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.\" -*- mode: troff; coding: utf-8 -*-
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.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
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.\" ========================================================================
.\"
.IX Title "Test2::EventFacet::Trace 3"
.TH Test2::EventFacet::Trace 3 2023-05-26 "perl v5.38.0" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
Test2::EventFacet::Trace \- Debug information for events
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The Test2::API::Context object, as well as all Test2::Event types need to
have access to information about where they were created.  This object
represents that information.
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&    use Test2::EventFacet::Trace;
\&
\&    my $trace = Test2::EventFacet::Trace\->new(
\&        frame => [$package, $file, $line, $subname],
\&    );
.Ve
.SH "FACET FIELDS"
.IX Header "FACET FIELDS"
.ie n .IP "$string = $trace\->{details}" 4
.el .IP "\f(CW$string\fR = \f(CW$trace\fR\->{details}" 4
.IX Item "$string = $trace->{details}"
.PD 0
.ie n .IP "$string = $trace\->\fBdetails()\fR" 4
.el .IP "\f(CW$string\fR = \f(CW$trace\fR\->\fBdetails()\fR" 4
.IX Item "$string = $trace->details()"
.PD
Used as a custom trace message that will be used INSTEAD of
\&\f(CW\*(C`at <FILE> line <LINE>\*(C'\fR when calling \f(CW\*(C`$trace\->debug\*(C'\fR.
.ie n .IP "$frame = $trace\->{frame}" 4
.el .IP "\f(CW$frame\fR = \f(CW$trace\fR\->{frame}" 4
.IX Item "$frame = $trace->{frame}"
.PD 0
.ie n .IP "$frame = $trace\->\fBframe()\fR" 4
.el .IP "\f(CW$frame\fR = \f(CW$trace\fR\->\fBframe()\fR" 4
.IX Item "$frame = $trace->frame()"
.PD
Get the call frame arrayref.
.Sp
.Vb 1
\&    [$package, $file, $line, $subname]
.Ve
.ie n .IP "$int = $trace\->{pid}" 4
.el .IP "\f(CW$int\fR = \f(CW$trace\fR\->{pid}" 4
.IX Item "$int = $trace->{pid}"
.PD 0
.ie n .IP "$int = $trace\->\fBpid()\fR" 4
.el .IP "\f(CW$int\fR = \f(CW$trace\fR\->\fBpid()\fR" 4
.IX Item "$int = $trace->pid()"
.PD
The process ID in which the event was generated.
.ie n .IP "$int = $trace\->{tid}" 4
.el .IP "\f(CW$int\fR = \f(CW$trace\fR\->{tid}" 4
.IX Item "$int = $trace->{tid}"
.PD 0
.ie n .IP "$int = $trace\->\fBtid()\fR" 4
.el .IP "\f(CW$int\fR = \f(CW$trace\fR\->\fBtid()\fR" 4
.IX Item "$int = $trace->tid()"
.PD
The thread ID in which the event was generated.
.ie n .IP "$id = $trace\->{cid}" 4
.el .IP "\f(CW$id\fR = \f(CW$trace\fR\->{cid}" 4
.IX Item "$id = $trace->{cid}"
.PD 0
.ie n .IP "$id = $trace\->\fBcid()\fR" 4
.el .IP "\f(CW$id\fR = \f(CW$trace\fR\->\fBcid()\fR" 4
.IX Item "$id = $trace->cid()"
.PD
The ID of the context that was used to create the event.
.ie n .IP "$uuid = $trace\->{uuid}" 4
.el .IP "\f(CW$uuid\fR = \f(CW$trace\fR\->{uuid}" 4
.IX Item "$uuid = $trace->{uuid}"
.PD 0
.ie n .IP "$uuid = $trace\->\fBuuid()\fR" 4
.el .IP "\f(CW$uuid\fR = \f(CW$trace\fR\->\fBuuid()\fR" 4
.IX Item "$uuid = $trace->uuid()"
.PD
The UUID of the context that was used to create the event. (If uuid tagging was
enabled)
.ie n .IP "($pkg, $file, $line, $subname) = $trace\->call" 4
.el .IP "($pkg, \f(CW$file\fR, \f(CW$line\fR, \f(CW$subname\fR) = \f(CW$trace\fR\->call" 4
.IX Item "($pkg, $file, $line, $subname) = $trace->call"
Get the basic call info as a list.
.ie n .IP "@caller = $trace\->full_call" 4
.el .IP "\f(CW@caller\fR = \f(CW$trace\fR\->full_call" 4
.IX Item "@caller = $trace->full_call"
Get the full caller(N) results.
.ie n .IP "$warning_bits = $trace\->warning_bits" 4
.el .IP "\f(CW$warning_bits\fR = \f(CW$trace\fR\->warning_bits" 4
.IX Item "$warning_bits = $trace->warning_bits"
Get index 9 from the full caller info. This is the warnings_bits field.
.Sp
The value of this is not portable across perl versions or even processes.
However it can be used in the process that generated it to reproduce the
warnings settings in a new scope.
.Sp
.Vb 4
\&    eval <<EOT;
\&    BEGIN { ${^WARNING_BITS} = $trace\->warning_bits };
\&    ... context\*(Aqs warning settings apply here ...
\&    EOT
.Ve
.SS "DISCOURAGED HUB RELATED FIELDS"
.IX Subsection "DISCOURAGED HUB RELATED FIELDS"
These fields were not always set properly by tools. These are \fBMOSTLY\fR
deprecated by the Test2::EventFacet::Hub facets. These fields are not
required, and may only reflect the hub that was current when the event was
created, which is not necessarily the same as the hub the event was sent
through.
.PP
Some tools did do a good job setting these to the correct hub, but you cannot
always rely on that. Use the 'hubs' facet list instead.
.ie n .IP "$hid = $trace\->{hid}" 4
.el .IP "\f(CW$hid\fR = \f(CW$trace\fR\->{hid}" 4
.IX Item "$hid = $trace->{hid}"
.PD 0
.ie n .IP "$hid = $trace\->\fBhid()\fR" 4
.el .IP "\f(CW$hid\fR = \f(CW$trace\fR\->\fBhid()\fR" 4
.IX Item "$hid = $trace->hid()"
.PD
The ID of the hub that was current when the event was created.
.ie n .IP "$huuid = $trace\->{huuid}" 4
.el .IP "\f(CW$huuid\fR = \f(CW$trace\fR\->{huuid}" 4
.IX Item "$huuid = $trace->{huuid}"
.PD 0
.ie n .IP "$huuid = $trace\->\fBhuuid()\fR" 4
.el .IP "\f(CW$huuid\fR = \f(CW$trace\fR\->\fBhuuid()\fR" 4
.IX Item "$huuid = $trace->huuid()"
.PD
The UUID of the hub that was current when the event was created. (If uuid
tagging was enabled).
.ie n .IP "$int = $trace\->{nested}" 4
.el .IP "\f(CW$int\fR = \f(CW$trace\fR\->{nested}" 4
.IX Item "$int = $trace->{nested}"
.PD 0
.ie n .IP "$int = $trace\->\fBnested()\fR" 4
.el .IP "\f(CW$int\fR = \f(CW$trace\fR\->\fBnested()\fR" 4
.IX Item "$int = $trace->nested()"
.PD
How deeply nested the event is.
.ie n .IP "$bool = $trace\->{buffered}" 4
.el .IP "\f(CW$bool\fR = \f(CW$trace\fR\->{buffered}" 4
.IX Item "$bool = $trace->{buffered}"
.PD 0
.ie n .IP "$bool = $trace\->\fBbuffered()\fR" 4
.el .IP "\f(CW$bool\fR = \f(CW$trace\fR\->\fBbuffered()\fR" 4
.IX Item "$bool = $trace->buffered()"
.PD
True if the event was buffered and not sent to the formatter independent of a
parent (This should never be set when nested is \f(CW0\fR or \f(CW\*(C`undef\*(C'\fR).
.SH METHODS
.IX Header "METHODS"
\&\fBNote:\fR All facet frames are also methods.
.ie n .IP $trace\->set_detail($msg) 4
.el .IP \f(CW$trace\fR\->set_detail($msg) 4
.IX Item "$trace->set_detail($msg)"
.PD 0
.ie n .IP "$msg = $trace\->detail" 4
.el .IP "\f(CW$msg\fR = \f(CW$trace\fR\->detail" 4
.IX Item "$msg = $trace->detail"
.PD
Used to get/set a custom trace message that will be used INSTEAD of
\&\f(CW\*(C`at <FILE> line <LINE>\*(C'\fR when calling \f(CW\*(C`$trace\->debug\*(C'\fR.
.Sp
\&\f(CWdetail()\fR is an alias to the \f(CW\*(C`details\*(C'\fR facet field for backwards
compatibility.
.ie n .IP "$str = $trace\->debug" 4
.el .IP "\f(CW$str\fR = \f(CW$trace\fR\->debug" 4
.IX Item "$str = $trace->debug"
Typically returns the string \f(CW\*(C`at <FILE> line <LINE>\*(C'\fR. If \f(CW\*(C`detail\*(C'\fR is set
then its value will be returned instead.
.ie n .IP $trace\->alert($MESSAGE) 4
.el .IP \f(CW$trace\fR\->alert($MESSAGE) 4
.IX Item "$trace->alert($MESSAGE)"
This issues a warning at the frame (filename and line number where
errors should be reported).
.ie n .IP $trace\->throw($MESSAGE) 4
.el .IP \f(CW$trace\fR\->throw($MESSAGE) 4
.IX Item "$trace->throw($MESSAGE)"
This throws an exception at the frame (filename and line number where
errors should be reported).
.ie n .IP "($package, $file, $line, $subname) = $trace\->\fBcall()\fR" 4
.el .IP "($package, \f(CW$file\fR, \f(CW$line\fR, \f(CW$subname\fR) = \f(CW$trace\fR\->\fBcall()\fR" 4
.IX Item "($package, $file, $line, $subname) = $trace->call()"
Get the caller details for the debug-info. This is where errors should be
reported.
.ie n .IP "$pkg = $trace\->package" 4
.el .IP "\f(CW$pkg\fR = \f(CW$trace\fR\->package" 4
.IX Item "$pkg = $trace->package"
Get the debug-info package.
.ie n .IP "$file = $trace\->file" 4
.el .IP "\f(CW$file\fR = \f(CW$trace\fR\->file" 4
.IX Item "$file = $trace->file"
Get the debug-info filename.
.ie n .IP "$line = $trace\->line" 4
.el .IP "\f(CW$line\fR = \f(CW$trace\fR\->line" 4
.IX Item "$line = $trace->line"
Get the debug-info line number.
.ie n .IP "$subname = $trace\->subname" 4
.el .IP "\f(CW$subname\fR = \f(CW$trace\fR\->subname" 4
.IX Item "$subname = $trace->subname"
Get the debug-info subroutine name.
.ie n .IP "$sig = trace\->signature" 4
.el .IP "\f(CW$sig\fR = trace\->signature" 4
.IX Item "$sig = trace->signature"
Get a signature string that identifies this trace. This is used to check if
multiple events are related. The signature includes pid, tid, file, line
number, and the cid.
.SH SOURCE
.IX Header "SOURCE"
The source code repository for Test2 can be found at
\&\fIhttp://github.com/Test\-More/test\-more/\fR.
.SH MAINTAINERS
.IX Header "MAINTAINERS"
.IP "Chad Granum <exodist@cpan.org>" 4
.IX Item "Chad Granum <exodist@cpan.org>"
.SH AUTHORS
.IX Header "AUTHORS"
.PD 0
.IP "Chad Granum <exodist@cpan.org>" 4
.IX Item "Chad Granum <exodist@cpan.org>"
.PD
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2020 Chad Granum <exodist@cpan.org>.
.PP
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
.PP
See \fIhttp://dev.perl.org/licenses/\fR
Youez - 2016 - github.com/yon3zu
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