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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// 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 "base/basictypes.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/posix/eintr_wrapper.h"
#include "base/profiler/scoped_tracker.h"
#include "base/task_runner.h"
#include "base/task_runner_util.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
namespace net {
FileStream::Context::Context(const scoped_refptr<base::TaskRunner>& task_runner)
: async_in_progress_(false),
orphaned_(false),
task_runner_(task_runner) {
}
FileStream::Context::Context(base::File file,
const scoped_refptr<base::TaskRunner>& task_runner)
: file_(file.Pass()),
async_in_progress_(false),
orphaned_(false),
task_runner_(task_runner) {
}
FileStream::Context::~Context() {
}
int FileStream::Context::Read(IOBuffer* in_buf,
int buf_len,
const CompletionCallback& callback) {
DCHECK(!async_in_progress_);
scoped_refptr<IOBuffer> buf = in_buf;
const bool posted = base::PostTaskAndReplyWithResult(
task_runner_.get(),
FROM_HERE,
base::Bind(&Context::ReadFileImpl, base::Unretained(this), buf, buf_len),
base::Bind(&Context::OnAsyncCompleted,
base::Unretained(this),
IntToInt64(callback)));
DCHECK(posted);
async_in_progress_ = true;
return ERR_IO_PENDING;
}
int FileStream::Context::Write(IOBuffer* in_buf,
int buf_len,
const CompletionCallback& callback) {
DCHECK(!async_in_progress_);
scoped_refptr<IOBuffer> buf = in_buf;
const bool posted = base::PostTaskAndReplyWithResult(
task_runner_.get(),
FROM_HERE,
base::Bind(&Context::WriteFileImpl, base::Unretained(this), buf, buf_len),
base::Bind(&Context::OnAsyncCompleted,
base::Unretained(this),
IntToInt64(callback)));
DCHECK(posted);
async_in_progress_ = true;
return ERR_IO_PENDING;
}
FileStream::Context::IOResult FileStream::Context::SeekFileImpl(
base::File::Whence whence,
int64_t offset) {
int64_t res = file_.Seek(whence, 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) {
// TODO(pkasting): Remove ScopedTracker below once crbug.com/477117 is fixed.
tracked_objects::ScopedTracker tracking_profile(
FROM_HERE_WITH_EXPLICIT_FUNCTION(
"477117 FileStream::Context::ReadFileImpl"));
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
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