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A convenience bundle of precondition, data and where for reading into a T as specified by its to_asio_buffers() overload. Data MUST stay around until the operation completes.
struct io_req< void > : public detail::io_req_impl< false > { future precondition; // A precondition containing an open file handle for this operation. std::vector< asio::mutable_buffer > buffers; // A sequence of mutable Boost.ASIO buffers to read into. off_t where; // The offset from which to read. };
Function |
Description |
Parameters |
Returns |
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bool validate() |
Validates contents for correctness. |
True if contents are correct |
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io_req() |
Default constructor. |
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io_req(const io_req & o) |
Copy constructor. |
const io_req &: o: |
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io_req(io_req && o) |
Move constructor. |
io_req &&: o: |
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io_req & operator=(const io_req & o) |
Copy assignment. |
const io_req &: o: |
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io_req & operator=(io_req && o) |
Move assignment. |
io_req &&: o: |
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io_req(future<> _precondition, void * v, size_t _length, off_t _where) |
Constructs an instance. |
future<>: _precondition: An optional precondition for this operation void *: v: A pointer to memory or reference to object into which to read or write size_t: _length: The number of items to transfer off_t: _where: The offset at which to transfer |
#include <boost/afio/v2/afio.hpp>