Deleted OS_WIN and all Windows specific files from base.

base/sync_socket_win.cc

Index: base/sync_socket_win.cc
diff --git a/base/sync_socket_win.cc b/base/sync_socket_win.cc
deleted file mode 100644
index e5088162433f2f402a8809c1342142c028e07341..0000000000000000000000000000000000000000
--- a/base/sync_socket_win.cc
+++ /dev/null
@@ -1,342 +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 "base/sync_socket.h"
-
-#include "base/logging.h"
-#include "base/threading/thread_restrictions.h"
-#include "base/win/scoped_handle.h"
-
-namespace base {
-
-using win::ScopedHandle;
-
-namespace {
-// IMPORTANT: do not change how this name is generated because it will break
-// in sandboxed scenarios as we might have by-name policies that allow pipe
-// creation. Also keep the secure random number generation.
-const wchar_t kPipeNameFormat[] = L"\\\\.\\pipe\\chrome.sync.%u.%u.%lu";
-const size_t kPipePathMax =  arraysize(kPipeNameFormat) + (3 * 10) + 1;
-
-// To avoid users sending negative message lengths to Send/Receive
-// we clamp message lengths, which are size_t, to no more than INT_MAX.
-const size_t kMaxMessageLength = static_cast<size_t>(INT_MAX);
-
-const int kOutBufferSize = 4096;
-const int kInBufferSize = 4096;
-const int kDefaultTimeoutMilliSeconds = 1000;
-
-bool CreatePairImpl(HANDLE* socket_a, HANDLE* socket_b, bool overlapped) {
-  DCHECK_NE(socket_a, socket_b);
-  DCHECK_EQ(*socket_a, SyncSocket::kInvalidHandle);
-  DCHECK_EQ(*socket_b, SyncSocket::kInvalidHandle);
-
-  wchar_t name[kPipePathMax];
-  ScopedHandle handle_a;
-  DWORD flags = PIPE_ACCESS_DUPLEX | FILE_FLAG_FIRST_PIPE_INSTANCE;
-  if (overlapped)
-    flags |= FILE_FLAG_OVERLAPPED;
-
-  do {
-    unsigned int rnd_name;
-    if (rand_s(&rnd_name) != 0)
-      return false;
-
-    swprintf(name, kPipePathMax,
-             kPipeNameFormat,
-             GetCurrentProcessId(),
-             GetCurrentThreadId(),
-             rnd_name);
-
-    handle_a.Set(CreateNamedPipeW(
-        name,
-        flags,
-        PIPE_TYPE_BYTE | PIPE_READMODE_BYTE,
-        1,
-        kOutBufferSize,
-        kInBufferSize,
-        kDefaultTimeoutMilliSeconds,
-        NULL));
-  } while (!handle_a.IsValid() &&
-           (GetLastError() == ERROR_PIPE_BUSY));
-
-  if (!handle_a.IsValid()) {
-    NOTREACHED();
-    return false;
-  }
-
-  // The SECURITY_ANONYMOUS flag means that the server side (handle_a) cannot
-  // impersonate the client (handle_b). This allows us not to care which side
-  // ends up in which side of a privilege boundary.
-  flags = SECURITY_SQOS_PRESENT | SECURITY_ANONYMOUS;
-  if (overlapped)
-    flags |= FILE_FLAG_OVERLAPPED;
-
-  ScopedHandle handle_b(CreateFileW(name,
-                                    GENERIC_READ | GENERIC_WRITE,
-                                    0,          // no sharing.
-                                    NULL,       // default security attributes.
-                                    OPEN_EXISTING,  // opens existing pipe.
-                                    flags,
-                                    NULL));     // no template file.
-  if (!handle_b.IsValid()) {
-    DPLOG(ERROR) << "CreateFileW failed";
-    return false;
-  }
-
-  if (!ConnectNamedPipe(handle_a.Get(), NULL)) {
-    DWORD error = GetLastError();
-    if (error != ERROR_PIPE_CONNECTED) {
-      DPLOG(ERROR) << "ConnectNamedPipe failed";
-      return false;
-    }
-  }
-
-  *socket_a = handle_a.Take();
-  *socket_b = handle_b.Take();
-
-  return true;
-}
-
-// Inline helper to avoid having the cast everywhere.
-DWORD GetNextChunkSize(size_t current_pos, size_t max_size) {
-  // The following statement is for 64 bit portability.
-  return static_cast<DWORD>(((max_size - current_pos) <= UINT_MAX) ?
-      (max_size - current_pos) : UINT_MAX);
-}
-
-// Template function that supports calling ReadFile or WriteFile in an
-// overlapped fashion and waits for IO completion.  The function also waits
-// on an event that can be used to cancel the operation.  If the operation
-// is cancelled, the function returns and closes the relevant socket object.
-template <typename BufferType, typename Function>
-size_t CancelableFileOperation(Function operation,
-                               HANDLE file,
-                               BufferType* buffer,
-                               size_t length,
-                               WaitableEvent* io_event,
-                               WaitableEvent* cancel_event,
-                               CancelableSyncSocket* socket,
-                               DWORD timeout_in_ms) {
-  ThreadRestrictions::AssertIOAllowed();
-  // The buffer must be byte size or the length check won't make much sense.
-  COMPILE_ASSERT(sizeof(buffer[0]) == sizeof(char), incorrect_buffer_type);
-  DCHECK_GT(length, 0u);
-  DCHECK_LE(length, kMaxMessageLength);
-  DCHECK_NE(file, SyncSocket::kInvalidHandle);
-
-  // Track the finish time so we can calculate the timeout as data is read.
-  TimeTicks current_time, finish_time;
-  if (timeout_in_ms != INFINITE) {
-    current_time = TimeTicks::Now();
-    finish_time =
-        current_time + base::TimeDelta::FromMilliseconds(timeout_in_ms);
-  }
-
-  size_t count = 0;
-  do {
-    // The OVERLAPPED structure will be modified by ReadFile or WriteFile.
-    OVERLAPPED ol = { 0 };
-    ol.hEvent = io_event->handle();
-
-    const DWORD chunk = GetNextChunkSize(count, length);
-    // This is either the ReadFile or WriteFile call depending on whether
-    // we're receiving or sending data.
-    DWORD len = 0;
-    const BOOL operation_ok = operation(
-        file, static_cast<BufferType*>(buffer) + count, chunk, &len, &ol);
-    if (!operation_ok) {
-      if (::GetLastError() == ERROR_IO_PENDING) {
-        HANDLE events[] = { io_event->handle(), cancel_event->handle() };
-        const int wait_result = WaitForMultipleObjects(
-            arraysize(events), events, FALSE,
-            timeout_in_ms == INFINITE ?
-                timeout_in_ms :
-                static_cast<DWORD>(
-                    (finish_time - current_time).InMilliseconds()));
-        if (wait_result != WAIT_OBJECT_0 + 0) {
-          // CancelIo() doesn't synchronously cancel outstanding IO, only marks
-          // outstanding IO for cancellation. We must call GetOverlappedResult()
-          // below to ensure in flight writes complete before returning.
-          CancelIo(file);
-        }
-
-        // We set the |bWait| parameter to TRUE for GetOverlappedResult() to
-        // ensure writes are complete before returning.
-        if (!GetOverlappedResult(file, &ol, &len, TRUE))
-          len = 0;
-
-        if (wait_result == WAIT_OBJECT_0 + 1) {
-          DVLOG(1) << "Shutdown was signaled. Closing socket.";
-          socket->Close();
-          return count;
-        }
-
-        // Timeouts will be handled by the while() condition below since
-        // GetOverlappedResult() may complete successfully after CancelIo().
-        DCHECK(wait_result == WAIT_OBJECT_0 + 0 || wait_result == WAIT_TIMEOUT);
-      } else {
-        break;
-      }
-    }
-
-    count += len;
-
-    // Quit the operation if we can't write/read anymore.
-    if (len != chunk)
-      break;
-
-    // Since TimeTicks::Now() is expensive, only bother updating the time if we
-    // have more work to do.
-    if (timeout_in_ms != INFINITE && count < length)
-      current_time = base::TimeTicks::Now();
-  } while (count < length &&
-           (timeout_in_ms == INFINITE || current_time < finish_time));
-
-  return count;
-}
-
-}  // namespace
-
-#if defined(COMPONENT_BUILD)
-const SyncSocket::Handle SyncSocket::kInvalidHandle = INVALID_HANDLE_VALUE;
-#endif
-
-SyncSocket::SyncSocket() : handle_(kInvalidHandle) {}
-
-SyncSocket::~SyncSocket() {
-  Close();
-}
-
-// static
-bool SyncSocket::CreatePair(SyncSocket* socket_a, SyncSocket* socket_b) {
-  return CreatePairImpl(&socket_a->handle_, &socket_b->handle_, false);
-}
-
-// static
-SyncSocket::Handle SyncSocket::UnwrapHandle(
-    const TransitDescriptor& descriptor) {
-  return descriptor;
-}
-
-bool SyncSocket::PrepareTransitDescriptor(ProcessHandle peer_process_handle,
-                                          TransitDescriptor* descriptor) {
-  DCHECK(descriptor);
-  if (!::DuplicateHandle(GetCurrentProcess(), handle(), peer_process_handle,
-                         descriptor, 0, FALSE, DUPLICATE_SAME_ACCESS)) {
-    DPLOG(ERROR) << "Cannot duplicate socket handle for peer process.";
-    return false;
-  }
-  return true;
-}
-
-bool SyncSocket::Close() {
-  if (handle_ == kInvalidHandle)
-    return true;
-
-  const BOOL result = CloseHandle(handle_);
-  handle_ = kInvalidHandle;
-  return result == TRUE;
-}
-
-size_t SyncSocket::Send(const void* buffer, size_t length) {
-  ThreadRestrictions::AssertIOAllowed();
-  DCHECK_GT(length, 0u);
-  DCHECK_LE(length, kMaxMessageLength);
-  DCHECK_NE(handle_, kInvalidHandle);
-  size_t count = 0;
-  while (count < length) {
-    DWORD len;
-    DWORD chunk = GetNextChunkSize(count, length);
-    if (WriteFile(handle_, static_cast<const char*>(buffer) + count,
-                  chunk, &len, NULL) == FALSE) {
-      return count;
-    }
-    count += len;
-  }
-  return count;
-}
-
-size_t SyncSocket::ReceiveWithTimeout(void* buffer,
-                                      size_t length,
-                                      TimeDelta timeout) {
-  NOTIMPLEMENTED();
-  return 0;
-}
-
-size_t SyncSocket::Receive(void* buffer, size_t length) {
-  ThreadRestrictions::AssertIOAllowed();
-  DCHECK_GT(length, 0u);
-  DCHECK_LE(length, kMaxMessageLength);
-  DCHECK_NE(handle_, kInvalidHandle);
-  size_t count = 0;
-  while (count < length) {
-    DWORD len;
-    DWORD chunk = GetNextChunkSize(count, length);
-    if (ReadFile(handle_, static_cast<char*>(buffer) + count,
-                 chunk, &len, NULL) == FALSE) {
-      return count;
-    }
-    count += len;
-  }
-  return count;
-}
-
-size_t SyncSocket::Peek() {
-  DWORD available = 0;
-  PeekNamedPipe(handle_, NULL, 0, NULL, &available, NULL);
-  return available;
-}
-
-CancelableSyncSocket::CancelableSyncSocket()
-    : shutdown_event_(true, false), file_operation_(true, false) {
-}
-
-CancelableSyncSocket::CancelableSyncSocket(Handle handle)
-    : SyncSocket(handle), shutdown_event_(true, false),
-      file_operation_(true, false) {
-}
-
-bool CancelableSyncSocket::Shutdown() {
-  // This doesn't shut down the pipe immediately, but subsequent Receive or Send
-  // methods will fail straight away.
-  shutdown_event_.Signal();
-  return true;
-}
-
-bool CancelableSyncSocket::Close() {
-  const bool result = SyncSocket::Close();
-  shutdown_event_.Reset();
-  return result;
-}
-
-size_t CancelableSyncSocket::Send(const void* buffer, size_t length) {
-  static const DWORD kWaitTimeOutInMs = 500;
-  return CancelableFileOperation(
-      &WriteFile, handle_, reinterpret_cast<const char*>(buffer),
-      length, &file_operation_, &shutdown_event_, this, kWaitTimeOutInMs);
-}
-
-size_t CancelableSyncSocket::Receive(void* buffer, size_t length) {
-  return CancelableFileOperation(
-      &ReadFile, handle_, reinterpret_cast<char*>(buffer), length,
-      &file_operation_, &shutdown_event_, this, INFINITE);
-}
-
-size_t CancelableSyncSocket::ReceiveWithTimeout(void* buffer,
-                                                size_t length,
-                                                TimeDelta timeout) {
-  return CancelableFileOperation(
-      &ReadFile, handle_, reinterpret_cast<char*>(buffer), length,
-      &file_operation_, &shutdown_event_, this,
-      static_cast<DWORD>(timeout.InMilliseconds()));
-}
-
-// static
-bool CancelableSyncSocket::CreatePair(CancelableSyncSocket* socket_a,
-                                      CancelableSyncSocket* socket_b) {
-  return CreatePairImpl(&socket_a->handle_, &socket_b->handle_, true);
-}
-
-}  // namespace base