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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_HEAP_GC_IDLE_TIME_HANDLER_H_ | 5 #ifndef V8_HEAP_GC_IDLE_TIME_HANDLER_H_ |
6 #define V8_HEAP_GC_IDLE_TIME_HANDLER_H_ | 6 #define V8_HEAP_GC_IDLE_TIME_HANDLER_H_ |
7 | 7 |
8 #include "src/globals.h" | 8 #include "src/globals.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
11 namespace internal { | 11 namespace internal { |
12 | 12 |
13 enum GCIdleTimeActionType { | 13 enum GCIdleTimeActionType { |
14 DONE, | 14 DONE, |
15 DO_NOTHING, | 15 DO_NOTHING, |
16 DO_INCREMENTAL_MARKING, | 16 DO_INCREMENTAL_MARKING, |
17 DO_SCAVENGE, | 17 DO_SCAVENGE, |
18 DO_FULL_GC, | 18 DO_FULL_GC, |
19 DO_FINALIZE_SWEEPING | 19 DO_FINALIZE_SWEEPING |
20 }; | 20 }; |
21 | 21 |
22 | 22 |
23 class GCIdleTimeAction { | 23 class GCIdleTimeAction { |
24 public: | 24 public: |
25 static GCIdleTimeAction Done() { | 25 static GCIdleTimeAction Done() { |
26 GCIdleTimeAction result; | 26 GCIdleTimeAction result; |
27 result.type = DONE; | 27 result.type = DONE; |
28 result.parameter = 0; | 28 result.parameter = 0; |
| 29 result.additional_work = false; |
29 return result; | 30 return result; |
30 } | 31 } |
31 | 32 |
32 static GCIdleTimeAction Nothing() { | 33 static GCIdleTimeAction Nothing() { |
33 GCIdleTimeAction result; | 34 GCIdleTimeAction result; |
34 result.type = DO_NOTHING; | 35 result.type = DO_NOTHING; |
35 result.parameter = 0; | 36 result.parameter = 0; |
| 37 result.additional_work = false; |
36 return result; | 38 return result; |
37 } | 39 } |
38 | 40 |
39 static GCIdleTimeAction IncrementalMarking(intptr_t step_size) { | 41 static GCIdleTimeAction IncrementalMarking(intptr_t step_size) { |
40 GCIdleTimeAction result; | 42 GCIdleTimeAction result; |
41 result.type = DO_INCREMENTAL_MARKING; | 43 result.type = DO_INCREMENTAL_MARKING; |
42 result.parameter = step_size; | 44 result.parameter = step_size; |
| 45 result.additional_work = false; |
43 return result; | 46 return result; |
44 } | 47 } |
45 | 48 |
46 static GCIdleTimeAction Scavenge() { | 49 static GCIdleTimeAction Scavenge() { |
47 GCIdleTimeAction result; | 50 GCIdleTimeAction result; |
48 result.type = DO_SCAVENGE; | 51 result.type = DO_SCAVENGE; |
49 result.parameter = 0; | 52 result.parameter = 0; |
| 53 result.additional_work = false; |
50 return result; | 54 return result; |
51 } | 55 } |
52 | 56 |
53 static GCIdleTimeAction FullGC() { | 57 static GCIdleTimeAction FullGC() { |
54 GCIdleTimeAction result; | 58 GCIdleTimeAction result; |
55 result.type = DO_FULL_GC; | 59 result.type = DO_FULL_GC; |
56 result.parameter = 0; | 60 result.parameter = 0; |
| 61 result.additional_work = false; |
57 return result; | 62 return result; |
58 } | 63 } |
59 | 64 |
60 static GCIdleTimeAction FinalizeSweeping() { | 65 static GCIdleTimeAction FinalizeSweeping() { |
61 GCIdleTimeAction result; | 66 GCIdleTimeAction result; |
62 result.type = DO_FINALIZE_SWEEPING; | 67 result.type = DO_FINALIZE_SWEEPING; |
63 result.parameter = 0; | 68 result.parameter = 0; |
| 69 result.additional_work = false; |
64 return result; | 70 return result; |
65 } | 71 } |
66 | 72 |
67 void Print(); | 73 void Print(); |
68 | 74 |
69 GCIdleTimeActionType type; | 75 GCIdleTimeActionType type; |
70 intptr_t parameter; | 76 intptr_t parameter; |
| 77 bool additional_work; |
71 }; | 78 }; |
72 | 79 |
73 | 80 |
74 class GCTracer; | 81 class GCTracer; |
75 | 82 |
76 // The idle time handler makes decisions about which garbage collection | 83 // The idle time handler makes decisions about which garbage collection |
77 // operations are executing during IdleNotification. | 84 // operations are executing during IdleNotification. |
78 class GCIdleTimeHandler { | 85 class GCIdleTimeHandler { |
79 public: | 86 public: |
80 // If we haven't recorded any incremental marking events yet, we carefully | 87 // If we haven't recorded any incremental marking events yet, we carefully |
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203 int mark_compacts_since_idle_round_started_; | 210 int mark_compacts_since_idle_round_started_; |
204 int scavenges_since_last_idle_round_; | 211 int scavenges_since_last_idle_round_; |
205 | 212 |
206 DISALLOW_COPY_AND_ASSIGN(GCIdleTimeHandler); | 213 DISALLOW_COPY_AND_ASSIGN(GCIdleTimeHandler); |
207 }; | 214 }; |
208 | 215 |
209 } // namespace internal | 216 } // namespace internal |
210 } // namespace v8 | 217 } // namespace v8 |
211 | 218 |
212 #endif // V8_HEAP_GC_IDLE_TIME_HANDLER_H_ | 219 #endif // V8_HEAP_GC_IDLE_TIME_HANDLER_H_ |
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