git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 RM |
1 | /* |
| 2 | * Mach Operating System | |
| 3 | * Copyright (c) 1991,1990,1989, 1995 Carnegie Mellon University | |
| 4 | * All Rights Reserved. | |
| 5 | * | |
| 6 | * Permission to use, copy, modify and distribute this software and its | |
| 7 | * documentation is hereby granted, provided that both the copyright | |
| 8 | * notice and this permission notice appear in all copies of the | |
| 9 | * software, derivative works or modified versions, and any portions | |
| 10 | * thereof, and that both notices appear in supporting documentation. | |
| 11 | * | |
| 12 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 13 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 14 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 15 | * | |
| 16 | * Carnegie Mellon requests users of this software to return to | |
| 17 | * | |
| 18 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 19 | * School of Computer Science | |
| 20 | * Carnegie Mellon University | |
| 21 | * Pittsburgh PA 15213-3890 | |
| 22 | * | |
| 23 | * any improvements or extensions that they make and grant Carnegie Mellon | |
| 24 | * the rights to redistribute these changes. | |
| 25 | */ | |
| 26 | #include <mach/port.h> | |
| 27 | #include <mach/message.h> | |
| 28 | ||
| 29 | mach_msg_return_t | |
| 30 | __mach_msg (mach_msg_header_t *msg, | |
| 31 | mach_msg_option_t option, | |
| 32 | mach_msg_size_t send_size, | |
| 33 | mach_msg_size_t rcv_size, | |
| 34 | mach_port_t rcv_name, | |
| 35 | mach_msg_timeout_t timeout, | |
| 36 | mach_port_t notify) | |
| 37 | { | |
| 38 | mach_msg_return_t ret; | |
| 39 | ||
| 40 | /* Consider the following cases: | |
| 41 | 1. Errors in pseudo-receive (eg, MACH_SEND_INTERRUPTED | |
| 42 | plus special bits). | |
| 43 | 2. Use of MACH_SEND_INTERRUPT/MACH_RCV_INTERRUPT options. | |
| 44 | 3. RPC calls with interruptions in one/both halves. | |
| 45 | */ | |
| 46 | ||
| 47 | ret = __mach_msg_trap (msg, option, send_size, | |
| 48 | rcv_size, rcv_name, timeout, notify); | |
| 49 | if (ret == MACH_MSG_SUCCESS) | |
| 50 | return MACH_MSG_SUCCESS; | |
| 51 | ||
| 52 | if (!(option & MACH_SEND_INTERRUPT)) | |
| 53 | while (ret == MACH_SEND_INTERRUPTED) | |
| 54 | ret = __mach_msg_trap (msg, option, send_size, | |
| 55 | rcv_size, rcv_name, timeout, notify); | |
| 56 | ||
| 57 | if (!(option & MACH_RCV_INTERRUPT)) | |
| 58 | while (ret == MACH_RCV_INTERRUPTED) | |
| 59 | ret = __mach_msg_trap (msg, option & ~MACH_SEND_MSG, | |
| 60 | 0, rcv_size, rcv_name, timeout, notify); | |
| 61 | ||
| 62 | return ret; | |
| 63 | } | |
| 64 | weak_alias (__mach_msg, mach_msg) | |
| 65 | ||
| 66 | mach_msg_return_t | |
| 67 | __mach_msg_send (mach_msg_header_t *msg) | |
| 68 | { | |
| 69 | return __mach_msg (msg, MACH_SEND_MSG, | |
| 70 | msg->msgh_size, 0, MACH_PORT_NULL, | |
| 71 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
| 72 | } | |
| 73 | weak_alias (__mach_msg_send, mach_msg_send) | |
| 74 | ||
| 75 | mach_msg_return_t | |
| 76 | __mach_msg_receive (mach_msg_header_t *msg) | |
| 77 | { | |
| 78 | return __mach_msg (msg, MACH_RCV_MSG, | |
| 79 | 0, msg->msgh_size, msg->msgh_local_port, | |
| 80 | MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL); | |
| 81 | } | |
| 82 | weak_alias (__mach_msg_receive, mach_msg_receive) |