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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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10
table/plain_table_reader.cc
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@@ -405,7 +405,7 @@ Status PlainTableReader::GetOffset(const Slice& target, const Slice& prefix,
uint64_t prefix_index_offset = bucket_value ^ kSubIndexMask;
const char* index_ptr = sub_index_ + prefix_index_offset;
uint32_t upper_bound;
uint32_t upper_bound = 0;
const uint32_t* base_ptr = (const uint32_t*) GetVarint32Ptr(index_ptr,
index_ptr + 4,
&upper_bound);
@@ -464,17 +464,17 @@ bool PlainTableReader::MayHavePrefix(uint32_t hash) {
Status PlainTableReader::ReadKey(const char* row_ptr, Slice* key,
size_t& bytes_read) {
const char* key_ptr;
const char* key_ptr = nullptr;
bytes_read = 0;
size_t internal_key_size;
size_t internal_key_size = 0;
if (IsFixedLength()) {
internal_key_size = GetFixedInternalKeyLength();
key_ptr = row_ptr;
} else {
uint32_t key_size;
uint32_t key_size = 0;
key_ptr = GetVarint32Ptr(row_ptr, file_data_.data() + data_end_offset_,
&key_size);
internal_key_size = (size_t) key_size;
internal_key_size = (size_t)key_size;
bytes_read = key_ptr - row_ptr;
}
if (row_ptr + internal_key_size >= file_data_.data() + data_end_offset_) {