fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
297 lines
8.5 KiB
297 lines
8.5 KiB
// 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 Env is an interface used by the rocksdb implementation to access
|
|
// operating system functionality like the filesystem etc. Callers
|
|
// may wish to provide a custom Env object when opening a database to
|
|
// get fine gain control; e.g., to rate limit file system operations.
|
|
//
|
|
// All Env implementations are safe for concurrent access from
|
|
// multiple threads without any external synchronization.
|
|
|
|
#pragma once
|
|
|
|
#include "port/win/win_thread.h"
|
|
#include <rocksdb/env.h>
|
|
#include "util/threadpool_imp.h"
|
|
|
|
#include <stdint.h>
|
|
#include <windows.h>
|
|
|
|
#include <mutex>
|
|
#include <vector>
|
|
#include <string>
|
|
|
|
|
|
#undef GetCurrentTime
|
|
#undef DeleteFile
|
|
#undef GetTickCount
|
|
|
|
namespace rocksdb {
|
|
namespace port {
|
|
|
|
// Currently not designed for inheritance but rather a replacement
|
|
class WinEnvThreads {
|
|
public:
|
|
|
|
explicit WinEnvThreads(Env* hosted_env);
|
|
|
|
~WinEnvThreads();
|
|
|
|
WinEnvThreads(const WinEnvThreads&) = delete;
|
|
WinEnvThreads& operator=(const WinEnvThreads&) = delete;
|
|
|
|
void Schedule(void(*function)(void*), void* arg, Env::Priority pri,
|
|
void* tag,
|
|
void(*unschedFunction)(void* arg));
|
|
|
|
int UnSchedule(void* arg, Env::Priority pri);
|
|
|
|
void StartThread(void(*function)(void* arg), void* arg);
|
|
|
|
void WaitForJoin();
|
|
|
|
unsigned int GetThreadPoolQueueLen(Env::Priority pri) const;
|
|
|
|
static uint64_t gettid();
|
|
|
|
uint64_t GetThreadID() const;
|
|
|
|
void SleepForMicroseconds(int micros);
|
|
|
|
// Allow increasing the number of worker threads.
|
|
void SetBackgroundThreads(int num, Env::Priority pri);
|
|
int GetBackgroundThreads(Env::Priority pri);
|
|
|
|
void IncBackgroundThreadsIfNeeded(int num, Env::Priority pri);
|
|
|
|
private:
|
|
|
|
Env* hosted_env_;
|
|
mutable std::mutex mu_;
|
|
std::vector<ThreadPoolImpl> thread_pools_;
|
|
std::vector<WindowsThread> threads_to_join_;
|
|
|
|
};
|
|
|
|
// Designed for inheritance so can be re-used
|
|
// but certain parts replaced
|
|
class WinEnvIO {
|
|
public:
|
|
explicit WinEnvIO(Env* hosted_env);
|
|
|
|
virtual ~WinEnvIO();
|
|
|
|
virtual Status DeleteFile(const std::string& fname);
|
|
|
|
virtual Status GetCurrentTime(int64_t* unix_time);
|
|
|
|
virtual Status NewSequentialFile(const std::string& fname,
|
|
std::unique_ptr<SequentialFile>* result,
|
|
const EnvOptions& options);
|
|
|
|
virtual Status NewRandomAccessFile(const std::string& fname,
|
|
std::unique_ptr<RandomAccessFile>* result,
|
|
const EnvOptions& options);
|
|
|
|
virtual Status NewWritableFile(const std::string& fname,
|
|
std::unique_ptr<WritableFile>* result,
|
|
const EnvOptions& options);
|
|
|
|
// The returned file will only be accessed by one thread at a time.
|
|
virtual Status NewRandomRWFile(const std::string& fname,
|
|
unique_ptr<RandomRWFile>* result,
|
|
const EnvOptions& options);
|
|
|
|
virtual Status NewDirectory(const std::string& name,
|
|
std::unique_ptr<Directory>* result);
|
|
|
|
virtual Status FileExists(const std::string& fname);
|
|
|
|
virtual Status GetChildren(const std::string& dir,
|
|
std::vector<std::string>* result);
|
|
|
|
virtual Status CreateDir(const std::string& name);
|
|
|
|
virtual Status CreateDirIfMissing(const std::string& name);
|
|
|
|
virtual Status DeleteDir(const std::string& name);
|
|
|
|
virtual Status GetFileSize(const std::string& fname,
|
|
uint64_t* size);
|
|
|
|
static uint64_t FileTimeToUnixTime(const FILETIME& ftTime);
|
|
|
|
virtual Status GetFileModificationTime(const std::string& fname,
|
|
uint64_t* file_mtime);
|
|
|
|
virtual Status RenameFile(const std::string& src,
|
|
const std::string& target);
|
|
|
|
virtual Status LinkFile(const std::string& src,
|
|
const std::string& target);
|
|
|
|
virtual Status LockFile(const std::string& lockFname,
|
|
FileLock** lock);
|
|
|
|
virtual Status UnlockFile(FileLock* lock);
|
|
|
|
virtual Status GetTestDirectory(std::string* result);
|
|
|
|
virtual Status NewLogger(const std::string& fname,
|
|
std::shared_ptr<Logger>* result);
|
|
|
|
virtual uint64_t NowMicros();
|
|
|
|
virtual uint64_t NowNanos();
|
|
|
|
virtual Status GetHostName(char* name, uint64_t len);
|
|
|
|
virtual Status GetAbsolutePath(const std::string& db_path,
|
|
std::string* output_path);
|
|
|
|
virtual std::string TimeToString(uint64_t secondsSince1970);
|
|
|
|
virtual EnvOptions OptimizeForLogWrite(const EnvOptions& env_options,
|
|
const DBOptions& db_options) const;
|
|
|
|
virtual EnvOptions OptimizeForManifestWrite(
|
|
const EnvOptions& env_options) const;
|
|
|
|
size_t GetPageSize() const { return page_size_; }
|
|
|
|
size_t GetAllocationGranularity() const { return allocation_granularity_; }
|
|
|
|
uint64_t GetPerfCounterFrequency() const { return perf_counter_frequency_; }
|
|
|
|
private:
|
|
// Returns true iff the named directory exists and is a directory.
|
|
virtual bool DirExists(const std::string& dname);
|
|
|
|
typedef VOID(WINAPI * FnGetSystemTimePreciseAsFileTime)(LPFILETIME);
|
|
|
|
Env* hosted_env_;
|
|
size_t page_size_;
|
|
size_t allocation_granularity_;
|
|
uint64_t perf_counter_frequency_;
|
|
FnGetSystemTimePreciseAsFileTime GetSystemTimePreciseAsFileTime_;
|
|
};
|
|
|
|
class WinEnv : public Env {
|
|
public:
|
|
WinEnv();
|
|
|
|
~WinEnv();
|
|
|
|
Status DeleteFile(const std::string& fname) override;
|
|
|
|
Status GetCurrentTime(int64_t* unix_time) override;
|
|
|
|
Status NewSequentialFile(const std::string& fname,
|
|
std::unique_ptr<SequentialFile>* result,
|
|
const EnvOptions& options) override;
|
|
|
|
Status NewRandomAccessFile(const std::string& fname,
|
|
std::unique_ptr<RandomAccessFile>* result,
|
|
const EnvOptions& options) override;
|
|
|
|
Status NewWritableFile(const std::string& fname,
|
|
std::unique_ptr<WritableFile>* result,
|
|
const EnvOptions& options) override;
|
|
|
|
// The returned file will only be accessed by one thread at a time.
|
|
Status NewRandomRWFile(const std::string& fname,
|
|
unique_ptr<RandomRWFile>* result,
|
|
const EnvOptions& options) override;
|
|
|
|
Status NewDirectory(const std::string& name,
|
|
std::unique_ptr<Directory>* result) override;
|
|
|
|
Status FileExists(const std::string& fname) override;
|
|
|
|
Status GetChildren(const std::string& dir,
|
|
std::vector<std::string>* result) override;
|
|
|
|
Status CreateDir(const std::string& name) override;
|
|
|
|
Status CreateDirIfMissing(const std::string& name) override;
|
|
|
|
Status DeleteDir(const std::string& name) override;
|
|
|
|
Status GetFileSize(const std::string& fname,
|
|
uint64_t* size) override;
|
|
|
|
Status GetFileModificationTime(const std::string& fname,
|
|
uint64_t* file_mtime) override;
|
|
|
|
Status RenameFile(const std::string& src,
|
|
const std::string& target) override;
|
|
|
|
Status LinkFile(const std::string& src,
|
|
const std::string& target) override;
|
|
|
|
Status LockFile(const std::string& lockFname,
|
|
FileLock** lock) override;
|
|
|
|
Status UnlockFile(FileLock* lock) override;
|
|
|
|
Status GetTestDirectory(std::string* result) override;
|
|
|
|
Status NewLogger(const std::string& fname,
|
|
std::shared_ptr<Logger>* result) override;
|
|
|
|
uint64_t NowMicros() override;
|
|
|
|
uint64_t NowNanos() override;
|
|
|
|
Status GetHostName(char* name, uint64_t len) override;
|
|
|
|
Status GetAbsolutePath(const std::string& db_path,
|
|
std::string* output_path) override;
|
|
|
|
std::string TimeToString(uint64_t secondsSince1970) override;
|
|
|
|
Status GetThreadList(
|
|
std::vector<ThreadStatus>* thread_list) override;
|
|
|
|
void Schedule(void(*function)(void*), void* arg, Env::Priority pri,
|
|
void* tag,
|
|
void(*unschedFunction)(void* arg)) override;
|
|
|
|
int UnSchedule(void* arg, Env::Priority pri) override;
|
|
|
|
void StartThread(void(*function)(void* arg), void* arg) override;
|
|
|
|
void WaitForJoin();
|
|
|
|
unsigned int GetThreadPoolQueueLen(Env::Priority pri) const override;
|
|
|
|
uint64_t GetThreadID() const override;
|
|
|
|
void SleepForMicroseconds(int micros) override;
|
|
|
|
// Allow increasing the number of worker threads.
|
|
void SetBackgroundThreads(int num, Env::Priority pri) override;
|
|
int GetBackgroundThreads(Env::Priority pri) override;
|
|
|
|
void IncBackgroundThreadsIfNeeded(int num, Env::Priority pri) override;
|
|
|
|
EnvOptions OptimizeForLogWrite(const EnvOptions& env_options,
|
|
const DBOptions& db_options) const override;
|
|
|
|
EnvOptions OptimizeForManifestWrite(
|
|
const EnvOptions& env_options) const override;
|
|
|
|
private:
|
|
|
|
WinEnvIO winenv_io_;
|
|
WinEnvThreads winenv_threads_;
|
|
};
|
|
|
|
} // namespace port
|
|
} // namespace rocksdb
|
|
|