diff options
Diffstat (limited to 'REORG.TODO/hurd/msgportdemux.c')
-rw-r--r-- | REORG.TODO/hurd/msgportdemux.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/REORG.TODO/hurd/msgportdemux.c b/REORG.TODO/hurd/msgportdemux.c new file mode 100644 index 0000000000..05f7117014 --- /dev/null +++ b/REORG.TODO/hurd/msgportdemux.c @@ -0,0 +1,68 @@ +/* Demux messages sent on the signal port. + Copyright (C) 1991-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <hurd.h> +#include <hurd/signal.h> +#include <stddef.h> + +struct demux + { + struct demux *next; + boolean_t (*demux) (mach_msg_header_t *inp, + mach_msg_header_t *outp); + }; + +struct demux *_hurd_msgport_demuxers = NULL; + +extern boolean_t __msg_server (mach_msg_header_t *inp, + mach_msg_header_t *outp); + +static boolean_t +msgport_server (mach_msg_header_t *inp, + mach_msg_header_t *outp) +{ + extern boolean_t _S_msg_server (mach_msg_header_t *inp, + mach_msg_header_t *outp); + extern boolean_t _S_exc_server (mach_msg_header_t *inp, + mach_msg_header_t *outp); + struct demux *d; + + for (d = _hurd_msgport_demuxers; d != NULL; d = d->next) + if ((*d->demux) (inp, outp)) + return 1; + + return (_S_exc_server (inp, outp) || + _S_msg_server (inp, outp)); +} + +/* This is the code that the signal thread runs. */ +void +_hurd_msgport_receive (void) +{ + /* Get our own sigstate cached so we never again have to take a lock to + fetch it. There is much code in hurdsig.c that operates with some + sigstate lock held, which will deadlock with _hurd_thread_sigstate. + + Furthermore, in the cthreads case this is the convenient spot + to initialize _hurd_msgport_thread (see hurdsig.c:_hurdsig_init). */ + + _hurd_msgport_thread = _hurd_self_sigstate ()->thread; + + while (1) + (void) __mach_msg_server (msgport_server, __vm_page_size, _hurd_msgport); +} |