b06840aa7d
Summary: The change to the public behavior: * When opening a DB or creating new column family client gets a ColumnFamilyHandle. * As long as column family handle is alive, client can do whatever he wants with it, even drop it * Dropped column family can still be read from (using the column family handle) * Added a new call CloseColumnFamily(). Client has to close all column families that he has opened before deleting the DB * As soon as column family is closed, any calls to DB using that column family handle will fail (also any outstanding calls) Internally: * Ref-counting ColumnFamilyData * New thread-safety for ColumnFamilySet * Dropped column families are now completely dropped and their memory cleaned-up Test Plan: added some tests to column_family_test Reviewers: dhruba, haobo, kailiu, sdong CC: leveldb Differential Revision: https://reviews.facebook.net/D16101
95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
// Copyright (c) 2013, 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.
|
|
|
|
#include "db/db_impl.h"
|
|
#include <string>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include "db/version_set.h"
|
|
#include "rocksdb/db.h"
|
|
#include "rocksdb/env.h"
|
|
#include "port/port.h"
|
|
#include "util/mutexlock.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
void DBImpl::MaybeScheduleLogDBDeployStats() {
|
|
|
|
// There is a lock in the actual logger.
|
|
if (!logger_ || options_.db_stats_log_interval < 0
|
|
|| host_name_.empty()) {
|
|
return;
|
|
}
|
|
|
|
if(bg_logstats_scheduled_ || shutting_down_.Acquire_Load()) {
|
|
// Already scheduled
|
|
} else {
|
|
int64_t current_ts = 0;
|
|
Status st = env_->GetCurrentTime(¤t_ts);
|
|
if (!st.ok()) {
|
|
return;
|
|
}
|
|
if ((current_ts - last_log_ts) < options_.db_stats_log_interval) {
|
|
return;
|
|
}
|
|
last_log_ts = current_ts;
|
|
bg_logstats_scheduled_ = true;
|
|
env_->Schedule(&DBImpl::BGLogDBDeployStats, this);
|
|
}
|
|
}
|
|
|
|
void DBImpl::BGLogDBDeployStats(void* db) {
|
|
DBImpl* db_inst = reinterpret_cast<DBImpl*>(db);
|
|
db_inst->LogDBDeployStats();
|
|
}
|
|
|
|
void DBImpl::LogDBDeployStats() {
|
|
mutex_.Lock();
|
|
|
|
if (shutting_down_.Acquire_Load()) {
|
|
bg_logstats_scheduled_ = false;
|
|
bg_cv_.SignalAll();
|
|
mutex_.Unlock();
|
|
return;
|
|
}
|
|
|
|
char tmp_ver[100];
|
|
sprintf(tmp_ver, "%d.%d", kMajorVersion, kMinorVersion);
|
|
std::string version_info(tmp_ver);
|
|
|
|
uint64_t file_total_size = 0;
|
|
uint32_t file_total_num = 0;
|
|
Version* current = default_cf_handle_->cfd()->current();
|
|
for (int i = 0; i < current->NumberLevels(); i++) {
|
|
file_total_num += current->NumLevelFiles(i);
|
|
file_total_size += current->NumLevelBytes(i);
|
|
}
|
|
|
|
Version::LevelSummaryStorage scratch;
|
|
const char* file_num_summary = current->LevelSummary(&scratch);
|
|
std::string file_num_per_level(file_num_summary);
|
|
std::string data_size_per_level(file_num_summary);
|
|
|
|
mutex_.Unlock();
|
|
|
|
int64_t unix_ts;
|
|
env_->GetCurrentTime(&unix_ts);
|
|
|
|
logger_->Log_Deploy_Stats(version_info, host_name_,
|
|
db_absolute_path_, file_total_size, file_total_num, file_num_per_level,
|
|
data_size_per_level, unix_ts);
|
|
|
|
mutex_.Lock();
|
|
bg_logstats_scheduled_ = false;
|
|
bg_cv_.SignalAll();
|
|
mutex_.Unlock();
|
|
}
|
|
|
|
}
|