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The async_read_at
function is a composed asynchronous operation that reads a certain amount
of data at the specified offset.
Start an asynchronous operation to read a certain amount of data at the specified offset.
template<
typename AsyncRandomAccessReadDevice,
typename MutableBufferSequence,
typename ReadHandler = DEFAULT>
DEDUCED async_read_at(
AsyncRandomAccessReadDevice & d,
uint64_t offset,
const MutableBufferSequence & buffers,
ReadHandler && handler = DEFAULT);
» more...
template<
typename AsyncRandomAccessReadDevice,
typename MutableBufferSequence,
typename CompletionCondition,
typename ReadHandler = DEFAULT>
DEDUCED async_read_at(
AsyncRandomAccessReadDevice & d,
uint64_t offset,
const MutableBufferSequence & buffers,
CompletionCondition completion_condition,
ReadHandler && handler = DEFAULT);
» more...
template<
typename AsyncRandomAccessReadDevice,
typename Allocator,
typename ReadHandler = DEFAULT>
DEDUCED async_read_at(
AsyncRandomAccessReadDevice & d,
uint64_t offset,
basic_streambuf< Allocator > & b,
ReadHandler && handler = DEFAULT);
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template<
typename AsyncRandomAccessReadDevice,
typename Allocator,
typename CompletionCondition,
typename ReadHandler = DEFAULT>
DEDUCED async_read_at(
AsyncRandomAccessReadDevice & d,
uint64_t offset,
basic_streambuf< Allocator > & b,
CompletionCondition completion_condition,
ReadHandler && handler = DEFAULT);
» more...
Header: boost/asio/read_at.hpp
Convenience header: boost/asio.hpp