sysdeps/mach/hurd/cthreads.c

   1 /* Copyright (C) 1997-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <bits/libc-lock.h>
  19 #include <errno.h>
  20 #include <stdlib.h>
  21
  22 /* Placeholder for key creation routine from Hurd cthreads library.  */
  23 int
  24 weak_function
  25 cthread_keycreate (key)
  26      cthread_key_t *key;
  27 {
  28   __set_errno (ENOSYS);
  29  *key = -1;
  30   return -1;
  31 }
  32
  33 /* Placeholder for key retrieval routine from Hurd cthreads library.  */
  34 int
  35 weak_function
  36 cthread_getspecific (key, pval)
  37      cthread_key_t key;
  38      void **pval;
  39 {
  40   *pval = NULL;
  41   __set_errno (ENOSYS);
  42   return -1;
  43 }
  44
  45 /* Placeholder for key setting routine from Hurd cthreads library.  */
  46 int
  47 weak_function
  48 cthread_setspecific (key, val)
  49      cthread_key_t key;
  50      void *val;
  51 {
  52   __set_errno (ENOSYS);
  53   return -1;
  54 }
  55
  56 /* Call cthread_getspecific which gets a pointer to the return value instead
  57    of just returning it.  */
  58 void *
  59 __libc_getspecific (key)
  60      cthread_key_t key;
  61 {
  62   void *val;
  63   cthread_getspecific (key, &val);
  64   return val;
  65 }