-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * 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>
-
-#define LIBMACH_OPTIONS (MACH_SEND_INTERRUPT|MACH_RCV_INTERRUPT)
-
-mach_msg_return_t
-mach_msg(msg, option, send_size, rcv_size, rcv_name, timeout, notify)
- 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 mr;
-
- /*
- * 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.
- *
- * We refrain from passing the option bits that we implement
- * to the kernel. This prevents their presence from inhibiting
- * the kernel's fast paths (when it checks the option value).
- */
-
- mr = mach_msg_overwrite_trap(msg, option &~ LIBMACH_OPTIONS,
- send_size, rcv_size, rcv_name,
- timeout, notify, MACH_MSG_NULL, 0);
- if (mr == MACH_MSG_SUCCESS)
- return MACH_MSG_SUCCESS;
-
- if ((option & MACH_SEND_INTERRUPT) == 0)
- while (mr == MACH_SEND_INTERRUPTED)
- mr = mach_msg_overwrite_trap(msg,
- option &~ LIBMACH_OPTIONS,
- send_size, rcv_size, rcv_name,
- timeout, notify, MACH_MSG_NULL, 0);
-
- if ((option & MACH_RCV_INTERRUPT) == 0)
- while (mr == MACH_RCV_INTERRUPTED)
- mr = mach_msg_overwrite_trap(msg,
- option &~ (LIBMACH_OPTIONS|MACH_SEND_MSG),
- 0, rcv_size, rcv_name,
- timeout, notify, MACH_MSG_NULL, 0);
-
- return mr;
-}
-
-mach_msg_return_t
-mach_msg_overwrite(msg, option, send_size, rcv_limit, rcv_name, timeout,
- notify, rcv_msg, rcv_msg_size)
- mach_msg_header_t *msg;
- mach_msg_option_t option;
- mach_msg_size_t send_size;
- mach_msg_size_t rcv_limit;
- mach_port_t rcv_name;
- mach_msg_timeout_t timeout;
- mach_port_t notify;
- mach_msg_header_t *rcv_msg;
- mach_msg_size_t rcv_msg_size;
-{
- mach_msg_return_t mr;
-
- /*
- * 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.
- *
- * We refrain from passing the option bits that we implement
- * to the kernel. This prevents their presence from inhibiting
- * the kernel's fast paths (when it checks the option value).
- */
-
- mr = mach_msg_overwrite_trap(msg, option &~ LIBMACH_OPTIONS,
- send_size, rcv_limit, rcv_name,
- timeout, notify, rcv_msg, rcv_msg_size);
- if (mr == MACH_MSG_SUCCESS)
- return MACH_MSG_SUCCESS;
-
- if ((option & MACH_SEND_INTERRUPT) == 0)
- while (mr == MACH_SEND_INTERRUPTED)
- mr = mach_msg_overwrite_trap(msg,
- option &~ LIBMACH_OPTIONS,
- send_size, rcv_limit, rcv_name,
- timeout, notify, rcv_msg, rcv_msg_size);
-
- if ((option & MACH_RCV_INTERRUPT) == 0)
- while (mr == MACH_RCV_INTERRUPTED)
- mr = mach_msg_overwrite_trap(msg,
- option &~ (LIBMACH_OPTIONS|MACH_SEND_MSG),
- 0, rcv_limit, rcv_name,
- timeout, notify, rcv_msg, rcv_msg_size);
-
- return mr;
-}
projects / apple / libc.git / blobdiff