55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
|
#pragma once
|
||
|
|
|
||
|
|
namespace unwinder { namespace detail {
|
||
|
|
|
||
|
|
template<typename Function>
|
||
|
|
class unwinder
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
~unwinder() noexcept
|
||
|
|
{
|
||
|
|
if (!!function)
|
||
|
|
{
|
||
|
|
(*function)();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
explicit unwinder(Function* functionArg)
|
||
|
|
: function(functionArg)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void dismiss()
|
||
|
|
{
|
||
|
|
function = nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
unwinder& operator=(nullptr_t) {
|
||
|
|
dismiss();
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
unwinder();
|
||
|
|
unwinder(const unwinder&);
|
||
|
|
unwinder& operator=(const unwinder&);
|
||
|
|
|
||
|
|
Function* function;
|
||
|
|
};
|
||
|
|
} }
|
||
|
|
|
||
|
|
#define UNWIND_MAKE_IDENTIFIER_EXPLICIT_PASTER(Prefix, Suffix) Prefix ## Suffix
|
||
|
|
#define UNWIND_MAKE_IDENTIFIER_EXPLICIT(Prefix, Suffix) UNWIND_MAKE_IDENTIFIER_EXPLICIT_PASTER(Prefix, Suffix)
|
||
|
|
|
||
|
|
#define UNWIND_MAKE_IDENTIFIER(Prefix) UNWIND_MAKE_IDENTIFIER_EXPLICIT(Prefix, __LINE__)
|
||
|
|
|
||
|
|
#define ON_UNWIND(Name, Function) \
|
||
|
|
ON_UNWIND_EXPLICIT(uwfunc_ ## Name, Name, Function)
|
||
|
|
|
||
|
|
#define ON_UNWIND_AUTO(Function) \
|
||
|
|
ON_UNWIND_EXPLICIT(UNWIND_MAKE_IDENTIFIER(uwfunc_), UNWIND_MAKE_IDENTIFIER(unwind_), Function)
|
||
|
|
|
||
|
|
#define ON_UNWIND_EXPLICIT(FunctionName, UnwinderName, Function) \
|
||
|
|
auto FunctionName = (Function); \
|
||
|
|
::unwinder::detail::unwinder<decltype(FunctionName)> UnwinderName(std::addressof(FunctionName))
|