std::execution::upon_error

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Execution control library

Execution concepts

scheduler
receiver
receiver_of
operation_state

sender
sender_in
sender_to

Forward progress guarantee

forward_progress_guarantee

std::forwarding_query

get_scheduler

get_domain

get_forward_progress_guarantee

get_delegation_scheduler

get_completion_scheduler

Completion signatures

completion_signatures

completion_signatures_of_t

transform_completion_signatures

transform_completion_signatures_of

value_types_of_t
error_types_of_t

tag_of_t
sends_stopped

Sender adaptor closures

sender_adaptor_closure

Coroutine utility

as_awaitable

with_awaitable_senders

Core operations

Operation state

connect
connect_result_t

schedule
schedule_result_t

Sender adaptors

starts_on
continues_on
on
then
upon_error
upon_stopped
let_value
let_error
let_stopped
schedule_from
when_all

when_all_with_variant
into_variant
stopped_as_optional
stopped_as_error
bulk
split

Sender consumers

this_thread::sync_wait

this_thread::sync_wait_with_variant

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Defined in header`<execution>`
execution::senderauto upon_error( execution::senderauto input, std::invocable</errors-sent-by/(input)...> function);		(since C++26)

[edit]Parameters

input	-	sender which once an error occurs, sends the errors to the function
function	-	invocable to be called with errors in case an error occurs by input sender

[edit]Return value

Returns a sender describing the task graph described by the input sender, with an added node of invoking the provided function with the errors sent by the input sender as arguments (in case of an error).