在编译时自动用注释包装C/ c++函数
Automatically wrap C/C++ function at compile-time with annotation
在我的C/c++代码中,我想注释不同的函数和方法,以便在编译时(或链接时)添加额外的代码。添加的包装代码应该能够检查上下文(被调用的函数,线程信息等),读/写输入变量,修改返回值和输出变量。
我如何用GCC和/或Clang做到这一点?
看一下GCC中的检测函数。From man gcc
:
-finstrument-functions
Generate instrumentation calls for entry and exit to functions. Just after function entry and just before function exit, the following profiling functions will be called with the address of the current function and its call site. (On some platforms,
"__builtin_return_address" does not work beyond the current function, so the call site information may not be available to the profiling functions otherwise.)
void __cyg_profile_func_enter (void *this_fn,
void *call_site);
void __cyg_profile_func_exit (void *this_fn,
void *call_site);
The first argument is the address of the start of the current function, which may be looked up exactly in the symbol table.
This instrumentation is also done for functions expanded inline in other functions. The profiling calls will indicate where, conceptually, the inline function is entered and exited. This means that addressable versions of such functions must be available. If
all your uses of a function are expanded inline, this may mean an additional expansion of code size. If you use extern inline in your C code, an addressable version of such functions must be provided. (This is normally the case anyways, but if you get lucky
and the optimizer always expands the functions inline, you might have gotten away without providing static copies.)
A function may be given the attribute "no_instrument_function", in which case this instrumentation will not be done. This can be used, for example, for the profiling functions listed above, high-priority interrupt routines, and any functions from which the
profiling functions cannot safely be called (perhaps signal handlers, if the profiling routines generate output or allocate memory).
相关文章:
- 如何在c++17中制作一个模板包装器/装饰器
- std::vector的包装器,使数组的结构看起来像结构的数组
- 如何在c++迭代器类型中包装std::chrono
- 是否可以用"iostream"包装现有的TCP/OOpenSSL会话
- 用pybind11包装C++抽象类时出错
- 为左值和右值的包装器实现C++范围
- C结构,其指针将被包装在unique_ptr中
- 如何包装第三方DLL在R中使用
- 在类型和包装器之间reinterpret_cast是否安全<Type>?
- 将 N-arg 函数包装到另一个函数中
- 元组由 Swig 生成的 Python 包装器返回,用于C++向量
- 包装一个对象并假装它是一个 int
- 使用 Python Extension API 包装复杂C++类
- 外壳包装器句柄/执行交互式命令管道C++ UNIX
- 包装C++类时不完整的类型 GLFWwindow
- 将函数包装器转换为 std::function
- C++函数包装器来捕获某些信号
- 创建包装升压适配器的自定义范围类
- 如何包装(撰写)增强 hana 地图并访问括号运算符(运算符 [])?
- 使用运算符*重载包装矩阵乘法