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Unified Diff: net/base/file_stream_context_win.cc

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/base/file_stream_context_win.cc
diff --git a/net/base/file_stream_context_win.cc b/net/base/file_stream_context_win.cc
deleted file mode 100644
index a41a74c431e672539494390947e8444574f835d7..0000000000000000000000000000000000000000
--- a/net/base/file_stream_context_win.cc
+++ /dev/null
@@ -1,250 +0,0 @@
-// 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 <windows.h>
-
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-#include "base/message_loop/message_loop_proxy.h"
-#include "base/metrics/histogram.h"
-#include "base/task_runner.h"
-#include "base/threading/worker_pool.h"
-#include "net/base/io_buffer.h"
-#include "net/base/net_errors.h"
-
-namespace net {
-
-namespace {
-
-void SetOffset(OVERLAPPED* overlapped, const LARGE_INTEGER& offset) {
- overlapped->Offset = offset.LowPart;
- overlapped->OffsetHigh = offset.HighPart;
-}
-
-void IncrementOffset(OVERLAPPED* overlapped, DWORD count) {
- LARGE_INTEGER offset;
- offset.LowPart = overlapped->Offset;
- offset.HighPart = overlapped->OffsetHigh;
- offset.QuadPart += static_cast<LONGLONG>(count);
- SetOffset(overlapped, offset);
-}
-
-} // namespace
-
-FileStream::Context::Context(const scoped_refptr<base::TaskRunner>& task_runner)
- : io_context_(),
- async_in_progress_(false),
- orphaned_(false),
- task_runner_(task_runner),
- async_read_initiated_(false),
- async_read_completed_(false),
- io_complete_for_read_received_(false),
- result_(0) {
- io_context_.handler = this;
- memset(&io_context_.overlapped, 0, sizeof(io_context_.overlapped));
-}
-
-FileStream::Context::Context(base::File file,
- const scoped_refptr<base::TaskRunner>& task_runner)
- : io_context_(),
- file_(file.Pass()),
- async_in_progress_(false),
- orphaned_(false),
- task_runner_(task_runner),
- async_read_initiated_(false),
- async_read_completed_(false),
- io_complete_for_read_received_(false),
- result_(0) {
- io_context_.handler = this;
- memset(&io_context_.overlapped, 0, sizeof(io_context_.overlapped));
- if (file_.IsValid()) {
- // TODO(hashimoto): Check that file_ is async.
- OnFileOpened();
- }
-}
-
-FileStream::Context::~Context() {
-}
-
-int FileStream::Context::Read(IOBuffer* buf,
- int buf_len,
- const CompletionCallback& callback) {
- CHECK(!async_in_progress_);
- DCHECK(!async_read_initiated_);
- DCHECK(!async_read_completed_);
- DCHECK(!io_complete_for_read_received_);
-
- IOCompletionIsPending(callback, buf);
-
- async_read_initiated_ = true;
- result_ = 0;
-
- task_runner_->PostTask(
- FROM_HERE,
- base::Bind(&FileStream::Context::ReadAsync, base::Unretained(this),
- file_.GetPlatformFile(), make_scoped_refptr(buf), buf_len,
- &io_context_.overlapped,
- base::MessageLoop::current()->message_loop_proxy()));
- return ERR_IO_PENDING;
-}
-
-int FileStream::Context::Write(IOBuffer* buf,
- int buf_len,
- const CompletionCallback& callback) {
- CHECK(!async_in_progress_);
-
- result_ = 0;
-
- DWORD bytes_written = 0;
- if (!WriteFile(file_.GetPlatformFile(), buf->data(), buf_len,
- &bytes_written, &io_context_.overlapped)) {
- IOResult error = IOResult::FromOSError(GetLastError());
- if (error.os_error == ERROR_IO_PENDING)
- IOCompletionIsPending(callback, buf);
- else
- LOG(WARNING) << "WriteFile failed: " << error.os_error;
- return static_cast<int>(error.result);
- }
-
- IOCompletionIsPending(callback, buf);
- return ERR_IO_PENDING;
-}
-
-FileStream::Context::IOResult FileStream::Context::SeekFileImpl(
- base::File::Whence whence,
- int64 offset) {
- LARGE_INTEGER result;
- result.QuadPart = file_.Seek(whence, offset);
- if (result.QuadPart >= 0) {
- SetOffset(&io_context_.overlapped, result);
- return IOResult(result.QuadPart, 0);
- }
-
- return IOResult::FromOSError(GetLastError());
-}
-
-void FileStream::Context::OnFileOpened() {
- base::MessageLoopForIO::current()->RegisterIOHandler(file_.GetPlatformFile(),
- this);
-}
-
-void FileStream::Context::IOCompletionIsPending(
- const CompletionCallback& callback,
- IOBuffer* buf) {
- DCHECK(callback_.is_null());
- callback_ = callback;
- in_flight_buf_ = buf; // Hold until the async operation ends.
- async_in_progress_ = true;
-}
-
-void FileStream::Context::OnIOCompleted(
- base::MessageLoopForIO::IOContext* context,
- DWORD bytes_read,
- DWORD error) {
- DCHECK_EQ(&io_context_, context);
- DCHECK(!callback_.is_null());
- DCHECK(async_in_progress_);
-
- if (!async_read_initiated_)
- async_in_progress_ = false;
-
- if (orphaned_) {
- io_complete_for_read_received_ = true;
- // If we are called due to a pending read and the asynchronous read task
- // has not completed we have to keep the context around until it completes.
- if (async_read_initiated_ && !async_read_completed_)
- return;
- DeleteOrphanedContext();
- return;
- }
-
- if (error == ERROR_HANDLE_EOF) {
- result_ = 0;
- } else if (error) {
- IOResult error_result = IOResult::FromOSError(error);
- result_ = static_cast<int>(error_result.result);
- } else {
- if (result_)
- DCHECK_EQ(result_, static_cast<int>(bytes_read));
- result_ = bytes_read;
- IncrementOffset(&io_context_.overlapped, bytes_read);
- }
-
- if (async_read_initiated_)
- io_complete_for_read_received_ = true;
-
- InvokeUserCallback();
-}
-
-void FileStream::Context::InvokeUserCallback() {
- // For an asynchonous Read operation don't invoke the user callback until
- // we receive the IO completion notification and the asynchronous Read
- // completion notification.
- if (async_read_initiated_) {
- if (!io_complete_for_read_received_ || !async_read_completed_)
- return;
- async_read_initiated_ = false;
- io_complete_for_read_received_ = false;
- async_read_completed_ = false;
- async_in_progress_ = false;
- }
- CompletionCallback temp_callback = callback_;
- callback_.Reset();
- scoped_refptr<IOBuffer> temp_buf = in_flight_buf_;
- in_flight_buf_ = NULL;
- temp_callback.Run(result_);
-}
-
-void FileStream::Context::DeleteOrphanedContext() {
- async_in_progress_ = false;
- callback_.Reset();
- in_flight_buf_ = NULL;
- CloseAndDelete();
-}
-
-// static
-void FileStream::Context::ReadAsync(
- FileStream::Context* context,
- HANDLE file,
- scoped_refptr<net::IOBuffer> buf,
- int buf_len,
- OVERLAPPED* overlapped,
- scoped_refptr<base::MessageLoopProxy> origin_thread_loop) {
- DWORD bytes_read = 0;
- BOOL ret = ::ReadFile(file, buf->data(), buf_len, &bytes_read, overlapped);
- origin_thread_loop->PostTask(
- FROM_HERE,
- base::Bind(&FileStream::Context::ReadAsyncResult,
- base::Unretained(context), ret, bytes_read, ::GetLastError()));
-}
-
-void FileStream::Context::ReadAsyncResult(BOOL read_file_ret,
- DWORD bytes_read,
- DWORD os_error) {
- // If the context is orphaned and we already received the io completion
- // notification then we should delete the context and get out.
- if (orphaned_ && io_complete_for_read_received_) {
- DeleteOrphanedContext();
- return;
- }
-
- async_read_completed_ = true;
- if (read_file_ret) {
- result_ = bytes_read;
- InvokeUserCallback();
- return;
- }
-
- IOResult error = IOResult::FromOSError(os_error);
- if (error.os_error == ERROR_IO_PENDING) {
- InvokeUserCallback();
- } else {
- OnIOCompleted(&io_context_, 0, error.os_error);
- }
-}
-
-} // namespace net
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