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* pthread_attr_setschedparam.c: Don't test priority against limits
	here.  Set ATTR_FLAG_SCHED_SET flag.
	* pthread_attr_setschedpolicy.c: Set ATTR_FLAG_POLICY_SET flag.
	* pthread_create.c (__pthread_create_2_1): Copy scheduling attributes
	from parent thread to child.  If attribute is used and scheduling
	parameters are not inherited, copy parameters from attribute or
	compute them.  Check priority value.
	* pthread_getschedparam.c: If the parameters aren't known yet get
	them from the kernel.
	* pthread_setschedparam.c: Set ATTR_FLAG_SCHED_SET and
	ATTR_FLAG_POLICY_SET flag for thread.
	* sysdeps/unix/sysv/linux/internaltypes.h: Define ATTR_FLAG_SCHED_SET
	and ATTR_FLAG_POLICY_SET.

	* sysdeps/pthread/createthread.c: Use tgkill if possible.
This commit is contained in:
Ulrich Drepper
2004-02-27 08:09:35 +00:00
parent 261eada2ca
commit 14ffbc8350
8 changed files with 120 additions and 38 deletions
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35
nptl/pthread_getschedparam.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -36,8 +36,10 @@ __pthread_getschedparam (threadid, policy, param)
/* Not a valid thread handle. */
return ESRCH;
int result = 0;
/* We have to handle cancellation in the following code since we are
locking another threads desriptor. */
locking another threads descriptor. */
pthread_cleanup_push ((void (*) (void *)) lll_unlock_wake_cb, &pd->lock);
lll_lock (pd->lock);
@ -45,14 +47,35 @@ __pthread_getschedparam (threadid, policy, param)
/* The library is responsible for maintaining the values at all
times. If the user uses a interface other than
pthread_setschedparam to modify the scheduler setting it is not
the library's problem. */
*policy = pd->schedpolicy;
memcpy (param, &pd->schedparam, sizeof (struct sched_param));
the library's problem. In case the descriptor's values have
not yet been retrieved do it now. */
if ((pd->flags & ATTR_FLAG_SCHED_SET) == 0)
{
if (__sched_getparam (pd->tid, &pd->schedparam) != 0)
result = 1;
else
pd->flags |= ATTR_FLAG_SCHED_SET;
}
if ((pd->flags & ATTR_FLAG_POLICY_SET) == 0)
{
pd->schedpolicy = __sched_getscheduler (pd->tid);
if (pd->schedpolicy == -1)
result = 1;
else
pd->flags |= ATTR_FLAG_POLICY_SET;
}
if (result == 0)
{
*policy = pd->schedpolicy;
memcpy (param, &pd->schedparam, sizeof (struct sched_param));
}
lll_unlock (pd->lock);
pthread_cleanup_pop (0);
return 0;
return result;
}
strong_alias (__pthread_getschedparam, pthread_getschedparam)