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terminal session: return number of bytes written

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To better support non-blocking terminal components, let the
'Terminal::Session::write()' function return the number of bytes
actually written.

Fixes #2240
This commit is contained in:
Christian Prochaska
2017-01-17 15:45:54 +01:00
committed by Norman Feske
parent 9f7a4feab4
commit dbb641d44a
11 changed files with 65 additions and 31 deletions
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18
repos/os/include/terminal_session/client.h
View File

@ -5,7 +5,7 @@
*/
/*
* Copyright (C) 2011-2013 Genode Labs GmbH
* Copyright (C) 2011-2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
@ -80,17 +80,21 @@ class Terminal::Session_client : public Genode::Rpc_client<Session>
while (written_bytes < num_bytes) {
/* copy payload to I/O buffer */
Genode::size_t n = Genode::min(num_bytes - written_bytes,
_io_buffer.size());
Genode::size_t payload_bytes = Genode::min(num_bytes - written_bytes,
_io_buffer.size());
Genode::memcpy(_io_buffer.local_addr<char>(),
src + written_bytes, n);
src + written_bytes, payload_bytes);
/* tell server to pick up new I/O buffer content */
call<Rpc_write>(n);
Genode::size_t written_payload_bytes = call<Rpc_write>(payload_bytes);
written_bytes += written_payload_bytes;
if (written_payload_bytes != payload_bytes)
return written_bytes;
written_bytes += n;
}
return num_bytes;
return written_bytes;
}
void connected_sigh(Genode::Signal_context_capability cap)