Resizing files

Functions
virtual std::vector< future<> >	boost::afio::dispatcher::truncate (const std::vector< future<>> &ops, const std::vector< off_t > &sizes)=0
	Schedule a batch of asynchronous file length truncations after preceding operations.
future	boost::afio::async_truncate (future<> _precondition, off_t newsize)
	Asynchronous file length truncation after a preceding operation.
void	boost::afio::truncate (future<> _precondition, off_t newsize)
	Synchronous file length truncation after a preceding operation.
void	boost::afio::truncate (error_code &_ec, future<> _precondition, off_t newsize)
	Synchronous file length truncation after a preceding operation.

---

Function Documentation

future boost::afio::dispatcher::truncate	(	const std::vector< future<>> &	ops,
		const std::vector< off_t > &	sizes
	)		[pure virtual]

Schedule a batch of asynchronous file length truncations after preceding operations.

Returns:

A batch of op handles.

Parameters:

ops	A batch of op handles.
sizes	A batch of new lengths.

Definition at line 3706 of file afio.hpp.

future boost::afio::async_truncate	(	future<>	_precondition,
		off_t	newsize
	)

Asynchronous file length truncation after a preceding operation.

Returns:

A future<void>

Parameters:

_precondition	The precondition to use.
newsize	The new size for the file.

{Amortised O(1) to dispatch. Amortised O(1) to complete if truncating file lengths is constant time.} {readwrite_example}

Definition at line 5270 of file afio.hpp.

void boost::afio::truncate	(	future<>	_precondition,
		off_t	newsize
	)

Synchronous file length truncation after a preceding operation.

Parameters:

_precondition	The precondition to use.
newsize	The new size for the file.

{distinguish, throwing} {Amortised O(1) to dispatch. Amortised O(1) to complete if truncating file lengths is constant time.} {readwrite_example}

Definition at line 5286 of file afio.hpp.

void boost::afio::truncate	(	error_code &	_ec,
		future<>	_precondition,
		off_t	newsize
	)

Synchronous file length truncation after a preceding operation.

Parameters:

_ec	Error code to set.
_precondition	The precondition to use.
newsize	The new size for the file.

{distinguish, non throwing} {Amortised O(1) to dispatch. Amortised O(1) to complete if truncating file lengths is constant time.} {readwrite_example}

Definition at line 5303 of file afio.hpp.