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make_pattern(RawPattern) -> TracePattern
Types:
RawPattern = detail_level()
TracePattern = erlang_trace_pattern_match_spec()
detail_level() = min | max | integer(X) when X =< 0, X >= 100
Makes a trace pattern suitable to feed change_pattern/1
Min detail level deactivates tracing of calls to phone_home/4,5
Max detail level activates tracing of all calls to phone_home/4,5
integer(X) detail level activates tracing of all calls to phone_home/4,5 whose detail level argument is lesser than X.
See also erlang:trace_pattern/2 for more info about its match_spec()
Types:
Pattern = detail_level() |
empty_match_spec() |
erlang_trace_pattern_match_spec()
detail_level() = min | max | integer(X) when X =<0, X >= 100
empty_match_spec() = []
Activates/deactivates tracing by changing the current trace pattern.
Min detail level deactivates tracing of calls to phone_home/4,5
Max detail level activates tracing of all calls to phone_home/4,5
integer(X) detail level activates tracing of all calls to phone_home/4,5 whose detail level argument is lesser than X.
An empty match spec deactivates tracing of calls to phone_home/4,5
Other match specs activates tracing of calls to phone_home/4,5 accordlingly with erlang:trace_pattern/2.
parse_event(Mod, ValidTraceData) -> false | true | {true, Event}
Types:
Mod = module_name() | undefined
<v>module_name() = atom()
<v>ValidTraceData = erlang_trace_data() | record(event)
erlang_trace_data() =
{trace, Pid, Label, Info} |
{trace, Pid, Label, Info, Extra} |
{trace_ts, Pid, Label, Info, ReportedTS} |
{trace_ts, Pid, Label, Info, Extra, ReportedTS} |
{seq_trace, Label, Info} |
{seq_trace, Label, Info, ReportedTS} |
{drop, NumberOfDroppedItems}
Transforms trace data and makes an event record out of it.
See erlang:trace/3 for more info about the semantics of the trace data.
An event record consists of the following fields: detail_level - Noise has a high level as opposed to essentials. trace_ts - Time when the trace was generated. Same as event_ts if omitted in trace data. event_ts - Time when the event record was created. from - From actor, such as sender of a message. to - To actor, such as receiver of message. label - Label intended to provide a brief event summary. contents - All nitty gritty details of the event.
See et:phone_home/4 and et:phone_home/5 for details.
Returns: {true, Event} - where Event is an #event{} record representing the trace data true - means that the trace data already is an event record and that it is valid as it is. No transformation is needed. false - means that the trace data is uninteresting and should be dropped