1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 test03.cpp -- 23 24 Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 25 26 *****************************************************************************/ 27 28/***************************************************************************** 29 30 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 31 changes you are making here. 32 33 Name, Affiliation, Date: 34 Description of Modification: 35 36 *****************************************************************************/ 37 38// test of sc_fifo ports - interface access shortcut methods 39 40#include "systemc.h" 41 42SC_MODULE( writer ) 43{ 44 // port(s) 45 sc_fifo_out<int> out; 46 47 // process(es) 48 void main_action() 49 { 50 int val = 0; 51 while( true ) { 52 wait( 10, SC_NS ); // wait for 10 ns 53 cout << "writer: blocking write\n"; 54 for( int i = 0; i < 20; i ++ ) { 55 out.write( val ++ ); // blocking write 56 } 57 wait( 10, SC_NS ); 58 cout << "writer: " << out.num_free() << " free spaces\n"; 59 cout << "writer: non-blocking write\n"; 60 for( int i = 0; i < 20; i ++ ) { 61 while( ! out.nb_write( val ++ ) ) { // non-blocking write 62 cout << "writer: waiting\n"; 63 wait( 1, SC_NS ); 64 } 65 } 66 } 67 } 68 69 SC_CTOR( writer ) 70 { 71 SC_THREAD( main_action ); 72 } 73}; 74 75SC_MODULE( reader ) 76{ 77 // port(s) 78 sc_fifo_in<int> in; 79 80 // process(es) 81 void main_action() 82 { 83 int val; 84 while( true ) { 85 wait( 10, SC_NS ); // wait for 10 ns 86 cout << "reader: blocking read 1\n"; 87 for( int i = 0; i < 15; i ++ ) { 88 in.read( val ); // blocking read 89 cout << val << endl; 90 } 91 wait( 10, SC_NS ); 92 cout << "reader: " << in.num_available() << " available samples\n"; 93 cout << "reader: blocking read 2\n"; 94 for( int i = 0; i < 15; i ++ ) { 95 cout << in.read() << endl; // blocking read 96 } 97 wait( 10, SC_NS ); 98 cout << "reader: " << in.num_available() << " available samples\n"; 99 cout << "reader: non-blocking read\n"; 100 for( int i = 0; i < 15; i ++ ) { 101 while( ! in.nb_read( val ) ) { // non-blocking read 102 cout << "reader: waiting\n"; 103 wait( 1, SC_NS ); 104 } 105 cout << val << endl; 106 } 107 } 108 } 109 110 SC_CTOR( reader ) 111 { 112 SC_THREAD( main_action ); 113 } 114}; 115 116int sc_main( int, char*[] ) 117{ 118 // sc_clock c; 119 120 // declare channel(s) 121 sc_fifo<int> fifo( 10 ); 122 123 // instantiate block(s) and connect to channel(s) 124 writer w( "writer" ); 125 reader r( "reader" ); 126 127 w.out( fifo ); 128 r.in( fifo ); 129 130 // run the simulation 131 sc_start( 100, SC_NS ); 132 133 return 0; 134} 135