std::coroutine_handle<Promise>::from_address

 

C++

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Feature test macros (C++20)

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Concepts library (C++20)

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Symbols index

External libraries

 

Utilities library

Language support Type support (basic types, RTTI) Library feature-test macros (C++20) Dynamic memory management Program utilities Coroutine support (C++20) Variadic functions is_constant_evaluated (C++20) launder (C++17) initializer_list (C++11) source_location (C++20) Three-way comparison (C++20) three_way_comparablethree_way_comparable_with (C++20)(C++20) strong_ordering (C++20) weak_ordering (C++20) partial_ordering (C++20) common_comparison_category (C++20) compare_three_way_result (C++20) compare_three_way (C++20) strong_order (C++20) weak_order (C++20) partial_order (C++20) compare_strong_order_fallback (C++20) compare_weak_order_fallback (C++20) compare_partial_order_fallback (C++20)    is_eqis_neqis_ltis_lteqis_gtis_gteq (C++20)(C++20)(C++20)(C++20)(C++20)(C++20)

General utilities Date and time Function objects Formatting library (C++20) bitset hash (C++11) Relational operators (deprecated in C++20) rel_ops::operator!=rel_ops::operator> rel_ops::operator<=rel_ops::operator>= Integer comparison functions cmp_equalcmp_lesscmp_less_than (C++20)(C++20)(C++20)    cmp_not_equalcmp_greatercmp_greater_than (C++20)(C++20)(C++20) in_range (C++20) Swap and type operations swap ranges::swap (C++20) exchange (C++14) declval (C++11) to_underlying (C++23) forward (C++11) forward_like (C++23) move (C++11) move_if_noexcept (C++11) as_const (C++17) Common vocabulary types pair tuple (C++11) optional (C++17) any (C++17) variant (C++17) tuple_size (C++11) tuple_element (C++11) apply (C++17) make_from_tuple (C++17) expected (C++23) Elementary string conversions to_chars (C++17) from_chars (C++17) chars_format (C++17)

 

Coroutine support

Coroutine traits

coroutine_traits (C++20)

Coroutine handle

coroutine_handle (C++20)

No-op coroutines

noop_coroutine_promise (C++20)

noop_coroutine (C++20)

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suspend_never (C++20)

suspend_always (C++20)

 

std::coroutine_handle

Member functions

coroutine_handle::coroutine_handle (C++20)

coroutine_handle::operator= (C++20)

coroutine_handle::from_promise (C++20)

Conversion

coroutine_handle::operator coroutine_handle<> (C++20)

Observers

coroutine_handle::done (C++20)

coroutine_handle::operator bool (C++20)

Control

coroutine_handle::operator()coroutine_handle::resume (C++20)(C++20)

coroutine_handle::destroy (C++20)

Promise access

coroutine_handle::promise (C++20)

Export/import

coroutine_handle::address (C++20)

coroutine_handle::from_address (C++20)

Non-member functions

operator==operator<=> (C++20)(C++20)

Helper classes

std::hash<std::coroutine_handle> (C++20)

 

static constexpr coroutine_handle from_address( void *addr );		(since C++20)

Creates a coroutine_handle from a null pointer value or an underlying address of another coroutine_handle. The underlying address of return value is addr.

The behavior is undefined if addr is neither a null pointer value nor an underlying address of a coroutine_handle. The behavior is also undefined if the addr is an underlying address of a std::coroutine_handle<P1>, where both Promise and P1 are not void, and P1 is different from Promise.

This function is not declared for specialization std::coroutine_handle<std::noop_coroutine_promise>.

Parameters

addr

-

underlying address to import

Return values

A std::coroutine_handle<Promise> whose underlying address is addr.

Notes

If addr is not a null pointer value, it must be obtained from a prior call to address() on a coroutine_handle referring to some coroutine.

See also

(constructor) (C++20)	constructs a coroutine_handle object (public member function)
from_promise [static] (C++20)	creates a coroutine_handle from the promise object of a coroutine (public static member function)
noop_coroutine (C++20)	creates a coroutine handle that has no observable effects when resumed or destroyed (function)