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gst/gstregistrybinary.c: Align memory to the pointer size instead of always 32 bit. Fixes unaligned memory accesses o...

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Original commit message from CVS:
* gst/gstregistrybinary.c: (gst_registry_binary_write),
(gst_registry_binary_check_magic),
(gst_registry_binary_load_pad_template),
(gst_registry_binary_load_feature),
(gst_registry_binary_load_plugin):
Align memory to the pointer size instead of always 32 bit. Fixes
unaligned memory accesses on ia64 and friends.
* gst/gstregistrybinary.h:
Bump binary registry format version for this as it changes the
format on those architectures that don't have unaligned access
and 64 bit pointers.
This commit is contained in:
Sebastian Dröge 2008-03-23 11:23:30 +00:00
parent b0346dff44
commit 79bd94558c
4 changed files with 34 additions and 17 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2008-03-23 Sebastian Dröge <slomo@circular-chaos.org>
* gst/gstregistrybinary.c: (gst_registry_binary_write),
(gst_registry_binary_check_magic),
(gst_registry_binary_load_pad_template),
(gst_registry_binary_load_feature),
(gst_registry_binary_load_plugin):
Align memory to the pointer size instead of always 32 bit. Fixes
unaligned memory accesses on ia64 and friends.
* gst/gstregistrybinary.h:
Bump binary registry format version for this as it changes the
format on those architectures that don't have unaligned access
and 64 bit pointers.
2008-03-22 Sebastian Dröge <slomo@circular-chaos.org>
* docs/pwg/advanced-dparams.xml:

2
common

@ -1 +1 @@
Subproject commit 9a358e5cc3977fd6121f12dd25a358081fd77041
Subproject commit 4221e9dcb05faa6f6f7ba19bba32fe90da4577dd

32
gst/gstregistrybinary.c
View file

@ -77,7 +77,7 @@
/* macros */
#define unpack_element(_inptr, _outptr, _element) \
_outptr = (_element *)_inptr; \
_outptr = (_element *) _inptr; \
_inptr += sizeof (_element)
#define unpack_const_string(_inptr, _outptr) \
@ -89,11 +89,13 @@
_inptr += strlen(_outptr) + 1
#if !GST_HAVE_UNALIGNED_ACCESS
# define alignment32(_address) (gsize)_address%4
# define align32(_ptr) _ptr += (( alignment32(_ptr) == 0) ? 0 : 4-alignment32(_ptr))
# define ALIGNMENT (sizeof (void *))
# define alignment(_address) (gsize)_address%ALIGNMENT
# define align(_ptr) _ptr += (( alignment(_ptr) == 0) ? 0 : ALIGNMENT-alignment(_ptr))
#else
# define alignment32(_address) 0
# define align32(_ptr) do {} while(0)
# define ALIGNMENT 0
# define alignment(_address) 0
# define align(_ptr) do {} while(0)
#endif
@ -111,12 +113,12 @@ gst_registry_binary_write (GstRegistry * registry, const void *mem,
const gssize size, unsigned long *file_position, gboolean align)
{
#if !GST_HAVE_UNALIGNED_ACCESS
gchar padder[] = { 0, 0, 0, 0 };
gchar padder[ALIGN] = { 0, };
int padsize = 0;
/* Padding to insert the struct that requiere word alignment */
if ((align) && (alignment32 (*file_position) != 0)) {
padsize = 4 - alignment32 (*file_position);
if ((align) && (alignment (*file_position) != 0)) {
padsize = ALIGNMENT - alignment (*file_position);
if (write (registry->cache_file, padder, padsize) != padsize) {
GST_ERROR ("Failed to write binary registry padder");
return FALSE;
@ -606,7 +608,7 @@ gst_registry_binary_check_magic (gchar ** in)
{
GstBinaryRegistryMagic *m;
align32 (*in);
align (*in);
GST_DEBUG ("Reading/casting for GstBinaryRegistryMagic at address %p", *in);
unpack_element (*in, m, GstBinaryRegistryMagic);
@ -648,7 +650,7 @@ gst_registry_binary_load_pad_template (GstElementFactory * factory, gchar ** in)
GstBinaryPadTemplate *pt;
GstStaticPadTemplate *template;
align32 (*in);
align (*in);
GST_DEBUG ("Reading/casting for GstBinaryPadTemplate at address %p", *in);
unpack_element (*in, pt, GstBinaryPadTemplate);
@ -714,7 +716,7 @@ gst_registry_binary_load_feature (GstRegistry * registry, gchar ** in,
GstBinaryElementFactory *ef;
GstElementFactory *factory = GST_ELEMENT_FACTORY (feature);
align32 (*in);
align (*in);
GST_LOG ("Reading/casting for GstBinaryElementFactory at address %p", *in);
unpack_element (*in, ef, GstBinaryElementFactory);
pf = (GstBinaryPluginFeature *) ef;
@ -739,7 +741,7 @@ gst_registry_binary_load_feature (GstRegistry * registry, gchar ** in,
if (ef->nuriprotocols) {
GST_DEBUG ("Reading %d UriTypes at address %p", ef->nuriprotocols, *in);
align32 (*in);
align (*in);
factory->uri_type = *((guint *) * in);
*in += sizeof (factory->uri_type);
//unpack_element(*in, &factory->uri_type, factory->uri_type);
@ -761,7 +763,7 @@ gst_registry_binary_load_feature (GstRegistry * registry, gchar ** in,
GstBinaryTypeFindFactory *tff;
GstTypeFindFactory *factory = GST_TYPE_FIND_FACTORY (feature);
align32 (*in);
align (*in);
GST_DEBUG ("Reading/casting for GstBinaryPluginFeature at address %p", *in);
unpack_element (*in, tff, GstBinaryTypeFindFactory);
pf = (GstBinaryPluginFeature *) tff;
@ -785,7 +787,7 @@ gst_registry_binary_load_feature (GstRegistry * registry, gchar ** in,
else if (GST_IS_INDEX_FACTORY (feature)) {
GstIndexFactory *factory = GST_INDEX_FACTORY (feature);
align32 (*in);
align (*in);
GST_DEBUG ("Reading/casting for GstBinaryPluginFeature at address %p", *in);
unpack_element (*in, pf, GstBinaryPluginFeature);
@ -830,7 +832,7 @@ gst_registry_binary_load_plugin (GstRegistry * registry, gchar ** in)
GstPlugin *plugin = NULL;
guint i;
align32 (*in);
align (*in);
GST_LOG ("Reading/casting for GstBinaryPluginElement at address %p", *in);
unpack_element (*in, pe, GstBinaryPluginElement);

2
gst/gstregistrybinary.h
View file

@ -57,7 +57,7 @@
* This _must_ be updated whenever the registry format changes,
* we currently use the core version where this change happened.
*/
#define GST_MAGIC_BINARY_VERSION_STR ("0.10.18")
#define GST_MAGIC_BINARY_VERSION_STR ("0.10.18.1")
/*
* GST_MAGIC_BINARY_VERSION_LEN: