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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "platform/globals.h" | 5 #include "platform/globals.h" |
6 #if defined(TARGET_OS_WINDOWS) | 6 #if defined(TARGET_OS_WINDOWS) |
7 | 7 |
8 #include "bin/file.h" | 8 #include "bin/file.h" |
9 | 9 |
10 #include <fcntl.h> // NOLINT | 10 #include <fcntl.h> // NOLINT |
11 #include <io.h> // NOLINT | 11 #include <io.h> // NOLINT |
12 #include <stdio.h> // NOLINT | 12 #include <stdio.h> // NOLINT |
13 #include <string.h> // NOLINT | 13 #include <string.h> // NOLINT |
14 #include <sys/stat.h> // NOLINT | 14 #include <sys/stat.h> // NOLINT |
15 #include <WinIoCtl.h> // NOLINT | 15 #include <WinIoCtl.h> // NOLINT |
16 | 16 |
17 #include "bin/builtin.h" | 17 #include "bin/builtin.h" |
18 #include "bin/log.h" | 18 #include "bin/log.h" |
19 #include "bin/utils.h" | 19 #include "bin/utils.h" |
| 20 #include "platform/utils.h" |
20 | 21 |
21 | 22 |
22 namespace dart { | 23 namespace dart { |
23 namespace bin { | 24 namespace bin { |
24 | 25 |
25 class FileHandle { | 26 class FileHandle { |
26 public: | 27 public: |
27 explicit FileHandle(int fd) : fd_(fd) { } | 28 explicit FileHandle(int fd) : fd_(fd) { } |
28 ~FileHandle() { } | 29 ~FileHandle() { } |
29 int fd() const { return fd_; } | 30 int fd() const { return fd_; } |
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98 return _chsize_s(handle_->fd(), length) == 0; | 99 return _chsize_s(handle_->fd(), length) == 0; |
99 } | 100 } |
100 | 101 |
101 | 102 |
102 bool File::Flush() { | 103 bool File::Flush() { |
103 ASSERT(handle_->fd()); | 104 ASSERT(handle_->fd()); |
104 return _commit(handle_->fd()) != -1; | 105 return _commit(handle_->fd()) != -1; |
105 } | 106 } |
106 | 107 |
107 | 108 |
| 109 bool File::Lock(File::LockType lock, int64_t start, int64_t end) { |
| 110 ASSERT(handle_->fd() >= 0); |
| 111 ASSERT(end == -1 || end > start); |
| 112 HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(handle_->fd())); |
| 113 OVERLAPPED overlapped; |
| 114 ZeroMemory(&overlapped, sizeof(OVERLAPPED)); |
| 115 |
| 116 overlapped.Offset = Utils::Low32Bits(start); |
| 117 overlapped.OffsetHigh = Utils::High32Bits(start); |
| 118 |
| 119 int64_t length = end == -1 ? 0 : end - start; |
| 120 if (length == 0) length = kMaxInt64; |
| 121 int32_t length_low = Utils::Low32Bits(length); |
| 122 int32_t length_high = Utils::High32Bits(length); |
| 123 |
| 124 |
| 125 BOOL rc; |
| 126 switch (lock) { |
| 127 case File::kLockUnlock: |
| 128 rc = UnlockFileEx(handle, 0, length_low, length_high, &overlapped); |
| 129 break; |
| 130 case File::kLockShared: |
| 131 case File::kLockExclusive: { |
| 132 DWORD flags = LOCKFILE_FAIL_IMMEDIATELY; |
| 133 if (lock == File::kLockExclusive) { |
| 134 flags |= LOCKFILE_EXCLUSIVE_LOCK; |
| 135 } |
| 136 rc = LockFileEx(handle, flags, 0, |
| 137 length_low, length_high, &overlapped); |
| 138 break; |
| 139 } |
| 140 default: |
| 141 UNREACHABLE(); |
| 142 } |
| 143 return rc; |
| 144 } |
| 145 |
| 146 |
108 int64_t File::Length() { | 147 int64_t File::Length() { |
109 ASSERT(handle_->fd() >= 0); | 148 ASSERT(handle_->fd() >= 0); |
110 struct __stat64 st; | 149 struct __stat64 st; |
111 if (_fstat64(handle_->fd(), &st) == 0) { | 150 if (_fstat64(handle_->fd(), &st) == 0) { |
112 return st.st_size; | 151 return st.st_size; |
113 } | 152 } |
114 return -1; | 153 return -1; |
115 } | 154 } |
116 | 155 |
117 | 156 |
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430 SetLastError(ERROR_NOT_A_REPARSE_POINT); | 469 SetLastError(ERROR_NOT_A_REPARSE_POINT); |
431 return NULL; | 470 return NULL; |
432 } | 471 } |
433 | 472 |
434 target_offset /= sizeof(wchar_t); // Offset and length are in bytes. | 473 target_offset /= sizeof(wchar_t); // Offset and length are in bytes. |
435 target_length /= sizeof(wchar_t); | 474 target_length /= sizeof(wchar_t); |
436 target += target_offset; | 475 target += target_offset; |
437 // Remove "\??\" from beginning of target. | 476 // Remove "\??\" from beginning of target. |
438 if (target_length > 4 && wcsncmp(L"\\??\\", target, 4) == 0) { | 477 if (target_length > 4 && wcsncmp(L"\\??\\", target, 4) == 0) { |
439 target += 4; | 478 target += 4; |
440 target_length -=4; | 479 target_length -= 4; |
441 } | 480 } |
442 int utf8_length = WideCharToMultiByte(CP_UTF8, | 481 int utf8_length = WideCharToMultiByte(CP_UTF8, |
443 0, | 482 0, |
444 target, | 483 target, |
445 target_length, | 484 target_length, |
446 NULL, | 485 NULL, |
447 0, | 486 0, |
448 NULL, | 487 NULL, |
449 NULL); | 488 NULL); |
450 char* utf8_target = reinterpret_cast<char*>(malloc(utf8_length + 1)); | 489 char* utf8_target = reinterpret_cast<char*>(malloc(utf8_length + 1)); |
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645 return kIdentical; | 684 return kIdentical; |
646 } else { | 685 } else { |
647 return kDifferent; | 686 return kDifferent; |
648 } | 687 } |
649 } | 688 } |
650 | 689 |
651 } // namespace bin | 690 } // namespace bin |
652 } // namespace dart | 691 } // namespace dart |
653 | 692 |
654 #endif // defined(TARGET_OS_WINDOWS) | 693 #endif // defined(TARGET_OS_WINDOWS) |
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