[英]How to use header file in SystemC Hello World program?
I'm migrating from C++ to SystemC, met following basic questions. 我正在从C ++迁移到SystemC,遇到了以下基本问题。 (I've searched in google, but only got examples in a single .cpp file).
(我在谷歌搜索,但只在一个.cpp文件中获得了示例)。 Thanks in advance.
提前致谢。
I know following "hello.cpp" works: 我知道以下“hello.cpp”有效:
//hello.cpp
#include "systemc.h"
SC_MODULE (hello_world) {
SC_CTOR (hello_world) {
}
void say_hello() {
cout << "Hello World.\n";
}
};
int sc_main(int argc, char* argv[]) {
hello_world hello("HELLO");
hello.say_hello();
return(0);
}
Question 1: How can I separate it into hello.h and hello.cpp? 问题1:如何将其分为hello.h和hello.cpp? Following code is in C++, I don't know how to create the equivalent SystemC code.
以下代码是用C ++编写的,我不知道如何创建等效的SystemC代码。
//hello.h
class hello_world
{
public:
hello_world();
void say_hello();
};
//hello.cpp
hello_world::hello_world()
{
}
hello_world::say_hello()
{
cout << "Hello World.\n";
}
Question 2: How to create nested class in SystemC? 问题2:如何在SystemC中创建嵌套类? Eg what is the equivalent SystemC code according to following C++?
例如,根据以下C ++,等效的SystemC代码是什么?
class foo
{
public:
int fooAttr1;
class bar
{
public:
int barAttr1;
};
};
Question 3: Where is the best place to specify an attribute/operation's scope? 问题3:指定属性/操作范围的最佳位置在哪里? (public/protected/private).
(公共/保护/私营)。
When separating out the implementation from the declarations in SystemC, you can do it the normal way as it is done in C++. 当从SystemC中的声明中分离出实现时,您可以像在C ++中那样以正常方式完成它。
But when you want a constructor with more than one argument(except the default one ie SC_CTOR
accepts the module name) you will have to define your own constructor. 但是当你想要一个带有多个参数的构造函数时(默认值除外,即
SC_CTOR
接受模块名称),你必须定义自己的构造函数。
And if the module has SystemC processes( SC_THREAD
, SC_METHOD
, SC_CTHREAD
) then you will have to use the SC_HAS_PROCESS
macro to indicate that your module has process/es. 如果模块具有SystemC进程(
SC_THREAD
, SC_METHOD
, SC_CTHREAD
),则必须使用SC_HAS_PROCESS
宏来指示您的模块具有进程/ es。
And regarding nested class it is the same thing as in C++. 关于嵌套类,它与C ++中的相同。
I am not sure what you mean by the 3rd question. 我不确定第3个问题是什么意思。
regarding your 3rd question: you can do same as you usually do in a C++ program. 关于你的第三个问题:你可以像在C ++程序中那样做。 The best place to specify an attribute/operation's scope is the declaration part of the SC_MODULE, whether you put it in cpp or header file.
指定属性/操作范围的最佳位置是SC_MODULE的声明部分,无论是将其放在cpp还是头文件中。 In a SystemC design, normally only the ports and constructor/destructor should be defined as public to allow other modules to connect with it, unless you have a strong reason and want to break the modularity of a systemc design to access explicitly the member functions of a module.
在SystemC设计中,通常只应将ports和constructor /析构函数定义为public以允许其他模块与其连接,除非您有充分的理由并希望打破systemc设计的模块性以明确访问其成员函数一个模块。
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