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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, 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 VM_OS_H_ | 5 #ifndef VM_OS_H_ |
6 #define VM_OS_H_ | 6 #define VM_OS_H_ |
7 | 7 |
8 #include "vm/globals.h" | 8 #include "vm/globals.h" |
9 | 9 |
10 // Forward declarations. | |
11 class tm; | |
12 | |
13 namespace dart { | 10 namespace dart { |
14 | 11 |
15 // Forward declarations. | 12 // Forward declarations. |
16 class Isolate; | 13 class Isolate; |
17 | 14 |
18 // Interface to the underlying OS platform. | 15 // Interface to the underlying OS platform. |
19 class OS { | 16 class OS { |
20 public: | 17 public: |
| 18 typedef struct BrokenDownDate { |
| 19 int year; // Offset by 1900. A value of 111 Represents the year 2011. |
| 20 int month; // [0..11] |
| 21 int day; // [1..31] |
| 22 int hours; |
| 23 int minutes; |
| 24 int seconds; |
| 25 } BrokenDownDate; |
| 26 |
21 // Takes the seconds since epoch (midnight, January 1, 1970 UTC) and breaks it | 27 // Takes the seconds since epoch (midnight, January 1, 1970 UTC) and breaks it |
22 // down into date and time in the UTC timezone. | 28 // down into date and time. |
| 29 // If 'inUtc', then the broken down date and time are in the UTC timezone, |
| 30 // otherwise the local timezone is used. |
23 // The returned year is offset by 1900. The returned month is 0-based. | 31 // The returned year is offset by 1900. The returned month is 0-based. |
24 // Returns true if the conversion succeeds, false otherwise. | 32 // Returns true if the conversion succeeds, false otherwise. |
25 static bool GmTime(int64_t seconds_since_epoch, tm* tm_result); | 33 static bool BreakDownSecondsSinceEpoch(time_t seconds_since_epoch, |
| 34 bool in_utc, |
| 35 BrokenDownDate* result); |
26 | 36 |
27 // Takes the seconds since epoch (midnight, January 1, 1970 UTC) and breaks it | 37 // Converts a broken down date into the seconds since epoch (midnight, |
28 // down into date and time in the local time. | 38 // January 1, 1970 UTC). Returns true if the conversion succeeds, false |
29 // The returned year is offset by 1900. The returned month is 0-based. | 39 // otherwise. |
30 // Returns true if the conversion succeeds, false otherwise. | 40 static bool BrokenDownToSecondsSinceEpoch( |
31 static bool LocalTime(int64_t seconds_since_epoch, tm* tm_result); | 41 const BrokenDownDate& broken_down, bool in_utc, time_t* result); |
32 | |
33 // Takes the broken down date and time in UTC timezone and computes the | |
34 // seconds since epoch (midnight, January 1, 1970 UTC). | |
35 // The given year is offset by 1900. The given month is 0-based. | |
36 // Returns true if the conversion succeeds, false otherwise. | |
37 static bool MkGmTime(tm* tm, int64_t* seconds_result); | |
38 | |
39 // Takes the broken down date and time in local timezone and computes the | |
40 // seconds since epoch (midnight, January 1, 1970 UTC). | |
41 // The given year is offset by 1900. The given month is 0-based. | |
42 // Returns true if the conversion succeeds, false otherwise. | |
43 static bool MkTime(tm* tm, int64_t* seconds_result); | |
44 | 42 |
45 // Returns the current time in milliseconds measured | 43 // Returns the current time in milliseconds measured |
46 // from midnight January 1, 1970 UTC. | 44 // from midnight January 1, 1970 UTC. |
47 static int64_t GetCurrentTimeMillis(); | 45 static int64_t GetCurrentTimeMillis(); |
48 | 46 |
49 // Returns the current time in microseconds measured | 47 // Returns the current time in microseconds measured |
50 // from midnight January 1, 1970 UTC. | 48 // from midnight January 1, 1970 UTC. |
51 static int64_t GetCurrentTimeMicros(); | 49 static int64_t GetCurrentTimeMicros(); |
52 | 50 |
53 // Returns the activation frame alignment constraint or zero if | 51 // Returns the activation frame alignment constraint or zero if |
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97 static void Shutdown(); | 95 static void Shutdown(); |
98 | 96 |
99 static void Abort(); | 97 static void Abort(); |
100 | 98 |
101 static void Exit(int code); | 99 static void Exit(int code); |
102 }; | 100 }; |
103 | 101 |
104 } // namespace dart | 102 } // namespace dart |
105 | 103 |
106 #endif // VM_OS_H_ | 104 #endif // VM_OS_H_ |
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