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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, 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_LOG_H_ | 5 #ifndef VM_LOG_H_ |
6 #define VM_LOG_H_ | 6 #define VM_LOG_H_ |
7 | 7 |
8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
9 #include "vm/growable_array.h" | 9 #include "vm/growable_array.h" |
10 #include "vm/os.h" | 10 #include "vm/os.h" |
11 | 11 |
12 namespace dart { | 12 namespace dart { |
13 | 13 |
14 class Isolate; | |
15 class LogBlock; | 14 class LogBlock; |
16 class Thread; | 15 class Thread; |
17 | 16 |
18 #if defined(_MSC_VER) | 17 #if defined(_MSC_VER) |
19 #define ISL_Print(format, ...) \ | 18 #define THR_Print(format, ...) \ |
20 Isolate::Current()->Log()->Print(format, __VA_ARGS__) | 19 Thread::Current()->Log()->Print(format, __VA_ARGS__) |
21 #else | 20 #else |
22 #define ISL_Print(format, ...) \ | 21 #define THR_Print(format, ...) \ |
23 Isolate::Current()->Log()->Print(format, ##__VA_ARGS__) | 22 Thread::Current()->Log()->Print(format, ##__VA_ARGS__) |
24 #endif | 23 #endif |
25 | 24 |
26 #define ISL_VPrint(format, args) \ | 25 #define THR_VPrint(format, args) \ |
27 Isolate::Current()->Log()->VPrint(format, args) | 26 Thread::Current()->Log()->VPrint(format, args) |
28 | 27 |
29 typedef void (*LogPrinter)(const char* str, ...); | 28 typedef void (*LogPrinter)(const char* str, ...); |
30 | 29 |
31 class Log { | 30 class Log { |
32 public: | 31 public: |
33 explicit Log(LogPrinter printer = OS::Print); | 32 explicit Log(LogPrinter printer = OS::Print); |
| 33 ~Log(); |
34 | 34 |
35 // Append a formatted string to the log. | 35 // Append a formatted string to the log. |
36 void Print(const char* format, ...) PRINTF_ATTRIBUTE(2, 3); | 36 void Print(const char* format, ...) PRINTF_ATTRIBUTE(2, 3); |
37 | 37 |
38 void VPrint(const char* format, va_list args); | 38 void VPrint(const char* format, va_list args); |
39 | 39 |
40 // Flush and truncate the log. The log is flushed starting at cursor | 40 // Flush and truncate the log. The log is flushed starting at cursor |
41 // and truncated to cursor afterwards. | 41 // and truncated to cursor afterwards. |
42 void Flush(const intptr_t cursor = 0); | 42 void Flush(const intptr_t cursor = 0); |
43 | 43 |
44 // Clears the log. | 44 // Clears the log. |
45 void Clear(); | 45 void Clear(); |
46 | 46 |
47 // Current cursor. | 47 // Current cursor. |
48 intptr_t cursor() const; | 48 intptr_t cursor() const; |
49 | 49 |
| 50 // Returns false if we should drop log messages related to 'isolate'. |
| 51 static bool ShouldLogForIsolate(const Isolate* isolate); |
| 52 |
50 // A logger that does nothing. | 53 // A logger that does nothing. |
51 static Log* NoOpLog(); | 54 static Log* NoOpLog(); |
52 | 55 |
53 private: | 56 private: |
54 void TerminateString(); | 57 void TerminateString(); |
55 void EnableManualFlush(); | 58 void EnableManualFlush(); |
56 void DisableManualFlush(); | 59 void DisableManualFlush(); |
57 | 60 |
58 static Log noop_log_; | 61 static Log noop_log_; |
59 LogPrinter printer_; | 62 LogPrinter printer_; |
60 intptr_t manual_flush_; | 63 intptr_t manual_flush_; |
61 MallocGrowableArray<char> buffer_; | 64 MallocGrowableArray<char> buffer_; |
62 | 65 |
63 friend class LogBlock; | 66 friend class LogBlock; |
64 friend class LogTestHelper; | 67 friend class LogTestHelper; |
65 DISALLOW_COPY_AND_ASSIGN(Log); | 68 DISALLOW_COPY_AND_ASSIGN(Log); |
66 }; | 69 }; |
67 | 70 |
68 | 71 |
69 // Causes all log messages to be buffered until destructor is called. | 72 // Causes all log messages to be buffered until destructor is called. |
70 // Can be nested. | 73 // Can be nested. |
71 class LogBlock : public StackResource { | 74 class LogBlock : public StackResource { |
72 public: | 75 public: |
73 LogBlock(Isolate* isolate, Log* log) | 76 LogBlock(Thread* thread, Log* log) : StackResource(thread) { |
74 : StackResource(isolate), | 77 Initialize(log); |
75 log_(log), cursor_(log->cursor()) { | |
76 CommonConstructor(); | |
77 } | 78 } |
78 | 79 |
79 explicit LogBlock(Isolate* isolate); | 80 explicit LogBlock(Thread* thread) : StackResource(thread) { |
80 explicit LogBlock(Thread* thread); | 81 Initialize(thread->Log()); |
81 | |
82 LogBlock(Thread* thread, Log* log); | |
83 | |
84 ~LogBlock() { | |
85 CommonDestructor(); | |
86 } | 82 } |
87 | 83 |
| 84 ~LogBlock(); |
| 85 |
88 private: | 86 private: |
89 void CommonConstructor() { | 87 void Initialize(Log* log); |
90 log_->EnableManualFlush(); | |
91 } | |
92 | 88 |
93 void CommonDestructor() { | |
94 log_->Flush(cursor_); | |
95 log_->DisableManualFlush(); | |
96 } | |
97 Log* log_; | 89 Log* log_; |
98 const intptr_t cursor_; | 90 intptr_t cursor_; |
99 }; | 91 }; |
100 | 92 |
101 } // namespace dart | 93 } // namespace dart |
102 | 94 |
103 #endif // VM_LOG_H_ | 95 #endif // VM_LOG_H_ |
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