Move Windows Sandbox, trybots version (don't commit me!)

sandbox/src/shared_handles.cc

-// Copyright (c) 2006-2008 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 "sandbox/src/shared_handles.h"
-
-namespace sandbox {
-
-// Note once again the the assumption here is that the shared memory is
-// initialized with zeros in the process that calls SetHandle and that
-// the process that calls GetHandle 'sees' this memory.
-
-SharedHandles::SharedHandles() {
-  shared_.items = NULL;
-  shared_.max_items = 0;
-}
-
-bool SharedHandles::Init(void* raw_mem, size_t size_bytes) {
-  if (size_bytes < sizeof(shared_.items[0])) {
-    // The shared memory is too small!
-    return false;
-  }
-  shared_.items = static_cast<SharedItem*>(raw_mem);
-  shared_.max_items = size_bytes / sizeof(shared_.items[0]);
-  return true;
-}
-
-// Note that an empty slot is marked with a tag == 0 that is why is
-// not a valid imput tag
-bool SharedHandles::SetHandle(uint32 tag, HANDLE handle) {
-  if (0 == tag) {
-    // Invalid tag
-    return false;
-  }
-  // Find empty slot and put the tag and the handle there
-  SharedItem* empty_slot = FindByTag(0);
-  if (NULL == empty_slot) {
-    return false;
-  }
-  empty_slot->tag = tag;
-  empty_slot->item = handle;
-  return true;
-}
-
-bool SharedHandles::GetHandle(uint32 tag, HANDLE* handle) {
-  if (0 == tag) {
-    // Invalid tag
-    return false;
-  }
-  SharedItem* found = FindByTag(tag);
-  if (NULL == found) {
-    return false;
-  }
-  *handle = found->item;
-  return true;
-}
-
-SharedHandles::SharedItem* SharedHandles::FindByTag(uint32 tag) {
-  for (size_t ix = 0; ix != shared_.max_items; ++ix) {
-    if (tag == shared_.items[ix].tag) {
-      return &shared_.items[ix];
-    }
-  }
-  return NULL;
-}
-
-}  // namespace sandbox