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 test05.cpp -- 23 24 Original Author: Martin Janssen, Synopsys, Inc., 2002-03-23 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 event finders 39 40#include "systemc.h" 41 42#define W_INFO(msg) \ 43 cout << sc_time_stamp() << "," << sc_delta_count() \ 44 << ": writer: " << msg << endl; 45 46#define R_INFO(msg) \ 47 cout << sc_time_stamp() << "," << sc_delta_count() \ 48 << ": reader: " << msg << endl; 49 50SC_MODULE( writer ) 51{ 52 // port(s) 53 sc_fifo_out<int> out; 54 55 // process(es) 56 void main_action() 57 { 58 int val = 0; 59 while( true ) { 60 wait( 10, SC_NS ); // wait for 10 ns 61 W_INFO( "blocking write" ); 62 for( int i = 0; i < 20; i ++ ) { 63 out.write( val ++ ); // blocking write 64 } 65 wait( 10, SC_NS ); 66 W_INFO( out.num_free() << " free spaces" ); 67 W_INFO( "non-blocking write" ); 68 for( int i = 0; i < 20; i ++ ) { 69 while( ! out.nb_write( val ++ ) ) { // non-blocking write 70 W_INFO( "waiting" ); 71 wait(); 72 W_INFO( "data read event" ); 73 } 74 } 75 } 76 } 77 78 SC_CTOR( writer ) 79 { 80 SC_THREAD( main_action ); 81 sensitive << out.data_read(); 82 } 83}; 84 85SC_MODULE( reader ) 86{ 87 // port(s) 88 sc_fifo_in<int> in; 89 90 // process(es) 91 void main_action() 92 { 93 int val; 94 while( true ) { 95 wait( 10, SC_NS ); // wait for 10 ns 96 R_INFO( "blocking read 1" ); 97 for( int i = 0; i < 15; i ++ ) { 98 in.read( val ); // blocking read 99 R_INFO( val ); 100 } 101 wait( 10, SC_NS ); 102 R_INFO( in.num_available() << " available samples" ); 103 R_INFO( "blocking read 2" ); 104 for( int i = 0; i < 15; i ++ ) { 105 val = in.read(); // blocking read 106 R_INFO( val ); 107 } 108 wait( 10, SC_NS ); 109 R_INFO( in.num_available() << " available samples" ); 110 R_INFO( "non-blocking read" ); 111 for( int i = 0; i < 15; i ++ ) { 112 while( ! in.nb_read( val ) ) { // non-blocking read 113 R_INFO( "waiting" ); 114 wait(); 115 R_INFO( "data written event" ); 116 } 117 R_INFO( val ); 118 } 119 } 120 } 121 122 SC_CTOR( reader ) 123 { 124 SC_THREAD( main_action ); 125 sensitive << in.data_written(); 126 } 127}; 128 129int sc_main( int, char*[] ) 130{ 131 // sc_clock c; 132 133 // declare channel(s) 134 sc_fifo<int> fifo( 10 ); 135 136 // instantiate block(s) and connect to channel(s) 137 writer w( "writer" ); 138 reader r( "reader" ); 139 140 w.out( fifo ); 141 r.in( fifo ); 142 143 // run the simulation 144 sc_start( 100, SC_NS ); 145 146 return 0; 147} 148