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Misc cleanup on performance branch

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Summary:

Did some trivial stuffs:

* Add more comments;
* fix compiler's warning messages (uninitialized variables).
* etc

Test Plan:

make check
This commit is contained in:
Kai Liu
2014-01-17 12:22:39 -08:00
parent 8079dd5d24
commit ef602f6275
5 changed files with 19 additions and 19 deletions
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8
db/memtable.cc
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@@ -232,7 +232,7 @@ bool MemTable::Get(const LookupKey& key, std::string* value, Status* s,
// sequence number since the Seek() call above should have skipped
// all entries with overly large sequence numbers.
const char* entry = iter->key();
uint32_t key_length;
uint32_t key_length = 0;
const char* key_ptr = GetVarint32Ptr(entry, entry + 5, &key_length);
if (comparator_.comparator.user_comparator()->Compare(
Slice(key_ptr, key_length - 8), key.user_key()) == 0) {
@@ -337,7 +337,7 @@ void MemTable::Update(SequenceNumber seq,
// sequence number since the Seek() call above should have skipped
// all entries with overly large sequence numbers.
const char* entry = iter->key();
uint32_t key_length;
uint32_t key_length = 0;
const char* key_ptr = GetVarint32Ptr(entry, entry + 5, &key_length);
if (comparator_.comparator.user_comparator()->Compare(
Slice(key_ptr, key_length - 8), lkey.user_key()) == 0) {
@@ -401,7 +401,7 @@ bool MemTable::UpdateCallback(SequenceNumber seq,
// sequence number since the Seek() call above should have skipped
// all entries with overly large sequence numbers.
const char* entry = iter->key();
uint32_t key_length;
uint32_t key_length = 0;
const char* key_ptr = GetVarint32Ptr(entry, entry + 5, &key_length);
if (comparator_.comparator.user_comparator()->Compare(
Slice(key_ptr, key_length - 8), lkey.user_key()) == 0) {
@@ -466,7 +466,7 @@ size_t MemTable::CountSuccessiveMergeEntries(const LookupKey& key) {
for (; iter->Valid(); iter->Next()) {
const char* entry = iter->key();
uint32_t key_length;
uint32_t key_length = 0;
const char* iter_key_ptr = GetVarint32Ptr(entry, entry + 5, &key_length);
if (!comparator_.comparator.user_comparator()->Compare(
Slice(iter_key_ptr, key_length - 8), key.user_key()) == 0) {