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authorRoland McGrath <roland@gnu.org>1995-01-16 22:34:21 +0000
committerRoland McGrath <roland@gnu.org>1995-01-16 22:34:21 +0000
commitdbe0932cb94bb5a11702b0d7f423b3d0f04f8ff6 (patch)
tree271b824e465a590d3af6a6e4298b399714865fd9 /hurd
parent781e1bb2a1b19e0d51396774129f4a35dba534b0 (diff)
(io_select): Remove RETURN_PORT arg; make ID_TAG inout.
Diffstat (limited to 'hurd')
-rw-r--r--hurd/io.defs16
1 files changed, 7 insertions, 9 deletions
diff --git a/hurd/io.defs b/hurd/io.defs
index d8a13839..093b424d 100644
--- a/hurd/io.defs
+++ b/hurd/io.defs
@@ -1,5 +1,5 @@
/* Definitions for generic IO interface
- Copyright (C) 1991, 1993, 1994 Free Software Foundation
+ Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation
This file is part of the GNU Hurd.
@@ -144,18 +144,16 @@ routine io_get_icky_async_id (
RPT
out icky_async_id_port: mach_port_send_t);
-/* Select_type is the or of SELECT_READ, SELECT_WRITE, and SELECT_URG.
- If any of the requested types of IO are immediately possible, the
- appropriate types are set in SELECT_RESULT, and RETURN_PORT is
- destroyed. If IO is not immediately possible, SELECT_RESULT is zero,
- and an io_select_done call (see msg.defs) will be sent to RETURN_PORT
- when IO becomes possible. RETURN_PORT should be a send-once right. */
+/* SELECT_TYPE is the bitwise OR of SELECT_READ, SELECT_WRITE, and SELECT_URG.
+ Block until one of the indicated types of i/o can be done "quickly".
+ ID_TAG is returned as passed; it is just for the convenience of the user in
+ matching up reply messages with specific requests it sent. */
+/* INTR */
routine io_select (
io_object: io_t;
RPT
select_type: int;
- return_port: mach_port_poly_t;
- id_tag: int;
+ inout id_tag: int; /* Returned as passed. */
out select_result: int);
/* Return the current status of the object. Not all the fields of the