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changingMemTreeIterator -> memTreeComponent::changingMemTreeIterator

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git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@676 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
This commit is contained in:
sears 2010-03-09 17:47:47 +00:00
parent 104f38f517
commit 76cd6a26c7
5 changed files with 69 additions and 78 deletions
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2
logiterators.cpp
View file

@ -139,9 +139,7 @@ TUPLE * diskTreeIterator<TUPLE>::getnext()
}
// else readTuple is null. We're done.
}
return readTuple;
}
template class diskTreeIterator<datatuple>;
template class changingMemTreeIterator<memTreeComponent<datatuple>::rbtree_t, datatuple>;

68
logiterators.h
View file

@ -4,74 +4,6 @@
template <class TUPLE>
class DataPage;
template <class MEMTREE, class TUPLE>
class changingMemTreeIterator
{
private:
typedef typename MEMTREE::const_iterator MTITER;
public:
changingMemTreeIterator( MEMTREE *s, pthread_mutex_t * rb_mut ) : s_(s), mut_(rb_mut) {
pthread_mutex_lock(mut_);
if(s_->begin() == s_->end()) {
next_ret_ = NULL;
} else {
next_ret_ = (*s_->begin())->create_copy(); // the create_copy() calls have to happen before we release mut_...
}
pthread_mutex_unlock(mut_);
}
changingMemTreeIterator( MEMTREE *s, pthread_mutex_t * rb_mut, TUPLE *&key ) : s_(s), mut_(rb_mut) {
pthread_mutex_lock(mut_);
if(key) {
if(s_->find(key) != s_->end()) {
next_ret_ = (*(s_->find(key)))->create_copy();
} else if(s_->upper_bound(key) != s_->end()) {
next_ret_ = (*(s_->upper_bound(key)))->create_copy();
} else {
next_ret_ = NULL;
}
} else {
if(s_->begin() == s_->end()) {
next_ret_ = NULL;
} else {
next_ret_ = (*s_->begin())->create_copy(); // the create_copy() calls have to happen before we release mut_...
}
}
DEBUG("changing mem next ret = %s key = %s\n", next_ret_ ? (const char*)next_ret_->key() : "NONE", key ? (const char*)key->key() : "NULL");
pthread_mutex_unlock(mut_);
}
~changingMemTreeIterator() {
if(next_ret_) datatuple::freetuple(next_ret_);
}
TUPLE* getnext() {
pthread_mutex_lock(mut_);
TUPLE * ret = next_ret_;
if(next_ret_) {
if(s_->upper_bound(next_ret_) == s_->end()) {
next_ret_ = 0;
} else {
next_ret_ = (*s_->upper_bound(next_ret_))->create_copy();
}
}
pthread_mutex_unlock(mut_);
return ret;
}
private:
explicit changingMemTreeIterator() { abort(); }
void operator=(changingMemTreeIterator & t) { abort(); }
int operator-(changingMemTreeIterator & t) { abort(); }
private:
MEMTREE *s_;
TUPLE * next_ret_;
pthread_mutex_t * mut_;
};
/////////////////////////////////////////////////////////////////
template <class TUPLE>

10
logstore.h
View file

@ -330,7 +330,7 @@ private:
logtable * ltable;
uint64_t epoch;
typedef mergeManyIterator<
changingMemTreeIterator<typename memTreeComponent<TUPLE>::rbtree_t, TUPLE>,
typename memTreeComponent<TUPLE>::changingMemTreeIterator,
typename memTreeComponent<TUPLE>::memTreeIterator, TUPLE> inner_merge_it_t;
// typedef mergeManyIterator<memTreeIterator<memTreeComponent::rbtree_t, TUPLE>, diskTreeIterator<TUPLE>, TUPLE> merge_it_t;
typedef mergeManyIterator<inner_merge_it_t, diskTreeIterator<TUPLE>, TUPLE> merge_it_t;
@ -350,24 +350,24 @@ private:
void validate() {
changingMemTreeIterator<typename memTreeComponent<TUPLE>::rbtree_t, TUPLE> * c0_it;
typename memTreeComponent<TUPLE>::changingMemTreeIterator * c0_it;
typename memTreeComponent<TUPLE>::memTreeIterator *c0_mergeable_it[1];
diskTreeIterator<TUPLE> * disk_it[3];
epoch = ltable->get_epoch();
if(last_returned) {
c0_it = new changingMemTreeIterator<typename memTreeComponent<TUPLE>::rbtree_t, TUPLE>(ltable->get_tree_c0(), ltable->getMergeData()->rbtree_mut, last_returned);
c0_it = new typename memTreeComponent<TUPLE>::changingMemTreeIterator(ltable->get_tree_c0(), ltable->getMergeData()->rbtree_mut, last_returned);
c0_mergeable_it[0] = new typename memTreeComponent<TUPLE>::memTreeIterator (ltable->get_tree_c0_mergeable(), last_returned);
disk_it[0] = new diskTreeIterator<TUPLE> (ltable->get_tree_c1(), *last_returned);
disk_it[1] = new diskTreeIterator<TUPLE> (ltable->get_tree_c1_mergeable(), *last_returned);
disk_it[2] = new diskTreeIterator<TUPLE> (ltable->get_tree_c2(), *last_returned);
} else if(key) {
c0_it = new changingMemTreeIterator<typename memTreeComponent<TUPLE>::rbtree_t, TUPLE>(ltable->get_tree_c0(), ltable->getMergeData()->rbtree_mut, key);
c0_it = new typename memTreeComponent<TUPLE>::changingMemTreeIterator(ltable->get_tree_c0(), ltable->getMergeData()->rbtree_mut, key);
c0_mergeable_it[0] = new typename memTreeComponent<TUPLE>::memTreeIterator (ltable->get_tree_c0_mergeable(), key);
disk_it[0] = new diskTreeIterator<TUPLE> (ltable->get_tree_c1(), *key);
disk_it[1] = new diskTreeIterator<TUPLE> (ltable->get_tree_c1_mergeable(), *key);
disk_it[2] = new diskTreeIterator<TUPLE> (ltable->get_tree_c2(), *key);
} else {
c0_it = new changingMemTreeIterator<typename memTreeComponent<TUPLE>::rbtree_t, TUPLE>(ltable->get_tree_c0(), ltable->getMergeData()->rbtree_mut );
c0_it = new typename memTreeComponent<TUPLE>::changingMemTreeIterator(ltable->get_tree_c0(), ltable->getMergeData()->rbtree_mut );
c0_mergeable_it[0] = new typename memTreeComponent<TUPLE>::memTreeIterator (ltable->get_tree_c0_mergeable() );
disk_it[0] = new diskTreeIterator<TUPLE> (ltable->get_tree_c1() );
disk_it[1] = new diskTreeIterator<TUPLE> (ltable->get_tree_c1_mergeable() );

1
memTreeComponent.cpp
View file

@ -20,5 +20,4 @@ void memTreeComponent<TUPLE>::tearDownTree(rbtree_ptr_t tree) {
}
delete tree;
}
template class memTreeComponent<datatuple>;

64
memTreeComponent.h
View file

@ -73,7 +73,69 @@ public:
MTITER *itend_;
};
/////////////////////////////////////////////////////////////////
class changingMemTreeIterator
{
private:
typedef typename rbtree_t::const_iterator MTITER;
public:
changingMemTreeIterator( rbtree_t *s, pthread_mutex_t * rb_mut ) : s_(s), mut_(rb_mut) {
pthread_mutex_lock(mut_);
if(s_->begin() == s_->end()) {
next_ret_ = NULL;
} else {
next_ret_ = (*s_->begin())->create_copy(); // the create_copy() calls have to happen before we release mut_...
}
pthread_mutex_unlock(mut_);
}
changingMemTreeIterator( rbtree_t *s, pthread_mutex_t * rb_mut, TUPLE *&key ) : s_(s), mut_(rb_mut) {
pthread_mutex_lock(mut_);
if(key) {
if(s_->find(key) != s_->end()) {
next_ret_ = (*(s_->find(key)))->create_copy();
} else if(s_->upper_bound(key) != s_->end()) {
next_ret_ = (*(s_->upper_bound(key)))->create_copy();
} else {
next_ret_ = NULL;
}
} else {
if(s_->begin() == s_->end()) {
next_ret_ = NULL;
} else {
next_ret_ = (*s_->begin())->create_copy(); // the create_copy() calls have to happen before we release mut_...
}
}
// DEBUG("changing mem next ret = %s key = %s\n", next_ret_ ? (const char*)next_ret_->key() : "NONE", key ? (const char*)key->key() : "NULL");
pthread_mutex_unlock(mut_);
}
~changingMemTreeIterator() {
if(next_ret_) datatuple::freetuple(next_ret_);
}
TUPLE* getnext() {
pthread_mutex_lock(mut_);
TUPLE * ret = next_ret_;
if(next_ret_) {
if(s_->upper_bound(next_ret_) == s_->end()) {
next_ret_ = 0;
} else {
next_ret_ = (*s_->upper_bound(next_ret_))->create_copy();
}
}
pthread_mutex_unlock(mut_);
return ret;
}
private:
explicit changingMemTreeIterator() { abort(); }
void operator=(changingMemTreeIterator & t) { abort(); }
int operator-(changingMemTreeIterator & t) { abort(); }
rbtree_t *s_;
TUPLE * next_ret_;
pthread_mutex_t * mut_;
};
};
#endif //_MEMTREECOMPONENT_H_