glibc/nptl/stack-aliasing.h

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2014-06-21 10:50:16 +08:00
/* Define macros for stack address aliasing issues for NPTL. Stub version.
Copyright (C) 2014-2015 Free Software Foundation, Inc.
2014-06-21 10:50:16 +08:00
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, see
<http://www.gnu.org/licenses/>. */
/* This is a number of bytes (less than a page) by which to "color" the
starting stack address of new threads. This number is multiplied by the
number of threads created so far and then truncated modulo page size,
to get a roughly even distribution of values for different threads. */
#define COLORING_INCREMENT 0
/* This is a number of bytes that is an alignment that should be avoided
when choosing the exact size of a new thread's stack. If the size
chosen is aligned to this, an extra page will be added to render the
size off-aligned. */
#define MULTI_PAGE_ALIASING 0