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.\" ========================================================================
.\"
.IX Title "Test2::API::Instance 3"
.TH Test2::API::Instance 3 "2019-10-24" "perl v5.30.2" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.if n .ad l
.nh
.SH "NAME"
Test2::API::Instance \- Object used by Test2::API under the hood
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This object encapsulates the global shared state tracked by
Test2. A single global instance of this package is stored (and
obscured) by the Test2::API package.
.PP
There is no reason to directly use this package. This package is documented for
completeness. This package can change, or go away completely at any time.
Directly using, or monkeypatching this package is not supported in any way
shape or form.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Test2::API::Instance;
\&
\&    my $obj = Test2::API::Instance\->new;
.Ve
.ie n .IP "$pid = $obj\->pid" 4
.el .IP "\f(CW$pid\fR = \f(CW$obj\fR\->pid" 4
.IX Item "$pid = $obj->pid"
\&\s-1PID\s0 of this instance.
.ie n .IP "$obj\->tid" 4
.el .IP "\f(CW$obj\fR\->tid" 4
.IX Item "$obj->tid"
Thread \s-1ID\s0 of this instance.
.ie n .IP "$obj\->\fBreset()\fR" 4
.el .IP "\f(CW$obj\fR\->\fBreset()\fR" 4
.IX Item "$obj->reset()"
Reset the object to defaults.
.ie n .IP "$obj\->\fBload()\fR" 4
.el .IP "\f(CW$obj\fR\->\fBload()\fR" 4
.IX Item "$obj->load()"
Set the internal state to loaded, and run and stored post-load callbacks.
.ie n .IP "$bool = $obj\->loaded" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->loaded" 4
.IX Item "$bool = $obj->loaded"
Check if the state is set to loaded.
.ie n .IP "$arrayref = $obj\->post_load_callbacks" 4
.el .IP "\f(CW$arrayref\fR = \f(CW$obj\fR\->post_load_callbacks" 4
.IX Item "$arrayref = $obj->post_load_callbacks"
Get the post-load callbacks.
.ie n .IP "$obj\->add_post_load_callback(sub { ... })" 4
.el .IP "\f(CW$obj\fR\->add_post_load_callback(sub { ... })" 4
.IX Item "$obj->add_post_load_callback(sub { ... })"
Add a post-load callback. If \f(CW\*(C`load()\*(C'\fR has already been called then the callback will
be immediately executed. If \f(CW\*(C`load()\*(C'\fR has not been called then the callback will be
stored and executed later when \f(CW\*(C`load()\*(C'\fR is called.
.ie n .IP "$hashref = $obj\->\fBcontexts()\fR" 4
.el .IP "\f(CW$hashref\fR = \f(CW$obj\fR\->\fBcontexts()\fR" 4
.IX Item "$hashref = $obj->contexts()"
Get a hashref of all active contexts keyed by hub id.
.ie n .IP "$arrayref = $obj\->context_acquire_callbacks" 4
.el .IP "\f(CW$arrayref\fR = \f(CW$obj\fR\->context_acquire_callbacks" 4
.IX Item "$arrayref = $obj->context_acquire_callbacks"
Get all context acquire callbacks.
.ie n .IP "$arrayref = $obj\->context_init_callbacks" 4
.el .IP "\f(CW$arrayref\fR = \f(CW$obj\fR\->context_init_callbacks" 4
.IX Item "$arrayref = $obj->context_init_callbacks"
Get all context init callbacks.
.ie n .IP "$arrayref = $obj\->context_release_callbacks" 4
.el .IP "\f(CW$arrayref\fR = \f(CW$obj\fR\->context_release_callbacks" 4
.IX Item "$arrayref = $obj->context_release_callbacks"
Get all context release callbacks.
.ie n .IP "$arrayref = $obj\->pre_subtest_callbacks" 4
.el .IP "\f(CW$arrayref\fR = \f(CW$obj\fR\->pre_subtest_callbacks" 4
.IX Item "$arrayref = $obj->pre_subtest_callbacks"
Get all pre-subtest callbacks.
.ie n .IP "$obj\->add_context_init_callback(sub { ... })" 4
.el .IP "\f(CW$obj\fR\->add_context_init_callback(sub { ... })" 4
.IX Item "$obj->add_context_init_callback(sub { ... })"
Add a context init callback. Subs are called every time a context is created. Subs
get the newly created context as their only argument.
.ie n .IP "$obj\->add_context_release_callback(sub { ... })" 4
.el .IP "\f(CW$obj\fR\->add_context_release_callback(sub { ... })" 4
.IX Item "$obj->add_context_release_callback(sub { ... })"
Add a context release callback. Subs are called every time a context is released. Subs
get the released context as their only argument. These callbacks should not
call release on the context.
.ie n .IP "$obj\->add_pre_subtest_callback(sub { ... })" 4
.el .IP "\f(CW$obj\fR\->add_pre_subtest_callback(sub { ... })" 4
.IX Item "$obj->add_pre_subtest_callback(sub { ... })"
Add a pre-subtest callback. Subs are called every time a subtest is
going to be run. Subs get the subtest name, coderef, and any
arguments.
.ie n .IP "$obj\->\fBset_exit()\fR" 4
.el .IP "\f(CW$obj\fR\->\fBset_exit()\fR" 4
.IX Item "$obj->set_exit()"
This is intended to be called in an \f(CW\*(C`END { ... }\*(C'\fR block. This will look at
test state and set $?. This will also call any end callbacks, and wait on child
processes/threads.
.ie n .IP "$obj\->set_ipc_pending($val)" 4
.el .IP "\f(CW$obj\fR\->set_ipc_pending($val)" 4
.IX Item "$obj->set_ipc_pending($val)"
Tell other processes and threads there is a pending event. \f(CW$val\fR should be a
unique value no other thread/process will generate.
.Sp
\&\fBNote:\fR This will also make the current process see a pending event.
.ie n .IP "$pending = $obj\->\fBget_ipc_pending()\fR" 4
.el .IP "\f(CW$pending\fR = \f(CW$obj\fR\->\fBget_ipc_pending()\fR" 4
.IX Item "$pending = $obj->get_ipc_pending()"
This returns \-1 if it is not possible to know.
.Sp
This returns 0 if there are no pending events.
.Sp
This returns 1 if there are pending events.
.ie n .IP "$timeout = $obj\->ipc_timeout;" 4
.el .IP "\f(CW$timeout\fR = \f(CW$obj\fR\->ipc_timeout;" 4
.IX Item "$timeout = $obj->ipc_timeout;"
.PD 0
.ie n .IP "$obj\->set_ipc_timeout($timeout);" 4
.el .IP "\f(CW$obj\fR\->set_ipc_timeout($timeout);" 4
.IX Item "$obj->set_ipc_timeout($timeout);"
.PD
How long to wait for child processes and threads before aborting.
.ie n .IP "$drivers = $obj\->ipc_drivers" 4
.el .IP "\f(CW$drivers\fR = \f(CW$obj\fR\->ipc_drivers" 4
.IX Item "$drivers = $obj->ipc_drivers"
Get the list of \s-1IPC\s0 drivers.
.ie n .IP "$obj\->add_ipc_driver($DRIVER_CLASS)" 4
.el .IP "\f(CW$obj\fR\->add_ipc_driver($DRIVER_CLASS)" 4
.IX Item "$obj->add_ipc_driver($DRIVER_CLASS)"
Add an \s-1IPC\s0 driver to the list. The most recently added \s-1IPC\s0 driver will become
the global one during initialization. If a driver is added after initialization
has occurred a warning will be generated:
.Sp
.Vb 1
\&    "IPC driver $driver loaded too late to be used as the global ipc driver"
.Ve
.ie n .IP "$bool = $obj\->ipc_polling" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->ipc_polling" 4
.IX Item "$bool = $obj->ipc_polling"
Check if polling is enabled.
.ie n .IP "$obj\->enable_ipc_polling" 4
.el .IP "\f(CW$obj\fR\->enable_ipc_polling" 4
.IX Item "$obj->enable_ipc_polling"
Turn on polling. This will cull events from other processes and threads every
time a context is created.
.ie n .IP "$obj\->disable_ipc_polling" 4
.el .IP "\f(CW$obj\fR\->disable_ipc_polling" 4
.IX Item "$obj->disable_ipc_polling"
Turn off \s-1IPC\s0 polling.
.ie n .IP "$bool = $obj\->no_wait" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->no_wait" 4
.IX Item "$bool = $obj->no_wait"
.PD 0
.ie n .IP "$bool = $obj\->set_no_wait($bool)" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->set_no_wait($bool)" 4
.IX Item "$bool = $obj->set_no_wait($bool)"
.PD
Get/Set no_wait. This option is used to turn off process/thread waiting at exit.
.ie n .IP "$arrayref = $obj\->exit_callbacks" 4
.el .IP "\f(CW$arrayref\fR = \f(CW$obj\fR\->exit_callbacks" 4
.IX Item "$arrayref = $obj->exit_callbacks"
Get the exit callbacks.
.ie n .IP "$obj\->add_exit_callback(sub { ... })" 4
.el .IP "\f(CW$obj\fR\->add_exit_callback(sub { ... })" 4
.IX Item "$obj->add_exit_callback(sub { ... })"
Add an exit callback. This callback will be called by \f(CW\*(C`set_exit()\*(C'\fR.
.ie n .IP "$bool = $obj\->finalized" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->finalized" 4
.IX Item "$bool = $obj->finalized"
Check if the object is finalized. Finalization happens when either \f(CW\*(C`ipc()\*(C'\fR,
\&\f(CW\*(C`stack()\*(C'\fR, or \f(CW\*(C`format()\*(C'\fR are called on the object. Once finalization happens
these fields are considered unchangeable (not enforced here, enforced by
Test2).
.ie n .IP "$ipc = $obj\->ipc" 4
.el .IP "\f(CW$ipc\fR = \f(CW$obj\fR\->ipc" 4
.IX Item "$ipc = $obj->ipc"
Get the one true \s-1IPC\s0 instance.
.ie n .IP "$obj\->ipc_disable" 4
.el .IP "\f(CW$obj\fR\->ipc_disable" 4
.IX Item "$obj->ipc_disable"
Turn \s-1IPC\s0 off
.ie n .IP "$bool = $obj\->ipc_disabled" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->ipc_disabled" 4
.IX Item "$bool = $obj->ipc_disabled"
Check if \s-1IPC\s0 is disabled
.ie n .IP "$stack = $obj\->stack" 4
.el .IP "\f(CW$stack\fR = \f(CW$obj\fR\->stack" 4
.IX Item "$stack = $obj->stack"
Get the one true hub stack.
.ie n .IP "$formatter = $obj\->formatter" 4
.el .IP "\f(CW$formatter\fR = \f(CW$obj\fR\->formatter" 4
.IX Item "$formatter = $obj->formatter"
Get the global formatter. By default this is the \f(CW\*(AqTest2::Formatter::TAP\*(Aq\fR
package. This could be any package that implements the \f(CW\*(C`write()\*(C'\fR method. This
can also be an instantiated object.
.ie n .IP "$bool = $obj\->\fBformatter_set()\fR" 4
.el .IP "\f(CW$bool\fR = \f(CW$obj\fR\->\fBformatter_set()\fR" 4
.IX Item "$bool = $obj->formatter_set()"
Check if a formatter has been set.
.ie n .IP "$obj\->add_formatter($class)" 4
.el .IP "\f(CW$obj\fR\->add_formatter($class)" 4
.IX Item "$obj->add_formatter($class)"
.PD 0
.ie n .IP "$obj\->add_formatter($obj)" 4
.el .IP "\f(CW$obj\fR\->add_formatter($obj)" 4
.IX Item "$obj->add_formatter($obj)"
.PD
Add a formatter. The most recently added formatter will become the global one
during initialization. If a formatter is added after initialization has occurred
a warning will be generated:
.Sp
.Vb 1
\&    "Formatter $formatter loaded too late to be used as the global formatter"
.Ve
.ie n .IP "$obj\->set_add_uuid_via(sub { ... })" 4
.el .IP "\f(CW$obj\fR\->set_add_uuid_via(sub { ... })" 4
.IX Item "$obj->set_add_uuid_via(sub { ... })"
.PD 0
.ie n .IP "$sub = $obj\->\fBadd_uuid_via()\fR" 4
.el .IP "\f(CW$sub\fR = \f(CW$obj\fR\->\fBadd_uuid_via()\fR" 4
.IX Item "$sub = $obj->add_uuid_via()"
.PD
This allows you to provide a \s-1UUID\s0 generator. If provided UUIDs will be attached
to all events, hubs, and contexts. This is useful for storing, tracking, and
linking these objects.
.Sp
The sub you provide should always return a unique identifier. Most things will
expect a proper \s-1UUID\s0 string, however nothing in Test2::API enforces this.
.Sp
The sub will receive exactly 1 argument, the type of thing being tagged
\&'context', 'hub', or 'event'. In the future additional things may be tagged, in
which case new strings will be passed in. These are purely informative, you can
(and usually should) ignore them.
.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 2019 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