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Diffstat (limited to 'sysdeps/mach/hurd/tls.h')
| -rw-r--r-- | sysdeps/mach/hurd/tls.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/tls.h b/sysdeps/mach/hurd/tls.h new file mode 100644 index 0000000000..f550ed3a51 --- /dev/null +++ b/sysdeps/mach/hurd/tls.h @@ -0,0 +1,55 @@ +/* Definitions for thread-local data handling. Hurd version. + Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _TLS_H +#define _TLS_H + +#ifdef HAVE_TLS_SUPPORT + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + void *pointer; +} dtv_t; + + +/* Type of the TCB. */ +typedef struct +{ + void *tcb; /* Points to this structure. */ + dtv_t *dtv; /* Vector of pointers to TLS data. */ + thread_t self; /* This thread's control port. */ +} tcbhead_t; + +/* This is the size of the initial TCB. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE TLS_INIT_TCB_SIZE /* XXX */ + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN TLS_INIT_TCB_ALIGN /* XXX */ + +#endif /* HAVE_TLS_SUPPORT */ + +#endif /* tls.h */ |