set_once overloads

Synopses

Declared in <folly/synchronization/CallOnce.h>

Grants the free set_once access to the flag internals.

void
set_once(OnceFlag&) noexcept;

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Sets a flag, as if call_once(flag, []{}) was called.

template<typename OnceFlag>
void
set_once(OnceFlag& flag) noexcept;

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Parameters

Name

Description

flag

The once‐flag to set.

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