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/*****************************************************************************
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.
*****************************************************************************/
/*****************************************************************************
wait.cpp --
Original Author: Daniel Aarno, Intel, Corp 2015-07-23
*****************************************************************************/
/*****************************************************************************
MODIFICATION LOG - modifiers, enter your name, affiliation, date and
changes you are making here.
Name, Affiliation, Date:
Description of Modification:
*****************************************************************************/
#include <systemc>
using sc_core::sc_time;
using sc_core::SC_US;
namespace {
int first_line = 0;
bool endsWith(const std::string &str, const std::string &ending) {
if (ending.size() > str.size()) {
return false;
}
return std::equal(ending.rbegin(), ending.rend(), str.rbegin());
}
bool waitFunIsTrue() {
if (sc_core::sc_time_stamp() < sc_time(2000, SC_US)) {
return false;
}
if (sc_core::sc_time_stamp() < sc_time(3000, SC_US)) {
sc_time delay(10, SC_US);
SC_WAITN(delay);
return false;
}
if (sc_core::sc_time_stamp() < sc_time(4000, SC_US)) {
return false;
}
return true;
}
SC_MODULE(Wait) {
SC_CTOR(Wait) : clk( "clk", 10, SC_US, 0.5, 100, SC_US) {
SC_THREAD(thread);
sensitive << clk;
}
void thread() {
sc_time delay(10, SC_US);
wait(delay); // 1st
first_line = __LINE__ + 1;
SC_WAITN(delay); // Wait some time
wait(delay); // 2nd
SC_WAIT(); // Wait for clk
wait(delay); // 3rd
SC_WAIT_UNTIL(sc_core::sc_time_stamp() > sc_time(1000, SC_US));
wait(delay); // 4th
SC_WAIT_UNTIL(waitFunIsTrue());
}
sc_core::sc_clock clk;
};
} // namespace
int sc_main(int argc, char ** argv) {
Wait w("dut");
sc_core::sc_process_handle hnd( sc_core::sc_find_object("dut.thread") );
const sc_core::sc_process_b *thread
= dynamic_cast<sc_core::sc_process_b*>(hnd.get_process_object());
sc_assert(hnd.valid() && thread);
sc_assert(thread->file == NULL); // 1st wait(delay)
sc_assert(thread->lineno == 0);
sc_core::sc_start(sc_time(15, SC_US));
int lineno = first_line;
sc_assert(endsWith(thread->file, "wait.cpp")); // SC_WAITN
sc_assert(thread->lineno == lineno);
sc_core::sc_start(sc_time(10, SC_US));
sc_assert(thread->file == NULL); // 2nd wait(delay)
sc_assert(thread->lineno == 0);
sc_core::sc_start(sc_time(10, SC_US));
lineno += 3;
sc_assert(endsWith(thread->file, "wait.cpp")); // SC_WAIT
sc_assert(thread->lineno == lineno);
sc_core::sc_start(sc_time(70, SC_US));
sc_assert(thread->file == NULL); // 3rd wait(delay)
sc_assert(thread->lineno == 0);
sc_core::sc_start(sc_time(10, SC_US));
lineno += 3;
sc_assert(endsWith(thread->file, "wait.cpp")); // SC_WAIT_UNTIL
sc_assert(thread->lineno == lineno);
sc_core::sc_start(sc_time(900, SC_US));
sc_assert(thread->file == NULL); // 4th wait(delay)
sc_assert(thread->lineno == 0);
// Ensure that SC_WAIT_UNTIL can handle nested wait calls
sc_core::sc_start(sc_time(10, SC_US));
lineno += 3;
sc_assert(endsWith(thread->file, "wait.cpp")); // 2nd SC_WAIT_UNTIL
sc_assert(thread->lineno == lineno);
sc_core::sc_start(sc_time(980, SC_US)); // time should be 2005
sc_assert(endsWith(thread->file, "wait.cpp")); // SC_WAITN in waitFunIsTrue
sc_assert(thread->lineno == 60);
sc_core::sc_start(sc_time(95, SC_US));
sc_assert(endsWith(thread->file, "wait.cpp"));
sc_assert(thread->lineno == 60);
sc_core::sc_start(sc_time(910, SC_US));
sc_assert(endsWith(thread->file, "wait.cpp")); // 2nd SC_WAIT_UNTIL
sc_assert(thread->lineno == lineno);
sc_core::sc_start(sc_time(1000, SC_US));
sc_assert(thread->file == NULL); // done
sc_assert(thread->lineno == 0);
return 0;
}
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