projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 | 1 | /* Demux messages sent on the signal port. |
| 72e1a750 | 2 | Copyright (C) 1991,92,94,95,97,99 Free Software Foundation, Inc. |
| c84142e8 | 3 | This file is part of the GNU C Library. |
| 28f540f4 | 4 | |
| c84142e8 | 5 | The GNU C Library is free software; you can redistribute it and/or |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 28f540f4 | 9 | |
| c84142e8 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 28f540f4 | 14 | |
| 41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 28f540f4 RM |
19 | |
| 20 | #include <hurd.h> | |
| 21 | #include <hurd/signal.h> | |
| 22 | #include <stddef.h> | |
| 23 | ||
| 24 | struct demux | |
| 25 | { | |
| 26 | struct demux *next; | |
| 27 | boolean_t (*demux) (mach_msg_header_t *inp, | |
| 28 | mach_msg_header_t *outp); | |
| 29 | }; | |
| 30 | ||
| 31 | struct demux *_hurd_msgport_demuxers = NULL; | |
| 32 | ||
| 33 | extern boolean_t __msg_server (mach_msg_header_t *inp, | |
| 34 | mach_msg_header_t *outp); | |
| 35 | ||
| 36 | static boolean_t | |
| 37 | msgport_server (mach_msg_header_t *inp, | |
| 38 | mach_msg_header_t *outp) | |
| 39 | { | |
| 40 | extern boolean_t _S_msg_server (mach_msg_header_t *inp, | |
| 41 | mach_msg_header_t *outp); | |
| 42 | extern boolean_t _S_exc_server (mach_msg_header_t *inp, | |
| 43 | mach_msg_header_t *outp); | |
| 44 | struct demux *d; | |
| 45 | ||
| 46 | for (d = _hurd_msgport_demuxers; d != NULL; d = d->next) | |
| 47 | if ((*d->demux) (inp, outp)) | |
| 48 | return 1; | |
| 49 | ||
| 50 | return (_S_exc_server (inp, outp) || | |
| 51 | _S_msg_server (inp, outp)); | |
| 52 | } | |
| 53 | ||
| 54 | /* This is the code that the signal thread runs. */ | |
| 55 | void | |
| 56 | _hurd_msgport_receive (void) | |
| 57 | { | |
| 58 | /* Get our own sigstate cached so we never again have to take a lock to | |
| 59 | fetch it. There is much code in hurdsig.c that operates with some | |
| 72e1a750 RM |
60 | sigstate lock held, which will deadlock with _hurd_thread_sigstate. |
| 61 | ||
| 62 | Furthermore, in the cthreads case this is the convenient spot | |
| 63 | to initialize _hurd_msgport_thread (see hurdsig.c:_hurdsig_init). */ | |
| 64 | ||
| 65 | _hurd_msgport_thread = _hurd_self_sigstate ()->thread; | |
| 28f540f4 RM |
66 | |
| 67 | while (1) | |
| 68 | (void) __mach_msg_server (msgport_server, __vm_page_size, _hurd_msgport); | |
| 69 | } |