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// 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 "src/base/utils/random-number-generator.h"
#include "src/compiler/zone-pool.h"
#include "test/unittests/test-utils.h"
namespace v8 {
namespace internal {
namespace compiler {
class ZonePoolTest : public TestWithIsolate {
public:
ZonePoolTest() : zone_pool_(isolate()) {}
protected:
ZonePool* zone_pool() { return &zone_pool_; }
void ExpectForPool(size_t current, size_t max, size_t total) {
ASSERT_EQ(current, zone_pool()->GetCurrentAllocatedBytes());
ASSERT_EQ(max, zone_pool()->GetMaxAllocatedBytes());
ASSERT_EQ(total, zone_pool()->GetTotalAllocatedBytes());
}
void Expect(ZonePool::StatsScope* stats, size_t current, size_t max,
size_t total) {
ASSERT_EQ(current, stats->GetCurrentAllocatedBytes());
ASSERT_EQ(max, stats->GetMaxAllocatedBytes());
ASSERT_EQ(total, stats->GetTotalAllocatedBytes());
}
size_t Allocate(Zone* zone) {
size_t bytes = rng.NextInt(25) + 7;
int size_before = zone->allocation_size();
zone->New(static_cast<int>(bytes));
return static_cast<size_t>(zone->allocation_size() - size_before);
}
private:
ZonePool zone_pool_;
base::RandomNumberGenerator rng;
};
TEST_F(ZonePoolTest, Empty) {
ExpectForPool(0, 0, 0);
{
ZonePool::StatsScope stats(zone_pool());
Expect(&stats, 0, 0, 0);
}
ExpectForPool(0, 0, 0);
{
ZonePool::Scope scope(zone_pool());
scope.zone();
}
ExpectForPool(0, 0, 0);
}
TEST_F(ZonePoolTest, MultipleZonesWithDeletion) {
static const size_t kArraySize = 10;
ZonePool::Scope* scopes[kArraySize];
// Initialize.
size_t before_stats = 0;
for (size_t i = 0; i < kArraySize; ++i) {
scopes[i] = new ZonePool::Scope(zone_pool());
before_stats += Allocate(scopes[i]->zone()); // Add some stuff.
}
ExpectForPool(before_stats, before_stats, before_stats);
ZonePool::StatsScope stats(zone_pool());
size_t before_deletion = 0;
for (size_t i = 0; i < kArraySize; ++i) {
before_deletion += Allocate(scopes[i]->zone()); // Add some stuff.
}
Expect(&stats, before_deletion, before_deletion, before_deletion);
ExpectForPool(before_stats + before_deletion, before_stats + before_deletion,
before_stats + before_deletion);
// Delete the scopes and create new ones.
for (size_t i = 0; i < kArraySize; ++i) {
delete scopes[i];
scopes[i] = new ZonePool::Scope(zone_pool());
}
Expect(&stats, 0, before_deletion, before_deletion);
ExpectForPool(0, before_stats + before_deletion,
before_stats + before_deletion);
size_t after_deletion = 0;
for (size_t i = 0; i < kArraySize; ++i) {
after_deletion += Allocate(scopes[i]->zone()); // Add some stuff.
}
Expect(&stats, after_deletion, std::max(after_deletion, before_deletion),
before_deletion + after_deletion);
ExpectForPool(after_deletion,
std::max(after_deletion, before_stats + before_deletion),
before_stats + before_deletion + after_deletion);
// Cleanup.
for (size_t i = 0; i < kArraySize; ++i) {
delete scopes[i];
}
Expect(&stats, 0, std::max(after_deletion, before_deletion),
before_deletion + after_deletion);
ExpectForPool(0, std::max(after_deletion, before_stats + before_deletion),
before_stats + before_deletion + after_deletion);
}
TEST_F(ZonePoolTest, SimpleAllocationLoop) {
int runs = 20;
size_t total_allocated = 0;
size_t max_loop_allocation = 0;
ZonePool::StatsScope outer_stats(zone_pool());
{
ZonePool::Scope outer_scope(zone_pool());
size_t outer_allocated = 0;
for (int i = 0; i < runs; ++i) {
{
size_t bytes = Allocate(outer_scope.zone());
outer_allocated += bytes;
total_allocated += bytes;
}
ZonePool::StatsScope inner_stats(zone_pool());
size_t allocated = 0;
{
ZonePool::Scope inner_scope(zone_pool());
for (int j = 0; j < 20; ++j) {
size_t bytes = Allocate(inner_scope.zone());
allocated += bytes;
total_allocated += bytes;
max_loop_allocation =
std::max(max_loop_allocation, outer_allocated + allocated);
Expect(&inner_stats, allocated, allocated, allocated);
Expect(&outer_stats, outer_allocated + allocated, max_loop_allocation,
total_allocated);
ExpectForPool(outer_allocated + allocated, max_loop_allocation,
total_allocated);
}
}
Expect(&inner_stats, 0, allocated, allocated);
Expect(&outer_stats, outer_allocated, max_loop_allocation,
total_allocated);
ExpectForPool(outer_allocated, max_loop_allocation, total_allocated);
}
}
Expect(&outer_stats, 0, max_loop_allocation, total_allocated);
ExpectForPool(0, max_loop_allocation, total_allocated);
}
} // namespace compiler
} // namespace internal
} // namespace v8
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