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- /*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- #include <mach/port.h>
- #include <mach/message.h>
-
- mach_msg_return_t
- __mach_msg (mach_msg_header_t *msg,
- mach_msg_option_t option,
- mach_msg_size_t send_size,
- mach_msg_size_t rcv_size,
- mach_port_t rcv_name,
- mach_msg_timeout_t timeout,
- mach_port_t notify)
- {
- mach_msg_return_t ret;
-
- /* Consider the following cases:
- 1. Errors in pseudo-receive (eg, MACH_SEND_INTERRUPTED
- plus special bits).
- 2. Use of MACH_SEND_INTERRUPT/MACH_RCV_INTERRUPT options.
- 3. RPC calls with interruptions in one/both halves.
- */
-
- ret = __mach_msg_trap (msg, option, send_size,
- rcv_size, rcv_name, timeout, notify);
- if (ret == MACH_MSG_SUCCESS)
- return MACH_MSG_SUCCESS;
-
- if (!(option & MACH_SEND_INTERRUPT))
- while (ret == MACH_SEND_INTERRUPTED)
- ret = __mach_msg_trap (msg, option, send_size,
- rcv_size, rcv_name, timeout, notify);
-
- if (!(option & MACH_RCV_INTERRUPT))
- while (ret == MACH_RCV_INTERRUPTED)
- ret = __mach_msg_trap (msg, option & ~MACH_SEND_MSG,
- 0, rcv_size, rcv_name, timeout, notify);
-
- return ret;
- }
-
- mach_msg_return_t
- __mach_msg_send (mach_msg_header_t *msg)
- {
- return __mach_msg (msg, MACH_SEND_MSG,
- msg->msgh_size, 0, MACH_PORT_NULL,
- MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
- }
-
- mach_msg_return_t
- __mach_msg_receive (mach_msg_header_t *msg)
- {
- return __mach_msg (msg, MACH_RCV_MSG,
- 0, msg->msgh_size, msg->msgh_local_port,
- MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
- }
-