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VersionSet cleanup

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Summary:
Removed icmp_ from VersionSet (since it's per-column-family, not per-DB-instance)
Unfriended VersionSet and ColumnFamilyData (yay!)
Removed VersionSet::NumberLevels()
Cleaned up DBImpl

Test Plan: make check

Reviewers: dhruba, haobo, kailiu

CC: leveldb

Differential Revision: https://reviews.facebook.net/D15819
This commit is contained in:
Igor Canadi
2014-02-03 12:08:33 -08:00
parent 27a8856c23
commit 29bacb2eb6
8 changed files with 104 additions and 90 deletions
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13
db/compaction.cc
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@@ -79,12 +79,11 @@ void Compaction::AddInputDeletions(VersionEdit* edit) {
}
bool Compaction::IsBaseLevelForKey(const Slice& user_key) {
if (input_version_->vset_->options_->compaction_style ==
kCompactionStyleUniversal) {
if (cfd_->options()->compaction_style == kCompactionStyleUniversal) {
return bottommost_level_;
}
// Maybe use binary search to find right entry instead of linear search?
const Comparator* user_cmp = input_version_->vset_->icmp_.user_comparator();
const Comparator* user_cmp = cfd_->user_comparator();
for (int lvl = level_ + 2; lvl < number_levels_; lvl++) {
const std::vector<FileMetaData*>& files = input_version_->files_[lvl];
for (; level_ptrs_[lvl] < files.size(); ) {
@@ -105,7 +104,7 @@ bool Compaction::IsBaseLevelForKey(const Slice& user_key) {
bool Compaction::ShouldStopBefore(const Slice& internal_key) {
// Scan to find earliest grandparent file that contains key.
const InternalKeyComparator* icmp = &input_version_->vset_->icmp_;
const InternalKeyComparator* icmp = &cfd_->internal_comparator();
while (grandparent_index_ < grandparents_.size() &&
icmp->Compare(internal_key,
grandparents_[grandparent_index_]->largest.Encode()) > 0) {
@@ -143,8 +142,7 @@ void Compaction::MarkFilesBeingCompacted(bool value) {
// Is this compaction producing files at the bottommost level?
void Compaction::SetupBottomMostLevel(bool isManual) {
if (input_version_->vset_->options_->compaction_style ==
kCompactionStyleUniversal) {
if (cfd_->options()->compaction_style == kCompactionStyleUniversal) {
// If universal compaction style is used and manual
// compaction is occuring, then we are guaranteed that
// all files will be picked in a single compaction
@@ -157,8 +155,7 @@ void Compaction::SetupBottomMostLevel(bool isManual) {
return;
}
bottommost_level_ = true;
int num_levels = input_version_->vset_->NumberLevels();
for (int i = output_level() + 1; i < num_levels; i++) {
for (int i = output_level() + 1; i < number_levels_; i++) {
if (input_version_->NumLevelFiles(i) > 0) {
bottommost_level_ = false;
break;