1 /* Copyright (C) 2002, 2003, 2006 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
27 __pthread_setspecific (
34 struct pthread_key_data *level2;
39 /* Special case access to the first 2nd-level block. This is the
41 if (__builtin_expect (key < PTHREAD_KEY_2NDLEVEL_SIZE, 1))
43 /* Verify the key is sane. */
44 if (KEY_UNUSED ((seq = __pthread_keys[key].seq)))
48 level2 = &self->specific_1stblock[key];
50 /* Remember that we stored at least one set of data. */
52 THREAD_SETMEM (self, specific_used, true);
56 if (key >= PTHREAD_KEYS_MAX
57 || KEY_UNUSED ((seq = __pthread_keys[key].seq)))
61 idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
62 idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
64 /* This is the second level array. Allocate it if necessary. */
65 level2 = THREAD_GETMEM_NC (self, specific, idx1st);
69 /* We don't have to do anything. The value would in any case
70 be NULL. We can save the memory allocation. */
74 = (struct pthread_key_data *) calloc (PTHREAD_KEY_2NDLEVEL_SIZE,
79 THREAD_SETMEM_NC (self, specific, idx1st, level2);
82 /* Pointer to the right array element. */
83 level2 = &level2[idx2nd];
85 /* Remember that we stored at least one set of data. */
86 THREAD_SETMEM (self, specific_used, true);
89 /* Store the data and the sequence number so that we can recognize
92 level2->data = (void *) value;
96 strong_alias (__pthread_setspecific, pthread_setspecific)
97 strong_alias (__pthread_setspecific, __pthread_setspecific_internal)