iverilog/vvp/examples/fork.vvp

:vpi_module "system";

; Copyright (c) 2001-2008  Stephen Williams (steve@icarus.com)
;
;    This source code is free software; you can redistribute it
;    and/or modify it in source code form under the terms of the GNU
;    General Public License as published by the Free Software
;    Foundation; either version 2 of the License, or (at your option)
;    any later version.
;
;    This program is distributed in the hope that it will be useful,
;    but WITHOUT ANY WARRANTY; without even the implied warranty of
;    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;    GNU General Public License for more details.
;
;    You should have received a copy of the GNU General Public License
;    along with this program; if not, write to the Free Software
;    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

; This sample demonstrates the behavior of %fork and %join.

S_main .scope module, "main";

child	%vpi_call 0 0 "$display", "I'm a child";
	%end;

parent	%fork	child, S_main;
	%vpi_call 0 0 "$display", "I'm a parent";
	%join;
	%vpi_call 0 0 "$display", "reaped";
	%end;

	.thread parent;
:file_names 2;
    "N/A";
    "<interactive>";