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Revert "Improve performance of creating Hash object"

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This reverts commit r61309
Because it was unstable on mswin CI.

[ruby-dev:50370][Bug #14203]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61341 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
watson1978 2017-12-19 14:26:30 +00:00
parent 26529d3df9
commit 2e6235aa71
2 changed files with 6 additions and 60 deletions
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1
inits.c
View file

@ -16,7 +16,6 @@
void
rb_call_inits(void)
{
CALL(st);
CALL(Method);
CALL(RandomSeedCore);
CALL(sym);

65
st.c
View file

@ -108,7 +108,6 @@
#endif
#include <string.h>
#include <assert.h>
#include "ccan/list/list.h"
#ifdef __GNUC__
#define PREFETCH(addr, write_p) __builtin_prefetch(addr, write_p)
@ -126,18 +125,6 @@
#define st_assert(cond) ((void)(0 && (cond)))
#endif
typedef struct st_table_list {
st_table table;
struct list_node node;
} st_table_list;
struct st_table_pool {
struct list_head head;
int length;
};
static struct st_table_pool st_table_pool;
#define ST_TABLE_POOL_MAX_LENGTH 500
/* The type of hashes. */
typedef st_index_t st_hash_t;
@ -561,38 +548,6 @@ stat_col(void)
}
#endif
static st_table *
get_st_table(void)
{
st_table_list *table;
if (!ruby_thread_has_gvl_p() || st_table_pool.length == 0) {
table = (st_table_list*)malloc(sizeof (st_table_list));
list_node_init(&table->node);
return (st_table*)table;
}
table = list_pop(&st_table_pool.head, st_table_list, node);
st_table_pool.length--;
return (st_table*)table;
}
static void
pool_st_table(st_table *_table)
{
st_table_list *table = (st_table_list*)_table;
if (!ruby_thread_has_gvl_p() ||
st_table_pool.length >= ST_TABLE_POOL_MAX_LENGTH) {
free(table);
return;
}
list_add_tail(&st_table_pool.head, &table->node);
st_table_pool.length++;
}
/* Create and return table with TYPE which can hold at least SIZE
entries. The real number of entries which the table can hold is
the nearest power of two for SIZE. */
@ -616,7 +571,7 @@ st_init_table_with_size(const struct st_hash_type *type, st_index_t size)
#endif
n = get_power2(size);
tab = get_st_table();
tab = (st_table *) malloc(sizeof (st_table));
tab->type = type;
tab->entry_power = n;
tab->bin_power = features[n].bin_power;
@ -713,14 +668,14 @@ st_free_table(st_table *tab)
if (tab->bins != NULL)
free(tab->bins);
free(tab->entries);
pool_st_table(tab);
free(tab);
}
/* Return byte size of memory allocted for table TAB. */
size_t
st_memsize(const st_table *tab)
{
return(sizeof(st_table_list)
return(sizeof(st_table)
+ (tab->bins == NULL ? 0 : bins_size(tab))
+ get_allocated_entries(tab) * sizeof(st_table_entry));
}
@ -836,7 +791,7 @@ rebuild_table(st_table *tab)
tab->bins = new_tab->bins;
free(tab->entries);
tab->entries = new_tab->entries;
pool_st_table(new_tab);
free(new_tab);
}
tab->entries_start = 0;
tab->entries_bound = tab->num_entries;
@ -1283,7 +1238,7 @@ st_copy(st_table *old_tab)
{
st_table *new_tab;
new_tab = (st_table *) malloc(sizeof(st_table_list));
new_tab = (st_table *) malloc(sizeof(st_table));
*new_tab = *old_tab;
if (old_tab->bins == NULL)
new_tab->bins = NULL;
@ -2057,7 +2012,7 @@ st_expand_table(st_table *tab, st_index_t siz)
tab->entries = tmp->entries;
tab->bins = NULL;
tab->rebuilds_num++;
pool_st_table(tmp);
free(tmp);
}
/* Rehash using linear search. */
@ -2237,11 +2192,3 @@ rb_hash_bulk_insert(long argc, const VALUE *argv, VALUE hash)
st_insert_generic(tab, argc, argv, hash);
}
#endif
void
Init_st(void)
{
/* initialize st_table pool */
list_head_init(&st_table_pool.head);
st_table_pool.length = 0;
}