blob: 27585dc78d3391e8c1ca50f0209110456ab6fbbe [file] [log] [blame]
// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <limits>
#include "src/flags.h"
#include "src/heap/memory-reducer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
MemoryReducer::State DoneState() {
return MemoryReducer::State(MemoryReducer::kDone, 0, 0.0, 1.0, 0);
}
MemoryReducer::State DoneState(size_t committed_memory) {
return MemoryReducer::State(MemoryReducer::kDone, 0, 0.0, 1.0,
committed_memory);
}
MemoryReducer::State WaitState(int started_gcs, double next_gc_start_ms) {
return MemoryReducer::State(MemoryReducer::kWait, started_gcs,
next_gc_start_ms, 1.0, 0);
}
MemoryReducer::State RunState(int started_gcs, double next_gc_start_ms) {
return MemoryReducer::State(MemoryReducer::kRun, started_gcs,
next_gc_start_ms, 1.0, 0);
}
MemoryReducer::Event MarkCompactEvent(double time_ms,
bool next_gc_likely_to_collect_more,
size_t committed_memory) {
MemoryReducer::Event event;
event.type = MemoryReducer::kMarkCompact;
event.time_ms = time_ms;
event.next_gc_likely_to_collect_more = next_gc_likely_to_collect_more;
event.committed_memory = committed_memory;
return event;
}
MemoryReducer::Event MarkCompactEventGarbageLeft(double time_ms,
size_t committed_memory) {
return MarkCompactEvent(time_ms, true, committed_memory);
}
MemoryReducer::Event MarkCompactEventNoGarbageLeft(double time_ms,
size_t committed_memory) {
return MarkCompactEvent(time_ms, false, committed_memory);
}
MemoryReducer::Event TimerEvent(double time_ms,
bool should_start_incremental_gc,
bool can_start_incremental_gc) {
MemoryReducer::Event event;
event.type = MemoryReducer::kTimer;
event.time_ms = time_ms;
event.should_start_incremental_gc = should_start_incremental_gc;
event.can_start_incremental_gc = can_start_incremental_gc;
return event;
}
MemoryReducer::Event TimerEventLowAllocationRate(double time_ms) {
return TimerEvent(time_ms, true, true);
}
MemoryReducer::Event TimerEventHighAllocationRate(double time_ms) {
return TimerEvent(time_ms, false, true);
}
MemoryReducer::Event TimerEventPendingGC(double time_ms) {
return TimerEvent(time_ms, true, false);
}
MemoryReducer::Event PossibleGarbageEvent(double time_ms) {
MemoryReducer::Event event;
event.type = MemoryReducer::kPossibleGarbage;
event.time_ms = time_ms;
return event;
}
TEST(MemoryReducer, FromDoneToDone) {
MemoryReducer::State state0(DoneState()), state1(DoneState());
state1 = MemoryReducer::Step(state0, TimerEventLowAllocationRate(0));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(0));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
state1 = MemoryReducer::Step(state0, TimerEventPendingGC(0));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
state1 = MemoryReducer::Step(
state0,
MarkCompactEventGarbageLeft(0, MemoryReducer::kCommittedMemoryDelta - 1));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
state0 = DoneState(1000 * MB);
state1 = MemoryReducer::Step(
state0, MarkCompactEventGarbageLeft(
0, static_cast<size_t>(
1000 * MB * MemoryReducer::kCommittedMemoryFactor) -
1));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
}
TEST(MemoryReducer, FromDoneToWait) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(DoneState()), state1(DoneState());
state1 = MemoryReducer::Step(
state0,
MarkCompactEventGarbageLeft(2, MemoryReducer::kCommittedMemoryDelta));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(MemoryReducer::kLongDelayMs + 2, state1.next_gc_start_ms);
EXPECT_EQ(0, state1.started_gcs);
EXPECT_EQ(2, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(
state0,
MarkCompactEventNoGarbageLeft(2, MemoryReducer::kCommittedMemoryDelta));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(MemoryReducer::kLongDelayMs + 2, state1.next_gc_start_ms);
EXPECT_EQ(0, state1.started_gcs);
EXPECT_EQ(2, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, PossibleGarbageEvent(0));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(MemoryReducer::kLongDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(0, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state0 = DoneState(1000 * MB);
state1 = MemoryReducer::Step(
state0, MarkCompactEventGarbageLeft(
2, static_cast<size_t>(
1000 * MB * MemoryReducer::kCommittedMemoryFactor)));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(MemoryReducer::kLongDelayMs + 2, state1.next_gc_start_ms);
EXPECT_EQ(0, state1.started_gcs);
EXPECT_EQ(2, state1.last_gc_time_ms);
}
TEST(MemoryReducer, FromWaitToWait) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(WaitState(2, 1000.0)), state1(DoneState());
state1 = MemoryReducer::Step(state0, PossibleGarbageEvent(2000));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
state1 = MemoryReducer::Step(
state0, TimerEventLowAllocationRate(state0.next_gc_start_ms - 1));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
state1 = MemoryReducer::Step(state0, TimerEventPendingGC(2000));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2000, 0));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(2000, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2000, 0));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(2000, state1.last_gc_time_ms);
state0.last_gc_time_ms = 0;
state1 = MemoryReducer::Step(
state0,
TimerEventHighAllocationRate(MemoryReducer::kWatchdogDelayMs + 1));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(MemoryReducer::kWatchdogDelayMs + 1 + MemoryReducer::kLongDelayMs,
state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state0.last_gc_time_ms = 1;
state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kLongDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
}
TEST(MemoryReducer, FromWaitToRun) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(WaitState(0, 1000.0)), state1(DoneState());
state1 = MemoryReducer::Step(
state0, TimerEventLowAllocationRate(state0.next_gc_start_ms + 1));
EXPECT_EQ(MemoryReducer::kRun, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs + 1, state1.started_gcs);
state1 = MemoryReducer::Step(
state0,
TimerEventHighAllocationRate(MemoryReducer::kWatchdogDelayMs + 2));
EXPECT_EQ(MemoryReducer::kRun, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs + 1, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
}
TEST(MemoryReducer, FromWaitToDone) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(WaitState(2, 0.0)), state1(DoneState());
state0.started_gcs = MemoryReducer::kMaxNumberOfGCs;
state1 = MemoryReducer::Step(state0, TimerEventLowAllocationRate(2000));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, TimerEventPendingGC(2000));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
}
TEST(MemoryReducer, FromRunToRun) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(RunState(1, 0.0)), state1(DoneState());
state1 = MemoryReducer::Step(state0, TimerEventLowAllocationRate(2000));
EXPECT_EQ(MemoryReducer::kRun, state1.action);
EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, TimerEventHighAllocationRate(2000));
EXPECT_EQ(MemoryReducer::kRun, state1.action);
EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, TimerEventPendingGC(2000));
EXPECT_EQ(MemoryReducer::kRun, state1.action);
EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
state1 = MemoryReducer::Step(state0, PossibleGarbageEvent(2000));
EXPECT_EQ(MemoryReducer::kRun, state1.action);
EXPECT_EQ(state0.next_gc_start_ms, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(state0.last_gc_time_ms, state1.last_gc_time_ms);
}
TEST(MemoryReducer, FromRunToDone) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(RunState(2, 0.0)), state1(DoneState());
state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2000, 0));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(MemoryReducer::kMaxNumberOfGCs, state1.started_gcs);
EXPECT_EQ(2000, state1.last_gc_time_ms);
state0.started_gcs = MemoryReducer::kMaxNumberOfGCs;
state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2000, 0));
EXPECT_EQ(MemoryReducer::kDone, state1.action);
EXPECT_EQ(0, state1.next_gc_start_ms);
EXPECT_EQ(2000, state1.last_gc_time_ms);
}
TEST(MemoryReducer, FromRunToWait) {
if (!FLAG_incremental_marking) return;
MemoryReducer::State state0(RunState(2, 0.0)), state1(DoneState());
state1 = MemoryReducer::Step(state0, MarkCompactEventGarbageLeft(2000, 0));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kShortDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(2000, state1.last_gc_time_ms);
state0.started_gcs = 1;
state1 = MemoryReducer::Step(state0, MarkCompactEventNoGarbageLeft(2000, 0));
EXPECT_EQ(MemoryReducer::kWait, state1.action);
EXPECT_EQ(2000 + MemoryReducer::kShortDelayMs, state1.next_gc_start_ms);
EXPECT_EQ(state0.started_gcs, state1.started_gcs);
EXPECT_EQ(2000, state1.last_gc_time_ms);
}
} // namespace internal
} // namespace v8