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.\"
.IX Title "Devel::GDB::LowLevel 3pm"
.TH Devel::GDB::LowLevel 3pm "2016-10-01" "perl v5.24.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
Devel::GDB::LowLevel \- Low\-level interface for communicating with GDB
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module is used internally by Devel::GDB.  It handles the low-level I/O
of communicating with the \s-1GDB\s0 process.
.SH "CONSTRUCTOR"
.IX Header "CONSTRUCTOR"
.IP "new" 4
.IX Item "new"
Spawns a \s-1GDB\s0 process.  Because this class only facilitates communication with
\&\s-1GDB \s0(\fInot\fR with the inferior process being debugged), you have to decide what
to do with the \f(CW\*(C`STDIN\*(C'\fR, \f(CW\*(C`STDOUT\*(C'\fR, and \f(CW\*(C`STDERR\*(C'\fR of that process.  There are a
few options available:
.RS 4
.IP "\(bu" 4
If \s-1STDIN\s0 is a tty, we can have the inferior process communicate directly
with the controlling tty (emulating the default behavior of gdb):
.Sp
.Vb 2
\&    $gdb = new Devel::GDB::LowLevel( \*(Aq\-execfile\*(Aq => $path_to_gdb,
\&                                     \*(Aq\-params\*(Aq   => $extra_gdb_params );
.Ve
.IP "\(bu" 4
Or, we can create an \f(CW\*(C`Expect\*(C'\fR object to communicate with the inferior process:
.Sp
.Vb 2
\&    $gdb = new Devel::GDB::LowLevel( \*(Aq\-create\-expect\*(Aq => 1 );
\&    $expect = $gdb\->get_expect_obj();
.Ve
.IP "\(bu" 4
Or, we can create our own tty and use that:
.Sp
.Vb 1
\&    $gdb = new Devel::GDB::LowLevel( \*(Aq\-use\-tty\*(Aq => \*(Aq/dev/pts/123\*(Aq );
.Ve
.RE
.RS 4
.RE
.SH "METHODS"
.IX Header "METHODS"
.IP "send" 4
.IX Item "send"
Sends a raw line of text to \s-1GDB. \s0 This should not contain any newlines (they
will be stripped).  This method only sends a request, and does not wait for a
response.
.IP "get_reader" 4
.IX Item "get_reader"
Returns the file handle from which to read \s-1GDB\s0 responses.
.IP "get_expect_obj" 4
.IX Item "get_expect_obj"
Returns the \f(CW\*(C`Expect\*(C'\fR object created in the constructor.  Dies if 
\&\f(CW\*(Aq\-create\-expect\*(Aq\fR was not passed to \f(CW\*(C`new\*(C'\fR.
.IP "interrupt" 4
.IX Item "interrupt"
Send \s-1SIGINT\s0 to the \s-1GDB\s0 session, interrupting the inferior process
(if any).
.SH "SEE ALSO"
.IX Header "SEE ALSO"
IPC::Open2
.SH "AUTHORS"
.IX Header "AUTHORS"
Antal Novak <afn@cpan.org>, Josef Ezra <jezra@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (C) 2007 by Antal Novak & Josef Ezra
.PP
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.8 or,
at your option, any later version of Perl 5 you may have available.