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56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* Definitions for thread-local data handling. Hurd version.
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Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _TLS_H
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#define _TLS_H
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#ifdef HAVE_TLS_SUPPORT
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/* Type for the dtv. */
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typedef union dtv
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{
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size_t counter;
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void *pointer;
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} dtv_t;
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/* Type of the TCB. */
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typedef struct
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{
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void *tcb; /* Points to this structure. */
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dtv_t *dtv; /* Vector of pointers to TLS data. */
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thread_t self; /* This thread's control port. */
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} tcbhead_t;
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/* This is the size of the initial TCB. */
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# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
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/* Alignment requirements for the initial TCB. */
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# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
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/* This is the size of the TCB. */
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# define TLS_TCB_SIZE TLS_INIT_TCB_SIZE /* XXX */
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/* Alignment requirements for the TCB. */
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# define TLS_TCB_ALIGN TLS_INIT_TCB_ALIGN /* XXX */
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#endif /* HAVE_TLS_SUPPORT */
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#endif /* tls.h */
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