| /***************************************************************************** |
| |
| Licensed to Accellera Systems Initiative Inc. (Accellera) under one or |
| more contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright ownership. |
| Accellera licenses this file to you under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with the |
| License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. See the License for the specific language governing |
| permissions and limitations under the License. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| test04.cpp -- |
| |
| Original Author: Martin Janssen, Synopsys, Inc., 2002-03-23 |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| MODIFICATION LOG - modifiers, enter your name, affiliation, date and |
| changes you are making here. |
| |
| Name, Affiliation, Date: |
| Description of Modification: |
| |
| *****************************************************************************/ |
| |
| // test of sc_fifo events |
| |
| #include "systemc.h" |
| |
| #define W_INFO(msg) \ |
| cout << sc_time_stamp() << "," << sc_delta_count() \ |
| << ": writer: " << msg << endl; |
| |
| #define R_INFO(msg) \ |
| cout << sc_time_stamp() << "," << sc_delta_count() \ |
| << ": reader: " << msg << endl; |
| |
| SC_MODULE( writer ) |
| { |
| // port(s) |
| sc_fifo_out<int> out; |
| |
| // process(es) |
| void main_action() |
| { |
| int val = 0; |
| while( true ) { |
| wait( 10, SC_NS ); // wait for 10 ns |
| W_INFO( "blocking write" ); |
| for( int i = 0; i < 20; i ++ ) { |
| out.write( val ++ ); // blocking write |
| } |
| wait( 10, SC_NS ); |
| W_INFO( out.num_free() << " free spaces" ); |
| W_INFO( "non-blocking write" ); |
| for( int i = 0; i < 20; i ++ ) { |
| while( ! out.nb_write( val ++ ) ) { // non-blocking write |
| W_INFO( "waiting" ); |
| wait( out.data_read_event() ); |
| W_INFO( "data read event" ); |
| } |
| } |
| } |
| } |
| |
| SC_CTOR( writer ) |
| { |
| SC_THREAD( main_action ); |
| } |
| }; |
| |
| SC_MODULE( reader ) |
| { |
| // port(s) |
| sc_fifo_in<int> in; |
| |
| // process(es) |
| void main_action() |
| { |
| int val; |
| while( true ) { |
| wait( 10, SC_NS ); // wait for 10 ns |
| R_INFO( "blocking read 1" ); |
| for( int i = 0; i < 15; i ++ ) { |
| in.read( val ); // blocking read |
| R_INFO( val ); |
| } |
| wait( 10, SC_NS ); |
| R_INFO( in.num_available() << " available samples" ); |
| R_INFO( "blocking read 2" ); |
| for( int i = 0; i < 15; i ++ ) { |
| val = in.read(); // blocking read |
| R_INFO( val ); |
| } |
| wait( 10, SC_NS ); |
| R_INFO( in.num_available() << " available samples" ); |
| R_INFO( "non-blocking read" ); |
| for( int i = 0; i < 15; i ++ ) { |
| while( ! in.nb_read( val ) ) { // non-blocking read |
| R_INFO( "waiting" ); |
| wait( in.data_written_event() ); |
| R_INFO( "data written event" ); |
| } |
| R_INFO( val ); |
| } |
| } |
| } |
| |
| SC_CTOR( reader ) |
| { |
| SC_THREAD( main_action ); |
| } |
| }; |
| |
| int sc_main( int, char*[] ) |
| { |
| // sc_clock c; |
| |
| // declare channel(s) |
| sc_fifo<int> fifo( 10 ); |
| |
| // instantiate block(s) and connect to channel(s) |
| writer w( "writer" ); |
| reader r( "reader" ); |
| |
| w.out( fifo ); |
| r.in( fifo ); |
| |
| // run the simulation |
| sc_start( 100, SC_NS ); |
| |
| return 0; |
| } |