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Remove function from DBImpl that are not used anywhere 

Summary:
GetAndRefSuperVersionUnlocked
ReturnAndCleanupSuperVersionUnlocked
GetColumnFamilyHandleUnlocked

Are dead code that are not used any where
Closes https://github.com/facebook/rocksdb/pull/1802

Differential Revision: D4459948

Pulled By: IslamAbdelRahman

fbshipit-source-id: 30fa89d
This commit is contained in:
Islam AbdelRahman 2017-01-24 17:31:51 -08:00 committed by Facebook Github Bot
parent b0029bc7fa
commit 03ca2ac8a9
2 changed files with 1 additions and 57 deletions
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46
db/db_impl.cc
View File

@ -5493,22 +5493,6 @@ SuperVersion* DBImpl::GetAndRefSuperVersion(uint32_t column_family_id) {
return GetAndRefSuperVersion(cfd);
}
// REQUIRED: mutex is NOT held
SuperVersion* DBImpl::GetAndRefSuperVersionUnlocked(uint32_t column_family_id) {
ColumnFamilyData* cfd;
{
InstrumentedMutexLock l(&mutex_);
auto column_family_set = versions_->GetColumnFamilySet();
cfd = column_family_set->GetColumnFamily(column_family_id);
}
if (!cfd) {
return nullptr;
}
return GetAndRefSuperVersion(cfd);
}
void DBImpl::ReturnAndCleanupSuperVersion(ColumnFamilyData* cfd,
SuperVersion* sv) {
bool unref_sv = !cfd->ReturnThreadLocalSuperVersion(sv);
@ -5539,22 +5523,6 @@ void DBImpl::ReturnAndCleanupSuperVersion(uint32_t column_family_id,
ReturnAndCleanupSuperVersion(cfd, sv);
}
// REQUIRED: Mutex should NOT be held.
void DBImpl::ReturnAndCleanupSuperVersionUnlocked(uint32_t column_family_id,
SuperVersion* sv) {
ColumnFamilyData* cfd;
{
InstrumentedMutexLock l(&mutex_);
auto column_family_set = versions_->GetColumnFamilySet();
cfd = column_family_set->GetColumnFamily(column_family_id);
}
// If SuperVersion is held, and we successfully fetched a cfd using
// GetAndRefSuperVersion(), it must still exist.
assert(cfd != nullptr);
ReturnAndCleanupSuperVersion(cfd, sv);
}
// REQUIRED: this function should only be called on the write thread or if the
// mutex is held.
ColumnFamilyHandle* DBImpl::GetColumnFamilyHandle(uint32_t column_family_id) {
@ -5567,20 +5535,6 @@ ColumnFamilyHandle* DBImpl::GetColumnFamilyHandle(uint32_t column_family_id) {
return cf_memtables->GetColumnFamilyHandle();
}
// REQUIRED: mutex is NOT held.
ColumnFamilyHandle* DBImpl::GetColumnFamilyHandleUnlocked(
uint32_t column_family_id) {
ColumnFamilyMemTables* cf_memtables = column_family_memtables_.get();
InstrumentedMutexLock l(&mutex_);
if (!cf_memtables->Seek(column_family_id)) {
return nullptr;
}
return cf_memtables->GetColumnFamilyHandle();
}
void DBImpl::GetApproximateSizes(ColumnFamilyHandle* column_family,
const Range* range, int n, uint64_t* sizes,
uint8_t include_flags) {

12
db/db_impl.h
View File

@ -138,7 +138,7 @@ class DBImpl : public DB {
using DB::GetApproximateSizes;
virtual void GetApproximateSizes(ColumnFamilyHandle* column_family,
const Range* range, int n, uint64_t* sizes,
uint8_t include_flags
uint8_t include_flags
= INCLUDE_FILES) override;
using DB::CompactRange;
virtual Status CompactRange(const CompactRangeOptions& options,
@ -431,9 +431,6 @@ class DBImpl : public DB {
// mutex is held.
SuperVersion* GetAndRefSuperVersion(uint32_t column_family_id);
// Same as above, should called without mutex held and not on write thread.
SuperVersion* GetAndRefSuperVersionUnlocked(uint32_t column_family_id);
// Un-reference the super version and return it to thread local cache if
// needed. If it is the last reference of the super version. Clean it up
// after un-referencing it.
@ -444,18 +441,11 @@ class DBImpl : public DB {
// REQUIRED: this function should only be called on the write thread.
void ReturnAndCleanupSuperVersion(uint32_t colun_family_id, SuperVersion* sv);
// Same as above, should called without mutex held and not on write thread.
void ReturnAndCleanupSuperVersionUnlocked(uint32_t colun_family_id,
SuperVersion* sv);
// REQUIRED: this function should only be called on the write thread or if the
// mutex is held. Return value only valid until next call to this function or
// mutex is released.
ColumnFamilyHandle* GetColumnFamilyHandle(uint32_t column_family_id);
// Same as above, should called without mutex held and not on write thread.
ColumnFamilyHandle* GetColumnFamilyHandleUnlocked(uint32_t column_family_id);
// Returns the number of currently running flushes.
// REQUIREMENT: mutex_ must be held when calling this function.
int num_running_flushes() {