diff options
| author | DJ Delorie <dj@redhat.com> | 2006-07-27 18:05:31 +0000 |
|---|---|---|
| committer | DJ Delorie <dj@redhat.com> | 2006-07-27 18:05:31 +0000 |
| commit | a7d421b8150c07eb5e9be3982f3e6ec2add9800e (patch) | |
| tree | 301c7a22bfeeeab91749eec6d0eb46de49b36df9 /libiberty/hashtab.c | |
| parent | 9f2e1e6389f472b35807eddd064b1ba90a2e3ada (diff) | |
| download | gdb-a7d421b8150c07eb5e9be3982f3e6ec2add9800e.zip gdb-a7d421b8150c07eb5e9be3982f3e6ec2add9800e.tar.gz gdb-a7d421b8150c07eb5e9be3982f3e6ec2add9800e.tar.bz2 | |
merge from gcc
Diffstat (limited to 'libiberty/hashtab.c')
| -rw-r--r-- | libiberty/hashtab.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/libiberty/hashtab.c b/libiberty/hashtab.c index a5671a0..bf34a6d 100644 --- a/libiberty/hashtab.c +++ b/libiberty/hashtab.c @@ -421,7 +421,28 @@ htab_empty (htab_t htab) if (entries[i] != HTAB_EMPTY_ENTRY && entries[i] != HTAB_DELETED_ENTRY) (*htab->del_f) (entries[i]); - memset (entries, 0, size * sizeof (PTR)); + /* Instead of clearing megabyte, downsize the table. */ + if (size > 1024*1024 / sizeof (PTR)) + { + int nindex = higher_prime_index (1024 / sizeof (PTR)); + int nsize = prime_tab[nindex].prime; + + if (htab->free_f != NULL) + (*htab->free_f) (htab->entries); + else if (htab->free_with_arg_f != NULL) + (*htab->free_with_arg_f) (htab->alloc_arg, htab->entries); + if (htab->alloc_with_arg_f != NULL) + htab->entries = (PTR *) (*htab->alloc_with_arg_f) (htab->alloc_arg, nsize, + sizeof (PTR *)); + else + htab->entries = (PTR *) (*htab->alloc_f) (nsize, sizeof (PTR *)); + htab->size = nsize; + htab->size_prime_index = nindex; + } + else + memset (entries, 0, size * sizeof (PTR)); + htab->n_deleted = 0; + htab->n_elements = 0; } /* Similar to htab_find_slot, but without several unwanted side effects: |