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d8b0539e |
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10-Aug-2016 |
Carlos Pizano <cpu@google.com> |
[kernel][magenta] Sockets (part 1)
Sockets are connected, bidirectional, waitable transports that
can move only data, and have a maximum capacity. They are
useful for stream transports, pipes, etc.
This CL only introduces the basic constructs and
the following syscalls:
sys_socket_create() : returns two handles, one for each end
of the socket. Both sides behave in the same manner.
sys_socket_read() and sys_socket_write(), to read and write
data, in byte stream form.
Unlike the message pipe and the data pipe, the socket
does not have a central object of which both sides are
just interfaces, instead both dispatchers hold the write
circular buffer and rely on the new on_zero_handles()
callback to manage the lifetime.
Change-Id: I8fbfedde399cf9a7f129370bbc26b99b33ce53fe
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