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comparison: ipc/chromium/src/base/platform_file_win.cc
ipc/chromium/src/base/platform_file_win.cc
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:0e8e76c67126 |
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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/platform_file.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 namespace base { | |
| 10 | |
| 11 PlatformFile CreatePlatformFile(const std::wstring& name, | |
| 12 int flags, | |
| 13 bool* created) { | |
| 14 DWORD disposition = 0; | |
| 15 | |
| 16 if (flags & PLATFORM_FILE_OPEN) | |
| 17 disposition = OPEN_EXISTING; | |
| 18 | |
| 19 if (flags & PLATFORM_FILE_CREATE) { | |
| 20 DCHECK(!disposition); | |
| 21 disposition = CREATE_NEW; | |
| 22 } | |
| 23 | |
| 24 if (flags & PLATFORM_FILE_OPEN_ALWAYS) { | |
| 25 DCHECK(!disposition); | |
| 26 disposition = OPEN_ALWAYS; | |
| 27 } | |
| 28 | |
| 29 if (flags & PLATFORM_FILE_CREATE_ALWAYS) { | |
| 30 DCHECK(!disposition); | |
| 31 disposition = CREATE_ALWAYS; | |
| 32 } | |
| 33 | |
| 34 if (!disposition) { | |
| 35 NOTREACHED(); | |
| 36 return NULL; | |
| 37 } | |
| 38 | |
| 39 DWORD access = (flags & PLATFORM_FILE_READ) ? GENERIC_READ : 0; | |
| 40 if (flags & PLATFORM_FILE_WRITE) | |
| 41 access |= GENERIC_WRITE; | |
| 42 | |
| 43 DWORD sharing = (flags & PLATFORM_FILE_EXCLUSIVE_READ) ? 0 : FILE_SHARE_READ; | |
| 44 if (!(flags & PLATFORM_FILE_EXCLUSIVE_WRITE)) | |
| 45 sharing |= FILE_SHARE_WRITE; | |
| 46 | |
| 47 DWORD create_flags = 0; | |
| 48 if (flags & PLATFORM_FILE_ASYNC) | |
| 49 create_flags |= FILE_FLAG_OVERLAPPED; | |
| 50 | |
| 51 HANDLE file = CreateFile(name.c_str(), access, sharing, NULL, disposition, | |
| 52 create_flags, NULL); | |
| 53 | |
| 54 if ((flags & PLATFORM_FILE_OPEN_ALWAYS) && created && | |
| 55 INVALID_HANDLE_VALUE != file) { | |
| 56 *created = (ERROR_ALREADY_EXISTS != GetLastError()); | |
| 57 } | |
| 58 | |
| 59 return file; | |
| 60 } | |
| 61 | |
| 62 } // namespace disk_cache |
