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ggc-page.c (NUM_SIZE_LOOKUP): New constant - the length of the size_lookup[] array. 

* ggc-page.c (NUM_SIZE_LOOKUP): New constant - the length of the size_lookup[] array.
  (ggc_alloc_stat): Use NUM_SIZE_LOOKUP.
  (ggc_pch_count_object): Likewise.
  (ggc_pch_alloc_object): Likewise.
  (ggc_pch_write_object): Likewise.
  (init_ggc): Do not attempt to initialize entries in the size_lookup[] array
  for objects whose size is greater than than the length of the array.

From-SVN: r115738
This commit is contained in:
Nick Clifton 2006-07-25 15:33:50 +00:00 committed by Nick Clifton
parent 2daec0f085
commit 6583cf153d
2 changed files with 23 additions and 8 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
2006-07-25 Nick Clifton <nickc@redhat.com>
* ggc-page.c (NUM_SIZE_LOOKUP): New constant - the length of the
size_lookup[] array.
(ggc_alloc_stat): Use NUM_SIZE_LOOKUP.
(ggc_pch_count_object): Likewise.
(ggc_pch_alloc_object): Likewise.
(ggc_pch_write_object): Likewise.
(init_ggc): Do not attempt to initialize entries in the
size_lookup[] array for objects whose size is greater than than
the length of the array.
2006-07-25 Daniel Jacobowitz <dan@codesourcery.com>
* dbxout.c (output_used_types_helper): Push queued types

19
gcc/ggc-page.c
View File

@ -1029,8 +1029,8 @@ release_pages (void)
/* This table provides a fast way to determine ceil(log_2(size)) for
allocation requests. The minimum allocation size is eight bytes. */
static unsigned char size_lookup[512] =
#define NUM_SIZE_LOOKUP 512
static unsigned char size_lookup[NUM_SIZE_LOOKUP] =
{
3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4,
4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
@ -1084,7 +1084,7 @@ ggc_alloc_stat (size_t size MEM_STAT_DECL)
struct page_entry *entry;
void *result;
if (size < 512)
if (size < NUM_SIZE_LOOKUP)
{
order = size_lookup[size];
object_size = OBJECT_SIZE (order);
@ -1534,8 +1534,11 @@ init_ggc (void)
int o;
int i;
o = size_lookup[OBJECT_SIZE (order)];
for (i = OBJECT_SIZE (order); size_lookup [i] == o; --i)
i = OBJECT_SIZE (order);
if (i >= NUM_SIZE_LOOKUP)
continue;
for (o = size_lookup[i]; o == size_lookup [i]; --i)
size_lookup[i] = order;
}
@ -2046,7 +2049,7 @@ ggc_pch_count_object (struct ggc_pch_data *d, void *x ATTRIBUTE_UNUSED,
{
unsigned order;
if (size < 512)
if (size < NUM_SIZE_LOOKUP)
order = size_lookup[size];
else
{
@ -2091,7 +2094,7 @@ ggc_pch_alloc_object (struct ggc_pch_data *d, void *x ATTRIBUTE_UNUSED,
unsigned order;
char *result;
if (size < 512)
if (size < NUM_SIZE_LOOKUP)
order = size_lookup[size];
else
{
@ -2120,7 +2123,7 @@ ggc_pch_write_object (struct ggc_pch_data *d ATTRIBUTE_UNUSED,
unsigned order;
static const char emptyBytes[256];
if (size < 512)
if (size < NUM_SIZE_LOOKUP)
order = size_lookup[size];
else
{