From 2e69ebf6999102c27c21615b610400a0d922e8c9 Mon Sep 17 00:00:00 2001 From: Agustina Arzille Date: Mon, 4 Apr 2016 19:16:31 -0300 Subject: Lightweight synchronization mechanism * Makefrag.am (libkernel_a_SOURCES): Add kern/gsync.c and kern/gsync.h. * include/mach/gnumach.defs (gsync_wait, gsync_wake, gsync_requeue): New routines. * include/mach/kern_return.h (KERN_TIMEDOUT, KERN_INTERRUPTED): New error codes. * kern/gsync.c: New file. * kern/gsync.h: New file. * kern/startup.c: Include (setup_main): Call gsync_setup. --- kern/gsync.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 kern/gsync.h (limited to 'kern/gsync.h') diff --git a/kern/gsync.h b/kern/gsync.h new file mode 100644 index 00000000..aafb6495 --- /dev/null +++ b/kern/gsync.h @@ -0,0 +1,41 @@ +/* Copyright (C) 2016 Free Software Foundation, Inc. + Contributed by Agustina Arzille , 2016. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either + version 3 of the license, or (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public + License along with this program; if not, see + . +*/ + +#ifndef _KERN_GSYNC_H_ +#define _KERN_GSYNC_H_ 1 + +#define GSYNC_SHARED 0x01 +#define GSYNC_QUAD 0x02 +#define GSYNC_TIMED 0x04 +#define GSYNC_BROADCAST 0x08 +#define GSYNC_MUTATE 0x10 + +#include + +void gsync_setup (void); + +kern_return_t gsync_wait (task_t task, vm_offset_t addr, + unsigned int lo, unsigned int hi, natural_t msec, int flags); + +kern_return_t gsync_wake (task_t task, + vm_offset_t addr, unsigned int val, int flags); + +kern_return_t gsync_requeue (task_t task, vm_offset_t src_addr, + vm_offset_t dst_addr, boolean_t wake_one, int flags); + +#endif -- cgit v1.2.3