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Revert "PinnableSlice"

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Summary:
This reverts commit 54d94e9c2c.

The pull request was landed by mistake.
Closes https://github.com/facebook/rocksdb/pull/1755

Differential Revision: D4391678

Pulled By: maysamyabandeh

fbshipit-source-id: 36d5149
This commit is contained in:
Maysam Yabandeh 2017-01-08 14:08:51 -08:00 committed by Facebook Github Bot
parent 54d94e9c2c
commit d0ba8ec8f9
31 changed files with 176 additions and 528 deletions
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13
db/compacted_db_impl.cc
View File

@ -42,10 +42,10 @@ size_t CompactedDBImpl::FindFile(const Slice& key) {
return right;
}
Status CompactedDBImpl::Get(const ReadOptions& options, ColumnFamilyHandle*,
const Slice& key, PinnableSlice* pSlice) {
Status CompactedDBImpl::Get(const ReadOptions& options,
ColumnFamilyHandle*, const Slice& key, std::string* value) {
GetContext get_context(user_comparator_, nullptr, nullptr, nullptr,
GetContext::kNotFound, key, pSlice, nullptr, nullptr,
GetContext::kNotFound, key, value, nullptr, nullptr,
nullptr, nullptr);
LookupKey lkey(key, kMaxSequenceNumber);
files_.files[FindFile(key)].fd.table_reader->Get(
@ -75,14 +75,11 @@ std::vector<Status> CompactedDBImpl::MultiGet(const ReadOptions& options,
int idx = 0;
for (auto* r : reader_list) {
if (r != nullptr) {
PinnableSlice pSlice;
std::string& value = (*values)[idx];
GetContext get_context(user_comparator_, nullptr, nullptr, nullptr,
GetContext::kNotFound, keys[idx], &pSlice, nullptr,
nullptr, nullptr, nullptr);
GetContext::kNotFound, keys[idx], &(*values)[idx],
nullptr, nullptr, nullptr, nullptr);
LookupKey lkey(keys[idx], kMaxSequenceNumber);
r->Get(options, lkey.internal_key(), &get_context);
value.assign(pSlice.data(), pSlice.size());
if (get_context.State() == GetContext::kFound) {
statuses[idx] = Status::OK();
}

2
db/compacted_db_impl.h
View File

@ -23,7 +23,7 @@ class CompactedDBImpl : public DBImpl {
using DB::Get;
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* value) override;
std::string* value) override;
using DB::MultiGet;
virtual std::vector<Status> MultiGet(
const ReadOptions& options,

43
db/db_impl.cc
View File

@ -3907,8 +3907,8 @@ ColumnFamilyHandle* DBImpl::DefaultColumnFamily() const {
Status DBImpl::Get(const ReadOptions& read_options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice) {
return GetImpl(read_options, column_family, key, pSlice);
std::string* value) {
return GetImpl(read_options, column_family, key, value);
}
// JobContext gets created and destructed outside of the lock --
@ -3965,7 +3965,7 @@ SuperVersion* DBImpl::InstallSuperVersionAndScheduleWork(
Status DBImpl::GetImpl(const ReadOptions& read_options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice, bool* value_found) {
std::string* value, bool* value_found) {
StopWatch sw(env_, stats_, DB_GET);
PERF_TIMER_GUARD(get_snapshot_time);
@ -3996,12 +3996,12 @@ Status DBImpl::GetImpl(const ReadOptions& read_options,
(read_options.read_tier == kPersistedTier && has_unpersisted_data_);
bool done = false;
if (!skip_memtable) {
if (sv->mem->Get(lkey, pSlice, &s, &merge_context, &range_del_agg,
if (sv->mem->Get(lkey, value, &s, &merge_context, &range_del_agg,
read_options)) {
done = true;
RecordTick(stats_, MEMTABLE_HIT);
} else if ((s.ok() || s.IsMergeInProgress()) &&
sv->imm->Get(lkey, pSlice, &s, &merge_context, &range_del_agg,
sv->imm->Get(lkey, value, &s, &merge_context, &range_del_agg,
read_options)) {
done = true;
RecordTick(stats_, MEMTABLE_HIT);
@ -4012,7 +4012,7 @@ Status DBImpl::GetImpl(const ReadOptions& read_options,
}
if (!done) {
PERF_TIMER_GUARD(get_from_output_files_time);
sv->current->Get(read_options, lkey, pSlice, &s, &merge_context,
sv->current->Get(read_options, lkey, value, &s, &merge_context,
&range_del_agg, value_found);
RecordTick(stats_, MEMTABLE_MISS);
}
@ -4023,9 +4023,8 @@ Status DBImpl::GetImpl(const ReadOptions& read_options,
ReturnAndCleanupSuperVersion(cfd, sv);
RecordTick(stats_, NUMBER_KEYS_READ);
size_t size = pSlice->size();
RecordTick(stats_, BYTES_READ, size);
MeasureTime(stats_, BYTES_PER_READ, size);
RecordTick(stats_, BYTES_READ, value->size());
MeasureTime(stats_, BYTES_PER_READ, value->size());
}
return s;
}
@ -4101,30 +4100,26 @@ std::vector<Status> DBImpl::MultiGet(
bool skip_memtable =
(read_options.read_tier == kPersistedTier && has_unpersisted_data_);
bool done = false;
PinnableSlice pSlice;
if (!skip_memtable) {
if (super_version->mem->Get(lkey, &pSlice, &s, &merge_context,
if (super_version->mem->Get(lkey, value, &s, &merge_context,
&range_del_agg, read_options)) {
value->assign(pSlice.data(), pSlice.size());
done = true;
// TODO(?): RecordTick(stats_, MEMTABLE_HIT)?
} else if (super_version->imm->Get(lkey, &pSlice, &s, &merge_context,
} else if (super_version->imm->Get(lkey, value, &s, &merge_context,
&range_del_agg, read_options)) {
value->assign(pSlice.data(), pSlice.size());
done = true;
// TODO(?): RecordTick(stats_, MEMTABLE_HIT)?
}
}
if (!done) {
PERF_TIMER_GUARD(get_from_output_files_time);
super_version->current->Get(read_options, lkey, &pSlice, &s,
&merge_context, &range_del_agg);
value->assign(pSlice.data(), pSlice.size());
super_version->current->Get(read_options, lkey, value, &s, &merge_context,
&range_del_agg);
// TODO(?): RecordTick(stats_, MEMTABLE_MISS)?
}
if (s.ok()) {
bytes_read += pSlice.size();
bytes_read += value->size();
}
}
@ -4337,12 +4332,7 @@ bool DBImpl::KeyMayExist(const ReadOptions& read_options,
}
ReadOptions roptions = read_options;
roptions.read_tier = kBlockCacheTier; // read from block cache only
PinnableSlice pSlice;
PinnableSlice* pSlicePtr = value != nullptr ? &pSlice : nullptr;
auto s = GetImpl(roptions, column_family, key, pSlicePtr, value_found);
if (value != nullptr) {
value->assign(pSlice.data(), pSlice.size());
}
auto s = GetImpl(roptions, column_family, key, value, value_found);
// If block_cache is enabled and the index block of the table didn't
// not present in block_cache, the return value will be Status::Incomplete.
@ -6405,8 +6395,7 @@ Status DBImpl::GetLatestSequenceForKey(SuperVersion* sv, const Slice& key,
*found_record_for_key = false;
// Check if there is a record for this key in the latest memtable
PinnableSlice* pSliceNullPtr = nullptr;
sv->mem->Get(lkey, pSliceNullPtr, &s, &merge_context, &range_del_agg, seq,
sv->mem->Get(lkey, nullptr, &s, &merge_context, &range_del_agg, seq,
read_options);
if (!(s.ok() || s.IsNotFound() || s.IsMergeInProgress())) {
@ -6425,7 +6414,7 @@ Status DBImpl::GetLatestSequenceForKey(SuperVersion* sv, const Slice& key,
}
// Check if there is a record for this key in the immutable memtables
sv->imm->Get(lkey, pSliceNullPtr, &s, &merge_context, &range_del_agg, seq,
sv->imm->Get(lkey, nullptr, &s, &merge_context, &range_del_agg, seq,
read_options);
if (!(s.ok() || s.IsNotFound() || s.IsMergeInProgress())) {

4
db/db_impl.h
View File

@ -91,7 +91,7 @@ class DBImpl : public DB {
using DB::Get;
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* value) override;
std::string* value) override;
using DB::MultiGet;
virtual std::vector<Status> MultiGet(
const ReadOptions& options,
@ -1088,7 +1088,7 @@ class DBImpl : public DB {
// Function that Get and KeyMayExist call with no_io true or false
// Note: 'value_found' from KeyMayExist propagates here
Status GetImpl(const ReadOptions& options, ColumnFamilyHandle* column_family,
const Slice& key, PinnableSlice* pSlice,
const Slice& key, std::string* value,
bool* value_found = nullptr);
bool GetIntPropertyInternal(ColumnFamilyData* cfd,

6
db/db_impl_readonly.cc
View File

@ -31,7 +31,7 @@ DBImplReadOnly::~DBImplReadOnly() {
// Implementations of the DB interface
Status DBImplReadOnly::Get(const ReadOptions& read_options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice) {
std::string* value) {
Status s;
SequenceNumber snapshot = versions_->LastSequence();
auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(column_family);
@ -40,11 +40,11 @@ Status DBImplReadOnly::Get(const ReadOptions& read_options,
MergeContext merge_context;
RangeDelAggregator range_del_agg(cfd->internal_comparator(), snapshot);
LookupKey lkey(key, snapshot);
if (super_version->mem->Get(lkey, pSlice, &s, &merge_context, &range_del_agg,
if (super_version->mem->Get(lkey, value, &s, &merge_context, &range_del_agg,
read_options)) {
} else {
PERF_TIMER_GUARD(get_from_output_files_time);
super_version->current->Get(read_options, lkey, pSlice, &s, &merge_context,
super_version->current->Get(read_options, lkey, value, &s, &merge_context,
&range_del_agg);
}
return s;

2
db/db_impl_readonly.h
View File

@ -22,7 +22,7 @@ class DBImplReadOnly : public DBImpl {
using DB::Get;
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* value) override;
std::string* value) override;
// TODO: Implement ReadOnly MultiGet?

2
db/db_test.cc
View File

@ -2691,7 +2691,7 @@ class ModelDB : public DB {
}
using DB::Get;
virtual Status Get(const ReadOptions& options, ColumnFamilyHandle* cf,
const Slice& key, PinnableSlice* pSlice) override {
const Slice& key, std::string* value) override {
return Status::NotSupported(key);
}

41
db/memtable.cc
View File

@ -520,7 +520,7 @@ struct Saver {
const LookupKey* key;
bool* found_final_value; // Is value set correctly? Used by KeyMayExist
bool* merge_in_progress;
PinnableSlice* pSlice;
std::string* value;
SequenceNumber seq;
const MergeOperator* merge_operator;
// the merge operations encountered;
@ -534,10 +534,6 @@ struct Saver {
};
} // namespace
//static void UnrefMemTable(void* s, void*) {
// reinterpret_cast<MemTable*>(s)->Unref();
//}
static bool SaveValue(void* arg, const char* entry) {
Saver* s = reinterpret_cast<Saver*>(arg);
MergeContext* merge_context = s->merge_context;
@ -575,18 +571,13 @@ static bool SaveValue(void* arg, const char* entry) {
}
Slice v = GetLengthPrefixedSlice(key_ptr + key_length);
*(s->status) = Status::OK();
if (LIKELY(s->pSlice != nullptr)) {
if (*(s->merge_in_progress)) {
*(s->status) = MergeHelper::TimedFullMerge(
merge_operator, s->key->user_key(), &v,
merge_context->GetOperands(), s->pSlice->GetSelf(), s->logger,
s->statistics, s->env_);
s->pSlice->PinSelf();
} else {
//s->mem->Ref();
//s->pSlice->PinSlice(v, UnrefMemTable, s->mem, nullptr);
s->pSlice->PinSelf(v);
}
if (*(s->merge_in_progress)) {
*(s->status) = MergeHelper::TimedFullMerge(
merge_operator, s->key->user_key(), &v,
merge_context->GetOperands(), s->value, s->logger, s->statistics,
s->env_);
} else if (s->value != nullptr) {
s->value->assign(v.data(), v.size());
}
if (s->inplace_update_support) {
s->mem->GetLock(s->key->user_key())->ReadUnlock();
@ -598,14 +589,10 @@ static bool SaveValue(void* arg, const char* entry) {
case kTypeSingleDeletion:
case kTypeRangeDeletion: {
if (*(s->merge_in_progress)) {
*(s->status) = Status::OK();
if (s->pSlice != nullptr) {
*(s->status) = MergeHelper::TimedFullMerge(
merge_operator, s->key->user_key(), nullptr,
merge_context->GetOperands(), s->pSlice->GetSelf(), s->logger,
s->statistics, s->env_);
s->pSlice->PinSelf();
}
*(s->status) = MergeHelper::TimedFullMerge(
merge_operator, s->key->user_key(), nullptr,
merge_context->GetOperands(), s->value, s->logger, s->statistics,
s->env_);
} else {
*(s->status) = Status::NotFound();
}
@ -639,7 +626,7 @@ static bool SaveValue(void* arg, const char* entry) {
return false;
}
bool MemTable::Get(const LookupKey& key, PinnableSlice* pSlice, Status* s,
bool MemTable::Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg, SequenceNumber* seq,
const ReadOptions& read_opts) {
@ -677,7 +664,7 @@ bool MemTable::Get(const LookupKey& key, PinnableSlice* pSlice, Status* s,
saver.found_final_value = &found_final_value;
saver.merge_in_progress = &merge_in_progress;
saver.key = &key;
saver.pSlice = pSlice;
saver.value = value;
saver.seq = kMaxSequenceNumber;
saver.mem = this;
saver.merge_context = merge_context;

20
db/memtable.h
View File

@ -186,27 +186,17 @@ class MemTable {
// returned). Otherwise, *seq will be set to kMaxSequenceNumber.
// On success, *s may be set to OK, NotFound, or MergeInProgress. Any other
// status returned indicates a corruption or other unexpected error.
bool Get(const LookupKey& key, PinnableSlice* pSlice, Status* s,
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
SequenceNumber* seq, const ReadOptions& read_opts);
inline bool Get(const LookupKey& key, PinnableSlice* pSlice, Status* s,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
SequenceNumber seq;
return Get(key, pSlice, s, merge_context, range_del_agg, &seq, read_opts);
return Get(key, value, s, merge_context, range_del_agg, &seq, read_opts);
}
// deprecated. Use Get with PinnableSlice
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
SequenceNumber* seq, const ReadOptions& read_opts);
// deprecated. Use Get with PinnableSlice
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts);
// Attempts to update the new_value inplace, else does normal Add
// Pseudocode
// if key exists in current memtable && prev_value is of type kTypeValue

26
db/memtable_list.cc
View File

@ -100,12 +100,12 @@ int MemTableList::NumFlushed() const {
// Search all the memtables starting from the most recent one.
// Return the most recent value found, if any.
// Operands stores the list of merge operations to apply, so far.
bool MemTableListVersion::Get(const LookupKey& key, PinnableSlice* pSlice,
bool MemTableListVersion::Get(const LookupKey& key, std::string* value,
Status* s, MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
SequenceNumber* seq,
const ReadOptions& read_opts) {
return GetFromList(&memlist_, key, pSlice, s, merge_context, range_del_agg,
return GetFromList(&memlist_, key, value, s, merge_context, range_del_agg,
seq, read_opts);
}
@ -115,26 +115,22 @@ bool MemTableListVersion::GetFromHistory(const LookupKey& key,
RangeDelAggregator* range_del_agg,
SequenceNumber* seq,
const ReadOptions& read_opts) {
PinnableSlice pSlice;
PinnableSlice* pSlicePtr = value != nullptr ? &pSlice : nullptr;
auto res = GetFromList(&memlist_history_, key, pSlicePtr, s, merge_context,
range_del_agg, seq, read_opts);
if (value != nullptr) {
value->assign(pSlice.data(), pSlice.size());
}
return res;
return GetFromList(&memlist_history_, key, value, s, merge_context,
range_del_agg, seq, read_opts);
}
bool MemTableListVersion::GetFromList(
std::list<MemTable*>* list, const LookupKey& key, PinnableSlice* pSlice,
Status* s, MergeContext* merge_context, RangeDelAggregator* range_del_agg,
SequenceNumber* seq, const ReadOptions& read_opts) {
bool MemTableListVersion::GetFromList(std::list<MemTable*>* list,
const LookupKey& key, std::string* value,
Status* s, MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
SequenceNumber* seq,
const ReadOptions& read_opts) {
*seq = kMaxSequenceNumber;
for (auto& memtable : *list) {
SequenceNumber current_seq = kMaxSequenceNumber;
bool done = memtable->Get(key, pSlice, s, merge_context, range_del_agg,
bool done = memtable->Get(key, value, s, merge_context, range_del_agg,
&current_seq, read_opts);
if (*seq == kMaxSequenceNumber) {
// Store the most recent sequence number of any operation on this key.

31
db/memtable_list.h
View File

@ -53,27 +53,17 @@ class MemTableListVersion {
// If any operation was found for this key, its most recent sequence number
// will be stored in *seq on success (regardless of whether true/false is
// returned). Otherwise, *seq will be set to kMaxSequenceNumber.
bool Get(const LookupKey& key, PinnableSlice* pSlice, Status* s,
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
SequenceNumber* seq, const ReadOptions& read_opts);
inline bool Get(const LookupKey& key, PinnableSlice* pSlice, Status* s,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
SequenceNumber seq;
return Get(key, pSlice, s, merge_context, range_del_agg, &seq, read_opts);
return Get(key, value, s, merge_context, range_del_agg, &seq, read_opts);
}
// deprecated. Use Get with PinnableSlice
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
SequenceNumber* seq, const ReadOptions& read_opts);
// deprecated. Use Get with PinnableSlice
bool Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts);
// Similar to Get(), but searches the Memtable history of memtables that
// have already been flushed. Should only be used from in-memory only
// queries (such as Transaction validation) as the history may contain
@ -82,10 +72,10 @@ class MemTableListVersion {
MergeContext* merge_context,
RangeDelAggregator* range_del_agg, SequenceNumber* seq,
const ReadOptions& read_opts);
inline bool GetFromHistory(const LookupKey& key, std::string* value,
Status* s, MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
bool GetFromHistory(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
SequenceNumber seq;
return GetFromHistory(key, value, s, merge_context, range_del_agg, &seq,
read_opts);
@ -122,8 +112,7 @@ class MemTableListVersion {
void TrimHistory(autovector<MemTable*>* to_delete);
bool GetFromList(std::list<MemTable*>* list, const LookupKey& key,
PinnableSlice* pSlice, Status* s,
MergeContext* merge_context,
std::string* value, Status* s, MergeContext* merge_context,
RangeDelAggregator* range_del_agg, SequenceNumber* seq,
const ReadOptions& read_opts);

14
db/version_set.cc
View File

@ -928,7 +928,7 @@ Version::Version(ColumnFamilyData* column_family_data, VersionSet* vset,
version_number_(version_number) {}
void Version::Get(const ReadOptions& read_options, const LookupKey& k,
PinnableSlice* pSlice, Status* status,
std::string* value, Status* status,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg, bool* value_found,
bool* key_exists, SequenceNumber* seq) {
@ -946,7 +946,7 @@ void Version::Get(const ReadOptions& read_options, const LookupKey& k,
GetContext get_context(
user_comparator(), merge_operator_, info_log_, db_statistics_,
status->ok() ? GetContext::kNotFound : GetContext::kMerge, user_key,
pSlice, value_found, merge_context, range_del_agg, this->env_, seq,
value, value_found, merge_context, range_del_agg, this->env_, seq,
merge_operator_ ? &pinned_iters_mgr : nullptr);
// Pin blocks that we read to hold merge operands
@ -1005,13 +1005,9 @@ void Version::Get(const ReadOptions& read_options, const LookupKey& k,
}
// merge_operands are in saver and we hit the beginning of the key history
// do a final merge of nullptr and operands;
std::string* str_value = pSlice != nullptr ? pSlice->GetSelf() : nullptr;
*status = MergeHelper::TimedFullMerge(
merge_operator_, user_key, nullptr, merge_context->GetOperands(),
str_value, info_log_, db_statistics_, env_);
if (LIKELY(pSlice != nullptr)) {
pSlice->PinSelf();
}
*status = MergeHelper::TimedFullMerge(merge_operator_, user_key, nullptr,
merge_context->GetOperands(), value,
info_log_, db_statistics_, env_);
} else {
if (key_exists != nullptr) {
*key_exists = false;

2
db/version_set.h
View File

@ -457,7 +457,7 @@ class Version {
// for the key if a key was found.
//
// REQUIRES: lock is not held
void Get(const ReadOptions&, const LookupKey& key, PinnableSlice* pSlice,
void Get(const ReadOptions&, const LookupKey& key, std::string* val,
Status* status, MergeContext* merge_context,
RangeDelAggregator* range_del_agg, bool* value_found = nullptr,
bool* key_exists = nullptr, SequenceNumber* seq = nullptr);

73
include/rocksdb/cleanable.h
View File

@ -1,73 +0,0 @@
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
//
// An iterator yields a sequence of key/value pairs from a source.
// The following class defines the interface. Multiple implementations
// are provided by this library. In particular, iterators are provided
// to access the contents of a Table or a DB.
//
// Multiple threads can invoke const methods on an Iterator without
// external synchronization, but if any of the threads may call a
// non-const method, all threads accessing the same Iterator must use
// external synchronization.
#ifndef INCLUDE_ROCKSDB_CLEANABLE_H_
#define INCLUDE_ROCKSDB_CLEANABLE_H_
namespace rocksdb {
class Cleanable {
public:
Cleanable();
~Cleanable();
// Clients are allowed to register function/arg1/arg2 triples that
// will be invoked when this iterator is destroyed.
//
// Note that unlike all of the preceding methods, this method is
// not abstract and therefore clients should not override it.
typedef void (*CleanupFunction)(void* arg1, void* arg2);
void RegisterCleanup(CleanupFunction function, void* arg1, void* arg2);
void DelegateCleanupsTo(Cleanable* other);
// DoCkeanup and also resets the pointers for reuse
inline void Reset() {
DoCleanup();
cleanup_.function = nullptr;
cleanup_.next = nullptr;
}
protected:
struct Cleanup {
CleanupFunction function;
void* arg1;
void* arg2;
Cleanup* next;
};
Cleanup cleanup_;
// It also becomes the owner of c
void RegisterCleanup(Cleanup* c);
private:
// Performs all the cleanups. It does not reset the pointers. Making it
// private
// to prevent misuse
inline void DoCleanup() {
if (cleanup_.function != nullptr) {
(*cleanup_.function)(cleanup_.arg1, cleanup_.arg2);
for (Cleanup* c = cleanup_.next; c != nullptr;) {
(*c->function)(c->arg1, c->arg2);
Cleanup* next = c->next;
delete c;
c = next;
}
}
}
};
} // namespace rocksdb
#endif // INCLUDE_ROCKSDB_CLEANABLE_H_

13
include/rocksdb/db.h
View File

@ -280,20 +280,9 @@ class DB {
// a status for which Status::IsNotFound() returns true.
//
// May return some other Status on an error.
inline Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
std::string* value) {
PinnableSlice pSlice;
PinnableSlice* pSlicePtr = value != nullptr ? &pSlice : nullptr;
auto s = Get(options, column_family, key, pSlicePtr);
if (value != nullptr && s.ok()) {
value->assign(pSlice.data(), pSlice.size());
}
return s;
}
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* value) = 0;
std::string* value) = 0;
virtual Status Get(const ReadOptions& options, const Slice& key, std::string* value) {
return Get(options, DefaultColumnFamily(), key, value);
}

33
include/rocksdb/iterator.h
View File

@ -20,12 +20,43 @@
#define STORAGE_ROCKSDB_INCLUDE_ITERATOR_H_
#include <string>
#include "rocksdb/cleanable.h"
#include "rocksdb/slice.h"
#include "rocksdb/status.h"
namespace rocksdb {
class Cleanable {
public:
Cleanable();
~Cleanable();
// Clients are allowed to register function/arg1/arg2 triples that
// will be invoked when this iterator is destroyed.
//
// Note that unlike all of the preceding methods, this method is
// not abstract and therefore clients should not override it.
typedef void (*CleanupFunction)(void* arg1, void* arg2);
void RegisterCleanup(CleanupFunction function, void* arg1, void* arg2);
void DelegateCleanupsTo(Cleanable* other);
// DoCleanup and also resets the pointers for reuse
void Reset();
protected:
struct Cleanup {
CleanupFunction function;
void* arg1;
void* arg2;
Cleanup* next;
};
Cleanup cleanup_;
// It also becomes the owner of c
void RegisterCleanup(Cleanup* c);
private:
// Performs all the cleanups. It does not reset the pointers. Making it
// private to prevent misuse
inline void DoCleanup();
};
class Iterator : public Cleanable {
public:
Iterator() {}

57
include/rocksdb/slice.h
View File

@ -25,8 +25,6 @@
#include <string.h>
#include <string>
#include "rocksdb/cleanable.h"
namespace rocksdb {
class Slice {
@ -118,61 +116,6 @@ class Slice {
// Intentionally copyable
};
class PinnableSlice : public Slice, public Cleanable {
public:
PinnableSlice() {}
inline void PinSlice(const Slice& s, CleanupFunction f, void* arg1,
void* arg2) {
data_ = s.data();
size_ = s.size();
RegisterCleanup(f, arg1, arg2);
}
inline void PinSlice(const Slice& s, Cleanable* cleanable) {
data_ = s.data();
size_ = s.size();
cleanable->DelegateCleanupsTo(this);
}
inline void PinHeap(const char* s, const size_t n) {
data_ = s;
size_ = n;
RegisterCleanup(ReleaseCharStrHeap, const_cast<char*>(data_), nullptr);
}
inline void PinHeap(std::string* s) {
data_ = s->data();
size_ = s->size();
RegisterCleanup(ReleaseStringHeap, s, nullptr);
}
inline void PinSelf(const Slice& slice) {
self_space.assign(slice.data(), slice.size());
data_ = self_space.data();
size_ = self_space.size();
}
inline void PinSelf() {
data_ = self_space.data();
size_ = self_space.size();
}
inline std::string* GetSelf() { return &self_space; }
inline bool IsPinned() { return cleanup_.function != nullptr; }
private:
friend class PinnableSlice4Test;
std::string self_space;
static void ReleaseCharStrHeap(void* s, void*) {
delete reinterpret_cast<const char*>(s);
}
static void ReleaseStringHeap(void* s, void*) {
delete reinterpret_cast<const std::string*>(s);
}
};
// A set of Slices that are virtually concatenated together. 'parts' points
// to an array of Slices. The number of elements in the array is 'num_parts'.
struct SliceParts {

4
include/rocksdb/utilities/stackable_db.h
View File

@ -56,8 +56,8 @@ class StackableDB : public DB {
using DB::Get;
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice) override {
return db_->Get(options, column_family, key, pSlice);
std::string* value) override {
return db_->Get(options, column_family, key, value);
}
using DB::MultiGet;

10
table/block_based_table_reader.cc
View File

@ -1537,6 +1537,9 @@ Status BlockBasedTable::Get(const ReadOptions& read_options, const Slice& key,
BlockIter iiter;
NewIndexIterator(read_options, &iiter);
PinnedIteratorsManager* pinned_iters_mgr = get_context->pinned_iters_mgr();
bool pin_blocks = pinned_iters_mgr && pinned_iters_mgr->PinningEnabled();
bool done = false;
for (iiter.Seek(key); iiter.Valid() && !done; iiter.Next()) {
Slice handle_value = iiter.value();
@ -1577,12 +1580,17 @@ Status BlockBasedTable::Get(const ReadOptions& read_options, const Slice& key,
s = Status::Corruption(Slice());
}
if (!get_context->SaveValue(parsed_key, biter.value(), &biter)) {
if (!get_context->SaveValue(parsed_key, biter.value(), pin_blocks)) {
done = true;
break;
}
}
s = biter.status();
if (pin_blocks && get_context->State() == GetContext::kMerge) {
// Pin blocks as long as we are merging
biter.DelegateCleanupsTo(pinned_iters_mgr);
}
}
}
if (s.ok()) {

120
table/cleanable_test.cc
View File

@ -47,30 +47,6 @@ TEST_F(CleanableTest, Register) {
}
// ~Cleanable
ASSERT_EQ(6, res);
// Test the Reset does cleanup
res = 1;
{
Cleanable c1;
c1.RegisterCleanup(Multiplier, &res, &n2); // res = 2;
c1.RegisterCleanup(Multiplier, &res, &n3); // res = 2 * 3;
c1.Reset();
ASSERT_EQ(6, res);
}
// ~Cleanable
ASSERT_EQ(6, res);
// Test Clenable is usable after Reset
res = 1;
{
Cleanable c1;
c1.RegisterCleanup(Multiplier, &res, &n2); // res = 2;
c1.Reset();
ASSERT_EQ(2, res);
c1.RegisterCleanup(Multiplier, &res, &n3); // res = 2 * 3;
}
// ~Cleanable
ASSERT_EQ(6, res);
}
// the first Cleanup is on stack and the rest on heap,
@ -198,102 +174,6 @@ TEST_F(CleanableTest, Delegation) {
ASSERT_EQ(5, res);
}
class PinnableSlice4Test : public PinnableSlice {
public:
void TestCharStrIsRegistered(char* s) {
ASSERT_EQ(cleanup_.function, ReleaseCharStrHeap);
ASSERT_EQ(cleanup_.arg1, s);
ASSERT_EQ(cleanup_.arg2, nullptr);
ASSERT_EQ(cleanup_.next, nullptr);
}
void TestStringIsRegistered(std::string* s) {
ASSERT_EQ(cleanup_.function, ReleaseStringHeap);
ASSERT_EQ(cleanup_.arg1, s);
ASSERT_EQ(cleanup_.arg2, nullptr);
ASSERT_EQ(cleanup_.next, nullptr);
}
};
// Putting the PinnableSlice tests here due to similarity to Cleanable tests
TEST_F(CleanableTest, PinnableSlice) {
int n2 = 2;
int res = 1;
const std::string const_str = "123";
const char* const_s = "123";
{
PinnableSlice4Test pSlice;
char* s = strdup(const_s);
pSlice.PinHeap(s, strlen(const_s));
std::string str;
str.assign(pSlice.data(), pSlice.size());
ASSERT_EQ(const_s, str);
pSlice.TestCharStrIsRegistered(s);
}
{
PinnableSlice4Test pSlice;
std::string* heap_str = new std::string(const_str);
pSlice.PinHeap(heap_str);
std::string str;
str.assign(pSlice.data(), pSlice.size());
ASSERT_EQ(const_str, str);
pSlice.TestStringIsRegistered(heap_str);
}
{
res = 1;
PinnableSlice4Test pSlice;
Slice slice(const_str);
pSlice.PinSlice(slice, Multiplier, &res, &n2);
std::string str;
str.assign(pSlice.data(), pSlice.size());
ASSERT_EQ(const_str, str);
}
// ~Cleanable
ASSERT_EQ(2, res);
{
res = 1;
PinnableSlice4Test pSlice;
Slice slice(const_str);
{
Cleanable c1;
c1.RegisterCleanup(Multiplier, &res, &n2); // res = 2;
pSlice.PinSlice(slice, &c1);
}
// ~Cleanable
ASSERT_EQ(1, res); // cleanups must have be delegated to pSlice
std::string str;
str.assign(pSlice.data(), pSlice.size());
ASSERT_EQ(const_str, str);
}
// ~Cleanable
ASSERT_EQ(2, res);
{
PinnableSlice4Test pSlice;
Slice slice(const_str);
pSlice.PinSelf(slice);
std::string str;
str.assign(pSlice.data(), pSlice.size());
ASSERT_EQ(const_str, str);
ASSERT_EQ(false, pSlice.IsPinned()); // self pinned
}
{
PinnableSlice4Test pSlice;
std::string* self_str_ptr = pSlice.GetSelf();
self_str_ptr->assign(const_str);
pSlice.PinSelf();
std::string str;
str.assign(pSlice.data(), pSlice.size());
ASSERT_EQ(const_str, str);
ASSERT_EQ(false, pSlice.IsPinned()); // self pinned
}
}
} // namespace rocksdb
int main(int argc, char** argv) {

13
table/cuckoo_table_reader_test.cc
View File

@ -123,12 +123,12 @@ class CuckooReaderTest : public testing::Test {
ASSERT_OK(reader.status());
// Assume no merge/deletion
for (uint32_t i = 0; i < num_items; ++i) {
PinnableSlice value;
std::string value;
GetContext get_context(ucomp, nullptr, nullptr, nullptr,
GetContext::kNotFound, Slice(user_keys[i]), &value,
nullptr, nullptr, nullptr, nullptr);
ASSERT_OK(reader.Get(ReadOptions(), Slice(keys[i]), &get_context));
ASSERT_STREQ(values[i].c_str(), value.data());
ASSERT_EQ(values[i], value);
}
}
void UpdateKeys(bool with_zero_seqno) {
@ -333,7 +333,7 @@ TEST_F(CuckooReaderTest, WhenKeyNotFound) {
AddHashLookups(not_found_user_key, 0, kNumHashFunc);
ParsedInternalKey ikey(not_found_user_key, 1000, kTypeValue);
AppendInternalKey(&not_found_key, ikey);
PinnableSlice value;
std::string value;
GetContext get_context(ucmp, nullptr, nullptr, nullptr, GetContext::kNotFound,
Slice(not_found_key), &value, nullptr, nullptr,
nullptr, nullptr);
@ -346,7 +346,6 @@ TEST_F(CuckooReaderTest, WhenKeyNotFound) {
ParsedInternalKey ikey2(not_found_user_key2, 1000, kTypeValue);
std::string not_found_key2;
AppendInternalKey(&not_found_key2, ikey2);
value.Reset();
GetContext get_context2(ucmp, nullptr, nullptr, nullptr,
GetContext::kNotFound, Slice(not_found_key2), &value,
nullptr, nullptr, nullptr, nullptr);
@ -361,7 +360,6 @@ TEST_F(CuckooReaderTest, WhenKeyNotFound) {
// Add hash values that map to empty buckets.
AddHashLookups(ExtractUserKey(unused_key).ToString(),
kNumHashFunc, kNumHashFunc);
value.Reset();
GetContext get_context3(ucmp, nullptr, nullptr, nullptr,
GetContext::kNotFound, Slice(unused_key), &value,
nullptr, nullptr, nullptr, nullptr);
@ -435,13 +433,12 @@ void WriteFile(const std::vector<std::string>& keys,
test::Uint64Comparator(), nullptr);
ASSERT_OK(reader.status());
ReadOptions r_options;
PinnableSlice value;
std::string value;
// Assume only the fast path is triggered
GetContext get_context(nullptr, nullptr, nullptr, nullptr,
GetContext::kNotFound, Slice(), &value, nullptr,
nullptr, nullptr, nullptr);
for (uint64_t i = 0; i < num; ++i) {
value.Reset();
value.clear();
ASSERT_OK(reader.Get(r_options, Slice(keys[i]), &get_context));
ASSERT_TRUE(Slice(keys[i]) == Slice(&keys[i][0], 4));
@ -483,7 +480,7 @@ void ReadKeys(uint64_t num, uint32_t batch_size) {
}
std::random_shuffle(keys.begin(), keys.end());
PinnableSlice value;
std::string value;
// Assume only the fast path is triggered
GetContext get_context(nullptr, nullptr, nullptr, nullptr,
GetContext::kNotFound, Slice(), &value, nullptr,

50
table/get_context.cc
View File

@ -35,7 +35,7 @@ void appendToReplayLog(std::string* replay_log, ValueType type, Slice value) {
GetContext::GetContext(const Comparator* ucmp,
const MergeOperator* merge_operator, Logger* logger,
Statistics* statistics, GetState init_state,
const Slice& user_key, PinnableSlice* pSlice,
const Slice& user_key, std::string* ret_value,
bool* value_found, MergeContext* merge_context,
RangeDelAggregator* _range_del_agg, Env* env,
SequenceNumber* seq,
@ -46,7 +46,7 @@ GetContext::GetContext(const Comparator* ucmp,
statistics_(statistics),
state_(init_state),
user_key_(user_key),
pSlice_(pSlice),
value_(ret_value),
value_found_(value_found),
merge_context_(merge_context),
range_del_agg_(_range_del_agg),
@ -76,13 +76,13 @@ void GetContext::SaveValue(const Slice& value, SequenceNumber seq) {
appendToReplayLog(replay_log_, kTypeValue, value);
state_ = kFound;
if (LIKELY(pSlice_ != nullptr)) {
pSlice_->PinSelf(value);
if (value_ != nullptr) {
value_->assign(value.data(), value.size());
}
}
bool GetContext::SaveValue(const ParsedInternalKey& parsed_key,
const Slice& value, Cleanable* value_pinner) {
const Slice& value, bool value_pinned) {
assert((state_ != kMerge && parsed_key.type != kTypeMerge) ||
merge_context_ != nullptr);
if (ucmp_->Equal(parsed_key.user_key, user_key_)) {
@ -106,22 +106,17 @@ bool GetContext::SaveValue(const ParsedInternalKey& parsed_key,
assert(state_ == kNotFound || state_ == kMerge);
if (kNotFound == state_) {
state_ = kFound;
if (LIKELY(pSlice_ != nullptr)) {
if (LIKELY(value_pinner != nullptr)) {
pSlice_->PinSlice(value, value_pinner);
} else {
pSlice_->PinSelf(value);
}
if (value_ != nullptr) {
value_->assign(value.data(), value.size());
}
} else if (kMerge == state_) {
assert(merge_operator_ != nullptr);
state_ = kFound;
if (LIKELY(pSlice_ != nullptr)) {
if (value_ != nullptr) {
Status merge_status = MergeHelper::TimedFullMerge(
merge_operator_, user_key_, &value,
merge_context_->GetOperands(), pSlice_->GetSelf(), logger_,
statistics_, env_);
pSlice_->PinSelf();
merge_context_->GetOperands(), value_, logger_, statistics_,
env_);
if (!merge_status.ok()) {
state_ = kCorrupt;
}
@ -139,12 +134,12 @@ bool GetContext::SaveValue(const ParsedInternalKey& parsed_key,
state_ = kDeleted;
} else if (kMerge == state_) {
state_ = kFound;
if (LIKELY(pSlice_ != nullptr)) {
Status merge_status = MergeHelper::TimedFullMerge(
merge_operator_, user_key_, nullptr,
merge_context_->GetOperands(), pSlice_->GetSelf(), logger_,
statistics_, env_);
pSlice_->PinSelf();
if (value_ != nullptr) {
Status merge_status =
MergeHelper::TimedFullMerge(merge_operator_, user_key_, nullptr,
merge_context_->GetOperands(),
value_, logger_, statistics_, env_);
if (!merge_status.ok()) {
state_ = kCorrupt;
}
@ -155,14 +150,7 @@ bool GetContext::SaveValue(const ParsedInternalKey& parsed_key,
case kTypeMerge:
assert(state_ == kNotFound || state_ == kMerge);
state_ = kMerge;
// value_pinner is not set from plain_table_reader.cc for example.
if (pinned_iters_mgr() && pinned_iters_mgr()->PinningEnabled() &&
value_pinner != nullptr) {
value_pinner->DelegateCleanupsTo(pinned_iters_mgr());
merge_context_->PushOperand(value, true /*value_pinned*/);
} else {
merge_context_->PushOperand(value, false);
}
merge_context_->PushOperand(value, value_pinned);
return true;
default:
@ -178,7 +166,6 @@ bool GetContext::SaveValue(const ParsedInternalKey& parsed_key,
void replayGetContextLog(const Slice& replay_log, const Slice& user_key,
GetContext* get_context) {
#ifndef ROCKSDB_LITE
static Cleanable nonToClean;
Slice s = replay_log;
while (s.size()) {
auto type = static_cast<ValueType>(*s.data());
@ -191,8 +178,7 @@ void replayGetContextLog(const Slice& replay_log, const Slice& user_key,
// Since SequenceNumber is not stored and unknown, we will use
// kMaxSequenceNumber.
get_context->SaveValue(
ParsedInternalKey(user_key, kMaxSequenceNumber, type), value,
&nonToClean);
ParsedInternalKey(user_key, kMaxSequenceNumber, type), value, true);
}
#else // ROCKSDB_LITE
assert(false);

7
table/get_context.h
View File

@ -9,7 +9,6 @@
#include "db/range_del_aggregator.h"
#include "rocksdb/env.h"
#include "rocksdb/types.h"
#include "table/block.h"
namespace rocksdb {
class MergeContext;
@ -27,7 +26,7 @@ class GetContext {
GetContext(const Comparator* ucmp, const MergeOperator* merge_operator,
Logger* logger, Statistics* statistics, GetState init_state,
const Slice& user_key, PinnableSlice* pSlice, bool* value_found,
const Slice& user_key, std::string* ret_value, bool* value_found,
MergeContext* merge_context, RangeDelAggregator* range_del_agg,
Env* env, SequenceNumber* seq = nullptr,
PinnedIteratorsManager* _pinned_iters_mgr = nullptr);
@ -40,7 +39,7 @@ class GetContext {
// Returns True if more keys need to be read (due to merges) or
// False if the complete value has been found.
bool SaveValue(const ParsedInternalKey& parsed_key, const Slice& value,
Cleanable* value_pinner = nullptr);
bool value_pinned = false);
// Simplified version of the previous function. Should only be used when we
// know that the operation is a Put.
@ -69,7 +68,7 @@ class GetContext {
GetState state_;
Slice user_key_;
PinnableSlice* pSlice_;
std::string* value_;
bool* value_found_; // Is value set correctly? Used by KeyMayExist
MergeContext* merge_context_;
RangeDelAggregator* range_del_agg_;

18
table/iterator.cc
View File

@ -21,6 +21,24 @@ Cleanable::Cleanable() {
Cleanable::~Cleanable() { DoCleanup(); }
void Cleanable::Reset() {
DoCleanup();
cleanup_.function = nullptr;
cleanup_.next = nullptr;
}
void Cleanable::DoCleanup() {
if (cleanup_.function != nullptr) {
(*cleanup_.function)(cleanup_.arg1, cleanup_.arg2);
for (Cleanup* c = cleanup_.next; c != nullptr;) {
(*c->function)(c->arg1, c->arg2);
Cleanup* next = c->next;
delete c;
c = next;
}
}
}
// If the entire linked list was on heap we could have simply add attach one
// link list to another. However the head is an embeded object to avoid the cost
// of creating objects for most of the use cases when the Cleanable has only one

2
table/table_reader_bench.cc
View File

@ -166,7 +166,7 @@ void TableReaderBenchmark(Options& opts, EnvOptions& env_options,
std::string key = MakeKey(r1, r2, through_db);
uint64_t start_time = Now(env, measured_by_nanosecond);
if (!through_db) {
PinnableSlice value;
std::string value;
MergeContext merge_context;
RangeDelAggregator range_del_agg(ikc, {} /* snapshots */);
GetContext get_context(ioptions.user_comparator,

9
table/table_test.cc
View File

@ -1968,12 +1968,12 @@ TEST_F(BlockBasedTableTest, FilterBlockInBlockCache) {
ASSERT_OK(c3.Reopen(ioptions4));
reader = dynamic_cast<BlockBasedTable*>(c3.GetTableReader());
ASSERT_TRUE(!reader->TEST_filter_block_preloaded());
PinnableSlice value;
std::string value;
GetContext get_context(options.comparator, nullptr, nullptr, nullptr,
GetContext::kNotFound, user_key, &value, nullptr,
nullptr, nullptr, nullptr);
ASSERT_OK(reader->Get(ReadOptions(), user_key, &get_context));
ASSERT_STREQ(value.data(), "hello");
ASSERT_EQ(value, "hello");
BlockCachePropertiesSnapshot props(options.statistics.get());
props.AssertFilterBlockStat(0, 0);
c3.ResetTableReader();
@ -2051,7 +2051,7 @@ TEST_F(BlockBasedTableTest, BlockReadCountTest) {
c.Finish(options, ioptions, table_options,
GetPlainInternalComparator(options.comparator), &keys, &kvmap);
auto reader = c.GetTableReader();
PinnableSlice value;
std::string value;
GetContext get_context(options.comparator, nullptr, nullptr, nullptr,
GetContext::kNotFound, user_key, &value, nullptr,
nullptr, nullptr, nullptr);
@ -2065,14 +2065,13 @@ TEST_F(BlockBasedTableTest, BlockReadCountTest) {
ASSERT_EQ(perf_context.block_read_count, 1);
}
ASSERT_EQ(get_context.State(), GetContext::kFound);
ASSERT_STREQ(value.data(), "hello");
ASSERT_EQ(value, "hello");
// Get non-existing key
user_key = "does-not-exist";
internal_key = InternalKey(user_key, 0, kTypeValue);
encoded_key = internal_key.Encode().ToString();
value.Reset();
get_context = GetContext(options.comparator, nullptr, nullptr, nullptr,
GetContext::kNotFound, user_key, &value, nullptr,
nullptr, nullptr, nullptr);

15
tools/db_bench_tool.cc
View File

@ -229,8 +229,6 @@ DEFINE_bool(reverse_iterator, false,
DEFINE_bool(use_uint64_comparator, false, "use Uint64 user comparator");
DEFINE_bool(pin_slice, false, "use pinnable slice for point lookup");
DEFINE_int64(batch_size, 1, "Batch size");
static bool ValidateKeySize(const char* flagname, int32_t value) {
@ -3774,7 +3772,6 @@ class Benchmark {
std::unique_ptr<const char[]> key_guard;
Slice key = AllocateKey(&key_guard);
std::string value;
PinnableSlice pSlice;
Duration duration(FLAGS_duration, reads_);
while (!duration.Done(1)) {
@ -3790,19 +3787,11 @@ class Benchmark {
s = db_with_cfh->db->Get(options, db_with_cfh->GetCfh(key_rand), key,
&value);
} else {
if (FLAGS_pin_slice == 1) {
pSlice.Reset();
s = db_with_cfh->db->Get(
options, db_with_cfh->db->DefaultColumnFamily(), key, &pSlice);
} else {
s = db_with_cfh->db->Get(
options, db_with_cfh->db->DefaultColumnFamily(), key, &value);
}
s = db_with_cfh->db->Get(options, key, &value);
}
if (s.ok()) {
found++;
bytes +=
key.size() + (FLAGS_pin_slice == 1 ? pSlice.size() : value.size());
bytes += key.size() + value.size();
} else if (!s.IsNotFound()) {
fprintf(stderr, "Get returned an error: %s\n", s.ToString().c_str());
abort();

49
util/testutil.cc
View File

@ -12,59 +12,10 @@
#include <cctype>
#include <sstream>
#include "db/memtable_list.h"
#include "port/port.h"
#include "util/file_reader_writer.h"
namespace rocksdb {
// These methods are deprecated and only being used in tests for backward
// compatibility
bool MemTableListVersion::Get(const LookupKey& key, std::string* value,
Status* s, MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
SequenceNumber* seq,
const ReadOptions& read_opts) {
PinnableSlice pSlice;
PinnableSlice* pSlicePtr = value != nullptr ? &pSlice : nullptr;
auto res =
Get(key, pSlicePtr, s, merge_context, range_del_agg, seq, read_opts);
if (value != nullptr) {
value->assign(pSlice.data(), pSlice.size());
}
return res;
}
bool MemTableListVersion::Get(const LookupKey& key, std::string* value,
Status* s, MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
SequenceNumber seq;
return Get(key, value, s, merge_context, range_del_agg, &seq, read_opts);
}
bool MemTable::Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg, SequenceNumber* seq,
const ReadOptions& read_opts) {
PinnableSlice pSlice;
PinnableSlice* pSlicePtr = value != nullptr ? &pSlice : nullptr;
auto res =
Get(key, pSlicePtr, s, merge_context, range_del_agg, seq, read_opts);
if (value != nullptr) {
value->assign(pSlice.data(), pSlice.size());
}
return res;
}
bool MemTable::Get(const LookupKey& key, std::string* value, Status* s,
MergeContext* merge_context,
RangeDelAggregator* range_del_agg,
const ReadOptions& read_opts) {
SequenceNumber seq;
return Get(key, value, s, merge_context, range_del_agg, &seq, read_opts);
}
namespace test {
Slice RandomString(Random* rnd, int len, std::string* dst) {

2
utilities/document/document_db.cc
View File

@ -1039,7 +1039,7 @@ class DocumentDBImpl : public DocumentDB {
// RocksDB functions
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice) override {
std::string* value) override {
return Status::NotSupported("");
}
virtual Status Get(const ReadOptions& options, const Slice& key,

19
utilities/ttl/db_ttl_impl.cc
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@ -170,17 +170,6 @@ bool DBWithTTLImpl::IsStale(const Slice& value, int32_t ttl, Env* env) {
return (timestamp_value + ttl) < curtime;
}
// Strips the TS from the end of the slice
Status DBWithTTLImpl::StripTS(Slice* slice) {
Status st;
if (slice->size() < kTSLength) {
return Status::Corruption("Bad timestamp in key-value");
}
// Erasing characters which hold the TS
slice->remove_suffix(kTSLength);
return st;
}
// Strips the TS from the end of the string
Status DBWithTTLImpl::StripTS(std::string* str) {
Status st;
@ -202,16 +191,16 @@ Status DBWithTTLImpl::Put(const WriteOptions& options,
Status DBWithTTLImpl::Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice) {
Status st = db_->Get(options, column_family, key, pSlice);
std::string* value) {
Status st = db_->Get(options, column_family, key, value);
if (!st.ok()) {
return st;
}
st = SanityCheckTimestamp(*pSlice);
st = SanityCheckTimestamp(*value);
if (!st.ok()) {
return st;
}
return StripTS(pSlice);
return StripTS(value);
}
std::vector<Status> DBWithTTLImpl::MultiGet(

4
utilities/ttl/db_ttl_impl.h
View File

@ -51,7 +51,7 @@ class DBWithTTLImpl : public DBWithTTL {
using StackableDB::Get;
virtual Status Get(const ReadOptions& options,
ColumnFamilyHandle* column_family, const Slice& key,
PinnableSlice* pSlice) override;
std::string* value) override;
using StackableDB::MultiGet;
virtual std::vector<Status> MultiGet(
@ -87,8 +87,6 @@ class DBWithTTLImpl : public DBWithTTL {
static Status StripTS(std::string* str);
static Status StripTS(Slice* str);
static const uint32_t kTSLength = sizeof(int32_t); // size of timestamp
static const int32_t kMinTimestamp = 1368146402; // 05/09/2013:5:40PM GMT-8