Re-implemented pageOrientedListNTA from scratch. It's now more flexible, but relies on features that are not provided by Talloc/Tdealloc, so performance isn't as good as it could be.
This commit is contained in:
Sears Russell
parent
4d04155b0e
commit
7cf5fdee6e
9 changed files with 251 additions and 266 deletions
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@ -43,8 +43,13 @@ terms specified in this license.
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/**
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@file
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A linked list implementation designed to handle variable length entries, and
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minimize the number of pages spanned by each list.
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A linked list implementation designed to handle variable length
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entries, and minimize the number of pages spanned by each list.
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This linked list implementation is currently used to implement
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buckets for the linear hash table. Unfortunately, due to
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limitations in the allocation mechanisms, the full benefits of this
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linked list implementation are not available to the linear hash
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table.
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The data is stored using the slotted page implementation.
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@ -59,12 +64,23 @@ terms specified in this license.
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#define __pageOrientedListNTA_H
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typedef struct {
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long page;
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//typedef struct {
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// long page;
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/* The slot of the next record to be returned. */
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int slot;
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// int slot;
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//} lladd_pagedList_iterator;
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typedef struct {
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recordid headerRid;
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recordid entryRid;
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} lladd_pagedList_iterator;
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typedef struct {
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short thisPage;
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recordid nextPage;
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} pagedListHeader;
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//recordid dereferencePagedListRID(int xid, recordid rid);
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/** @return 1 if the key was already in the list. */
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int TpagedListInsert(int xid, recordid list, const byte * key, int keySize, const byte * value, int valueSize);
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@ -143,7 +143,11 @@ recordid TallocFromPage(int xid, long page, long size) {
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} else {
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pthread_mutex_lock(&talloc_mutex);
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rid = slottedPreRallocFromPage(xid, page, size, &p);
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assert(p != NULL);
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if(p == NULL) {
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assert(rid.size == -1);
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pthread_mutex_unlock(&talloc_mutex);
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return rid;
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}
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}
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Tupdate(xid,rid, NULL, OPERATION_ALLOC);
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@ -1,10 +1,13 @@
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#define __USE_GNU
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#define _GNU_SOURCE
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#include <pthread.h>
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#include <lladd/transactional.h>
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#include <lladd/hash.h>
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#include "../page.h"
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#include "../page/slotted.h"
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#include <stdlib.h>
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#include <assert.h>
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#include <string.h>
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#define __USE_GNU
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#include <pthread.h>
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static pthread_mutex_t linear_hash_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
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@ -38,7 +41,7 @@ recordid ThashCreate(int xid, int keySize, int valueSize) {
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recordid hashHeader = Talloc(xid, sizeof(lladd_hash_header));
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lladd_hash_header lhh;
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if(keySize == VARIABLE_LENGTH || valueSize == VARIABLE_LENGTH) {
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lhh.buckets = TarrayListAlloc(xid, HASH_INIT_ARRAY_LIST_COUNT, HASH_INIT_ARRAY_LIST_MULT, sizeof(long));
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lhh.buckets = TarrayListAlloc(xid, HASH_INIT_ARRAY_LIST_COUNT, HASH_INIT_ARRAY_LIST_MULT, sizeof(pagedListHeader));
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} else {
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lhh.buckets = TarrayListAlloc(xid, HASH_INIT_ARRAY_LIST_COUNT, HASH_INIT_ARRAY_LIST_MULT, sizeof(lladd_linkedList_entry) + keySize + valueSize);
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}
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@ -49,7 +52,7 @@ recordid ThashCreate(int xid, int keySize, int valueSize) {
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for(i = 0; i < HASH_INIT_ARRAY_LIST_COUNT; i++) {
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recordid rid = TpagedListAlloc(xid);
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bucket.slot = i;
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Tset(xid, bucket, &(rid.page));
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Tset(xid, bucket, &rid);
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}
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} else {
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byte * entry = calloc(1, lhh.buckets.size);
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@ -152,9 +155,9 @@ static int __ThashInsert(int xid, recordid hashHeader, const byte* key, int keyS
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lhh.numEntries ++;
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if(lhh.keySize == VARIABLE_LENGTH || lhh.valueSize == VARIABLE_LENGTH) {
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/* if(lhh.numEntries > (int)((double)(lhh.nextSplit + twoToThe(lhh.bits-1)) * (HASH_FILL_FACTOR * 40))) {
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if(lhh.numEntries > (int)((double)(lhh.nextSplit + twoToThe(lhh.bits-1)) * (HASH_FILL_FACTOR))) {
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ThashSplitBucket(xid, hashHeader, &lhh);
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} */
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}
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} else {
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if(lhh.numEntries > (int)((double)(lhh.nextSplit + twoToThe(lhh.bits-1)) * HASH_FILL_FACTOR)) {
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ThashSplitBucket(xid, hashHeader, &lhh);
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@ -168,15 +171,15 @@ static int __ThashInsert(int xid, recordid hashHeader, const byte* key, int keyS
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if(lhh.keySize == VARIABLE_LENGTH || lhh.valueSize == VARIABLE_LENGTH) {
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recordid bucketList;
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Tread(xid, bucket, &(bucketList.page));
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bucketList.slot = 0;
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bucketList.size = 0;
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// int before = TpagedListSpansPages(xid, bucketList);
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Tread(xid, bucket, &bucketList);
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// int before = TpagedListSpansPages(xid, bucketList);
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ret = TpagedListInsert(xid, bucketList, key, keySize, value, valueSize);
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int after = TpagedListSpansPages(xid, bucketList);
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if(after) { // Page overflowed...
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ThashSplitBucket(xid, hashHeader, &lhh);
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}
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// int after = TpagedListSpansPages(xid, bucketList);
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// if(before != after) { // Page overflowed...
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// ThashSplitBucket(xid, hashHeader, &lhh);
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// ThashSplitBucket(xid, hashHeader, &lhh);
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// }
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} else {
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assert(lhh.keySize == keySize); assert(lhh.valueSize == valueSize);
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@ -229,9 +232,7 @@ static int __ThashRemove(int xid, recordid hashHeader, const byte * key, int key
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int ret;
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if(lhh.keySize == VARIABLE_LENGTH || lhh.valueSize == VARIABLE_LENGTH) {
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recordid bucketList;
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Tread(xid, bucket, &(bucketList.page));
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bucketList.slot = 0;
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bucketList.size = 0;
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Tread(xid, bucket, &bucketList);
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ret = TpagedListRemove(xid, bucketList, key, keySize);
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} else {
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assert(lhh.keySize == keySize);
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@ -252,9 +253,7 @@ int ThashLookup(int xid, recordid hashHeader, const byte * key, int keySize, byt
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int ret;
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if(lhh.keySize == VARIABLE_LENGTH || lhh.valueSize == VARIABLE_LENGTH) {
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recordid bucketList;
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Tread(xid, bucket, &(bucketList.page));
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bucketList.slot = 0;
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bucketList.size = 0;
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Tread(xid, bucket, &bucketList);
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ret = TpagedListFind(xid, bucketList, key, keySize, value);
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} else {
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assert(lhh.keySize == keySize);
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@ -264,7 +263,7 @@ int ThashLookup(int xid, recordid hashHeader, const byte * key, int keySize, byt
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return ret;
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}
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static void ThashSplitBucket(int xid, recordid hashHeader, lladd_hash_header * lhh) {
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// if(1) { return; }
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// if(1) { return; }
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long old_bucket = lhh->nextSplit;
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long new_bucket = old_bucket + twoToThe(lhh->bits-1);
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recordid old_bucket_rid = lhh->buckets;
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@ -276,7 +275,7 @@ static void ThashSplitBucket(int xid, recordid hashHeader, lladd_hash_header * l
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recordid new_bucket_list; // will be uninitialized if we have fixed length entries.
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if(lhh->keySize == VARIABLE_LENGTH || lhh->valueSize == VARIABLE_LENGTH) {
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new_bucket_list = TpagedListAlloc(xid);
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Tset(xid, new_bucket_rid, &(new_bucket_list.page));
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Tset(xid, new_bucket_rid, &new_bucket_list);
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} else {
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byte * entry = calloc(1, lhh->buckets.size);
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Tset(xid, new_bucket_rid, entry);
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@ -292,9 +291,8 @@ static void ThashSplitBucket(int xid, recordid hashHeader, lladd_hash_header * l
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if(lhh->keySize == VARIABLE_LENGTH || lhh->valueSize == VARIABLE_LENGTH) {
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recordid old_bucket_list;
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// recordid new_bucket_list;
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Tread(xid, old_bucket_rid, &(old_bucket_list.page));
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old_bucket_list.slot = 0;
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old_bucket_list.size = 0;
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Tread(xid, old_bucket_rid, &old_bucket_list);
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// Tread(xid, new_bucket_rid, &(new_bucket_list.page)); // @todo could remember value from above.
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lladd_pagedList_iterator * pit = TpagedListIterator(xid, old_bucket_list);
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byte *key, *value;
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@ -363,9 +361,7 @@ int ThashNext(int xid, lladd_hash_iterator * it, byte ** key, int * keySize, byt
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it->bucket.slot++;
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if(it->bucket.slot < it->numBuckets) {
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recordid bucketList;
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Tread(xid, it->bucket, &(bucketList.page));
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bucketList.slot =0;
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bucketList.size =0;
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Tread(xid, it->bucket, &bucketList);
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it->pit = TpagedListIterator(xid, bucketList);
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} else {
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free(it);
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@ -1,216 +1,173 @@
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#include <lladd/transactional.h>
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#include "../blobManager.h"
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#include "../page.h"
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#include "../page/slotted.h"
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#include <malloc.h>
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#include <assert.h>
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#include <string.h>
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/**
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Low level function that looks at the page structure, and finds the 'real' recordid
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of a page oriented list rid */
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/*recordid dereferencePagedListRID(int xid, recordid rid) {
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Page * p = loadPage(rid.page);
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while((*numslots_ptr(p)-POLL_NUM_RESERVED) <= rid.slot) {
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int oldSlot = rid.slot;
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oldSlot -= (*numslots_ptr(p) - POLL_NUM_RESERVED);
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rid.slot = POLL_NEXT;
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readRecord(xid, p , rid, &rid);
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rid.slot = oldSlot;
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releasePage(p);
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p = loadPage(rid.page);
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}
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releasePage(p);
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rid.slot+=POLL_NUM_RESERVED;
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return rid;
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}*/
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typedef struct {
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short nextEntry;
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short keySize;
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} pagedListEntry;
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recordid TpagedListAlloc(int xid) {
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long page = TpageAlloc(xid);
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recordid list = TallocFromPage(xid, page, sizeof(long));
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long zero = 0;
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Tset(xid, list, &zero);
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assert(list.slot == 0);
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assert(list.size == sizeof(long));
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return list;
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recordid NULLRID;
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NULLRID.page = 0;
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NULLRID.slot = 0;
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NULLRID.size = -1;
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recordid ret = Talloc(xid, sizeof(pagedListHeader));
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pagedListHeader header;
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header.thisPage = 0;
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header.nextPage = NULLRID;
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Tset(xid, ret, &header);
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return ret;
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}
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int TpagedListSpansPages(int xid, recordid list) {
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// TpagedListCompact(int xid, recordid list);
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list.slot = 0;
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list.size = sizeof(long);
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long nextPage;
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Tread(xid, list, &nextPage);
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return nextPage != 0;
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}
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/** Should have write lock on page for this whole function. */
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int TpagedListInsert(int xid, recordid list, const byte * key, int keySize, const byte * value, int valueSize) {
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int ret = 0;
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// if find in list, return 1
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byte * val;
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if(-1 != TpagedListFind(xid, list, key, keySize, &val)) {
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free(val);
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ret = 1;
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int removed = TpagedListRemove(xid, list, key, keySize);
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assert(removed);
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}
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Page * p = loadPage(list.page);
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int recordSize = (sizeof(short)+keySize+valueSize);
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int isBlob = recordSize >= BLOB_THRESHOLD_SIZE;
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int realSize = recordSize;
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if(isBlob) {
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recordSize = sizeof(blob_record_t);
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}
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pagedListHeader header;
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Tread(xid, list, &header);
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recordid headerRid = list;
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while(slottedFreespace(p) < recordSize) {
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// load next page, update some rid somewhere
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list.slot = 0;
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list.size = sizeof(long);
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long nextPage;
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readRecord(xid, p, list, &nextPage);
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// printf("+ page = %d nextpage=%ld freespace: %d recordsize: %d\n", list.page, nextPage, slottedFreespace(p), recordSize); fflush(stdout);
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if(nextPage == 0) {
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releasePage(p);
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nextPage = TpageAlloc(xid);
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Tset(xid, list, &nextPage);
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p = loadPage(nextPage);
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//slottedPageInitialize(p);
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// ** @todo shouldn't a log entry be generated here?? */
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list.page = nextPage;
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assert(slottedFreespace(p) >= recordSize);
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long zero = 0;
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recordid rid = TallocFromPage(xid, list.page, sizeof(long));
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Tset(xid, rid, &zero);
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} else {
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releasePage(p);
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list.page = nextPage;
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p = loadPage(nextPage);
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byte * garbage;
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int ret = (TpagedListFind(xid, list, key, keySize, &garbage) != -1);
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if(ret) {
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TpagedListRemove(xid, list, key, keySize);
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free(garbage);
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}
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int entrySize = sizeof(pagedListEntry) + keySize + valueSize;
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recordid rid = TallocFromPage(xid, headerRid.page, entrySize);
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DEBUG("Alloced rid: {%d %d %d}", rid.page, rid.slot, rid.size);
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// When the loop completes, header will contain the contents of the page header the entry will be inserted into,
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// headerrid will contain the rid of that header, and rid will contain the newly allocated recordid
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while(rid.size == -1) {
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if(header.nextPage.size == -1) {
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header.nextPage = Talloc(xid, sizeof(pagedListHeader));
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DEBUG("allocing on new page %d\n", header.nextPage.page);
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Tset(xid, headerRid, &header);
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pagedListHeader newHead;
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newHead.thisPage = 0;
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newHead.nextPage.page =0;
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newHead.nextPage.slot =0;
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newHead.nextPage.size =-1;
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Tset(xid, header.nextPage, &newHead);
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}
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headerRid = header.nextPage;
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Tread(xid, header.nextPage, &header);
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rid = TallocFromPage(xid, headerRid.page, entrySize);
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DEBUG("Alloced rid: {%d %d %d}", rid.page, rid.slot, rid.size);
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}
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if(isBlob) {
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recordSize = realSize;
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}
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pagedListEntry * dat = malloc(entrySize);
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releasePage(p);
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// printf("recordsize = %d\n", recordSize);
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recordid rid = TallocFromPage(xid, list.page, recordSize); // Allocates a record at a location given by the caller
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short* record = malloc(recordSize);
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*record = keySize;
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memcpy((record+1), key, keySize);
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memcpy(((char*)(record+1))+keySize, value, valueSize);
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Tset(xid, rid, record);
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dat->keySize = keySize;
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dat->nextEntry = header.thisPage;
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memcpy(dat+1, key, keySize);
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memcpy(((byte*)(dat+1))+keySize, value, valueSize);
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Tset(xid, rid, dat);
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header.thisPage = rid.slot;
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DEBUG("Header.thisPage = %d\n", rid.slot);
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Tset(xid, headerRid, &header);
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free(dat);
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return ret;
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}
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int TpagedListFind(int xid, recordid list, const byte * key, int keySize, byte ** value) {
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pagedListHeader header;
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Tread(xid, list, &header);
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long nextPage = 1;
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recordid rid;
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rid.page = list.page;
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rid.slot = header.thisPage;
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while (nextPage) {
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int i;
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while(rid.slot || header.nextPage.size != -1) {
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rid.size = TrecordSize(xid, rid);
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Page * p = loadPage(list.page);
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pagedListEntry * dat = malloc(rid.size);
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Tread(xid, rid, dat);
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// int pageCount = TrecordsInPage(xid, list.page);
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int pageCount = *numslots_ptr(p);
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// printf("%ld\n", nextPage);
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//fflush(stdout);
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for(i = 1; i < pageCount; i++) {
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recordid entry = list;
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entry.slot = i;
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// int length = TrecordSize(xid, entry);
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int length = getRecordSize(xid,p,entry);
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if(length != -1) { // then entry is defined.
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short * dat = malloc(length);
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entry.size = length;
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// Tread(xid, entry, dat);
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slottedRead(xid, p, entry, (byte*)dat);
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if(*dat == keySize && !memcmp(dat+1, key, keySize)) {
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int valueSize = length-keySize-sizeof(short);
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*value = malloc(valueSize);
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memcpy(*value, ((byte*)(dat+1))+keySize, valueSize);
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free(dat);
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releasePage(p);
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return valueSize;
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}
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free(dat);
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}
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if(!memcmp(dat+1, key, keySize)) {
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int valueSize = rid.size - keySize - sizeof(pagedListEntry);
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*value = malloc(valueSize);
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memcpy(*value, ((byte*)(dat+1))+keySize, valueSize);
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free(dat);
|
||||
return valueSize;
|
||||
}
|
||||
if(dat->nextEntry) { // another entry on this page
|
||||
rid.slot = dat->nextEntry;
|
||||
} else if (header.nextPage.size != -1) { // another page
|
||||
rid.page = header.nextPage.page;
|
||||
Tread(xid, header.nextPage, &header);
|
||||
rid.slot = header.thisPage;
|
||||
} else { // we've reached the end of the last page
|
||||
rid.slot = 0;
|
||||
}
|
||||
|
||||
|
||||
// recordid rid = list;
|
||||
|
||||
list.slot = 0;
|
||||
list.size = sizeof(long);
|
||||
|
||||
// Tread(xid, list, &nextPage);
|
||||
slottedRead(xid, p, list, (byte*)&nextPage);
|
||||
|
||||
list.page = nextPage;
|
||||
|
||||
releasePage(p);
|
||||
|
||||
|
||||
free(dat);
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
int TpagedListRemove(int xid, recordid list, const byte * key, int keySize) {
|
||||
long nextPage = 1;
|
||||
pagedListHeader header;
|
||||
Tread(xid, list, &header);
|
||||
recordid headerRid;
|
||||
recordid rid;
|
||||
rid.page = list.page;
|
||||
rid.slot = header.thisPage;
|
||||
short lastSlot = -1;
|
||||
headerRid = list;
|
||||
while(rid.slot || header.nextPage.size != -1) {
|
||||
rid.size = TrecordSize(xid, rid);
|
||||
pagedListEntry * dat = malloc(rid.size);
|
||||
Tread(xid, rid, dat);
|
||||
|
||||
while (nextPage) {
|
||||
int i;
|
||||
if(!memcmp(dat+1, key, keySize)) {
|
||||
|
||||
Page * p = loadPage(list.page);
|
||||
|
||||
// int pageCount = TrecordsInPage(xid, list.page);
|
||||
int pageCount = *numslots_ptr(p);
|
||||
|
||||
// printf("%ld\n", nextPage);
|
||||
fflush(stdout);
|
||||
|
||||
for(i = 1; i < pageCount; i++) {
|
||||
recordid entry = list;
|
||||
entry.slot = i;
|
||||
// int length = TrecordSize(xid, entry);
|
||||
int length = getRecordSize(xid, p, entry);
|
||||
if(length != -1) { // then entry is defined.
|
||||
short * dat = malloc(length);
|
||||
entry.size = length;
|
||||
|
||||
slottedRead(xid,p,entry,(byte*)dat);
|
||||
|
||||
// Tread(xid, entry, dat);
|
||||
|
||||
if(*dat == keySize && !memcmp(dat+1, key, keySize)) {
|
||||
releasePage(p);
|
||||
Tdealloc(xid, entry);
|
||||
// assert(-1 == TrecordSize(xid, entry));
|
||||
free(dat);
|
||||
return 1;
|
||||
}
|
||||
free(dat);
|
||||
if(lastSlot != -1) {
|
||||
recordid lastRid = rid;
|
||||
lastRid.slot = lastSlot;
|
||||
lastRid.size = TrecordSize(xid, lastRid);
|
||||
pagedListEntry * lastRidBuf = malloc(lastRid.size);
|
||||
Tread(xid, lastRid, lastRidBuf);
|
||||
lastRidBuf->nextEntry = dat->nextEntry;
|
||||
Tset(xid, lastRid, lastRidBuf);
|
||||
free(lastRidBuf);
|
||||
} else {
|
||||
header.thisPage = dat->nextEntry;
|
||||
Tset(xid, headerRid, &header);
|
||||
}
|
||||
Tdealloc(xid, rid);
|
||||
free(dat);
|
||||
return 1;
|
||||
}
|
||||
if(dat->nextEntry) { // another entry on this page
|
||||
lastSlot = rid.slot;
|
||||
rid.slot = dat->nextEntry;
|
||||
} else if (header.nextPage.size != -1) { // another page
|
||||
lastSlot = -1;
|
||||
rid.page = header.nextPage.page;
|
||||
headerRid = header.nextPage;
|
||||
Tread(xid, header.nextPage, &header);
|
||||
rid.slot = header.thisPage;
|
||||
} else { // we've reached the end of the last page
|
||||
rid.slot = 0;
|
||||
}
|
||||
|
||||
list.slot = 0;
|
||||
list.size = sizeof(long);
|
||||
|
||||
// Tread(xid, list, &nextPage);
|
||||
slottedRead(xid,p,list, (byte*)&nextPage);
|
||||
|
||||
list.page = nextPage;
|
||||
releasePage(p);
|
||||
free(dat);
|
||||
}
|
||||
return 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
int TpagedListMove(int xid, recordid start_list, recordid end_list, const byte *key, int keySize) {
|
||||
|
||||
int TpagedListMove(int xid, recordid start_list, recordid end_list, const byte * key, int keySize) {
|
||||
byte * value;
|
||||
int valueSize = TpagedListFind(xid, start_list, key, keySize, &value);
|
||||
if(valueSize != -1) {
|
||||
|
|
@ -226,56 +183,53 @@ int TpagedListMove(int xid, recordid start_list, recordid end_list, const byte *
|
|||
}
|
||||
|
||||
lladd_pagedList_iterator * TpagedListIterator(int xid, recordid list) {
|
||||
lladd_pagedList_iterator * ret = malloc(sizeof(lladd_pagedList_iterator));
|
||||
pagedListHeader header;
|
||||
Tread(xid, list, &header);
|
||||
lladd_pagedList_iterator * it = malloc(sizeof(lladd_pagedList_iterator));
|
||||
|
||||
ret->page = list.page;
|
||||
ret->slot = 1;
|
||||
it->headerRid = header.nextPage;
|
||||
it->entryRid = list;
|
||||
// printf("slot <- %d\n", header.thisPage);
|
||||
it->entryRid.slot = header.thisPage;
|
||||
|
||||
return ret;
|
||||
return it;
|
||||
}
|
||||
|
||||
int TpagedListNext(int xid, lladd_pagedList_iterator * it,
|
||||
byte ** key, int * keySize,
|
||||
byte ** value, int * valueSize) {
|
||||
// printf("next: page %d slot %d\n", it->page, it->slot);
|
||||
recordid rid;
|
||||
while(it->page) {
|
||||
while(it->slot < TrecordsInPage(xid, it->page)) {
|
||||
rid.page = it->page;
|
||||
rid.slot = it->slot;
|
||||
rid.size=TrecordSize(xid, rid);
|
||||
if(rid.size != -1) {
|
||||
// found entry!
|
||||
while(it->entryRid.slot || it->headerRid.size != -1) {
|
||||
if(it->entryRid.slot) {
|
||||
it->entryRid.size = TrecordSize(xid, it->entryRid);
|
||||
assert(it->entryRid.size != -1);
|
||||
|
||||
byte * dat = malloc(rid.size);
|
||||
Tread(xid, rid, dat);
|
||||
pagedListEntry * entry = malloc(it->entryRid.size);
|
||||
|
||||
// populate / alloc pointers passed in by caller.
|
||||
Tread(xid, it->entryRid, entry);
|
||||
|
||||
*keySize = *(short*)dat;
|
||||
*valueSize = rid.size - *keySize - sizeof(short);
|
||||
*keySize = entry->keySize;
|
||||
*valueSize = it->entryRid.size - *keySize - sizeof(pagedListEntry);
|
||||
|
||||
*key = malloc(*keySize);
|
||||
*value = malloc(*valueSize);
|
||||
*key = malloc(*keySize);
|
||||
*value = malloc(*valueSize);
|
||||
|
||||
memcpy(*key, ((short*)dat)+1, *keySize);
|
||||
memcpy(*value, ((byte*)(((short*)dat)+1)) + *keySize, *valueSize);
|
||||
memcpy(*key, entry+1, *keySize);
|
||||
memcpy(*value, ((byte*)(entry+1))+*keySize, *valueSize);
|
||||
|
||||
free(dat);
|
||||
it->slot++;
|
||||
return 1;
|
||||
}
|
||||
it->slot++;
|
||||
it->entryRid.slot = entry->nextEntry;
|
||||
// printf("slotA <- %d\n", it->entryRid.slot);
|
||||
|
||||
free(entry);
|
||||
return 1;
|
||||
|
||||
} else { // move to next page.
|
||||
pagedListHeader header;
|
||||
Tread(xid, it->headerRid, &header);
|
||||
it->entryRid.page = it->headerRid.page;
|
||||
it->headerRid = header.nextPage;
|
||||
it->entryRid.slot = header.thisPage;
|
||||
// printf("slotB <- %d\n", it->entryRid.slot);
|
||||
}
|
||||
rid.page = it->page;
|
||||
rid.slot = 0;
|
||||
rid.size = sizeof(long);
|
||||
Tread(xid, rid, &(it->page));
|
||||
it->slot = 1;
|
||||
|
||||
}
|
||||
free(it);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -18,7 +18,8 @@ increase the available free space.
|
|||
|
||||
The caller of this function must have a writelock on the page.
|
||||
*/
|
||||
static void slottedCompact(Page * page) {
|
||||
|
||||
void slottedCompact(Page * page) {
|
||||
|
||||
int i;
|
||||
Page bufPage;
|
||||
|
|
@ -192,7 +193,16 @@ recordid slottedPreRallocFromPage(int xid, long page, long size, Page **pp) {
|
|||
|
||||
*pp = loadPage(page);
|
||||
|
||||
assert(slottedFreespace(*pp) >= size);
|
||||
if(slottedFreespace(*pp) < size) {
|
||||
releasePage(*pp);
|
||||
*pp = NULL;
|
||||
recordid rid;
|
||||
rid.page = 0;
|
||||
rid.slot = 0;
|
||||
rid.size = -1;
|
||||
return rid;
|
||||
}
|
||||
|
||||
if(*page_type_ptr(*pp) == UNINITIALIZED_PAGE) {
|
||||
slottedPageInitialize(*pp);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -206,3 +206,5 @@ int slottedGetType(Page * p, int slot);
|
|||
*
|
||||
*/
|
||||
void slottedSetType(Page * p, int slot, int type);
|
||||
/** The caller of this function must have a write lock on the page. */
|
||||
void slottedCompact(Page * page);
|
||||
|
|
|
|||
|
|
@ -6,6 +6,6 @@ else
|
|||
TESTS =
|
||||
endif
|
||||
noinst_PROGRAMS = $(TESTS)
|
||||
LDADD = @CHECK_LIBS@ $(top_builddir)/src/lladd/liblladd.a $(top_builddir)/src/pbl/libpbl.a $(top_builddir)/src/libdfa/librw.a # -lefence
|
||||
LDADD = @CHECK_LIBS@ $(top_builddir)/src/lladd/liblladd.a $(top_builddir)/src/pbl/libpbl.a $(top_builddir)/src/libdfa/librw.a #-lefence
|
||||
CLEANFILES = check_lht.log check_logEntry.log storefile.txt logfile.txt blob0_file.txt blob1_file.txt check_blobRecovery.log check_logWriter.log check_operations.log check_recovery.log check_transactional2.log check_page.log check_bufferManager.log check_indirect.log check_bufferMananger.log check_lladdhash.log check_pageOperations.log check_linearhash.log check_linkedListNTA.log check_linearHashNTA.log check_pageOrientedListNTA.log
|
||||
AM_CFLAGS= -g -Wall -pedantic -std=gnu99
|
||||
|
|
|
|||
|
|
@ -130,9 +130,12 @@ START_TEST(linearHashNTAVariableSizetest)
|
|||
val.page = i * NUM_ENTRIES;
|
||||
val.slot = val.page * NUM_ENTRIES;
|
||||
val.size = val.slot * NUM_ENTRIES;
|
||||
val2 = 0;
|
||||
assert(-1 == ThashLookup(xid, hashHeader, (byte*)&i, sizeof(int), (byte**)&val2));
|
||||
ThashInsert(xid, hashHeader, (byte*)&i, sizeof(int), (byte*)&val, sizeof(recordid));
|
||||
assert(sizeof(recordid) == ThashLookup(xid, hashHeader, (byte*)&i, sizeof(int), (byte**)&val2));
|
||||
val2 =0;
|
||||
int ret = ThashLookup(xid, hashHeader, (byte*)&i, sizeof(int), (byte**)&val2);
|
||||
assert(sizeof(recordid) == ret);
|
||||
assert(val2->page == i * NUM_ENTRIES);
|
||||
assert(val2->slot == val2->page * NUM_ENTRIES);
|
||||
assert(val2->size == val2->slot * NUM_ENTRIES);
|
||||
|
|
|
|||
|
|
@ -116,7 +116,7 @@ START_TEST(pagedListCheck) {
|
|||
|
||||
ret = TpagedListFind(xid, list, (byte*)&a, sizeof(int), (byte**)&bb);
|
||||
|
||||
assert(!ret);
|
||||
assert(-1==ret);
|
||||
assert(!bb);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue