Created by: chenwhql

Chinese

经过之前对C++报错信息栈的简化，去掉了提示效用比较差的函数地址，代码偏移等信息，但是由于boost::variant的函数参数过多，C++信息栈中还是会出现很长的函数名，占据大片的内容，但是这些冗余的参数事实上是没有有效信息的，例如

3 paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&, paddle::framework::RuntimeContext*) const

这行报错信息中，有效的只有以下内容，剩余的boost::detail::variant::void_,均不必显示

3 paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace> const&, paddle::framework::RuntimeContext*) const

因此该PR通过将Place设计为继承boost::variant<CUDAPlace, CPUPlace, CUDAPinnedPlace>的类，简化由于Place参数过长导致的C++信息栈信息密度低，阅读体验差的问题

正则表达式替换字符串在多平台上可能有风险，这种解决方法最安全 主要就是Place参数导致的信息冗长，没必要删除其他参数的前缀了

English

The PR make Place class inherit boost::variant<CUDAPlace, CPUPlace, CUDAPinnedPlace>, simplifying the low information density of the C++ message stack due to excessive Place parameters and poor reading experience.

C++ stack change Example

Original

0 std::cxx11::basic_string<char, std::char_traits, std::allocator > paddle::platform::GetTraceBackString<std::cxx11::basic_string<char, std::char_traits, std::allocator > >(std::cxx11::basic_string<char, std::char_traits, std::allocator >&&, char const*, int) 1 paddle::platform::EnforceNotMet::EnforceNotMet(std::cxx11::basic_string<char, std::char_traits, std::allocator > const&, char const*, int) 2 paddle::operators::MulOp::InferShape(paddle::framework::InferShapeContext*) const 3 paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&, paddle::framework::RuntimeContext*) const 4 paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&) const 5 paddle::framework::OperatorBase::Run(paddle::framework::Scope const&, boost::variant<paddle::platform::CUDAPlace, paddle::platform::CPUPlace, paddle::platform::CUDAPinnedPlace, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_, boost::detail::variant::void_> const&) 6 paddle::framework::Executor::RunPreparedContext(paddle::framework::ExecutorPrepareContext*, paddle::framework::Scope*, bool, bool, bool) 7 paddle::framework::Executor::Run(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool, std::vector<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, std::allocator<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > > const&, bool)

New

0 std::__cxx11::basic_string<char, std::char_traits, std::allocator > paddle::platform::GetTraceBackString<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >(std::__cxx11::basic_string<char, std::char_traits, std::allocator >&&, char const*, int) 1 paddle::platform::EnforceNotMet::EnforceNotMet(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, char const*, int) 2 paddle::operators::MulOp::InferShape(paddle::framework::InferShapeContext*) const 3 paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, paddle::platform::Place const&, paddle::framework::RuntimeContext*) const 4 paddle::framework::OperatorWithKernel::RunImpl(paddle::framework::Scope const&, paddle::platform::Place const&) const 5 paddle::framework::OperatorBase::Run(paddle::framework::Scope const&, paddle::platform::Place const&) 6 paddle::framework::Executor::RunPreparedContext(paddle::framework::ExecutorPrepareContext*, paddle::framework::Scope*, bool, bool, bool) 7 paddle::framework::Executor::Run(paddle::framework::ProgramDesc const&, paddle::framework::Scope*, int, bool, bool, std::vector<std::__cxx11::basic_string<char, std::char_traits, std::allocator >, std::allocator<std::__cxx11::basic_string<char, std::char_traits, std::allocator > > > const&, bool)