#include "mem.h"
#include "hashtable.h"
-#define GET_PTR(x) ((void *)(size_t)((x) & MASK(48))) // low-order 48 bits is a pointer to a nstring_t
+#define GET_PTR(x) ((void *)((x) & MASK(48))) // low-order 48 bits is a pointer to a nstring_t
typedef struct entry {
- uint64_t key;
+ map_key_t key;
map_val_t val;
} entry_t;
for (int j = 0; j < ENTRIES_PER_BUCKET; ++j) {
volatile entry_t *ent = bucket + ((ndx + j) & (ENTRIES_PER_BUCKET-1));
- uint64_t ent_key = ent->key;
+ map_key_t ent_key = ent->key;
if (ent_key == DOES_NOT_EXIST) {
TRACE("h1", "hti_lookup: entry %p for key %p is empty", ent,
(hti->ht->key_type == NULL) ? (void *)ent_key : GET_PTR(ent_key));
// Compare <key> with the key in the entry.
if (EXPECT_TRUE(hti->ht->key_type == NULL)) {
// fast path for integer keys
- if (ent_key == (uint64_t)key) {
+ if (ent_key == key) {
TRACE("h1", "hti_lookup: found entry %p with key %p", ent, ent_key);
return ent;
}
// high-order 16 bits are taken from the hash. The bits from the hash are used as a
// quick check to rule out non-equal keys without doing a complete compare.
if ((key_hash >> 16) == (ent_key >> 48)) {
- if (hti->ht->key_type->cmp(GET_PTR(ent_key), (void *)(size_t)key) == 0) {
+ if (hti->ht->key_type->cmp(GET_PTR(ent_key), (void *)key) == 0) {
TRACE("h1", "hti_lookup: found entry %p with key %p", ent, GET_PTR(ent_key));
return ent;
}
TRACE("h0", "hti_start_copy(hti %p scale %llu)", hti, hti->scale);
// heuristics to determine the size of the new table
- uint64_t count = ht_count(hti->ht);
+ size_t count = ht_count(hti->ht);
unsigned int new_scale = hti->scale;
new_scale += (count > (1 << (new_scale - 2))); // double size if more than 1/4 full
new_scale += (count > (1 << (new_scale - 2))); // double size again if more than 1/2 full
}
// Install the key in the new table.
- uint64_t ht1_ent_key = ht1_ent->key;
- map_key_t key = (ht1->ht->key_type == NULL) ? (map_key_t)ht1_ent_key : (map_key_t)(size_t)GET_PTR(ht1_ent_key);
+ map_key_t ht1_ent_key = ht1_ent->key;
+ map_key_t key = (ht1->ht->key_type == NULL) ? (map_key_t)ht1_ent_key : (map_key_t)GET_PTR(ht1_ent_key);
// The old table's dead entries don't need to be copied to the new table, but their keys need to be freed.
assert(COPIED_VALUE == TAG_VALUE(TOMBSTONE, TAG1));
if (ht1_ent_val == TOMBSTONE) {
TRACE("h1", "hti_copy_entry: entry %p old value was deleted, now freeing key %p", ht1_ent, key);
if (EXPECT_FALSE(ht1->ht->key_type != NULL)) {
- nbd_defer_free((void *)(size_t)key);
+ nbd_defer_free((void *)key);
}
return TRUE;
}
if (key_hash == 0) {
key_hash = (ht1->ht->key_type == NULL)
? murmur32_8b(ht1_ent_key)
- : ht1->ht->key_type->hash((void *)(size_t)key);
+ : ht1->ht->key_type->hash((void *)key);
}
int ht2_ent_is_empty;
}
if (ht2_ent_is_empty) {
- uint64_t old_ht2_ent_key = SYNC_CAS(&ht2_ent->key, DOES_NOT_EXIST, ht1_ent_key);
+ map_key_t old_ht2_ent_key = SYNC_CAS(&ht2_ent->key, DOES_NOT_EXIST, ht1_ent_key);
if (old_ht2_ent_key != DOES_NOT_EXIST) {
TRACE("h0", "hti_copy_entry: lost race to CAS key %p into new entry; found %p",
ht1_ent_key, old_ht2_ent_key);
return DOES_NOT_EXIST;
// Allocate <new_key>.
- uint64_t new_key = (uint64_t)((hti->ht->key_type == NULL) ? key : (map_key_t)(size_t)hti->ht->key_type->clone((void *)(size_t)key));
+ map_key_t new_key = (hti->ht->key_type == NULL)
+ ? (map_key_t)key
+ : (map_key_t)hti->ht->key_type->clone((void *)key);
if (EXPECT_FALSE(hti->ht->key_type != NULL)) {
// Combine <new_key> pointer with bits from its hash
new_key = ((uint64_t)(key_hash >> 16) << 48) | new_key;
}
// CAS the key into the table.
- uint64_t old_ent_key = SYNC_CAS(&ent->key, DOES_NOT_EXIST, new_key);
+ map_key_t old_ent_key = SYNC_CAS(&ent->key, DOES_NOT_EXIST, new_key);
// Retry if another thread stole the entry out from under us.
if (old_ent_key != DOES_NOT_EXIST) {
//
map_val_t ht_get (hashtable_t *ht, map_key_t key) {
- uint32_t hash = (ht->key_type == NULL) ? murmur32_8b((uint64_t)key) : ht->key_type->hash((void *)(size_t)key);
+ uint32_t hash = (ht->key_type == NULL) ? murmur32_8b((uint64_t)key) : ht->key_type->hash((void *)key);
return hti_get(ht->hti, key, hash);
}
// returns TRUE if copy is done
int hti_help_copy (hti_t *hti) {
volatile entry_t *ent;
- uint64_t limit;
- uint64_t total_copied = hti->num_entries_copied;
- uint64_t num_copied = 0;
- uint64_t x = hti->copy_scan;
+ size_t limit;
+ size_t total_copied = hti->num_entries_copied;
+ size_t num_copied = 0;
+ size_t x = hti->copy_scan;
TRACE("h1", "ht_cas: help copy. scan is %llu, size is %llu", x, 1<<hti->scale);
if (total_copied != (1 << hti->scale)) {
}
map_val_t old_val;
- uint32_t key_hash = (ht->key_type == NULL) ? murmur32_8b((uint64_t)key) : ht->key_type->hash((void *)(size_t)key);
+ uint32_t key_hash = (ht->key_type == NULL) ? murmur32_8b((uint64_t)key) : ht->key_type->hash((void *)key);
while ((old_val = hti_cas(hti, key, key_hash, expected_val, new_val)) == COPIED_VALUE) {
assert(hti->next);
hti = hti->next;
map_val_t ht_remove (hashtable_t *ht, map_key_t key) {
hti_t *hti = ht->hti;
map_val_t val;
- uint32_t key_hash = (ht->key_type == NULL) ? murmur32_8b((uint64_t)key) : ht->key_type->hash((void *)(size_t)key);
+ uint32_t key_hash = (ht->key_type == NULL) ? murmur32_8b((uint64_t)key) : ht->key_type->hash((void *)key);
do {
val = hti_cas(hti, key, key_hash, CAS_EXPECT_WHATEVER, DOES_NOT_EXIST);
if (val != COPIED_VALUE)
}
// Returns the number of key-values pairs in <ht>
-uint64_t ht_count (hashtable_t *ht) {
+size_t ht_count (hashtable_t *ht) {
hti_t *hti = ht->hti;
- uint64_t count = 0;
+ size_t count = 0;
while (hti) {
count += hti->count;
hti = hti->next;
volatile entry_t *ent;
map_key_t key;
map_val_t val;
- uint64_t table_size = (1 << iter->hti->scale);
+ size_t table_size = (1 << iter->hti->scale);
do {
iter->idx++;
if (iter->idx == table_size) {
return DOES_NOT_EXIST;
}
ent = &iter->hti->table[iter->idx];
- key = (iter->hti->ht->key_type == NULL) ? (map_key_t)ent->key : (map_key_t)(size_t)GET_PTR(ent->key);
+ key = (iter->hti->ht->key_type == NULL) ? (map_key_t)ent->key : (map_key_t)GET_PTR(ent->key);
val = ent->val;
} while (key == DOES_NOT_EXIST || val == DOES_NOT_EXIST || val == TOMBSTONE);
if (val == COPIED_VALUE) {
uint32_t hash = (iter->hti->ht->key_type == NULL)
? murmur32_8b((uint64_t)key)
- : iter->hti->ht->key_type->hash((void *)(size_t)key);
+ : iter->hti->ht->key_type->hash((void *)key);
val = hti_get(iter->hti->next, (map_key_t)ent->key, hash);
}
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