зеркало из https://github.com/github/ruby.git
st.c: use ccan linked-list (try 3)
This improves the bm_vm2_bighash benchmark significantly by
removing branches during insert, but slows down anything
requiring iteration with the more complex loop termination
checking.
Speedup ratio of 1.10 - 1.20 is typical for the vm2_bighash
benchmark.
v3 - st_head calculates list_head address in two steps
to avoid a bug in old gcc 4.4 (Debian 4.4.7-2)
bug which incorrectly warned with:
warning: dereferencing pointer ‘({anonymous})’ does break
strict-aliasing rules
* include/ruby/st.h (struct st_table): hide struct list_head
* st.c (struct st_table_entry): adjust struct
(head, tail): remove shortcut macros
(st_head): new wrapper function
(st_init_table_with_size): adjust to new struct and API
(st_clear): ditto
(add_direct): ditto
(unpack_entries): ditto
(rehash): ditto
(st_copy): ditto
(remove_entry): ditto
(st_shift): ditto
(st_foreach_check): ditto
(st_foreach): ditto
(get_keys): ditto
(get_values): ditto
(st_values_check): ditto
(st_reverse_foreach_check): ditto (unused)
(st_reverse_foreach): ditto (unused)
[ruby-core:69726] [Misc #10278]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51064 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal
Родитель
7604ca41ff
Коммит
c31b0def42
23
ChangeLog
23
ChangeLog
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|
@ -1,3 +1,26 @@
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Tue Jun 30 02:47:02 2015 Eric Wong <e@80x24.org>
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* include/ruby/st.h (struct st_table): hide struct list_head
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* st.c (struct st_table_entry): adjust struct
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(head, tail): remove shortcut macros
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(st_head): new wrapper function
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(st_init_table_with_size): adjust to new struct and API
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(st_clear): ditto
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(add_direct): ditto
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(unpack_entries): ditto
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(rehash): ditto
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(st_copy): ditto
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(remove_entry): ditto
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(st_shift): ditto
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(st_foreach_check): ditto
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(st_foreach): ditto
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(get_keys): ditto
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(get_values): ditto
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(st_values_check): ditto
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(st_reverse_foreach_check): ditto (unused)
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(st_reverse_foreach): ditto (unused)
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[ruby-core:69726] [Misc #10278]
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Mon Jun 29 17:38:01 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
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* insns.def (defineclass): do not quote unprintable characters at
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|
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@ -86,7 +86,7 @@ struct st_table {
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union {
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struct {
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struct st_table_entry **bins;
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struct st_table_entry *head, *tail;
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void *private_list_head[2];
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} big;
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struct {
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struct st_packed_entry *entries;
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|
|
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203
st.c
203
st.c
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@ -23,7 +23,7 @@ struct st_table_entry {
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st_data_t key;
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st_data_t record;
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st_table_entry *next;
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st_table_entry *fore, *back;
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struct list_node olist;
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};
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typedef struct st_packed_entry {
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|
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@ -108,8 +108,6 @@ st_realloc_bins(st_table_entry **bins, st_index_t newsize, st_index_t oldsize)
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/* Shortcut */
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#define bins as.big.bins
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#define head as.big.head
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#define tail as.big.tail
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#define real_entries as.packed.real_entries
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/* preparation for possible packing improvements */
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@ -195,6 +193,13 @@ stat_col(void)
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}
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#endif
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static struct list_head *
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st_head(const st_table *tbl)
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{
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uintptr_t addr = (uintptr_t)&tbl->as.big.private_list_head;
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return (struct list_head *)addr;
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}
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st_table*
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st_init_table_with_size(const struct st_hash_type *type, st_index_t size)
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{
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|
|
@ -220,14 +225,14 @@ st_init_table_with_size(const struct st_hash_type *type, st_index_t size)
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tbl->entries_packed = size <= MAX_PACKED_HASH;
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if (tbl->entries_packed) {
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size = ST_DEFAULT_PACKED_TABLE_SIZE;
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tbl->real_entries = 0;
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}
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else {
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size = new_size(size); /* round up to power-of-two */
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list_head_init(st_head(tbl));
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}
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tbl->num_bins = size;
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tbl->bins = st_alloc_bins(size);
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tbl->head = 0;
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tbl->tail = 0;
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return tbl;
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}
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@ -278,7 +283,6 @@ void
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st_clear(st_table *table)
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{
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register st_table_entry *ptr, *next;
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st_index_t i;
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if (table->entries_packed) {
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table->num_entries = 0;
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|
|
@ -286,18 +290,13 @@ st_clear(st_table *table)
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return;
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}
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for (i = 0; i < table->num_bins; i++) {
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ptr = table->bins[i];
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table->bins[i] = 0;
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while (ptr != 0) {
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next = ptr->next;
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list_for_each_safe(st_head(table), ptr, next, olist) {
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/* list_del is not needed */
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st_free_entry(ptr);
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ptr = next;
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}
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}
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table->num_entries = 0;
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table->head = 0;
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table->tail = 0;
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MEMZERO(table->bins, st_table_entry*, table->num_bins);
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list_head_init(st_head(table));
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}
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void
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|
|
@ -465,16 +464,7 @@ add_direct(st_table *table, st_data_t key, st_data_t value,
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}
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entry = new_entry(table, key, value, hash_val, bin_pos);
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if (table->head != 0) {
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entry->fore = 0;
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(entry->back = table->tail)->fore = entry;
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table->tail = entry;
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}
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else {
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table->head = table->tail = entry;
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entry->fore = entry->back = 0;
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}
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list_add_tail(st_head(table), &entry->olist);
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table->num_entries++;
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}
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@ -483,7 +473,7 @@ unpack_entries(register st_table *table)
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{
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st_index_t i;
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st_packed_entry packed_bins[MAX_PACKED_HASH];
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register st_table_entry *entry, *preventry = 0, **chain;
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register st_table_entry *entry;
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st_table tmp_table = *table;
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MEMCPY(packed_bins, PACKED_BINS(table), st_packed_entry, MAX_PACKED_HASH);
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@ -495,22 +485,24 @@ unpack_entries(register st_table *table)
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tmp_table.bins = st_realloc_bins(tmp_table.bins, ST_DEFAULT_INIT_TABLE_SIZE, tmp_table.num_bins);
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tmp_table.num_bins = ST_DEFAULT_INIT_TABLE_SIZE;
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#endif
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/*
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* order is important here, we need to keep the original table
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* walkable during GC (GC may be triggered by new_entry call)
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*/
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i = 0;
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chain = &tmp_table.head;
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list_head_init(st_head(&tmp_table));
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do {
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st_data_t key = packed_bins[i].key;
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st_data_t val = packed_bins[i].val;
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st_index_t hash = packed_bins[i].hash;
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entry = new_entry(&tmp_table, key, val, hash,
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hash_pos(hash, ST_DEFAULT_INIT_TABLE_SIZE));
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*chain = entry;
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entry->back = preventry;
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preventry = entry;
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chain = &entry->fore;
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list_add_tail(st_head(&tmp_table), &entry->olist);
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} while (++i < MAX_PACKED_HASH);
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*chain = NULL;
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tmp_table.tail = entry;
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*table = tmp_table;
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list_head_init(st_head(table));
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list_append_list(st_head(table), st_head(&tmp_table));
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}
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static void
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|
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@ -620,12 +612,10 @@ rehash(register st_table *table)
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table->num_bins = new_num_bins;
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table->bins = new_bins;
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if ((ptr = table->head) != 0) {
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do {
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list_for_each(st_head(table), ptr, olist) {
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hash_val = hash_pos(ptr->hash, new_num_bins);
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ptr->next = new_bins[hash_val];
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new_bins[hash_val] = ptr;
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} while ((ptr = ptr->fore) != 0);
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}
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}
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|
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@ -633,9 +623,8 @@ st_table*
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st_copy(st_table *old_table)
|
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{
|
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st_table *new_table;
|
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st_table_entry *ptr, *entry, *prev, **tailp;
|
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st_table_entry *ptr, *entry;
|
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st_index_t num_bins = old_table->num_bins;
|
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st_index_t hash_val;
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new_table = st_alloc_table();
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if (new_table == 0) {
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|
|
@ -655,24 +644,12 @@ st_copy(st_table *old_table)
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return new_table;
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}
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if ((ptr = old_table->head) != 0) {
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prev = 0;
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tailp = &new_table->head;
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do {
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entry = st_alloc_entry();
|
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if (entry == 0) {
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st_free_table(new_table);
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return 0;
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}
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*entry = *ptr;
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hash_val = hash_pos(entry->hash, num_bins);
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entry->next = new_table->bins[hash_val];
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new_table->bins[hash_val] = entry;
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entry->back = prev;
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*tailp = prev = entry;
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tailp = &entry->fore;
|
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} while ((ptr = ptr->fore) != 0);
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new_table->tail = prev;
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list_head_init(st_head(new_table));
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list_for_each(st_head(old_table), ptr, olist) {
|
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entry = new_entry(new_table, ptr->key, ptr->record, ptr->hash,
|
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hash_pos(ptr->hash, num_bins));
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list_add_tail(st_head(new_table), &entry->olist);
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}
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return new_table;
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|
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@ -681,17 +658,7 @@ st_copy(st_table *old_table)
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static inline void
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remove_entry(st_table *table, st_table_entry *ptr)
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{
|
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if (ptr->fore == 0 && ptr->back == 0) {
|
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table->head = 0;
|
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table->tail = 0;
|
||||
}
|
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else {
|
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st_table_entry *fore = ptr->fore, *back = ptr->back;
|
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if (fore) fore->back = back;
|
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if (back) back->fore = fore;
|
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if (ptr == table->head) table->head = fore;
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if (ptr == table->tail) table->tail = back;
|
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}
|
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list_del(&ptr->olist);
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table->num_entries--;
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}
|
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|
||||
|
|
@ -771,6 +738,7 @@ st_delete_safe(register st_table *table, register st_data_t *key, st_data_t *val
|
|||
int
|
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st_shift(register st_table *table, register st_data_t *key, st_data_t *value)
|
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{
|
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st_table_entry *old;
|
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st_table_entry **prev;
|
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register st_table_entry *ptr;
|
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|
||||
|
|
@ -786,12 +754,13 @@ st_shift(register st_table *table, register st_data_t *key, st_data_t *value)
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return 1;
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}
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|
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prev = &table->bins[hash_pos(table->head->hash, table->num_bins)];
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while ((ptr = *prev) != table->head) prev = &ptr->next;
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old = list_pop(st_head(table), st_table_entry, olist);
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table->num_entries--;
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prev = &table->bins[hash_pos(old->hash, table->num_bins)];
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while ((ptr = *prev) != old) prev = &ptr->next;
|
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*prev = ptr->next;
|
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if (value != 0) *value = ptr->record;
|
||||
*key = ptr->key;
|
||||
remove_entry(table, ptr);
|
||||
st_free_entry(ptr);
|
||||
return 1;
|
||||
}
|
||||
|
|
@ -918,7 +887,8 @@ st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data
|
|||
int
|
||||
st_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t never)
|
||||
{
|
||||
st_table_entry *ptr, **last, *tmp;
|
||||
st_table_entry *ptr, **last, *tmp, *next;
|
||||
struct list_head *head;
|
||||
enum st_retval retval;
|
||||
st_index_t i;
|
||||
|
||||
|
|
@ -935,8 +905,10 @@ st_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t
|
|||
FIND_ENTRY(table, ptr, hash, i);
|
||||
if (retval == ST_CHECK) {
|
||||
if (!ptr) goto deleted;
|
||||
goto unpacked_continue;
|
||||
}
|
||||
if (table->num_entries == 0) return 0;
|
||||
head = st_head(table);
|
||||
next = list_entry(ptr->olist.next, st_table_entry, olist);
|
||||
goto unpacked;
|
||||
}
|
||||
switch (retval) {
|
||||
|
|
@ -961,14 +933,10 @@ st_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t
|
|||
}
|
||||
return 0;
|
||||
}
|
||||
else {
|
||||
ptr = table->head;
|
||||
}
|
||||
|
||||
if (ptr != 0) {
|
||||
do {
|
||||
if (ptr->key == never)
|
||||
goto unpacked_continue;
|
||||
head = st_head(table);
|
||||
list_for_each_safe(head, ptr, next, olist) {
|
||||
if (ptr->key != never) {
|
||||
i = hash_pos(ptr->hash, table->num_bins);
|
||||
retval = (*func)(ptr->key, ptr->record, arg, 0);
|
||||
unpacked:
|
||||
|
|
@ -984,8 +952,6 @@ st_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t
|
|||
}
|
||||
/* fall through */
|
||||
case ST_CONTINUE:
|
||||
unpacked_continue:
|
||||
ptr = ptr->fore;
|
||||
break;
|
||||
case ST_STOP:
|
||||
return 0;
|
||||
|
|
@ -993,16 +959,15 @@ st_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t
|
|||
last = &table->bins[hash_pos(ptr->hash, table->num_bins)];
|
||||
for (; (tmp = *last) != 0; last = &tmp->next) {
|
||||
if (ptr == tmp) {
|
||||
tmp = ptr->fore;
|
||||
remove_entry(table, ptr);
|
||||
ptr->key = ptr->record = never;
|
||||
ptr->hash = 0;
|
||||
ptr = tmp;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (table->num_entries == 0) return 0;
|
||||
}
|
||||
}
|
||||
} while (ptr && table->head);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1010,8 +975,9 @@ st_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t
|
|||
int
|
||||
st_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
||||
{
|
||||
st_table_entry *ptr, **last, *tmp;
|
||||
st_table_entry *ptr, **last, *tmp, *next;
|
||||
enum st_retval retval;
|
||||
struct list_head *head;
|
||||
st_index_t i;
|
||||
|
||||
if (table->entries_packed) {
|
||||
|
|
@ -1025,6 +991,8 @@ st_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
|||
if (!table->entries_packed) {
|
||||
FIND_ENTRY(table, ptr, hash, i);
|
||||
if (!ptr) return 0;
|
||||
head = st_head(table);
|
||||
next = list_entry(ptr->olist.next, st_table_entry, olist);
|
||||
goto unpacked;
|
||||
}
|
||||
switch (retval) {
|
||||
|
|
@ -1041,18 +1009,14 @@ st_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
|||
}
|
||||
return 0;
|
||||
}
|
||||
else {
|
||||
ptr = table->head;
|
||||
}
|
||||
|
||||
if (ptr != 0) {
|
||||
do {
|
||||
head = st_head(table);
|
||||
list_for_each_safe(head, ptr, next, olist) {
|
||||
i = hash_pos(ptr->hash, table->num_bins);
|
||||
retval = (*func)(ptr->key, ptr->record, arg, 0);
|
||||
unpacked:
|
||||
switch (retval) {
|
||||
case ST_CONTINUE:
|
||||
ptr = ptr->fore;
|
||||
break;
|
||||
case ST_CHECK:
|
||||
case ST_STOP:
|
||||
|
|
@ -1061,16 +1025,14 @@ st_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
|||
last = &table->bins[hash_pos(ptr->hash, table->num_bins)];
|
||||
for (; (tmp = *last) != 0; last = &tmp->next) {
|
||||
if (ptr == tmp) {
|
||||
tmp = ptr->fore;
|
||||
*last = ptr->next;
|
||||
remove_entry(table, ptr);
|
||||
st_free_entry(ptr);
|
||||
ptr = tmp;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (table->num_entries == 0) return 0;
|
||||
}
|
||||
} while (ptr && table->head);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1092,9 +1054,11 @@ get_keys(st_table *table, st_data_t *keys, st_index_t size, int check, st_data_t
|
|||
}
|
||||
}
|
||||
else {
|
||||
st_table_entry *ptr = table->head;
|
||||
st_table_entry *ptr;
|
||||
st_data_t *keys_end = keys + size;
|
||||
for (; ptr && keys < keys_end; ptr = ptr->fore) {
|
||||
|
||||
list_for_each(st_head(table), ptr, olist) {
|
||||
if (keys >= keys_end) break;
|
||||
key = ptr->key;
|
||||
if (check && key == never) continue;
|
||||
*keys++ = key;
|
||||
|
|
@ -1133,9 +1097,11 @@ get_values(st_table *table, st_data_t *values, st_index_t size, int check, st_da
|
|||
}
|
||||
}
|
||||
else {
|
||||
st_table_entry *ptr = table->head;
|
||||
st_table_entry *ptr;
|
||||
st_data_t *values_end = values + size;
|
||||
for (; ptr && values < values_end; ptr = ptr->fore) {
|
||||
|
||||
list_for_each(st_head(table), ptr, olist) {
|
||||
if (values >= values_end) break;
|
||||
key = ptr->key;
|
||||
if (check && key == never) continue;
|
||||
*values++ = ptr->record;
|
||||
|
|
@ -1161,7 +1127,8 @@ st_values_check(st_table *table, st_data_t *values, st_index_t size, st_data_t n
|
|||
int
|
||||
st_reverse_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, st_data_t never)
|
||||
{
|
||||
st_table_entry *ptr, **last, *tmp;
|
||||
st_table_entry *ptr, **last, *tmp, *next;
|
||||
struct list_head *head;
|
||||
enum st_retval retval;
|
||||
st_index_t i;
|
||||
|
||||
|
|
@ -1179,8 +1146,10 @@ st_reverse_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, s
|
|||
FIND_ENTRY(table, ptr, hash, i);
|
||||
if (retval == ST_CHECK) {
|
||||
if (!ptr) goto deleted;
|
||||
goto unpacked_continue;
|
||||
}
|
||||
if (table->num_entries == 0) return 0;
|
||||
head = st_head(table);
|
||||
next = list_entry(ptr->olist.next, st_table_entry, olist);
|
||||
goto unpacked;
|
||||
}
|
||||
switch (retval) {
|
||||
|
|
@ -1205,14 +1174,10 @@ st_reverse_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, s
|
|||
}
|
||||
return 0;
|
||||
}
|
||||
else {
|
||||
ptr = table->tail;
|
||||
}
|
||||
|
||||
if (ptr != 0) {
|
||||
do {
|
||||
if (ptr->key == never)
|
||||
goto unpacked_continue;
|
||||
head = st_head(table);
|
||||
list_for_each_rev_safe(head, ptr, next, olist) {
|
||||
if (ptr->key != never) {
|
||||
i = hash_pos(ptr->hash, table->num_bins);
|
||||
retval = (*func)(ptr->key, ptr->record, arg, 0);
|
||||
unpacked:
|
||||
|
|
@ -1228,8 +1193,6 @@ st_reverse_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, s
|
|||
}
|
||||
/* fall through */
|
||||
case ST_CONTINUE:
|
||||
unpacked_continue:
|
||||
ptr = ptr->back;
|
||||
break;
|
||||
case ST_STOP:
|
||||
return 0;
|
||||
|
|
@ -1237,16 +1200,15 @@ st_reverse_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, s
|
|||
last = &table->bins[hash_pos(ptr->hash, table->num_bins)];
|
||||
for (; (tmp = *last) != 0; last = &tmp->next) {
|
||||
if (ptr == tmp) {
|
||||
tmp = ptr->back;
|
||||
remove_entry(table, ptr);
|
||||
ptr->key = ptr->record = never;
|
||||
ptr->hash = 0;
|
||||
ptr = tmp;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (table->num_entries == 0) return 0;
|
||||
}
|
||||
}
|
||||
} while (ptr && table->head);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1254,8 +1216,9 @@ st_reverse_foreach_check(st_table *table, int (*func)(ANYARGS), st_data_t arg, s
|
|||
int
|
||||
st_reverse_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
||||
{
|
||||
st_table_entry *ptr, **last, *tmp;
|
||||
st_table_entry *ptr, **last, *tmp, *next;
|
||||
enum st_retval retval;
|
||||
struct list_head *head;
|
||||
st_index_t i;
|
||||
|
||||
if (table->entries_packed) {
|
||||
|
|
@ -1270,6 +1233,8 @@ st_reverse_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
|||
if (!table->entries_packed) {
|
||||
FIND_ENTRY(table, ptr, hash, i);
|
||||
if (!ptr) return 0;
|
||||
head = st_head(table);
|
||||
next = list_entry(ptr->olist.next, st_table_entry, olist);
|
||||
goto unpacked;
|
||||
}
|
||||
switch (retval) {
|
||||
|
|
@ -1285,18 +1250,14 @@ st_reverse_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
|||
}
|
||||
return 0;
|
||||
}
|
||||
else {
|
||||
ptr = table->tail;
|
||||
}
|
||||
|
||||
if (ptr != 0) {
|
||||
do {
|
||||
head = st_head(table);
|
||||
list_for_each_rev_safe(head, ptr, next, olist) {
|
||||
i = hash_pos(ptr->hash, table->num_bins);
|
||||
retval = (*func)(ptr->key, ptr->record, arg, 0);
|
||||
unpacked:
|
||||
switch (retval) {
|
||||
case ST_CONTINUE:
|
||||
ptr = ptr->back;
|
||||
break;
|
||||
case ST_CHECK:
|
||||
case ST_STOP:
|
||||
|
|
@ -1305,16 +1266,14 @@ st_reverse_foreach(st_table *table, int (*func)(ANYARGS), st_data_t arg)
|
|||
last = &table->bins[hash_pos(ptr->hash, table->num_bins)];
|
||||
for (; (tmp = *last) != 0; last = &tmp->next) {
|
||||
if (ptr == tmp) {
|
||||
tmp = ptr->back;
|
||||
*last = ptr->next;
|
||||
remove_entry(table, ptr);
|
||||
st_free_entry(ptr);
|
||||
ptr = tmp;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (table->num_entries == 0) return 0;
|
||||
}
|
||||
} while (ptr && table->head);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче