Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include <limits> |
| 6 | |
| 7 | #include "src/flags.h" |
| 8 | #include "src/heap/memory-reducer.h" |
| 9 | #include "testing/gtest/include/gtest/gtest.h" |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | |
| 14 | MemoryReducer::State DoneState() { |
| 15 | return MemoryReducer::State(MemoryReducer::kDone, 0, 0.0, 1.0); |
| 16 | } |
| 17 | |
| 18 | |
| 19 | MemoryReducer::State WaitState(int started_gcs, double next_gc_start_ms) { |
| 20 | return MemoryReducer::State(MemoryReducer::kWait, started_gcs, |
| 21 | next_gc_start_ms, 1.0); |
| 22 | } |
| 23 | |
| 24 | |
| 25 | MemoryReducer::State RunState(int started_gcs, double next_gc_start_ms) { |
| 26 | return MemoryReducer::State(MemoryReducer::kRun, started_gcs, |
| 27 | next_gc_start_ms, 1.0); |
| 28 | } |
| 29 | |
| 30 | |
| 31 | MemoryReducer::Event MarkCompactEvent(double time_ms, |
| 32 | bool next_gc_likely_to_collect_more) { |
| 33 | MemoryReducer::Event event; |
| 34 | event.type = MemoryReducer::kMarkCompact; |
| 35 | event.time_ms = time_ms; |
| 36 | event.next_gc_likely_to_collect_more = next_gc_likely_to_collect_more; |
| 37 | return event; |
| 38 | } |
| 39 | |
| 40 | |
| 41 | MemoryReducer::Event MarkCompactEventGarbageLeft(double time_ms) { |
| 42 | return MarkCompactEvent(time_ms, true); |
| 43 | } |
| 44 | |
| 45 | |
| 46 | MemoryReducer::Event MarkCompactEventNoGarbageLeft(double time_ms) { |
| 47 | return MarkCompactEvent(time_ms, false); |
| 48 | } |
| 49 | |
| 50 | |
| 51 | MemoryReducer::Event TimerEvent(double time_ms, |
| 52 | bool should_start_incremental_gc, |
| 53 | bool can_start_incremental_gc) { |
| 54 | MemoryReducer::Event event; |
| 55 | event.type = MemoryReducer::kTimer; |
| 56 | event.time_ms = time_ms; |
| 57 | event.should_start_incremental_gc = should_start_incremental_gc; |
| 58 | event.can_start_incremental_gc = can_start_incremental_gc; |
| 59 | return event; |
| 60 | } |
| 61 | |
| 62 | |
| 63 | MemoryReducer::Event TimerEventLowAllocationRate(double time_ms) { |
| 64 | return TimerEvent(time_ms, true, true); |
| 65 | } |
| 66 | |
| 67 | |
| 68 | MemoryReducer::Event TimerEventHighAllocationRate(double time_ms) { |
| 69 | return TimerEvent(time_ms, false, true); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | MemoryReducer::Event TimerEventPendingGC(double time_ms) { |
| 74 | return TimerEvent(time_ms, true, false); |
| 75 | } |
| 76 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 77 | MemoryReducer::Event PossibleGarbageEvent(double time_ms) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 78 | MemoryReducer::Event event; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 79 | event.type = MemoryReducer::kPossibleGarbage; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | event.time_ms = time_ms; |
| 81 | return event; |
| 82 | } |
| 83 | |
| 84 | |
| 85 | TEST(MemoryReducer, FromDoneToDone) { |
| 86 | MemoryReducer::State state0(DoneState()), state1(DoneState()); |
| 87 | |
| 88 | state1 = MemoryReducer::Step(state0, TimerEventLowAllocationRate(0)); |
| 89 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 90 | |
| 91 | state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(0)); |
| 92 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 93 | |
| 94 | state1 = MemoryReducer::Step(state0, TimerEventPendingGC(0)); |
| 95 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 96 | } |
| 97 | |
| 98 | |
| 99 | TEST(MemoryReducer, FromDoneToWait) { |
| 100 | if (!FLAG_incremental_marking) return; |
| 101 | |
| 102 | MemoryReducer::State state0(DoneState()), state1(DoneState()); |
| 103 | |
| 104 | state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2)); |
| 105 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 106 | EXPECT_EQ(MemoryReducer::kLongDelayMs + 2, state1.next_gc_start_ms); |
| 107 | EXPECT_EQ(0, state1.started_gcs); |
| 108 | EXPECT_EQ(2, state1.last_gc_time_ms); |
| 109 | |
| 110 | state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2)); |
| 111 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 112 | EXPECT_EQ(MemoryReducer::kLongDelayMs + 2, state1.next_gc_start_ms); |
| 113 | EXPECT_EQ(0, state1.started_gcs); |
| 114 | EXPECT_EQ(2, state1.last_gc_time_ms); |
| 115 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 116 | state1 = MemoryReducer::Step(state0, PossibleGarbageEvent(0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 117 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 118 | EXPECT_EQ(MemoryReducer::kLongDelayMs, state1.next_gc_start_ms); |
| 119 | EXPECT_EQ(0, state1.started_gcs); |
| 120 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 121 | } |
| 122 | |
| 123 | |
| 124 | TEST(MemoryReducer, FromWaitToWait) { |
| 125 | if (!FLAG_incremental_marking) return; |
| 126 | |
| 127 | MemoryReducer::State state0(WaitState(2, 1000.0)), state1(DoneState()); |
| 128 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 129 | state1 = MemoryReducer::Step(state0, PossibleGarbageEvent(2000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 130 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 131 | EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms); |
| 132 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 133 | |
| 134 | state1 = MemoryReducer::Step( |
| 135 | state0, TimerEventLowAllocationRate(state0.next_gc_start_ms - 1)); |
| 136 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 137 | EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms); |
| 138 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 139 | |
| 140 | state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000)); |
| 141 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 142 | EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms); |
| 143 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 144 | |
| 145 | state1 = MemoryReducer::Step(state0, TimerEventPendingGC(2000)); |
| 146 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 147 | EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms); |
| 148 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 149 | |
| 150 | state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2000)); |
| 151 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 152 | EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms); |
| 153 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 154 | EXPECT_EQ(2000, state1.last_gc_time_ms); |
| 155 | |
| 156 | state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2000)); |
| 157 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 158 | EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms); |
| 159 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 160 | EXPECT_EQ(2000, state1.last_gc_time_ms); |
| 161 | |
| 162 | state0.last_gc_time_ms = 0; |
| 163 | state1 = MemoryReducer::Step( |
| 164 | state0, |
| 165 | TimerEventHighAllocationRate(MemoryReducer::kWatchdogDelayMs + 1)); |
| 166 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 167 | EXPECT_EQ(MemoryReducer::kWatchdogDelayMs + 1 + MemoryReducer::kLongDelayMs, |
| 168 | state1.next_gc_start_ms); |
| 169 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 170 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 171 | |
| 172 | state0.last_gc_time_ms = 1; |
| 173 | state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000)); |
| 174 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 175 | EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms); |
| 176 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 177 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 178 | } |
| 179 | |
| 180 | |
| 181 | TEST(MemoryReducer, FromWaitToRun) { |
| 182 | if (!FLAG_incremental_marking) return; |
| 183 | |
| 184 | MemoryReducer::State state0(WaitState(0, 1000.0)), state1(DoneState()); |
| 185 | |
| 186 | state1 = MemoryReducer::Step( |
| 187 | state0, TimerEventLowAllocationRate(state0.next_gc_start_ms + 1)); |
| 188 | EXPECT_EQ(MemoryReducer::kRun, state1.action); |
| 189 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 190 | EXPECT_EQ(state0.started_gcs + 1, state1.started_gcs); |
| 191 | |
| 192 | state1 = MemoryReducer::Step( |
| 193 | state0, |
| 194 | TimerEventHighAllocationRate(MemoryReducer::kWatchdogDelayMs + 2)); |
| 195 | EXPECT_EQ(MemoryReducer::kRun, state1.action); |
| 196 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 197 | EXPECT_EQ(state0.started_gcs + 1, state1.started_gcs); |
| 198 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 199 | } |
| 200 | |
| 201 | |
| 202 | TEST(MemoryReducer, FromWaitToDone) { |
| 203 | if (!FLAG_incremental_marking) return; |
| 204 | |
| 205 | MemoryReducer::State state0(WaitState(2, 0.0)), state1(DoneState()); |
| 206 | |
| 207 | state0.started_gcs = MemoryReducer::kMaxNumberOfGCs; |
| 208 | |
| 209 | state1 = MemoryReducer::Step(state0, TimerEventLowAllocationRate(2000)); |
| 210 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 211 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 212 | EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs); |
| 213 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 214 | |
| 215 | state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000)); |
| 216 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 217 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 218 | EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs); |
| 219 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 220 | |
| 221 | state1 = MemoryReducer::Step(state0, TimerEventPendingGC(2000)); |
| 222 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 223 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 224 | EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs); |
| 225 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | TEST(MemoryReducer, FromRunToRun) { |
| 230 | if (!FLAG_incremental_marking) return; |
| 231 | |
| 232 | MemoryReducer::State state0(RunState(1, 0.0)), state1(DoneState()); |
| 233 | |
| 234 | state1 = MemoryReducer::Step(state0, TimerEventLowAllocationRate(2000)); |
| 235 | EXPECT_EQ(MemoryReducer::kRun, state1.action); |
| 236 | EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms); |
| 237 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 238 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 239 | |
| 240 | state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000)); |
| 241 | EXPECT_EQ(MemoryReducer::kRun, state1.action); |
| 242 | EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms); |
| 243 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 244 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 245 | |
| 246 | state1 = MemoryReducer::Step(state0, TimerEventPendingGC(2000)); |
| 247 | EXPECT_EQ(MemoryReducer::kRun, state1.action); |
| 248 | EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms); |
| 249 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 250 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 251 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 252 | state1 = MemoryReducer::Step(state0, PossibleGarbageEvent(2000)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 253 | EXPECT_EQ(MemoryReducer::kRun, state1.action); |
| 254 | EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms); |
| 255 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 256 | EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms); |
| 257 | } |
| 258 | |
| 259 | |
| 260 | TEST(MemoryReducer, FromRunToDone) { |
| 261 | if (!FLAG_incremental_marking) return; |
| 262 | |
| 263 | MemoryReducer::State state0(RunState(2, 0.0)), state1(DoneState()); |
| 264 | |
| 265 | state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2000)); |
| 266 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 267 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 268 | EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs); |
| 269 | EXPECT_EQ(2000, state1.last_gc_time_ms); |
| 270 | |
| 271 | state0.started_gcs = MemoryReducer::kMaxNumberOfGCs; |
| 272 | |
| 273 | state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2000)); |
| 274 | EXPECT_EQ(MemoryReducer::kDone, state1.action); |
| 275 | EXPECT_EQ(0, state1.next_gc_start_ms); |
| 276 | EXPECT_EQ(2000, state1.last_gc_time_ms); |
| 277 | } |
| 278 | |
| 279 | |
| 280 | TEST(MemoryReducer, FromRunToWait) { |
| 281 | if (!FLAG_incremental_marking) return; |
| 282 | |
| 283 | MemoryReducer::State state0(RunState(2, 0.0)), state1(DoneState()); |
| 284 | |
| 285 | state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2000)); |
| 286 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 287 | EXPECT_EQ(2000 + MemoryReducer::kShortDelayMs, state1.next_gc_start_ms); |
| 288 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 289 | EXPECT_EQ(2000, state1.last_gc_time_ms); |
| 290 | |
| 291 | state0.started_gcs = 1; |
| 292 | |
| 293 | state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2000)); |
| 294 | EXPECT_EQ(MemoryReducer::kWait, state1.action); |
| 295 | EXPECT_EQ(2000 + MemoryReducer::kShortDelayMs, state1.next_gc_start_ms); |
| 296 | EXPECT_EQ(state0.started_gcs, state1.started_gcs); |
| 297 | EXPECT_EQ(2000, state1.last_gc_time_ms); |
| 298 | } |
| 299 | |
| 300 | } // namespace internal |
| 301 | } // namespace v8 |