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glibc  2.9
td_ta_clear_event.c
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00001 /* Globally disable events.
00002    Copyright (C) 1999, 2001, 2005 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include "thread_dbP.h"
00022 
00023 
00024 td_err_e
00025 td_ta_clear_event (ta, event)
00026      const td_thragent_t *ta;
00027      td_thr_events_t *event;
00028 {
00029   td_thr_events_t old_event;
00030   int i;
00031 
00032   LOG ("td_ta_clear_event");
00033 
00034   /* Test whether the TA parameter is ok.  */
00035   if (! ta_ok (ta))
00036     return TD_BADTA;
00037 
00038   /* Write the new value into the thread data structure.  */
00039   if (ps_pdread (ta->ph, ta->pthread_threads_eventsp,
00040                &old_event, sizeof (td_thr_events_t)) != PS_OK)
00041     return TD_ERR;   /* XXX Other error value?  */
00042 
00043   /* Remove the set bits in.  */
00044   for (i = 0; i < TD_EVENTSIZE; ++i)
00045     old_event.event_bits[i] &= ~event->event_bits[i];
00046 
00047   /* Write the new value into the thread data structure.  */
00048   if (ps_pdwrite (ta->ph, ta->pthread_threads_eventsp,
00049                 &old_event, sizeof (td_thr_events_t)) != PS_OK)
00050     return TD_ERR;   /* XXX Other error value?  */
00051 
00052   return TD_OK;
00053 }