.TH "std::once_flag" 3cxx "Sun Jan 10 2021" "libstdc++" \" -*- nroff -*-
.ad l
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.SH NAME
std::once_flag \- Flag type used by std::call_once\&.  

.SH SYNOPSIS
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.PP
.SS "Public Member Functions"

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.RI "constexpr \fBonce_flag\fP () noexcept=default"
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.RI "Constructor\&. "
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.RI "\fBonce_flag\fP (const \fBonce_flag\fP &)=delete"
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.RI "Deleted copy constructor\&. "
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.RI "\fBonce_flag\fP & \fBoperator=\fP (const \fBonce_flag\fP &)=delete"
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.RI "Deleted assignment operator\&. "
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.SS "Friends"

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.RI "template<typename _Callable , typename\&.\&.\&. _Args> void \fBcall_once\fP (\fBonce_flag\fP &__once, _Callable &&__f, _Args &&\&.\&.\&. __args)"
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.RI "Invoke a callable and synchronize with other calls using the same flag\&. "
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.SH "Detailed Description"
.PP 
Flag type used by std::call_once\&. 
.PP
Definition at line 672 of file mutex\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for libstdc++ from the source code\&.