From f214ff74f46275f6f1187730ac88b8a2407393f3 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Thu, 20 Nov 2014 10:56:20 -0800 Subject: NPTL: Refactor scheduler setup in pthread_create. --- sysdeps/unix/sysv/linux/default-sched.h | 42 +++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/default-sched.h (limited to 'sysdeps/unix/sysv') diff --git a/sysdeps/unix/sysv/linux/default-sched.h b/sysdeps/unix/sysv/linux/default-sched.h new file mode 100644 index 0000000000..c25778fde8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/default-sched.h @@ -0,0 +1,42 @@ +/* Determine calling thread's scheduling parameters. Linux version. + Copyright (C) 2014 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see . */ + +#include + +/* This should fill in PD->schedpolicy if PD->flags does not contain + ATTR_FLAG_POLICY_SET, and set it; and PD->schedparam if PD->flags does + not contain ATTR_FLAG_SCHED_SET, and set it. It won't be called at all + if both bits are already set. */ + +static void +collect_default_sched (struct pthread *pd) +{ + INTERNAL_SYSCALL_DECL (scerr); + + if ((pd->flags & ATTR_FLAG_POLICY_SET) == 0) + { + pd->schedpolicy = INTERNAL_SYSCALL (sched_getscheduler, scerr, 1, 0); + pd->flags |= ATTR_FLAG_POLICY_SET; + } + + if ((pd->flags & ATTR_FLAG_SCHED_SET) == 0) + { + INTERNAL_SYSCALL (sched_getparam, scerr, 2, 0, &pd->schedparam); + pd->flags |= ATTR_FLAG_SCHED_SET; + } +} -- cgit 1.4.1