lib/glibc
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Break out _dl_scope_free into its own file.

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This reduces the coarse static callgraph that can be discovered by
looking at the object files.
This commit is contained in:
Ulrich Drepper
2009-07-27 13:23:00 -07:00
parent 2d0671cbbd
commit 87cfd82a1f
3 changed files with 59 additions and 36 deletions
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2
elf/Makefile
View File

@@ -29,7 +29,7 @@ routines = $(dl-routines) dl-support dl-iteratephdr \
# profiled libraries. # profiled libraries.
dl-routines = $(addprefix dl-,load cache lookup object reloc deps \ dl-routines = $(addprefix dl-,load cache lookup object reloc deps \
runtime error init fini debug misc \ runtime error init fini debug misc \
version profile conflict tls origin \ version profile conflict tls origin scope \
execstack caller open close trampoline) execstack caller open close trampoline)
all-dl-routines = $(dl-routines) $(sysdep-dl-routines) all-dl-routines = $(dl-routines) $(sysdep-dl-routines)
# But they are absent from the shared libc, because that code is in ld.so. # But they are absent from the shared libc, because that code is in ld.so.

35
elf/dl-open.c
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@@ -165,41 +165,6 @@ add_to_global (struct link_map *new)
return 0; return 0;
} }
int
_dl_scope_free (void *old)
{
struct dl_scope_free_list *fsl;
#define DL_SCOPE_FREE_LIST_SIZE (sizeof (fsl->list) / sizeof (fsl->list[0]))
if (RTLD_SINGLE_THREAD_P)
free (old);
else if ((fsl = GL(dl_scope_free_list)) == NULL)
{
GL(dl_scope_free_list) = fsl = malloc (sizeof (*fsl));
if (fsl == NULL)
{
THREAD_GSCOPE_WAIT ();
free (old);
return 1;
}
else
{
fsl->list[0] = old;
fsl->count = 1;
}
}
else if (fsl->count < DL_SCOPE_FREE_LIST_SIZE)
fsl->list[fsl->count++] = old;
else
{
THREAD_GSCOPE_WAIT ();
while (fsl->count > 0)
free (fsl->list[--fsl->count]);
return 1;
}
return 0;
}
static void static void
dl_open_worker (void *a) dl_open_worker (void *a)
{ {

58
elf/dl-scope.c Normal file
View File

@@ -0,0 +1,58 @@
/* Memory handling for the scope data structures.
Copyright (C) 2009 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. */
#include <stdlib.h>
#include <ldsodefs.h>
#include <sysdep-cancel.h>
int
_dl_scope_free (void *old)
{
struct dl_scope_free_list *fsl;
#define DL_SCOPE_FREE_LIST_SIZE (sizeof (fsl->list) / sizeof (fsl->list[0]))
if (RTLD_SINGLE_THREAD_P)
free (old);
else if ((fsl = GL(dl_scope_free_list)) == NULL)
{
GL(dl_scope_free_list) = fsl = malloc (sizeof (*fsl));
if (fsl == NULL)
{
THREAD_GSCOPE_WAIT ();
free (old);
return 1;
}
else
{
fsl->list[0] = old;
fsl->count = 1;
}
}
else if (fsl->count < DL_SCOPE_FREE_LIST_SIZE)
fsl->list[fsl->count++] = old;
else
{
THREAD_GSCOPE_WAIT ();
while (fsl->count > 0)
free (fsl->list[--fsl->count]);
return 1;
}
return 0;
}