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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /nptl/tpp.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'nptl/tpp.c')
-rw-r--r--nptl/tpp.c172
1 files changed, 0 insertions, 172 deletions
diff --git a/nptl/tpp.c b/nptl/tpp.c
deleted file mode 100644
index 367dd81..0000000
--- a/nptl/tpp.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/* Thread Priority Protect helpers.
- Copyright (C) 2006 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jakub@redhat.com>, 2006.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <assert.h>
-#include <atomic.h>
-#include <errno.h>
-#include <pthreadP.h>
-#include <sched.h>
-#include <stdlib.h>
-
-
-int __sched_fifo_min_prio = -1;
-int __sched_fifo_max_prio = -1;
-
-void
-__init_sched_fifo_prio (void)
-{
- __sched_fifo_max_prio = sched_get_priority_max (SCHED_FIFO);
- atomic_write_barrier ();
- __sched_fifo_min_prio = sched_get_priority_min (SCHED_FIFO);
-}
-
-int
-__pthread_tpp_change_priority (int previous_prio, int new_prio)
-{
- struct pthread *self = THREAD_SELF;
- struct priority_protection_data *tpp = THREAD_GETMEM (self, tpp);
-
- if (tpp == NULL)
- {
- if (__sched_fifo_min_prio == -1)
- __init_sched_fifo_prio ();
-
- size_t size = sizeof *tpp;
- size += (__sched_fifo_max_prio - __sched_fifo_min_prio + 1)
- * sizeof (tpp->priomap[0]);
- tpp = calloc (size, 1);
- if (tpp == NULL)
- return ENOMEM;
- tpp->priomax = __sched_fifo_min_prio - 1;
- THREAD_SETMEM (self, tpp, tpp);
- }
-
- assert (new_prio == -1
- || (new_prio >= __sched_fifo_min_prio
- && new_prio <= __sched_fifo_max_prio));
- assert (previous_prio == -1
- || (previous_prio >= __sched_fifo_min_prio
- && previous_prio <= __sched_fifo_max_prio));
-
- int priomax = tpp->priomax;
- int newpriomax = priomax;
- if (new_prio != -1)
- {
- if (tpp->priomap[new_prio - __sched_fifo_min_prio] + 1 == 0)
- return EAGAIN;
- ++tpp->priomap[new_prio - __sched_fifo_min_prio];
- if (new_prio > priomax)
- newpriomax = new_prio;
- }
-
- if (previous_prio != -1)
- {
- if (--tpp->priomap[previous_prio - __sched_fifo_min_prio] == 0
- && priomax == previous_prio
- && previous_prio > new_prio)
- {
- int i;
- for (i = previous_prio - 1; i >= __sched_fifo_min_prio; --i)
- if (tpp->priomap[i - __sched_fifo_min_prio])
- break;
- newpriomax = i;
- }
- }
-
- if (priomax == newpriomax)
- return 0;
-
- lll_lock (self->lock);
-
- tpp->priomax = newpriomax;
-
- int result = 0;
-
- if ((self->flags & ATTR_FLAG_SCHED_SET) == 0)
- {
- if (__sched_getparam (self->tid, &self->schedparam) != 0)
- result = errno;
- else
- self->flags |= ATTR_FLAG_SCHED_SET;
- }
-
- if ((self->flags & ATTR_FLAG_POLICY_SET) == 0)
- {
- self->schedpolicy = __sched_getscheduler (self->tid);
- if (self->schedpolicy == -1)
- result = errno;
- else
- self->flags |= ATTR_FLAG_POLICY_SET;
- }
-
- if (result == 0)
- {
- struct sched_param sp = self->schedparam;
- if (sp.sched_priority < newpriomax || sp.sched_priority < priomax)
- {
- if (sp.sched_priority < newpriomax)
- sp.sched_priority = newpriomax;
-
- if (__sched_setscheduler (self->tid, self->schedpolicy, &sp) < 0)
- result = errno;
- }
- }
-
- lll_unlock (self->lock);
-
- return result;
-}
-
-int
-__pthread_current_priority (void)
-{
- struct pthread *self = THREAD_SELF;
- if ((self->flags & (ATTR_FLAG_POLICY_SET | ATTR_FLAG_SCHED_SET))
- == (ATTR_FLAG_POLICY_SET | ATTR_FLAG_SCHED_SET))
- return self->schedparam.sched_priority;
-
- int result = 0;
-
- lll_lock (self->lock);
-
- if ((self->flags & ATTR_FLAG_SCHED_SET) == 0)
- {
- if (__sched_getparam (self->tid, &self->schedparam) != 0)
- result = -1;
- else
- self->flags |= ATTR_FLAG_SCHED_SET;
- }
-
- if ((self->flags & ATTR_FLAG_POLICY_SET) == 0)
- {
- self->schedpolicy = __sched_getscheduler (self->tid);
- if (self->schedpolicy == -1)
- result = -1;
- else
- self->flags |= ATTR_FLAG_POLICY_SET;
- }
-
- if (result != -1)
- result = self->schedparam.sched_priority;
-
- lll_unlock (self->lock);
-
- return result;
-}