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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 #ifndef RUNTIME_BIN_FILE_H_ | 5 #ifndef RUNTIME_BIN_FILE_H_ |
6 #define RUNTIME_BIN_FILE_H_ | 6 #define RUNTIME_BIN_FILE_H_ |
7 | 7 |
8 #include <stdio.h> | 8 #include <stdio.h> |
9 #include <stdlib.h> | 9 #include <stdlib.h> |
10 #include <string.h> | 10 #include <string.h> |
11 #include <sys/types.h> | 11 #include <sys/types.h> |
12 | 12 |
13 #include "bin/builtin.h" | 13 #include "bin/builtin.h" |
14 #include "bin/dartutils.h" | 14 #include "bin/dartutils.h" |
15 #include "bin/log.h" | 15 #include "bin/log.h" |
16 #include "bin/reference_counting.h" | 16 #include "bin/reference_counting.h" |
17 | 17 |
18 namespace dart { | 18 namespace dart { |
19 namespace bin { | 19 namespace bin { |
20 | 20 |
21 // Forward declaration. | 21 // Forward declaration. |
22 class FileHandle; | 22 class FileHandle; |
23 | 23 |
| 24 class MappedMemory { |
| 25 public: |
| 26 MappedMemory(void* address, intptr_t size) : address_(address), size_(size) {} |
| 27 ~MappedMemory() { Unmap(); } |
| 28 |
| 29 void* address() const { return address_; } |
| 30 intptr_t size() const { return size_; } |
| 31 |
| 32 private: |
| 33 void Unmap(); |
| 34 |
| 35 void* address_; |
| 36 intptr_t size_; |
| 37 |
| 38 DISALLOW_COPY_AND_ASSIGN(MappedMemory); |
| 39 }; |
| 40 |
24 class File : public ReferenceCounted<File> { | 41 class File : public ReferenceCounted<File> { |
25 public: | 42 public: |
26 enum FileOpenMode { | 43 enum FileOpenMode { |
27 kRead = 0, | 44 kRead = 0, |
28 kWrite = 1, | 45 kWrite = 1, |
29 kTruncate = 1 << 2, | 46 kTruncate = 1 << 2, |
30 kWriteOnly = 1 << 3, | 47 kWriteOnly = 1 << 3, |
31 kWriteTruncate = kWrite | kTruncate, | 48 kWriteTruncate = kWrite | kTruncate, |
32 kWriteOnlyTruncate = kWriteOnly | kTruncate | 49 kWriteOnlyTruncate = kWriteOnly | kTruncate |
33 }; | 50 }; |
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76 kLockBlockingExclusive = 4, | 93 kLockBlockingExclusive = 4, |
77 kLockMax = 4 | 94 kLockMax = 4 |
78 }; | 95 }; |
79 | 96 |
80 intptr_t GetFD(); | 97 intptr_t GetFD(); |
81 | 98 |
82 enum MapType { | 99 enum MapType { |
83 kReadOnly = 0, | 100 kReadOnly = 0, |
84 kReadExecute = 1, | 101 kReadExecute = 1, |
85 }; | 102 }; |
86 void* Map(MapType type, int64_t position, int64_t length); | 103 MappedMemory* Map(MapType type, int64_t position, int64_t length); |
87 | 104 |
88 // Read/Write attempt to transfer num_bytes to/from buffer. It returns | 105 // Read/Write attempt to transfer num_bytes to/from buffer. It returns |
89 // the number of bytes read/written. | 106 // the number of bytes read/written. |
90 int64_t Read(void* buffer, int64_t num_bytes); | 107 int64_t Read(void* buffer, int64_t num_bytes); |
91 int64_t Write(const void* buffer, int64_t num_bytes); | 108 int64_t Write(const void* buffer, int64_t num_bytes); |
92 | 109 |
93 // ReadFully and WriteFully do attempt to transfer num_bytes to/from | 110 // ReadFully and WriteFully do attempt to transfer num_bytes to/from |
94 // the buffer. In the event of short accesses they will loop internally until | 111 // the buffer. In the event of short accesses they will loop internally until |
95 // the whole buffer has been transferred or an error occurs. If an error | 112 // the whole buffer has been transferred or an error occurs. If an error |
96 // occurred the result will be set to false. | 113 // occurred the result will be set to false. |
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230 Dart_WeakPersistentHandle weak_handle_; | 247 Dart_WeakPersistentHandle weak_handle_; |
231 | 248 |
232 friend class ReferenceCounted<File>; | 249 friend class ReferenceCounted<File>; |
233 DISALLOW_COPY_AND_ASSIGN(File); | 250 DISALLOW_COPY_AND_ASSIGN(File); |
234 }; | 251 }; |
235 | 252 |
236 } // namespace bin | 253 } // namespace bin |
237 } // namespace dart | 254 } // namespace dart |
238 | 255 |
239 #endif // RUNTIME_BIN_FILE_H_ | 256 #endif // RUNTIME_BIN_FILE_H_ |
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