1234567891011121314151617181920212223242526272829303132333435363738394041424344454647 |
- /* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
- /* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
- /* Copyright (C) 2014 Stony Brook University
- This file is part of Graphene Library OS.
- Graphene Library OS 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 3 of the
- License, or (at your option) any later version.
- Graphene Library OS 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 this program. If not, see <http://www.gnu.org/licenses/>. */
- /*
- * shim_sched.c
- *
- * Implementation of system call "sched_yield".
- */
- #include <shim_internal.h>
- #include <shim_table.h>
- #include <api.h>
- #include <pal.h>
- #include <errno.h>
- int shim_do_sched_yield (void)
- {
- DkThreadYieldExecution();
- return 0;
- }
- int shim_do_sched_getaffinity (pid_t pid, size_t len,
- __kernel_cpu_set_t * user_mask_ptr)
- {
- int ncpus = PAL_CB(cpu_info.cpu_num);
- memset(user_mask_ptr, 0, len);
- for (int i = 0 ; i < ncpus ; i++)
- ((uint8_t *) user_mask_ptr)[i / 8] |= 1 << (i % 8);
- return ncpus;
- }
|