1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
#pragma once
#include <string>
#include "file/filename.h"
#include "options/db_options.h"
#include "rocksdb/env.h"
#include "rocksdb/file_system.h"
#include "rocksdb/sst_file_writer.h"
#include "rocksdb/status.h"
#include "rocksdb/system_clock.h"
#include "rocksdb/types.h"
#include "trace_replay/io_tracer.h"
namespace ROCKSDB_NAMESPACE {
// use_fsync maps to options.use_fsync, which determines the way that
// the file is synced after copying.
extern IOStatus CopyFile(FileSystem* fs, const std::string& source,
std::unique_ptr<WritableFileWriter>& dest_writer,
uint64_t size, bool use_fsync,
const std::shared_ptr<IOTracer>& io_tracer,
const Temperature temperature);
extern IOStatus CopyFile(FileSystem* fs, const std::string& source,
const std::string& destination, uint64_t size,
bool use_fsync,
const std::shared_ptr<IOTracer>& io_tracer,
const Temperature temperature);
inline IOStatus CopyFile(const std::shared_ptr<FileSystem>& fs,
const std::string& source,
const std::string& destination, uint64_t size,
bool use_fsync,
const std::shared_ptr<IOTracer>& io_tracer,
const Temperature temperature) {
return CopyFile(fs.get(), source, destination, size, use_fsync, io_tracer,
temperature);
}
extern IOStatus CreateFile(FileSystem* fs, const std::string& destination,
const std::string& contents, bool use_fsync);
inline IOStatus CreateFile(const std::shared_ptr<FileSystem>& fs,
const std::string& destination,
const std::string& contents, bool use_fsync) {
return CreateFile(fs.get(), destination, contents, use_fsync);
}
extern Status DeleteDBFile(const ImmutableDBOptions* db_options,
const std::string& fname,
const std::string& path_to_sync, const bool force_bg,
const bool force_fg);
extern IOStatus GenerateOneFileChecksum(
FileSystem* fs, const std::string& file_path,
FileChecksumGenFactory* checksum_factory,
const std::string& requested_checksum_func_name, std::string* file_checksum,
std::string* file_checksum_func_name,
size_t verify_checksums_readahead_size, bool allow_mmap_reads,
std::shared_ptr<IOTracer>& io_tracer, RateLimiter* rate_limiter,
Env::IOPriority rate_limiter_priority);
inline IOStatus PrepareIOFromReadOptions(const ReadOptions& ro,
SystemClock* clock, IOOptions& opts) {
if (ro.deadline.count()) {
std::chrono::microseconds now =
std::chrono::microseconds(clock->NowMicros());
// Ensure there is atleast 1us available. We don't want to pass a value of
// 0 as that means no timeout
if (now >= ro.deadline) {
return IOStatus::TimedOut("Deadline exceeded");
}
opts.timeout = ro.deadline - now;
}
if (ro.io_timeout.count() &&
(!opts.timeout.count() || ro.io_timeout < opts.timeout)) {
opts.timeout = ro.io_timeout;
}
opts.rate_limiter_priority = ro.rate_limiter_priority;
return IOStatus::OK();
}
// Test method to delete the input directory and all of its contents.
// This method is destructive and is meant for use only in tests!!!
Status DestroyDir(Env* env, const std::string& dir);
} // namespace ROCKSDB_NAMESPACE
|
