On Tue, 2008-10-28 at 13:54 +0000, Andy Whitcroft wrote:
> When testing the library we sometimes want to influence data which becomes
> cached within the library. To allow this we need to reset that cached data
> to ensure it is re-read from our test data instead of the real system.
> This change adds the concept of a test probe point to the main library.
> These are external symbols but not exposed in the standard header, but
> in libhugetlbfs_testprobe.h. They are also name mangled.
>
> Signed-off-by: Andy Whitcroft <[EMAIL PROTECTED]>
> ---
> libhugetlbfs_internal.h | 1 +
> libhugetlbfs_testprobes.h | 35 +++++++++++++++++++++++++++++++++++
> tests/hugetests.h | 1 +
> version.lds | 2 ++
> 4 files changed, 39 insertions(+), 0 deletions(-)
> create mode 100644 libhugetlbfs_testprobes.h
>
> diff --git a/libhugetlbfs_internal.h b/libhugetlbfs_internal.h
> index d8e9e00..6ebe9c0 100644
> --- a/libhugetlbfs_internal.h
> +++ b/libhugetlbfs_internal.h
> @@ -39,6 +39,7 @@
> #endif /* __LIBHUGETLBFS__ */
>
> #include "libhugetlbfs_privutils.h"
> +#include "libhugetlbfs_testprobes.h"
>
> #define stringify_1(x) #x
> #define stringify(x) stringify_1(x)
> diff --git a/libhugetlbfs_testprobes.h b/libhugetlbfs_testprobes.h
> new file mode 100644
> index 0000000..2b48227
> --- /dev/null
> +++ b/libhugetlbfs_testprobes.h
> @@ -0,0 +1,35 @@
> +/*
> + * libhugetlbfs - Easy use of Linux hugepages
> + * Copyright (C) 2008 IBM Corporation, author: Andy Whitcroft
> + *
> + * This 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.
> + *
> + * This 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 this library; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +/*
> + * This file should only contain definitions of functions, data types, and
> + * constants which are part of the internal library test point interfaces.
test s/point/probe/ interfaces ?
> + * These are exposed only to utilities and tests within the source, this is
> + * not a public interface nor part of the libhugetlfs API.
> + *
> + * All functions declared external here must be externalised using a define
> + * of the following form:
> + *
> + * #define foo __tp_foo
> + */
> +
> +#ifndef _LIBHUGETLBFS_TESTPROBES_H
> +#define _LIBHUGETLBFS_TESTPROBES_H
> +
> +#endif /* _LIBHUGETLBFS_TESTPROBES_H */
> diff --git a/tests/hugetests.h b/tests/hugetests.h
> index 270923b..148895c 100644
> --- a/tests/hugetests.h
> +++ b/tests/hugetests.h
> @@ -24,6 +24,7 @@
> #include <string.h>
>
> #include "libhugetlbfs_privutils.h"
> +#include "libhugetlbfs_testprobes.h"
>
> #define DEBUG
>
> diff --git a/version.lds b/version.lds
> index 626ee02..55060b3 100644
> --- a/version.lds
> +++ b/version.lds
> @@ -4,6 +4,8 @@ VERS_1.0 {
> hugetlbfs_test_path;
> hugetlbfs_find_path;
> hugetlbfs_unlinked_fd;
> +
> + __tp_*;
Are these 1.0 symbols? I would think they should go in HTLBFS_2.1
> local:
> direct_syscall;
> __lh_*;
--
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center
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