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FDStream.cc
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FDStream.cc
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#include <elle/assert.hh>
#include <elle/Buffer.hh>
#include <elle/reactor/FDStream.hh>
#include <elle/reactor/scheduler.hh>
namespace elle
{
namespace reactor
{
FDStream::StreamBuffer::StreamBuffer(boost::asio::io_service& service,
Handle handle)
: _stream(service, handle)
, _handle(handle)
{}
elle::PlainStreamBuffer::Size
FDStream::StreamBuffer::read(char* buffer, elle::PlainStreamBuffer::Size size)
{
Buffer::Size read = 0;
boost::system::error_code error;
reactor::Barrier done("read done");
this->_stream.async_read_some(
boost::asio::buffer(buffer, size),
[&] (boost::system::error_code const& e, std::size_t s)
{
if (e && e == boost::asio::error::operation_aborted)
return;
error = e;
read = s;
done.open();
});
reactor::wait(done);
if (error && error != boost::asio::error::eof)
throw elle::Error(
elle::sprintf("unable to read from %s: %s",
this->_handle, error.message()));
else
return read;
}
void
FDStream::StreamBuffer::write(char* buffer, Size size)
{
elle::unreachable();
}
FDStream::FDStream(boost::asio::io_service& service, Handle handle)
: elle::IOStream(new StreamBuffer(service, handle))
{}
FDStream::FDStream(Handle handle)
: FDStream(reactor::scheduler().io_service(), handle)
{}
}
}