diff options
Diffstat (limited to 'nptl/pthread_getschedparam.c')
| -rw-r--r-- | nptl/pthread_getschedparam.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/nptl/pthread_getschedparam.c b/nptl/pthread_getschedparam.c index d9d6cb43b0..434d867779 100644 --- a/nptl/pthread_getschedparam.c +++ b/nptl/pthread_getschedparam.c @@ -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) |