Attributes

Class attributes is used to transfers parameters required to setup a coroutines's context.

struct attributes
{
    std::size_t     size;
    flag_unwind_t   do_unwind;
    flag_fpu_t      preserve_fpu;

    attributes() BOOST_NOEXCEPT;

    explicit attributes( std::size_t size_) BOOST_NOEXCEPT;

    explicit attributes( flag_unwind_t do_unwind_) BOOST_NOEXCEPT;

    explicit attributes( flag_fpu_t preserve_fpu_) BOOST_NOEXCEPT;

    explicit attributes( std::size_t size_, flag_unwind_t do_unwind_) BOOST_NOEXCEPT;

    explicit attributes( std::size_t size_, flag_fpu_t preserve_fpu_) BOOST_NOEXCEPT;

    explicit attributes( flag_unwind_t do_unwind_, flag_fpu_t preserve_fpu_) BOOST_NOEXCEPT;
};

`attributes()`

Effects:: Default constructor using ctx::default_stacksize(), does unwind the stack after coroutine/generator is complete and preserves FPU registers.
Throws:: Nothing.

`attributes( std::size_t size)`

Effects:: Argument size defines stack size of the inner context. Stack unwinding after termination and preserving FPU registers is set by default.
Throws:: Nothing.

`attributes( flag_unwind_t do_unwind)`

Effects:: Argument do_unwind determines if stack will be unwound after termination or not. The default stacksize is used for the inner context and FPU registers are preserved.
Throws:: Nothing.

`attributes( flag_fpu_t preserve_fpu)`

Effects:: Argument preserve_fpu determines if FPU register have to be preserved if a context switches. THe default stacksize is used for the inner context and the stack will be unwound after termination.
Throws:: Nothing.

`attributes( std::size_t size, flag_unwind_t do_unwind)`

Effects:: Arguments size and do_unwind are given by the user. FPU registers preserved during each context switch.
Throws:: Nothing.

`attributes( std::size_t size, flag_fpu_t preserve_fpu)`

Effects:: Arguments size and preserve_fpu are given by the user. The stack is automatically unwound after coroutine/generator terminates.
Throws:: Nothing.

`attributes( flag_unwind_t do_unwind, flag_fpu_t preserve_fpu)`

Effects:: Arguments do_unwind and preserve_fpu are given by the user. The stack gets a default value of ctx::default_stacksize().
Throws:: Nothing.