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Diffstat (limited to 'testsuite/vests/vhdl-93/ashenden/compliant/ch_19_ds-qn.vhd')
| -rw-r--r-- | testsuite/vests/vhdl-93/ashenden/compliant/ch_19_ds-qn.vhd | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/ashenden/compliant/ch_19_ds-qn.vhd b/testsuite/vests/vhdl-93/ashenden/compliant/ch_19_ds-qn.vhd new file mode 100644 index 0000000..0ed8b0b --- /dev/null +++ b/testsuite/vests/vhdl-93/ashenden/compliant/ch_19_ds-qn.vhd @@ -0,0 +1,162 @@ + +-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc + +-- This file is part of VESTs (Vhdl tESTs). + +-- VESTs is free software; you can redistribute it and/or modify it +-- 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. + +-- VESTs 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 VESTs; if not, write to the Free Software Foundation, +-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +-- --------------------------------------------------------------------- +-- +-- $Id: ch_19_ds-qn.vhd,v 1.3 2001-10-26 16:29:36 paw Exp $ +-- $Revision: 1.3 $ +-- +-- --------------------------------------------------------------------- + +library qsim; + +use qsim.qsim_types.all, random.random.all; + +architecture queue_net of disk_system is + + constant disk_cache_miss_rate : real := 0.2; + constant num_disks : positive := 2; + + constant disk_cache_fork_probabilities : probability_vector(1 to num_disks) + := ( others => disk_cache_miss_rate / real(num_disks) ); + + signal info_detail_control : info_detail_type := none; + signal new_job, cpu_queue_in, cpu_in, cpu_out, + quantum_expired, job_done, requesting_disk, + disk_cache_hit, request_done : arc_type; + signal disk_cache_miss, disk_done : arc_vector(1 to num_disks); + signal cpu_ready : boolean; + +begin + + new_jobs : entity source + generic map ( name => "new_jobs", + distribution => exponential, + mean_inter_arrival_time => 2 sec, + seed => sample_seeds(1), + time_unit => ms, + info_file_name => "new_jobs.dat" ) + port map ( out_arc => new_job, + info_detail => info_detail_control ); + + cpu_join : entity join + generic map ( name => "cpu_join", + time_unit => ms, + info_file_name => "cpu_join.dat" ) + port map ( in_arc(1) => quantum_expired, + in_arc(2) => new_job, + in_arc(3) => request_done, + out_arc => cpu_queue_in, + info_detail => info_detail_control ); + + cpu_queue : entity queue + generic map ( name => "cpu_queue", + time_unit => ms, + info_file_name => "cpu_queue.dat" ) + port map ( in_arc => cpu_queue_in, + out_arc => cpu_in, + out_ready => cpu_ready, + info_detail => info_detail_control ); + + cpu : entity server + generic map ( name => "cpu", + distribution => uniform, + mean_service_time => 50 ms, + seed => sample_seeds(2), + time_unit => ms, + info_file_name => "cpu.dat" ) + port map ( in_arc => cpu_in, + in_ready => cpu_ready, + out_arc => cpu_out, + info_detail => info_detail_control ); + + cpu_fork : entity fork + generic map ( name => "cpu_fork", + probabilities => ( 1 => 0.5, 2 => 0.45 ), + seed => sample_seeds(3), + time_unit => ms, + info_file_name => "cpu_fork.dat" ) + port map ( in_arc => cpu_out, + out_arc(1) => quantum_expired, + out_arc(2) => requesting_disk, + out_arc(3) => job_done, + info_detail => info_detail_control ); + + job_sink : entity sink + generic map ( name => "job_sink", + time_unit => ms, + info_file_name => "job_sink.dat" ) + port map ( in_arc => job_done, + info_detail => info_detail_control ); + + disk_cache_fork : entity fork + generic map ( name => "disk_cache_fork", + probabilities => disk_cache_fork_probabilities, + seed => sample_seeds(4), + time_unit => ms, + info_file_name => "disk_cache_fork.dat" ) + port map ( in_arc => requesting_disk, + out_arc(1 to num_disks) => disk_cache_miss, + out_arc(num_disks + 1) => disk_cache_hit, + info_detail => info_detail_control ); + + + disk_array : for disk_index in 1 to num_disks generate + + constant disk_index_str : string := integer'image(disk_index); + + signal disk_in : arc_type; + signal disk_ready : boolean; + + begin + + disk_queue : entity queue + generic map ( name => "disk_queue_" & disk_index_str, + time_unit => ms, + info_file_name => "disk_queue_" & disk_index_str & ".dat" ) + port map ( in_arc => disk_cache_miss(disk_index), + out_arc => disk_in, + out_ready => disk_ready, + info_detail => info_detail_control ); + + disk : entity server + generic map ( name => "disk_" & disk_index_str, + distribution => exponential, + mean_service_time => 15 ms, + seed => sample_seeds(4 + disk_index), + time_unit => ms, + info_file_name => "disk_" & disk_index_str & ".dat" ) + port map ( in_arc => disk_in, + in_ready => disk_ready, + out_arc => disk_done(disk_index), + info_detail => info_detail_control ); + + end generate disk_array; + + + disk_cache_join : entity join + generic map ( name => "disk_cache_join", + time_unit => ms, + info_file_name => "disk_cache_join.dat" ) + port map ( in_arc(1 to num_disks) => disk_done, + in_arc(num_disks + 1) => disk_cache_hit, + out_arc => request_done, + info_detail => info_detail_control ); + +end architecture queue_net; |