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
90
91
92
93
94
95
96
97
98
99
100
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/file_stream_context.h"
#include <errno.h>
#include <utility>
#include "base/check.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/location.h"
#include "base/posix/eintr_wrapper.h"
#include "base/task/task_runner.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
namespace net {
FileStream::Context::Context(scoped_refptr<base::TaskRunner> task_runner)
: Context(base::File(), std::move(task_runner)) {}
FileStream::Context::Context(base::File file,
scoped_refptr<base::TaskRunner> task_runner)
: file_(std::move(file)), task_runner_(std::move(task_runner)) {}
FileStream::Context::~Context() = default;
int FileStream::Context::Read(IOBuffer* in_buf,
int buf_len,
CompletionOnceCallback callback) {
DCHECK(!async_in_progress_);
scoped_refptr<IOBuffer> buf = in_buf;
const bool posted = task_runner_->PostTaskAndReplyWithResult(
FROM_HERE,
base::BindOnce(&Context::ReadFileImpl, base::Unretained(this), buf,
buf_len),
base::BindOnce(&Context::OnAsyncCompleted, base::Unretained(this),
IntToInt64(std::move(callback))));
DCHECK(posted);
async_in_progress_ = true;
return ERR_IO_PENDING;
}
int FileStream::Context::Write(IOBuffer* in_buf,
int buf_len,
CompletionOnceCallback callback) {
DCHECK(!async_in_progress_);
scoped_refptr<IOBuffer> buf = in_buf;
const bool posted = task_runner_->PostTaskAndReplyWithResult(
FROM_HERE,
base::BindOnce(&Context::WriteFileImpl, base::Unretained(this), buf,
buf_len),
base::BindOnce(&Context::OnAsyncCompleted, base::Unretained(this),
IntToInt64(std::move(callback))));
DCHECK(posted);
async_in_progress_ = true;
return ERR_IO_PENDING;
}
FileStream::Context::IOResult FileStream::Context::SeekFileImpl(
int64_t offset) {
int64_t res = file_.Seek(base::File::FROM_BEGIN, offset);
if (res == -1)
return IOResult::FromOSError(errno);
return IOResult(res, 0);
}
void FileStream::Context::OnFileOpened() {
}
FileStream::Context::IOResult FileStream::Context::ReadFileImpl(
scoped_refptr<IOBuffer> buf,
int buf_len) {
int res = file_.ReadAtCurrentPosNoBestEffort(buf->data(), buf_len);
if (res == -1)
return IOResult::FromOSError(errno);
return IOResult(res, 0);
}
FileStream::Context::IOResult FileStream::Context::WriteFileImpl(
scoped_refptr<IOBuffer> buf,
int buf_len) {
int res = file_.WriteAtCurrentPosNoBestEffort(buf->data(), buf_len);
if (res == -1)
return IOResult::FromOSError(errno);
return IOResult(res, 0);
}
} // namespace net
|
