reply_and_loop({ok,idle},From,MRef,LoopData);
- new -> % Have actually never traced!
- reply_and_loop({ok,new},From,MRef,LoopData)
- end;
- {{suspend,Reason},From,MRef} ->
- if
- LoopData#rt.status==running ->
- NewLD=do_suspend(LoopData,Reason),
- reply_and_loop(ok,From,MRef,NewLD);
- true -> % No need suspend if not running!
- reply_and_loop(ok,From,MRef,LoopData)
- end;
- {cancel_suspension,From,MRef} ->
- NewLoopData=LoopData#rt{status=running,next_loadcheck=now()},
- send_event(state_change,NewLoopData),
- reply_and_loop(ok,From,MRef,NewLoopData);
- {{clear,Options},From,MRef} ->
- NewLoopData=do_clear(LoopData,Options),
- reply_and_loop({ok,{new,NewLoopData#rt.status}},From,MRef,NewLoopData);
- {flush,From,MRef} ->
- case LoopData#rt.state of
- tracing -> % Can only flush if we are tracing.
- if
- is_port(LoopData#rt.tracer_port) ->
- trace_port_control(LoopData#rt.tracer_port,flush),
- reply_and_loop(ok,From,MRef,LoopData);
- true -> % Not necessary but lets pretend.
- reply_and_loop(ok,From,MRef,LoopData)
- end;
- State ->
- reply_and_loop({error,{not_tracing,State}},From,MRef,LoopData)
- end;
- {list_logs,From,MRef} ->
- TracerData=LoopData#rt.tracerdata, % Current tracerdata.
- if
- TracerData/=undefined -> % There is tracerdata!
- reply_and_loop(do_list_logs(TracerData),From,MRef,LoopData);
- true -> % Have no current tracerdata!
- reply_and_loop({error,no_tracerdata},From,MRef,LoopData)
- end;
- {{list_logs,TracerData},From,MRef} ->
- reply_and_loop(do_list_logs(TracerData),From,MRef,LoopData);
- {{fetch_log,CollectPid},From,MRef} -> % Fetch according to current tracerdata.
- TracerData=LoopData#rt.tracerdata, % Current tracerdata.
- if
- TracerData/=undefined -> % There is tracerdata!
- {Reply,NewLD}=do_fetch_log(LoopData,CollectPid,TracerData),
- reply_and_loop(Reply,From,MRef,NewLD);
- true -> % No tracerdata!
- reply_and_loop({error,no_tracerdata},From,MRef,LoopData)
- end;
- {{fetch_log,CollectPid,Spec},From,MRef} -> % Either list of files or tracerdata.
- {Reply,NewLD}=do_fetch_log(LoopData,CollectPid,Spec),
- reply_and_loop(Reply,From,MRef,NewLD);
- {delete_logs,From,MRef} ->
- if
- LoopData#rt.state==tracing -> % Can't remove then!
- reply_and_loop({error,tracing},From,MRef,LoopData);
- true ->
- TracerData=LoopData#rt.tracerdata,
- reply_and_loop(do_delete_logs(TracerData),From,MRef,LoopData)
- end;
- {{delete_logs,TracerDataOrLogList},From,MRef} ->
- if
- LoopData#rt.state==tracing -> % Can't remove then!
- reply_and_loop({error,tracing},From,MRef,LoopData);
- true ->
- reply_and_loop(do_delete_logs(TracerDataOrLogList),From,MRef,LoopData)
- end;
- {get_node_info,From,MRef} ->
- Reply=collect_node_info(LoopData),
- reply_and_loop(Reply,From,MRef,LoopData);
- {{try_to_adopt,Tag,Condition},From,MRef} ->
- if
- LoopData#rt.ctrl_ref==undefined -> % We have no control component.
- {Reply,NewLoopData}=do_try_to_adopt(Tag,Condition,LoopData,From),
- reply_and_loop(Reply,From,MRef,NewLoopData);
- true -> % We already have a control component.
- reply_and_loop({error,refused},From,MRef,LoopData)
- end;
- {{confirm_connection,_Tag},From,MRef} ->
- if
- LoopData#rt.ctrl==From -> % It must be from this process!
- Reply=collect_node_info(LoopData),
- reply_and_loop(Reply,From,MRef,LoopData);
- true -> % Strange, some one is joking?
- reply_and_loop({error,refused},From,MRef,LoopData)
- end;
- {{change_options,Options},From,MRef} ->
- case do_change_options(Options,LoopData) of
- stop -> % Can't run alone with these options!
- terminate_overload(LoopData),
- From ! {ok,MRef}; % Don't care if From not a proper pid!
- NewLoopData when is_record(NewLoopData,rt) ->
- reply_and_loop(ok,From,MRef,NewLoopData)
- end;
- {get_status,From,MRef} ->
- Reply={ok,{LoopData#rt.state,LoopData#rt.status}},
- reply_and_loop(Reply,From,MRef,LoopData);
- {get_tracerdata,From,MRef} ->
- case LoopData#rt.tracerdata of
- undefined ->
- reply_and_loop({ok,no_tracerdata},From,MRef,LoopData);
- TracerData ->
- reply_and_loop({ok,TracerData},From,MRef,LoopData)
- end;
- {state,From,MRef} -> % For debugging purposes.
- reply_and_loop(LoopData,From,MRef,LoopData);
-
- {'DOWN',CtrlRef,process,_,_} when CtrlRef==LoopData#rt.ctrl_ref ->
- case do_down_message(LoopData) of
- stop -> % inviso_c gone and we must stop!
- terminate_overload(LoopData),
- exit(running_alone);
- {ok,NewLoopData} ->
- loop1(NewLoopData)
- end;
- {'EXIT',Pid,Reason} ->
- case act_on_exit(Pid,Reason,LoopData) of
- exit ->
- terminate_overload(LoopData),
- exit(Reason);
- NewLoopData when is_record(NewLoopData,rt) ->
- loop1(NewLoopData);
- {NewLoopData,NewTimeOut} when is_record(NewLoopData,rt) ->
- loop(NewLoopData,NewTimeOut)
- end;
- Other -> % Check if it concerns overload.
- if
- LoopData#rt.overload/=?NO_LOADCHECK,
- LoopData#rt.status==running,
- LoopData#rt.state==tracing ->
- {NewLD,NewTimeOut}=
- do_check_overload(LoopData,
- {msg,{Other,LoopData#rt.overload_data}}),
- loop(NewLD,NewTimeOut);
- true ->
- NewTimeOut=calc_diff_to_now(now(),LoopData#rt.next_loadcheck),
- loop(LoopData,NewTimeOut)
- end
- after
- Timeout ->
- loop1(LoopData)
- end.
-
-reply_and_loop(Reply,To,MRef,LoopData) when is_pid(To) ->
- To ! {Reply,MRef},
- loop1(LoopData);
-reply_and_loop(_,_,_,LoopData) -> % Used together with incoming casts.
- loop1(LoopData).
-%% -----------------------------------------------------------------------------
-
-
-%% =============================================================================
-%% File transfer process implementation.
-%% =============================================================================
-
-%% Files that are to to be transfered from the runtime component to the control
-%% component are done so by reading them as binaries and sending them with
-%% normal message passing (over distributed Erlang).
-%% Reading the files are done in a process separate to the runtime component,
-%% to both make the code more simple. But also to free up the runtime component.
-%%
-%% This help process must be capable of recognizing the fact that the runtime
-%% component has been suspended, and then of course also discontinue any file
-%% transfere.
-fetch_init(Parent,Files,CollectPid,ChunkSize) ->
- process_flag(trap_exit,true), % We must clean-up.
- process_flag(priority,low), % Lets be careful.
- case fetch_open_file(Files,CollectPid) of
- {ok,FileName,FD,RestFiles} ->
- MRef=erlang:monitor(process,CollectPid),
- fetch_loop(Parent,RestFiles,CollectPid,ChunkSize,FileName,FD,MRef);
- done ->
- fetch_end(CollectPid);
- error ->
- fetch_incomplete(CollectPid)
- end.
-
-fetch_loop(Parent,Files,CollectPid,ChunkSize,FName,FD,MRef) ->
- receive
- {suspend,Parent} -> % The runtime component is suspended.
- file:close(FD), % We must clean-up.
- fetch_incomplete(CollectPid);
- {'DOWN',MRef,process,_,_} -> % The CollectPid terminated!
- file:close(FD); % Close file and terminate.
- {'EXIT',Parent,_Reason} -> % The runtime component terminated.
- file:close(FD),
- fetch_incomplete(CollectPid);
- _ ->
- fetch_loop(Parent,Files,CollectPid,ChunkSize,FName,FD,MRef)
- after
- 0 -> % If non of the above, get to work!
- case file:read(FD,ChunkSize) of
- {ok,Bin} ->
- fetch_send_chunk(CollectPid,Bin),
- case fetch_wait_for_chunk_ack(CollectPid,MRef) of
- ok -> % Collector ready to receive next chunk.
- fetch_loop(Parent,Files,CollectPid,ChunkSize,FName,FD,MRef);
- cancel -> % Send no more files!
- file:close(FD), % Close file, send incomplete, terminate!
- fetch_incomplete(CollectPid);
- 'DOWN' -> % Collector has terminate, stop!
- file:close(FD) % Close file and terminate.
- end;
- eof -> % Ok, go on with the next file.
- file:close(FD),
- fetch_send_eof(CollectPid),
- case fetch_open_file(Files,CollectPid) of
- {ok,NewFName,NewFD,RestFiles} ->
- fetch_loop(Parent,RestFiles,CollectPid,
- ChunkSize,NewFName,NewFD,MRef);
- done ->
- fetch_end(CollectPid);
- error ->
- fetch_incomplete(CollectPid)
- end;
- {error,Reason} -> % Do not continue.
- file:close(FD),
- fetch_send_readerror(CollectPid,FName,Reason),
- fetch_incomplete(CollectPid)
- end
- end.
-%% -----------------------------------------------------------------------------
-
-%% Help function which opens the next file to be transferred. It also communicates
-%% the opening of the file to the collector process.
-%% We know here that it will be a list of three-tuples. But there is no guarantee
-%% that Dir or FileName are proper strings.
-%% Returns {ok,FileName,FileDescriptor,RemainingFiles} or 'done'.
-fetch_open_file([{FType,Dir,FileName}|RestFiles],CollectPid) ->
- case catch file:open(filename:join(Dir,FileName),[read,raw,binary]) of
- {ok,FD} ->
- CollectPid ! {node(),open,{FType,FileName}},
- {ok,FileName,FD,RestFiles};
- {error,_Reason} ->
- CollectPid ! {node(),open_failure,{FType,FileName}},
- error;
- {'EXIT',_Reason} -> % Faulty Dir or FileName.
- CollectPid ! {node(),open_failure,{FType,FileName}},
- error
- end;
-fetch_open_file([],_CollectPid) ->
- done.
-%% -----------------------------------------------------------------------------
-
-%% A group of help functions sending information to the collector process.
-%% Returns nothing significant.
-fetch_send_chunk(CollectPid,Bin) ->
- CollectPid ! {node(),payload,Bin,self()}.
-%% -----------------------------------------------------------------------------
-
-fetch_send_eof(CollectPid) ->
- CollectPid ! {node(),end_of_file}.
-%% -----------------------------------------------------------------------------
-
-fetch_end(CollectPid) ->
- CollectPid ! {node(),end_of_transmission}.
-%% -----------------------------------------------------------------------------
-
-fetch_send_readerror(CollectPid,FName,Reason) ->
- CollectPid ! {node(),{error,{file_read,{Reason,FName}}}}.
-%% -----------------------------------------------------------------------------
-
-fetch_incomplete(CollectPid) ->
- CollectPid ! {node(),incomplete}.
-%% -----------------------------------------------------------------------------
-
-%% Help function waiting for the collector to respond that it is ready to receive
-%% the next chunk. This is in order to exercise flow control protecting the
-%% collector to get swamped if the node where the collector runs is busy.
-fetch_wait_for_chunk_ack(CollectPid,MRef) ->
- receive
- {CollectPid,chunk_ack} ->
- ok;
- {CollectPid,cancel_transmission} -> % Some problem at collector side.
- cancel;
- {'DOWN',MRef,process,_,_} -> % The collector terminated.
- 'DOWN'
- end.
-%% -----------------------------------------------------------------------------
-
-
-%% =============================================================================
-%% First level do-functions, called from the main server loop on incomming
-%% requests.
-%% =============================================================================
-
-%% Function performing the overload check. Returns {NewLoopData,TimeOut}.
-%% Note that this function may also cause a suspend to be carried out if the
-%% loadcheck turns out negative.
-do_check_overload(LD,Data) ->
- case do_check_overload_2(LD#rt.overload,Data) of
- ignore -> % Load check not performed.
- {LD,calc_diff_to_now(now(),LD#rt.next_loadcheck)};
- {ok,Interval} -> % No problem, continue.
- NextLoadCheck=add_to_now(now(),Interval),
- {LD#rt{next_loadcheck=NextLoadCheck},Interval};
- {suspend,Reason} -> % Emergency! suspend, suspend!
- NewLD=do_suspend(LD,Reason),
- {NewLD,infinity}; % No need to do load-checks now!
- {new,NewData,Interval} -> % The overload was restarted or something.
- NextLoadCheck=add_to_now(now(),Interval),
- {LD#rt{overload_data=NewData,next_loadcheck=NextLoadCheck},Interval};
- error -> % Inhibit overload check then.
- {LD#rt{overload=?NO_LOADCHECK},infinity}
- end.
-
-%% Help function performing an overload check. Returns {ok,Interval},
-%% {suspend,Reason}, 'error' ir 'ignore'.
-do_check_overload_2({{Mod,Func},Interval,_,_},Data) ->
- do_check_overload_3(Interval,catch Mod:Func(Data));
-do_check_overload_2({Fun,Interval,_,_},Data) when is_function(Fun) ->
- do_check_overload_3(Interval,catch Fun(Data));
-do_check_overload_2(_,_) -> % Bad loadcheck configuration.
- error. % Stop using load checks then.
-
-do_check_overload_3(Interval,ok) ->
- {ok,Interval};
-do_check_overload_3(Interval,{new,NewData}) ->
- {new,NewData,Interval};
-do_check_overload_3(_Interval,{suspend,Reason}) ->
- {suspend,Reason};
-do_check_overload_3(_Interval,ignore) -> % Loadcheck not triggered.
- ignore;
-do_check_overload_3(_Interval,_) -> % Failure or other return value.
- error. % Stop doing loadchecks from now on.
-%% ------------------------------------------------------------------------------
-
-%% Function setting the trace-pattern according to Args and Flags. Note that
-%% Args can contain regexps which must be expanded here.
-%% Returns a list: [Result], where Result can be: int()|{error,Reason}.
-%% Sometimes an error tuple will represent an entire pattern, sometimes the
-%% pattern will expand to a number of error-tuples.
-do_set_trace_patterns(Args,Flags) ->
- Replies=do_set_trace_patterns_2(Args,Flags,[]),
- lists:reverse(Replies).
-
-do_set_trace_patterns_2([{M,F,Arity,MS}|Rest],Flags,Replies) -> % Option-less.
- do_set_trace_patterns_2([{M,F,Arity,MS,[]}|Rest],Flags,Replies);
-do_set_trace_patterns_2(Mlist = [{M,F,Arity,MS,Opts}|Rest],Flags,Replies) when is_atom(M) ->
- case length(Mlist) rem 10 of
- 0 ->
- timer:sleep(100);
- _ ->
- ok
- end,
- %% sleep 100 ms for every 10:th element in the list to let other
- %% processes run since this is a potentially
- %% heavy operation that might result in an unresponsive Erlang VM for
- %% several seconds otherwise
- case load_module_on_option(M,Opts) of
- true -> % Already present, loaded or no option!
- case catch erlang:trace_pattern({M,F,Arity},MS,Flags) of
- No when is_integer(No) ->
- do_set_trace_patterns_2(Rest,Flags,[No|Replies]);
- {'EXIT',Reason} ->
- do_set_trace_patterns_2(Rest,
- Flags,
- [{error,{bad_trace_args,[{M,F,Arity,MS},Reason]}}|
- Replies])
- end;
- false -> % Module not present, or not found!
- do_set_trace_patterns_2(Rest,Flags,[0|Replies])
- end;
-do_set_trace_patterns_2([{M,F,Arity,MS,Opts}|Rest],Flags,Replies) when is_list(M) ->
- do_set_trace_patterns_2([{{void,M},F,Arity,MS,Opts}|Rest],Flags,Replies);
-do_set_trace_patterns_2([{{Dir,M},F,Arity,MS,Opts}|Rest],Flags,Replies)
- when is_list(Dir),is_list(M) ->
- case check_pattern_parameters('_',F,Arity,MS) of % We don't want to repeat bad params.
- true ->
- case inviso_rt_lib:expand_regexp(Dir,M,Opts) of % Get a list of real modulnames.
- Mods when is_list(Mods) ->
- MoreReplies=
- do_set_trace_patterns_2(lists:map(fun(Mod)->
- {Mod,F,Arity,MS,Opts}
- end,
- Mods),
- Flags,
- Replies),
- do_set_trace_patterns_2(Rest,Flags,MoreReplies);
- {error,Reason} ->
- do_set_trace_patterns_2(Rest,Flags,[{error,Reason}|Replies])
- end;
- false -> % Bad pattern parameters.
- do_set_trace_patterns_2(Rest,
- Flags,
- [{error,{bad_trace_args,{M,F,Arity,MS}}}|Replies])
- end;
-do_set_trace_patterns_2([Arg|Rest],Flags,Replies) ->
- do_set_trace_patterns_2(Rest,Flags,[{error,{bad_trace_args,Arg}}|Replies]);
-do_set_trace_patterns_2([],_Flags,Replies) ->
- Replies.
-%% -----------------------------------------------------------------------------
-
-%% Help function which sets the trace flags for all processes specifed in Args.
-%% Args shall be a list of {ProcessSpecification,ProcessTraceFlags}.
-%% Returns {ok,Answers} where Answers is a list of integer and error descriptions.
-%% Note that a process specification may be a particular pid or a {global,Name}.
-%% In the case the process does not exist we will fake a zero instead of an
-%% error.
-do_set_trace_flags(Tracer,Args,How) ->
- Fun=fun({Proc,Flags}) ->
- case check_traceflag_pidspec(Proc) of
- {ok,Proc2} -> % Reg-names converted.
- case check_flags(Flags) of
- Flags2 when is_list(Flags2) -> % No error!
- case (catch
- case How of
- true ->
- erlang:trace(Proc2,
- true,
- [{tracer,Tracer}|Flags2]);
- false -> % No tracer of turning off.
- erlang:trace(Proc2,
- false,
- Flags2)
- end) of
- N when is_integer(N) ->
- N;
- {'EXIT',Reason} ->
- if
- is_pid(Proc2) ->
- 0; % Proc2 not alive or not at this node!
- true -> % Otherwise, just error!
- {error,
- {bad_trace_args,
- [Reason,Proc2,How,Flags2,Tracer]}}
- end
- end;
- FlagError ->
- FlagError
- end;
- false -> % Skip it.
- 0; % Indicate that zero processes matched.
- {error,Reason} -> % Bad process specification.
- {error,{bad_process,[Reason,Proc]}}
- end;
- (Faulty) ->
- {error,{bad_process,Faulty}}
- end,
- {ok,lists:map(Fun,Args)}.
-%% ------------------------------------------------------------------------------
-
-%% Function calling API:s in the trace information server. Note that we have
-%% given the responsibility to form a correct functionsname and argument list
-%% to the caller.
-%% Returns whatever the called function returns.
-do_meta_pattern(MPid,{FuncName,ArgList}) ->
- case catch apply(inviso_rt_meta,FuncName,[MPid|ArgList]) of
- {'EXIT',_Reason} ->
- {error,{badarg,{FuncName,ArgList}}};
- Result ->
- Result
- end;
-do_meta_pattern(_MPid,BadArgs) ->
- {error,{bad_args,BadArgs}}.
-%% ------------------------------------------------------------------------------
-
-%% Function removing *all* patterns. Beaware that the one for local patterns
-%% causes a walkthrough of all loaded modules.
-do_clear_trace_patterns() ->
- erlang:trace_pattern({'_','_','_'},false,[local]), %% inc. meta, call_count
- erlang:trace_pattern({'_','_','_'},false,[global]).
-%% ------------------------------------------------------------------------------
-
-%% Function that takes TracerData and initializes the tracing. That can be
-%% opening appropriate logfiles, starting meta-tracer. There must be one
-%% clause here for every "type" of logging we want to be able to do.
-%% Returns the Reply to be forwarded to the caller.
-do_init_tracing(LoopData,TD,{HandlerFun,Data},TiTD) when is_function(HandlerFun) ->
- {NewLoopData,Reply}=
- case do_init_metatracing(TiTD,self()) of
- {ok,MetaPid} ->
- {LoopData#rt{handler={HandlerFun,Data},
- tracerdata=TD,
- meta_tracer=MetaPid,
- state=tracing},
- {ok,[{trace_log,ok},{ti_log,ok}]}};
- false -> % No meta tracing requested.
- {LoopData#rt{handler={HandlerFun,Data},
- tracerdata=TD,
- state=tracing},
- {ok,[{trace_log,ok}]}};
- {error,Reason} -> % Problems starting meta tracing.
- {LoopData#rt{handler={HandlerFun,Data},
- tracerdata=TD,
- state=tracing},
- {ok,[{trace_log,ok},{ti_log,{error,Reason}}]}}
- end,
- send_event(state_change,NewLoopData), % Send to subscribing processes.
- {NewLoopData,Reply};
-do_init_tracing(LoopData,TD,{Type,Parameters},TiTD) when Type==ip;Type==file ->
- case check_traceport_parameters(Type,Parameters) of
- ok ->
- case catch trace_port(Type,Parameters) of
- Fun when is_function(Fun) ->
- case catch Fun() of
- Port when is_port(Port) -> % Ok, our trace-port is open.
- {NewLoopData,Reply}=
- case do_init_metatracing(TiTD,Port) of
- {ok,MetaPid} ->
- {LoopData#rt{tracer_port=Port,
- tracerdata=TD,
- meta_tracer=MetaPid,
- state=tracing},
- {ok,[{trace_log,ok},{ti_log,ok}]}};
- false -> % No meta tracing requested.
- {LoopData#rt{tracer_port=Port,
- tracerdata=TD,
- state=tracing},
- {ok,[{trace_log,ok}]}};
- {error,Reason} -> % Problems starting meta tracing.
- {LoopData#rt{tracer_port=Port,
- tracerdata=TD,
- state=tracing},
- {ok,[{trace_log,ok},{ti_log,{error,Reason}}]}}
- end,
- send_event(state_change,NewLoopData),
- {NewLoopData,Reply};
- {'EXIT',Reason} ->
- {LoopData,{error,{bad_port_fun,[Parameters,Reason]}}}
- end;
- {'EXIT',Reason} ->
- {LoopData,{error,{bad_port_args,[Parameters,Reason]}}}
- end;
- {error,Reason} -> % Bad traceport parameters.
- {LoopData,{error,Reason}}
- end.
-
-%% Help function that starts the meta-tracing. Note that the runtime component
-%% will becom linked to it.
-%% Currently the meta tracer handles two types, 'file' and 'relay'.
-%% Note that Tracer tells the meta tracer where regular trace messages shall be
-%% sent. This is because the meta tracer is capable of appending a {tracer,Tracer}
-%% action term to meta match specs.
-do_init_metatracing(LogSpec={_Type,_Arg},Tracer) ->
- case inviso_rt_meta:start(LogSpec,Tracer) of
- {ok,MetaPid} ->
- {ok,MetaPid};
- {error,Reason} ->
- {error,Reason}
- end;
-do_init_metatracing({Type,Arg,{InitPublLDmfa,RemovePublLDmf,CleanPublLDmf}},Tracer)->
- case inviso_rt_meta:start({Type,Arg},Tracer,InitPublLDmfa,RemovePublLDmf,CleanPublLDmf) of
- {ok,MetaPid} ->
- {ok,MetaPid};
- {error,Reason} ->
- {error,Reason}
- end;
-do_init_metatracing(void,_) -> % Means no meta tracer.
- false.
-%% -----------------------------------------------------------------------------
-
-%% Function that stops all tracing and closes all open files. This function
-%% can't fail :-) It tries as hard as it can.
-%% This function also kills the autostarter process if one exists. Otherwise it
-%% will not be possible from a control component to end an ongoing autostarted
-%% tracing.
-%% Returns a new loopdata structure since stopping tracing involves updating it.
-do_stop_tracing(LoopData) ->
- do_stop_tracing_kill_autostarter(LoopData#rt.auto_starter),
- do_clear_trace_flags(), % Do not generate any more traces.
- NewLoopData1=do_stop_tracing_tracelog(LoopData),
- NewLoopData2=do_stop_tracing_metatracing(NewLoopData1),
- NewLoopData3=NewLoopData2#rt{state=idle,auto_starter=undefined},
- send_event(state_change,NewLoopData3),
- NewLoopData3.
-
-do_stop_tracing_tracelog(LoopData=#rt{tracer_port=Port}) when is_port(Port) ->
- trace_port_control(Port,flush), % Write buffered trace messages.
- catch port_close(Port),
- LoopData#rt{tracer_port=undefined};
-do_stop_tracing_tracelog(LoopData) ->
- LoopData#rt{handler=undefined}.
-
-do_stop_tracing_metatracing(LoopData=#rt{meta_tracer=MPid}) when is_pid(MPid) ->
- inviso_rt_meta:stop(MPid),
- LoopData#rt{meta_tracer=undefined};
-do_stop_tracing_metatracing(LoopData) -> % No meta tracer running!
- LoopData.
-
-%% Help function killing the autostarter, if one is active.
-do_stop_tracing_kill_autostarter(P) when is_pid(P) ->
- exit(P,stop_tracing);
-do_stop_tracing_kill_autostarter(_) -> % No autostarter, do nothing.
- true.
-%% -----------------------------------------------------------------------------
-
-%% Help function implementing suspending the runtime component.
-%% Returns a new loopdata structure.
-do_suspend(LD,Reason) ->
- do_clear_trace_flags(), % If no process flags, no output!
- do_suspend_metatracer(LD#rt.meta_tracer),
- do_suspend_fetchers(LD#rt.fetchers),
- do_stop_tracing_kill_autostarter(LD#rt.auto_starter),
- NewLD=LD#rt{fetchers=[],status={suspended,Reason},auto_starter=undefined},
- send_event(state_change,NewLD), % Notify subscribers.
- NewLD.
-
-do_suspend_metatracer(MetaTracer) when is_pid(MetaTracer) ->
- inviso_rt_meta:suspend(MetaTracer); % This makes it suspended.
-do_suspend_metatracer(_) ->
- true.
-
-do_suspend_fetchers([FetcherPid|Rest]) ->
- FetcherPid ! {suspend,self()}, % This makes it terminate.
- do_suspend_fetchers(Rest);
-do_suspend_fetchers([]) ->
- true.
-%% ------------------------------------------------------------------------------
-
-%% Function that stops all tracing, removes all trace-patterns and removes all
-%% logfiles. The idea is to return the runtime component to the 'new' state.
-do_clear(LoopData,Opts) when is_list(Opts) ->
- NewLoopData=do_stop_tracing(LoopData), % First stop tracing, if tracing.
- case lists:member(keep_trace_patterns,Opts) of
- false ->
- do_clear_trace_patterns();
- _ ->
- true
- end,
- case lists:member(keep_log_files,Opts) of
- false ->
- if
- NewLoopData#rt.tracerdata/=undefined ->
- do_delete_logs(NewLoopData#rt.tracerdata);
- true -> % If no tracerdata, nothing to remove!
- true % Do nothing then.
- end;
- _ ->
- true
- end,
- NewLoopData#rt{state=new,tracerdata=undefined};
-do_clear(LoopData,_Opts) -> % Faulty Opts.
- do_clear(LoopData,[]). % Then just ignore the options.
-%% -----------------------------------------------------------------------------
-
-%% Function which takes a tracerdata, either our own or a "suggested"
-%% and tries to find the corresponding files. Note that the return value only
-%% contains "types" of logs that the tracerdata is pointing out. Hence
-%% is there no ti-log, no one will be mentioned in the return value.
-do_list_logs(TracerData) -> % Handles both list and tuple.
- case translate_td(TracerData) of
- {ok,LogTD,TiTD} ->
- {TraceDir,TraceLogs}=list_logs_tracelog(LogTD),
- {TiDir,TiLogs}=list_logs_tilog(TiTD),
- case {TraceLogs,TiLogs} of
- {no_log,no_log} -> % Tracerdata not generating logs!
- {ok,no_log};
- {_,no_log} -> % No ti logs.
- {ok,[{trace_log,TraceDir,TraceLogs}]};
- {no_log,_} -> % Only ti-logs, unusual!
- {ok,[{ti_log,TiDir,TiLogs}]};
- _ -> % Both trace and ti logs.
- {ok,[{trace_log,TraceDir,TraceLogs},{ti_log,TiDir,TiLogs}]}
- end;
- {error,Reason} ->
- {error,Reason}
- end.
-%% -----------------------------------------------------------------------------
-
-%% Help function implementing fetching logfiles using distributed Erlang.
-%% This function works for both situations, a list of specific files are
-%% requested, or a tracerdata is specified.
-%% Returns {Reply,NewLoopData}.
-do_fetch_log(LD,CollectPid,What) ->
- if
- LD#rt.state/=tracing ->
- case is_list_of_files_or_tracerdata(What) of
- files ->
- FetcherPid=do_fetch_log_listoffiles(CollectPid,What),
- {{ok,FetcherPid},add_fetcher_ld(FetcherPid,LD)};
- tracerdata ->
- case do_fetch_log_tracerdata(CollectPid,What) of
- {Reply,FetcherPid} when is_pid(FetcherPid) ->
- {Reply,add_fetcher_ld(FetcherPid,LD)};
- {Reply,_} -> % No fetch process was started.
- {Reply,LD}
- end;
- false -> % It is an empty list!
- {{complete,no_log},LD};
- error -> % Incorrect parameter.
- {{error,badarg},LD}
- end;
- true -> % No transfere during tracing.
- {{error,tracing},LD}
- end.
-
-%% Function taking tracerdata to find out what files to send over to the RemotePid.
-%% Note that we will not go back to the loop function from here but rather call
-%% the fetch_loop instead, prepresenting the fetch-log state. Unless we encounter
-%% a problem.
-do_fetch_log_tracerdata(CollectPid,TracerData) ->
- case do_list_logs(TracerData) of
- {ok,no_log} ->
- {{complete,no_log},void};
- {ok,Logs} -> % Ok, some trace_log and ti_log.
- FetcherPid=do_fetch_log_listoffiles(CollectPid,Logs),
- {{ok,FetcherPid},FetcherPid};
- {error,Reason} -> % Problem with tracerdata!
- {{error,Reason},void}
- end.
-
-do_fetch_log_listoffiles(CollectPid,FileSpec) ->
- ExpandedFileSpec=do_fetch_log_expand_filespec(FileSpec),
-%% !!! try out different ChunkSizes
-% ChunkSize = 60,
-% ChunkSize = 7*1024,
- ChunkSize=1024,
- _Fetcher=spawn_link(?MODULE,
- fetch_init,
- [self(),ExpandedFileSpec,CollectPid,ChunkSize]).
-
-%% Help function which expands the list of logs to have tags in front of every
-%% file, as required by the fetch_loop.
-do_fetch_log_expand_filespec(Logs) ->
- TraceLogs=
- case lists:keysearch(trace_log,1,Logs) of
- {value,{_,Dir1,Logs1}} -> % There is a list of trace-logs.
- lists:map(fun(File)->{trace_log,Dir1,File} end,Logs1);
- false -> % No trace-logs!
- []
- end,
- TiLogs=
- case lists:keysearch(ti_log,1,Logs) of
- {value,{_,Dir2,Logs2}} ->
- lists:map(fun(File)->{ti_log,Dir2,File} end,Logs2);
- false ->
- []
- end,
- TiLogs++TraceLogs.
-
-%% ------------------------------------------------------------------------------
-
-%% Function that removes all logfiles associated with a certain tracerdata.
-do_delete_logs(TracerDataOrLogList) ->
- case is_list_of_files_or_tracerdata(TracerDataOrLogList) of
- tracerdata ->
- case translate_td(TracerDataOrLogList) of
- {ok,LogTD,TiTD} ->
- case {list_logs_tracelog(LogTD),list_logs_tilog(TiTD)} of
- {{_,no_log},{_,no_log}} -> % No logs nowhere!
- {ok,no_log};
- {{LogDir,LogFiles},{_,no_log}} -> % No ti.
- {ok,[{trace_log,delete_files(LogDir,LogFiles)}]};
- {{_,no_log},{TiDir,TiFiles}} ->
- {ok,[{ti_log,delete_files(TiDir,TiFiles)}]};
- {{LogDir,LogFiles},{TiDir,TiFiles}} ->
- {ok,[{trace_log,delete_files(LogDir,LogFiles)},
- {ti_log,delete_files(TiDir,TiFiles)}]}
- end;
- {error,Reason} ->
- {error,Reason}
- end;
- files -> % It is [{trace_log,Dir,Files},..
- if
- is_list(hd(TracerDataOrLogList)) -> % Just a list of files.
- {ok,delete_files(".",TracerDataOrLogList)};
- is_tuple(hd(TracerDataOrLogList)) -> % A "modern" logspec.
- case {lists:keysearch(trace_log,1,TracerDataOrLogList),
- lists:keysearch(ti_log,1,TracerDataOrLogList)} of
- {false,false} -> % Hmm, no logs specified!
- {ok,[]}; % Easy response!
- {{value,{_,LogDir,LogFiles}},false} ->
- {ok,[{trace_log,delete_files(LogDir,LogFiles)}]};
- {false,{value,{_,TiDir,TiFiles}}} ->
- {ok,[{ti_log,delete_files(TiDir,TiFiles)}]};
- {{value,{_,LogDir,LogFiles}},{value,{_,TiDir,TiFiles}}} ->
- {ok,[{trace_log,delete_files(LogDir,LogFiles)},
- {ti_log,delete_files(TiDir,TiFiles)}]}
- end
- end;
- false -> % Can't tell which!
- {ok,[]};
- error ->
- {error,{badarg,TracerDataOrLogList}}
- end.
-%% -----------------------------------------------------------------------------
-
-%% Function handling the request when a control component wishing to take
-%% control over this already existing control component. It does not matter
-%% what state it is in. It can very well already be tracing.
-%% Returns {Reply,NewLoopData}.
-%% Where the Reply tells the control component wether it took control of it
-%% or not. {node_info,node(),self(),Vsn,State,Status,{tag,Tag}} means that we
-%% can be adopted (and more precisely considers ourselves being adopted now).
-do_try_to_adopt(Tag,if_ref,LoopData=#rt{tag=Tag},_Ctrl) ->
- {{error,{wrong_reference,LoopData#rt.tag}},LoopData};
-do_try_to_adopt(NewTag,_Condition,LoopData,CtrlPid) ->
- case LoopData#rt.timer_ref of % Do we have a running-alone timer?
- undefined -> % No we don't.
- true;
- TimerRef ->
- timer:cancel(TimerRef)
- end,
- CtrlRef=erlang:monitor(process,CtrlPid), % Lets monitor our new "master"!
- {DepVal,_}=LoopData#rt.dependency,
- {node_info,Node,Pid,VSN,State,Status,Tag}=collect_node_info(LoopData),
- NewLoopData=
- LoopData#rt{dependency={DepVal,node(CtrlPid)},
- ctrl=CtrlPid,
- ctrl_ref=CtrlRef, % Monitoring our new master.
- tag=NewTag, % Use this tag from now on.
- timer_ref=undefined},
- {{node_info,Node,Pid,VSN,State,Status,{tag,Tag}},NewLoopData}.
-%% -----------------------------------------------------------------------------
-
-%% Function changing parameters accoring to a new options list. Note that we
-%% can not change control component if the one we have is still working.
-%% We can however of course change how this runtime component will react to
-%% a running alone scenario.
-%% Returns 'stop' or NewLoopData.
-do_change_options(Options,LoopData) ->
- NewLoopData=read_option_list(Options,LoopData),
- if
- NewLoopData/=LoopData -> % Some options changed.
- case do_change_options_ctrl(LoopData,NewLoopData) of
- stop ->
- stop;
- {ok,NewLoopData2} ->
- NewLoopData3=do_change_options_overload(LoopData,NewLoopData2),
- NewLoopData3#rt{next_loadcheck=now()} % Force a load check next.
- end;
- true ->
- LoopData
- end.
-
-%% Help function which sets up the new dependencies. Note that we only do that
-%% if do not have a working control component.
-%% Returns {ok,NewLoopData} or 'stop'.
-do_change_options_ctrl(OldLD,NewLD) ->
- if
- OldLD#rt.timer_ref/=undefined -> % No control and waiting to terminate.
- timer:cancel(OldLD#rt.timer_ref),
- do_down_message(NewLD#rt{timer_ref=undefined});
- OldLD#rt.ctrl==undefiend -> % No control component.
- do_down_message(NewLD);
- true -> % We have a working control component!
- {ok,NewLD}
- end.
-
-do_change_options_overload(OldLD,NewLD) ->
- if
- OldLD#rt.overload/=NewLD#rt.overload ->
- terminate_overload(OldLD),
- NewOverloadData=initialize_overload(NewLD),
- NewLD#rt{overload_data=NewOverloadData};
- true -> % No changes done.
- NewLD
- end.
-%% -----------------------------------------------------------------------------
-
-%% Help function handling an incoming DOWN message from our control component.
-%% If the runtime component is not allowed to run without a control component, it
-%% simply terminates which closes the trace-port and process trace flags are
-%% therefore automatically removed.
-%% Returns 'stop' or a {ok,NewLoopData} structure.
-do_down_message(LoopData) ->
- case LoopData#rt.dependency of
- {0,_} -> % Not allowed to run without controller.
- stop;
- {infinity,_} -> % Don't care. Just remove the controller.
- {ok,LoopData#rt{ctrl=undefined,ctrl_ref=undefined}};
- {TimeOut,_} -> % Allowed to run TimeOut ms alone.
- {ok,TimerRef}=timer:exit_after(TimeOut,self(),running_alone),
- {ok,LoopData#rt{timer_ref=TimerRef,ctrl=undefined,ctrl_ref=undefined}}
- end.
-%% -----------------------------------------------------------------------------
-
-%% Function handling incomming exit signals. We can expect exit signals from the
-%% following: Our parent supervisor (runtime_tools_sup), a meta-tracer process,
-%% a logfile fetcher process, or the auto_starter.
-%% A trace-port may also generate an exit signal.
-%% In addition it is possible that an overload mechanism generates exit-signals.
-%% We can also get the running_alone exit signal from our self. This is the
-%% situation if our control component has terminated and this runtime component
-%% is not allowed to exist on its own for ever.
-%% Also note that after we have stopped tracing, for any reason, it is not
-%% impossible that we receive the EXIT signals from still working parts that
-%% we are now shuting down. This is no problem, the code will mearly update
-%% the loopdata structure once again.
-%% Returns 'exit' indicating that the runtime component shall terminate now,
-%% {NewLoopData,NewTimeOut} if the exit-signal resulted in an overload check, or
-%% a new loopdata structure shall we ignore the exit, or it simply resulted in
-%% a state-change.
-act_on_exit(Parent,_Reason,#rt{parent=Parent}) ->
- exit;
-act_on_exit(_Pid,running_alone,_LoopData) ->
- exit;
-act_on_exit(MetaTracer,_Reason,LoopData=#rt{meta_tracer=MetaTracer}) ->
- LoopData#rt{meta_tracer=undefined}; % It does not exit anylonger.
-act_on_exit(Port,Reason,LoopData=#rt{tracer_port=Port}) ->
- send_event({port_down,node(),Reason},LoopData),
- _NewLoopData=do_stop_tracing(LoopData);
-act_on_exit(AutoStarter,_Reason,LoopData=#rt{auto_starter=AutoStarter}) ->
- LoopData#rt{auto_starter=undefined}; % The autostarter has terminated.
-act_on_exit(Pid,Reason,LoopData) ->
- case remove_fetcher_ld(Pid,LoopData) of
- {true,NewLoopData} -> % Yes it really was a fetcher.
- NewLoopData;
- false -> % No it was not a fetcher.
- act_on_exit_overload(Pid,Reason,LoopData)
- end.
-
-%% Help function checking if this exit has anything to do with an overload
-%% mechanism. Note that here we run the overload mechanism regardless of
-%% if we are tracing or not. This because an exit signal from the overload
-%% must most likely always be handled.
-act_on_exit_overload(Pid,Reason,LoopData) ->
- if
- LoopData#rt.overload/=?NO_LOADCHECK ->
- {_NewLD,_NewTimeOut}=
- do_check_overload(LoopData,
- {'EXIT',{Pid,Reason,LoopData#rt.overload_data}});
- true -> % Overload not in use.
- LoopData
- end.
-%% -----------------------------------------------------------------------------
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-
-%% ==============================================================================
-%% Various help functions.
-%% ==============================================================================
-
-%% Help function which calculates a new now-tuple by adding Interval milliseconds
-%% to the first argument. Note that Interval may be 'infinity' too.
-%% Returns a new now-tuple or "bigvalue" which is greater than any now-tuple.
-add_to_now({MegSec,Sec,MicroSec},Interval) when is_integer(Interval) ->
- NewSec=Sec+(Interval div 1000),
- if
- NewSec>=1000000 ->
- {MegSec+1,NewSec-1000000,MicroSec};
- true ->
- {MegSec,NewSec,MicroSec}
- end;
-add_to_now(_,infinity) ->
- "bigvalue".
-%% ------------------------------------------------------------------------------
-
-%% Help function calculating the difference in milliseconds between its first
-%% and second argument. This is useful when calculating an after timeout value
-%% from current now() and next_loadcheck value.
-calc_diff_to_now(T1={_,_,_},T2={_,_,_}) ->
- TimeOut1=timer:now_diff(T2,T1), % The difference in microseconds.
- if
- TimeOut1<0 ->
- 0;
- true -> % Make milliseconds out of it.
- TimeOut1 div 1000
- end;
-calc_diff_to_now(_T1,_) -> % Next loadcheck is not activated.
- infinity. % The the after timeout is infinity.
-%% ------------------------------------------------------------------------------
-
-
-%% Help function returning information about this runtime component.
-collect_node_info(#rt{vsn=VSN,state=State,status=Status,tag=Tag}) ->
- {node_info,node(),self(),VSN,State,Status,Tag}.
-%% ------------------------------------------------------------------------------
-
-%% Help function sending information to the control component that state/status
-%% change has occurred. Returns nothing significant.
-send_event(state_change,LoopData=#rt{ctrl=CtrlPid}) when is_pid(CtrlPid) ->
- Event={trace_event,{state_change,node(),{LoopData#rt.state,LoopData#rt.status}}},
- CtrlPid ! Event;
-send_event(Event,#rt{ctrl=CtrlPid}) when is_pid(CtrlPid) ->
- CtrlPid ! {event,Event};
-send_event(_,_) -> % We have no control to send to!
- true. % Maybe tracing alone after autostart.
-%% ------------------------------------------------------------------------------
-
-%% Help function initializing the overload protection mechanism. This may be
-%% necessary if it is a port program or similar. Returns {ok,Data} or 'void'.
-%% The datastructure vill be given to LoadMF as argument whenever loadchecks
-%% are done.
-initialize_overload(#rt{overload={_MF,_Interval,{M,F,Args},_RemoveMFA}}) ->
- case catch apply(M,F,Args) of
- {ok,Data} ->
- Data;
- _ -> % 'EXIT' or other faulty returnvalue.
- void
- end;
-initialize_overload(_) ->
- void.
-%% ------------------------------------------------------------------------------
-
-%% Help function which terminates an overload protection mechanism.
-%% Returns nothing significant.
-terminate_overload(#rt{overload={_MF,_Interval,_InitMFA,{M,F,Args}},
- overload_data=Data}) ->
- catch apply(M,F,[Data|Args]), % Interested in the side-effect.
- true;
-terminate_overload(_) ->
- true.
-%% ------------------------------------------------------------------------------
-
-
-%% Help function which checks that a process specified for trace flags is correct.
-%% Either the built-in "aliases" for groups of processes, a pid, a locally registered
-%% name. This function also works for globally registered names. It must then
-%% first be established that the process is local for this node before setting any
-%% process flags.
-%% Returns {ok,PidSpec}, 'false' or {error,Reason}.
-check_traceflag_pidspec(all) -> {ok,all};
-check_traceflag_pidspec(new) -> {ok,new};
-check_traceflag_pidspec(existing) -> {ok,existing};
-check_traceflag_pidspec(Name) when is_atom(Name) ->
- check_traceflag_pidspec({local,Name});
-check_traceflag_pidspec({local,A}) when is_atom(A) ->
- case whereis(A) of
- undefined -> % Then it is considered faulty.
- {error,{nonexistent_name,A}};
- Pid when is_pid(Pid) ->
- {ok,Pid}
- end;
-check_traceflag_pidspec({global,Name}) when is_atom(Name) ->
- case global:whereis_name(Name) of
- undefined -> % Then the name does not exist at all.
- {error,{nonexistent_name,{global,Name}}};
- Pid when is_pid(Pid) -> % Ok, but must check that it is here.
- if
- node()==node(Pid) ->
- {ok,Pid};
- true -> % Pid is not at this node.
- false % Not an error but cant be used.
- end
- end;
-check_traceflag_pidspec(Pid) when is_pid(Pid) ->
- {ok,Pid};
-check_traceflag_pidspec(Proc) ->
- {error,{faulty,Proc}}.
-%% ------------------------------------------------------------------------------
-
-%% Help function removing all trace flags from all processes. Useful in connection
-%% with suspend. Returns nothing significant.
-do_clear_trace_flags() ->
- erlang:trace(all, false, [all]).
-%% ------------------------------------------------------------------------------
-
-%% Help function which checks that only valid process trace flags are mentioned.
-%% In order to create better fault reports.
-%% Returns a list of the approved flags, or {error,Reason}.
-check_flags(Flags) ->
- check_flags_2(Flags,Flags).
-
-check_flags_2([send|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2(['receive'|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([call|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([return_to|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([procs|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([garbage_collection|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([running|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([set_on_spawn|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([set_on_first_spawn|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([set_on_link|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([timestamp|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([arity|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([silent|Rest],Flags) -> check_flags_2(Rest,Flags);
-check_flags_2([],Flags) -> Flags;
-check_flags_2([Faulty|_],_Flags) -> {error,{bad_flag,Faulty}}.
-%% ------------------------------------------------------------------------------
-
-%% Help function which checks parameters to erlang:trace_pattern. The purpose of
-%% the function is to avoid to get multiple error return values in the return
-%% list for a pattern used together with a regexp expanded module name.
-check_pattern_parameters(Mod,Func,Arity,MS) ->
- MSresult = check_MS(MS),
- MFAresult = check_MFA(Mod,Func,Arity),
- MFAresult and MSresult.
-
-check_MS(MS) when is_list(MS) -> true;
-check_MS(true) -> true;
-check_MS(false) -> true.
-
-check_MFA('_','_','_') -> true;
-check_MFA(Mod,'_','_') when is_atom(Mod) -> true;
-check_MFA(Mod,'_',A) when is_atom(Mod), is_integer(A) -> false;
-check_MFA(Mod,F,'_') when is_atom(Mod), is_atom(F) -> true;
-check_MFA(Mod,F,A) when is_atom(Mod), is_atom(F), is_integer(A) -> true.
-
-%% -----------------------------------------------------------------------------
-
-%% Help function finding out if Mod is loaded, and if not, if it can successfully
-%% be loaded. The Opts list can prevent modules from being loaded.
-%% Returns 'true' or 'false'.
-load_module_on_option(Mod,Opts) when is_list(Opts) ->
- case lists:member(no_loadcheck,Opts) of
- true -> % Then just skip this, return true.
- true;
- false ->
- case erlang:module_loaded(Mod) of
- true ->
- true; % It is loaded, do no more.
- false ->
- case lists:member(only_loaded,Opts) of
- true -> % Then, make no attempts to load.
- false;
- false -> % Try to load!
- case code:ensure_loaded(Mod) of
- {module,_Mod} -> % Successfully loaded!
- true;
- {error,_Reason} ->
- false
- end
- end
- end
- end;
-load_module_on_option(Mod,_Opts) -> % Most likely Opts not a list!
- load_module_on_option(Mod,[]). % Call without options.
-%% -----------------------------------------------------------------------------
-
-%% Help function taking a tuplelist of options turning them into a loopdata
-%% structure. Returns the loopdata structure with the new values changed.
-read_option_list([],LD) -> % Done, return loopdata.
- LD;
-read_option_list([{dependency,{Value,Node}}|Rest],LD) ->
- read_option_list(Rest,LD#rt{dependency={Value,Node}});
-read_option_list([{dependency,Value}|Rest],LD) when is_integer(Value);Value==infinity ->
- read_option_list(Rest,LD#rt{dependency={Value,node()}});
-read_option_list([overload|Rest],LD) -> % So that we can remove loadcheck.
- read_option_list(Rest,LD#rt{overload=?NO_LOADCHECK});
-read_option_list([{overload,{MF,Interval}}|Rest],LD)
- when is_integer(Interval);Interval==infinity ->
- read_option_list(Rest,LD#rt{overload={MF,Interval,void,void}});
-read_option_list([{overload,{MF,Interval,InitMFA,RemoveMFA}}|Rest],LD)
- when is_integer(Interval);Interval==infinity ->
- read_option_list(Rest,LD#rt{overload={MF,Interval,InitMFA,RemoveMFA}});
-read_option_list([{overload,Interval}|Rest],LD)
- when is_integer(Interval);Interval==infinity ->
- read_option_list(Rest,LD#rt{overload={fun ?DEFAULT_OVERLOAD_FUNC/1,
- Interval,
- void,
- void}});
-read_option_list([_|Rest],LD) -> % Unknown option.
- read_option_list(Rest,LD).
-%% -----------------------------------------------------------------------------
-
-%% Help function which returns the version number for the runtime_tools
-%% application. Since it is called from within the runtime_tools application
-%% we can be "sure" that it really exists.
-get_application_vsn() ->
- {value,{_,_,VSN}}=lists:keysearch(runtime_tools,1,application:loaded_applications()),
- VSN.
-%% -----------------------------------------------------------------------------
-
-%% Help function that examines an argument to determine if it is a list of files
-%% or tracerdata. This since they are both complex structures, looking alike.
-%% Returns 'tracerdata', 'files', 'false' or 'error'. Error is returned if it
-%% can not be decided which it is.
-is_list_of_files_or_tracerdata(What) ->
- case inviso_rt_lib:is_tracerdata(What) of
- true ->
- tracerdata;
- false ->
- if
- What==[] ->
- false;
- is_list(What),is_list(hd(What)) ->
- files;
- is_list(What) ->
- case lists:keysearch(trace_log,1,What) of
- {value,_} ->
- files;
- false ->
- case lists:keysearch(ti_log,1,What) of
- {value,_} ->
- files;
- false ->
- error % Neither tracerdata nor list of files.
- end
- end;
- true ->
- error
- end
- end.
-%% ------------------------------------------------------------------------------
-
-%% Help function which removes all files in the ListOfFiles, assuming they
-%% are located in Dir.
-%% Returns a list of [{ok,FileName},...{error,Reason},...]
-delete_files(Dir,ListOfFiles) ->
- delete_files_2(Dir,ListOfFiles, []).
-
-delete_files_2(Dir,[File|Tail],Reply) when is_list(Dir),is_list(File) ->
- case catch file:delete(filename:join(Dir,File)) of
- ok ->
- delete_files_2(Dir,Tail,[{ok,File}|Reply]);
- {error,Posix} ->
- delete_files_2(Dir,Tail,[{error,{Posix,File}}|Reply]);
- {'EXIT',_Reason} -> % Probably not proper string.
- delete_files_2(Dir,Tail,[{error,{badarg,[Dir,File]}}|Reply])
- end;
-delete_files_2(Dir,[Faulty|Tail],Reply) ->
- delete_files_2(Dir,Tail,[{error,{badarg,[Dir,Faulty]}}|Reply]);
-delete_files_2(_,[],Reply) ->
- Reply.
-%% -----------------------------------------------------------------------------
-
-%% Help function which lists all trace logs belonging to this tracerdata.
-%% Note that this function operates on internal LogTD structures.
-list_logs_tracelog({file,FileName}) when is_list(FileName) ->
- case file:read_file_info(FileName) of
- {ok,_} -> % The file exists.
- {filename:dirname(FileName),[filename:basename(FileName)]};
- _ -> % The file does not exist
- {filename:dirname(FileName),[]}
- end;
-list_logs_tracelog({file,Wrap}) when is_tuple(Wrap),element(2,Wrap)==wrap ->
- case {element(1,Wrap),element(3,Wrap)} of
- {FileName,Tail} when is_list(FileName),is_list(Tail) ->
- case catch {filename:dirname(FileName),list_wrapset(FileName,Tail)} of
- {'EXIT',_Reason} -> % Garbage in either lists.
- {"",no_log}; % Interpret as no log for tracerdata.
- Tuple ->
- Tuple
- end;
- _ ->
- {"",no_log}
- end;
-list_logs_tracelog(void) -> % Trace log not used.
- {"",no_log};
-list_logs_tracelog(_) -> % Some fun or similar.
- {"",no_log}. % Then there are no files to report.
-%% -----------------------------------------------------------------------------
-
-%% Help function which lists all ti-files belonging to this tracerdata.
-%% Note that this function operates on the internal TiTD structure.
-list_logs_tilog(TiTD)
- when tuple_size(TiTD)>=2,element(1,TiTD)==file,is_list(element(2,TiTD)) ->
- FileName=element(2,TiTD),
- case file:read_file_info(FileName) of
- {ok,_} -> % Yes the file exists.
- {filename:dirname(FileName),[filename:basename(FileName)]};
- _ ->
- {filename:dirname(FileName),[]}
- end;
-list_logs_tilog(void) -> % Internal representation for
- {"",no_log}; % ti-file not in use.
-list_logs_tilog(_) ->
- {"",no_log}.
-%% -----------------------------------------------------------------------------
-
-%% Help function which lists all files belonging to the wrap-set specified by
-%% Prefix and Suffix. Note that there can be a directory in Prefix as well.
-%% Will fail if either of Prefix or Suffix are not proper strings.
-%% Returns a list of files, without dirname.
-list_wrapset(Prefix,Suffix) ->
- Name=filename:basename(Prefix),
- Dirname=filename:dirname(Prefix),
- case file:list_dir(Dirname) of
- {ok,Files} ->
- RegExp="^"++list_wrapset_escapes(Name)++"[0-9]+"++
- list_wrapset_escapes(Suffix)++"$",
- list_wrapset_2(Files,RegExp);
- {error,_Reason} -> % Translate this to no files!
- []
- end.
-
-list_wrapset_2([File|Rest],RegExp) ->
- Length=length(File),
- case re:run(File,RegExp) of
- {match,[{0,Length}]} -> % This is a member of the set.
- [File|list_wrapset_2(Rest,RegExp)];
- _ ->
- list_wrapset_2(Rest,RegExp)
- end;
-list_wrapset_2([],_) ->
- [].
-
-%% Help function which inserts escape characters infront of characters which
-%% will otherwise be missinterpreted by the regexp function as meta rather than
-%% just the character itself.
-list_wrapset_escapes([$.|Rest]) ->
- [$\\,$.|list_wrapset_escapes(Rest)];
-list_wrapset_escapes([Char|Rest]) ->
- [Char|list_wrapset_escapes(Rest)];
-list_wrapset_escapes([]) ->
- [].
-%% -----------------------------------------------------------------------------
-
-
-
-
-
-
-%% ==============================================================================
-%% Handler functions for implementing simple trace-message handlers.
-%% ==============================================================================
-%%
-%% A handler must be a function taking two arguments. The first is the trace-
-%% message. The second is datastructure used by the handler. The handler shall
-%% returns (possibly) new datastructure.
-
-%% ------------------------------------------------------------------------------
-%% Function implementing a relayer. This function is used to creat a fun handler
-%% if the relay option is used in tracer-data.
-%% ------------------------------------------------------------------------------
-relay_handler(Msg,Tracer) ->
- Tracer ! Msg,
- Tracer.
-
-%% ------------------------------------------------------------------------------
-%% Function implementing a default terminal io handler.
-%% ------------------------------------------------------------------------------
-
-dhandler(end_of_trace, Out) ->
- Out;
-dhandler(Trace, Out) when element(1, Trace) == trace,
- tuple_size(Trace) >= 3 ->
- dhandler1(Trace, tuple_size(Trace), Out);
-dhandler(Trace, Out) when element(1, Trace) == trace_ts,
- tuple_size(Trace) >= 4 ->
- dhandler1(Trace, tuple_size(Trace)-1, Out);
-dhandler(Trace, Out) when element(1, Trace) == drop,
- tuple_size(Trace) == 2 ->
- io:format(Out, "*** Dropped ~p messages.~n", [element(2,Trace)]),
- Out;
-dhandler(Trace, Out) when element(1, Trace) == seq_trace,
- tuple_size(Trace) >= 3 ->
- SeqTraceInfo = case Trace of
- {seq_trace, Lbl, STI, TS} ->
- io:format(Out, "SeqTrace ~p [~p]: ",
- [TS, Lbl]),
- STI;
- {seq_trace, Lbl, STI} ->
- io:format(Out, "SeqTrace [~p]: ",
- [Lbl]),
- STI
- end,
- case SeqTraceInfo of
- {send, Ser, Fr, To, Mes} ->
- io:format(Out, "(~p) ~p ! ~p [Serial: ~p]~n",
- [Fr, To, Mes, Ser]);
- {'receive', Ser, Fr, To, Mes} ->
- io:format(Out, "(~p) << ~p [Serial: ~p, From: ~p]~n",
- [To, Mes, Ser, Fr]);
- {print, Ser, Fr, _, Info} ->
- io:format(Out, "-> ~p [Serial: ~p, From: ~p]~n",
- [Info, Ser, Fr]);
- Else ->
- io:format(Out, "~p~n", [Else])
- end,
- Out;
-dhandler(_Trace, Out) ->
- Out.
-
-dhandler1(Trace, Size, Out) ->
-%%%! Self = self(),
- From = element(2, Trace),
- case element(3, Trace) of
- 'receive' ->
- case element(4, Trace) of
- {dbg,ok} -> ok;
- Message -> io:format(Out, "(~p) << ~p~n", [From,Message])
- end;
- 'send' ->
- Message = element(4, Trace),
- case element(5, Trace) of
-%%%! This causes messages to disappear when used by ttb (observer). Tests
-%%%! so far show that there is no difference in results with dbg even if I
-%%%! comment it out, so I hope this is only some old code which isn't
-%%%! needed anymore... /siri
-%%%! Self -> ok;
- To -> io:format(Out, "(~p) ~p ! ~p~n", [From,To,Message])
- end;
- call ->
- case element(4, Trace) of
- MFA when Size == 5 ->
- Message = element(5, Trace),
- io:format(Out, "(~p) call ~s (~p)~n",
- [From,ffunc(MFA),Message]);
- MFA ->
- io:format(Out, "(~p) call ~s~n", [From,ffunc(MFA)])
- end;
- return -> %% To be deleted...
- case element(4, Trace) of
- MFA when Size == 5 ->
- Ret = element(5, Trace),
- io:format(Out, "(~p) old_ret ~s -> ~p~n",
- [From,ffunc(MFA),Ret]);
- MFA ->
- io:format(Out, "(~p) old_ret ~s~n", [From,ffunc(MFA)])
- end;
- return_from ->
- MFA = element(4, Trace),
- Ret = element(5, Trace),
- io:format(Out, "(~p) returned from ~s -> ~p~n",
- [From,ffunc(MFA),Ret]);
- return_to ->
- MFA = element(4, Trace),
- io:format(Out, "(~p) returning to ~s~n", [From,ffunc(MFA)]);
- spawn when Size == 5 ->
- Pid = element(4, Trace),
- MFA = element(5, Trace),
- io:format(Out, "(~p) spawn ~p as ~s~n", [From,Pid,ffunc(MFA)]);
- Op ->
- io:format(Out, "(~p) ~p ~s~n", [From,Op,ftup(Trace,4,Size)])
- end,
- Out.
-
-
-%%% These f* functions returns non-flat strings
-
-%% {M,F,[A1, A2, ..., AN]} -> "M:F(A1, A2, ..., AN)"
-%% {M,F,A} -> "M:F/A"
-ffunc({M,F,Argl}) when is_list(Argl) ->
- io_lib:format("~p:~p(~s)", [M, F, fargs(Argl)]);
-ffunc({M,F,Arity}) ->
- io_lib:format("~p:~p/~p", [M,F,Arity]);
-ffunc(X) -> io_lib:format("~p", [X]).
-
-%% Integer -> "Integer"
-%% [A1, A2, ..., AN] -> "A1, A2, ..., AN"
-fargs(Arity) when is_integer(Arity) -> integer_to_list(Arity);
-fargs([]) -> [];
-fargs([A]) -> io_lib:format("~p", [A]); %% last arg
-fargs([A|Args]) -> [io_lib:format("~p,", [A]) | fargs(Args)];
-fargs(A) -> io_lib:format("~p", [A]). % last or only arg
-
-%% {A_1, A_2, ..., A_N} -> "A_Index A_Index+1 ... A_Size"
-ftup(Trace, Index, Index) ->
- io_lib:format("~p", [element(Index, Trace)]);
-ftup(Trace, Index, Size) ->
- [io_lib:format("~p ", [element(Index, Trace)])
- | ftup(Trace, Index+1, Size)].
-%% ------------------------------------------------------------------------------
-
-%% ==============================================================================
-%% Functions handling the trace-port. Copied from dbg.erl
-%% ==============================================================================
-
-trace_port_control(Port, flush) ->
- case trace_port_control(Port, $f, "") of
- {ok, [0]} -> ok;
- {ok, _} -> {error, not_supported_by_trace_driver};
- Other -> Other
- end.
-
-trace_port_control(Port, Command, Arg) when is_port(Port)->
- case catch port_control(Port, Command, Arg) of
- {'EXIT', _} -> {error, {no_trace_driver, node()}};
- Result -> Result
- end.
-
-
-trace_port(file, {Filename, wrap, Tail}) ->
- trace_port(file, {Filename, wrap, Tail, 128*1024});
-trace_port(file, {Filename, wrap, Tail, WrapSize}) ->
- trace_port(file, {Filename, wrap, Tail, WrapSize, 8});
-trace_port(file, {Filename, wrap, Tail, WrapSize, WrapCnt})
- when is_list(Tail),
- is_integer(WrapSize), WrapSize >= 0, WrapSize < (1 bsl 32),
- is_integer(WrapCnt), WrapCnt >= 1, WrapCnt < (1 bsl 32) ->
- trace_port1(file, Filename, {wrap, Tail, WrapSize, WrapCnt, 0});
-trace_port(file, {Filename, wrap, Tail, {time, WrapTime}, WrapCnt})
- when is_list(Tail),
- is_integer(WrapTime), WrapTime >= 1, WrapTime < (1 bsl 32),
- is_integer(WrapCnt), WrapCnt >= 1, WrapCnt < (1 bsl 32) ->
- trace_port1(file, Filename, {wrap, Tail, 0, WrapCnt, WrapTime});
-trace_port(file, Filename) when is_list(Filename) ->
- trace_port1(file, Filename, nowrap);
-
-trace_port(ip, Portno) when is_integer(Portno) ->
- trace_port(ip,{Portno,50});
-
-trace_port(ip, {Portno, Qsiz}) when is_integer(Portno), is_integer(Qsiz) ->
- fun() ->
- Driver = "trace_ip_drv",
- Dir1 = filename:join(code:priv_dir(runtime_tools), "lib"),
- case catch erl_ddll:load_driver(Dir1, Driver) of
- ok ->
- ok;
- _ ->
- Dir2 = filename:join(
- Dir1,
- erlang:system_info(system_architecture)),
- catch erl_ddll:load_driver(Dir2, Driver)
- end,
- L = lists:flatten(
- io_lib:format("~s ~p ~p 2",
- [Driver, Portno, Qsiz])),
- open_port({spawn, L}, [eof])
- end.
-
-trace_port1(file, Filename, Options) ->
- Driver = "trace_file_drv",
- fun() ->
- Name = filename:absname(Filename),
- %% Absname is needed since the driver uses
- %% the supplied name without further investigations,
- %% and if the name is relative the resulting path
- %% might be too long which can cause a bus error
- %% on vxworks instead of a nice error code return.
- %% Also, the absname must be found inside the fun,
- %% in case the actual node where the port shall be
- %% started is on another node (or even another host)
- {Wrap, Tail} =
- case Options of
- {wrap, T, WrapSize, WrapCnt, WrapTime} ->
- {lists:flatten(
- io_lib:format("w ~p ~p ~p ~p ",
- [WrapSize, WrapCnt, WrapTime,
- length(Name)])),
- T};
- nowrap ->
- {"", ""}
- end,
- Command = Driver ++ " " ++ Wrap ++ "n " ++ Name ++ Tail,
- Dir1 = filename:join(code:priv_dir(runtime_tools), "lib"),
- case catch erl_ddll:load_driver(Dir1, Driver) of
- ok ->
- ok;
- _ ->
- Dir2 = filename:join(
- Dir1,
- erlang:system_info(system_architecture)),
- catch erl_ddll:load_driver(Dir2, Driver)
- end,
- if element(1, Options) == wrap ->
- %% Delete all files from any previous wrap log
- Files = wrap_postsort(wrap_presort(Name, Tail)),
- lists:foreach(
- fun(N) -> file:delete(N) end,
- Files);
- true -> ok
- end,
- open_port({spawn, Command}, [eof])
- end.
-
-%% Find all possible wrap log files.
-%% Returns: a list of sort converted filenames.
-%%
-%% The sort conversion is done by extracting the wrap sequence counter
-%% from the filename, and calling wrap_encode/2.
-wrap_presort(Filename, Tail) ->
- Name = filename:basename(Filename),
- Dirname = filename:dirname(Filename),
- case file:list_dir(Dirname) of
- {ok, Files} ->
- lists:zf(
- fun(N) ->
- case match_front(N, Name) of
- false ->
- false;
- X ->
- case match_rear(X, Tail) of
- false ->
- false;
- C -> % Counter
- case match_0_9(C) of
- true ->
- {true,
-% filename:join(Dirname, N)}
- wrap_encode(
- filename:join(Dirname, N),
- C)};
- false ->
- false
- end
- end
- end
- end,
- Files);
- _ ->
- []
- end.
-
-%% Extract the filenames from a list of sort converted ones.
-wrap_postsort(Files) ->
- lists:map(fun wrap_name/1, Files).
-
-wrap_encode(N, C) ->
- {list_to_integer(C), N}.
-
-wrap_name({_C, N}) ->
- N.
-
-%% Returns what is left of ListA when removing all matching
-%% elements from ListB, or false if some element did not match,
-%% or if ListA runs out of elements before ListB.
-match_front(ListA, []) when is_list(ListA) ->
- ListA;
-match_front([], ListB) when is_list(ListB) ->
- false;
-match_front([Hd|TlA], [Hd|TlB]) ->
- match_front(TlA,TlB);
-match_front([_HdA|_], [_HdB|_]) ->
- false.
-
-%% Reversed version of match_front/2
-match_rear(ListA, ListB) when is_list(ListA), is_list(ListB) ->
- case match_front(lists:reverse(ListA), lists:reverse(ListB)) of
- false ->
- false;
- List ->
- lists:reverse(List)
- end.
-
-%% Returns true if the non-empty list arguments contains all
-%% characters $0 .. $9.
-match_0_9([]) ->
- false;
-match_0_9([H]) when is_integer(H), $0 =< H, H =< $9 ->
- true;
-match_0_9([H|T]) when is_integer(H), $0 =< H, H =< $9 ->
- match_0_9(T);
-match_0_9(L) when is_list(L) ->
- false.
-%% -----------------------------------------------------------------------------
-
-
-%% -----------------------------------------------------------------------------
-%% Functions working on the tracerdata structure.
-%% -----------------------------------------------------------------------------
-
-%% Tracerdata is the structure which specifies to where tracing is logged at this
-%% runtime component. It may now (and in the future specify) several things.
-%% Currently it can consist of:
-%% LogTD: specifying how trace-log data shall be handled.
-%% TiTD : trace information, specifying how trace information shall be handled.
-%%
-%% Tracerdata may also contain quick or standard forms of LogTD and/or TiTD.
-%% For instance if a standard handler-fun shall be used. The handler fun is not
-%% part of the tracerdata but rather specified by a constant.
-
-
-%% Help function that translates an input-tracerdata to useful internal formats.
-%% This since the tracerdata may consist of specifications which shall be
-%% translated into funs or similar.
-%% Returns {ok,LogTD,TiTD} or {error,Reason}.
-%% Note that TiTD may be 'void' since TiTD is not mandatory.
-translate_td(TracerData) when is_list(TracerData) -> % Both log and ti.
- case translate_td_logtd(get_trace_log_tracerdata(TracerData)) of
- {ok,LogTD} ->
- case translate_td_titd(get_ti_log_tracerdata(TracerData)) of
- {ok,TiTD} ->
- {ok,LogTD,TiTD};
- {error,Reason} ->
- {error,Reason}
- end;
- {error,Reason} ->
- {error,Reason}
- end;
-translate_td(TracerData) -> % The it is just LogTD!?
- case translate_td_logtd(TracerData) of
- {ok,LogTD} ->
- {ok,LogTD,void};
- {error,Reason} ->
- {error,Reason}
- end.
-%% -----------------------------------------------------------------------------
-
-%% Help function translating trace-log tracerdata.
-translate_td_logtd(collector) -> % This rt will act as receiver.
- {ok,{fun dhandler/2,user}}; % Simple terminal io.
-translate_td_logtd({relayer,Tracer}) when is_pid(Tracer) ->
- {ok,{fun relay_handler/2,Tracer}}; % Relay trace-msg to Tracer-pid.
-translate_td_logtd({HandlerFun,Data}) when is_function(HandlerFun) ->
- {ok,{HandlerFun,Data}}; % Own invented fun.
-translate_td_logtd({Type,Parameters}) when Type==ip;Type==file ->
- {ok,{Type,Parameters}}; % Built in trace-port
-translate_td_logtd(false) -> % Unusual but no trace log.
- {ok,void};
-translate_td_logtd(Arg) ->
- {error,{bad_log_td,Arg}}.
-%% -----------------------------------------------------------------------------
-
-%% Help function translating ti-log tracerdata.
-translate_td_titd(TiTD={file,FileName}) when is_list(FileName) ->
- {ok,TiTD};
-translate_td_titd({file,FileName,
- {InitPublLDmfa={M1,F1,L1},
- RemovePublLDmf={M2,F2},
- CleanPublLDmf={M3,F3}}})
- when is_list(FileName),is_atom(M1),is_atom(F1),is_atom(M2),is_atom(F2),is_list(L1),is_atom(M3),is_atom(F3) ->
- {ok,{file,FileName,{InitPublLDmfa,RemovePublLDmf,CleanPublLDmf}}};
-translate_td_titd({file,FileName,
- {InitPublLDmfa={M1,F1,L1},
- void,
- CleanPublLDmf={M3,F3}}})
- when is_list(FileName),is_atom(M1),is_atom(F1),is_list(L1),is_atom(M3),is_atom(F3) ->
- {ok,{file,FileName,{InitPublLDmfa,void,CleanPublLDmf}}};
-translate_td_titd(false) -> % Means no ti-tracerdata.
- {ok,void};
-translate_td_titd(TiTD) ->
- {error,{bad_ti_td,TiTD}}.
-%% -----------------------------------------------------------------------------
-
-%% This function retrieves the trace-log part of a TracerData list structure.
-%% Returns TraceLogTD or 'false'.
-get_trace_log_tracerdata(TracerData) ->
- case lists:keysearch(trace,1,TracerData) of
- {value,{_,LogTD}} ->
- LogTD;
- false ->
- false
- end.
-%% -----------------------------------------------------------------------------
-
-%% This function retrieves the ti-log part of a TracerData list structure.
-%% Returns TiLogTD or 'false'.
-get_ti_log_tracerdata(TracerData) ->
- case lists:keysearch(ti,1,TracerData) of
- {value,{_,TiTD}} ->
- TiTD;
- false ->
- false
- end.
-%% -----------------------------------------------------------------------------
-
-%% Help function which checks that parameters to the built in trace-port are
-%% sane.
-check_traceport_parameters(Type,Args) ->
- case {Type,Args} of
- {file,{FileName,wrap,Tail}} when is_list(FileName),is_list(Tail) ->
- ok;
- {file,{FileName,wrap,Tail,WrapSize}}
- when is_list(FileName),
- is_list(Tail),
- is_integer(WrapSize),WrapSize>=0,WrapSize< (1 bsl 32) ->
- ok;
- {file,{FileName,wrap,Tail,WrapSize,WrapCnt}}
- when is_list(FileName),is_list(Tail),
- is_integer(WrapSize), WrapSize >= 0, WrapSize < (1 bsl 32),
- is_integer(WrapCnt), WrapCnt >= 1, WrapCnt < (1 bsl 32) ->
- ok;
- {file,{FileName,wrap,Tail,{time,WrapTime},WrapCnt}}
- when is_list(FileName),is_list(Tail),
- is_integer(WrapTime), WrapTime >= 1, WrapTime < (1 bsl 32),
- is_integer(WrapCnt), WrapCnt >= 1, WrapCnt < (1 bsl 32) ->
- ok;
- {file,FileName} when is_list(FileName) ->
- ok;
- {ip,Portno} when is_integer(Portno),Portno=<16#FFFF ->
- ok;
- {ip,{Portno,Qsiz}} when is_integer(Portno),Portno=<16#FFFF,is_integer(Qsiz) ->
- ok;
- _ ->
- {error,{trace_port_args,[Type,Args]}}
- end.
-%% -----------------------------------------------------------------------------
-
-
-%% -----------------------------------------------------------------------------
-%% Default overload functionality.
-%% -----------------------------------------------------------------------------
-
-%% A default overload protection function. An overload function must take
-%% one argument and return 'ok' or {suspend,SuspendReason}.
-default_overload_func(_) ->
- case process_info(self(),message_queue_len) of
- {message_queue_len,N} when N > 1000 ->
- {suspend,rt_max_queue_len};
- _ ->
- ok
- end.
-%% -----------------------------------------------------------------------------
-
-%% =============================================================================
-%% Functions working on the internal loopdata structure.
-%% =============================================================================
-
-%% Help function simply adding Fetcher as a fetcher process to the loopdata.
-%% Returns a new loopdata structure.
-add_fetcher_ld(Fetcher,LD) ->
- LD#rt{fetchers=[Fetcher|LD#rt.fetchers]}.
-%% -----------------------------------------------------------------------------
-
-%% Help function investigating if the first argument is a known fetcher process
-%% or not. If it is, it also removed it from the fetchers list in the loopdata
-%% structure.
-%% Returns {true,NewLoopData} or 'false'.
-remove_fetcher_ld(Fetcher,LD) ->
- NewFetchers=lists:delete(Fetcher,LD#rt.fetchers),
- if
- NewFetchers/=LD#rt.fetchers ->
- {true,LD#rt{fetchers=NewFetchers}};
- true -> % No it was not a fetcher process.
- false
- end.
-%% -----------------------------------------------------------------------------
-
-%%% end of file
-