130 lines
4.2 KiB
C++
130 lines
4.2 KiB
C++
/*
|
|
* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
#include "precompiled.hpp"
|
|
#include "gc/g1/g1CommittedRegionMap.inline.hpp"
|
|
#include "runtime/os.hpp"
|
|
#include "unittest.hpp"
|
|
|
|
class G1CommittedRegionMapSerial : public G1CommittedRegionMap {
|
|
public:
|
|
static const uint TestRegions = 512;
|
|
|
|
void verify_counts() {
|
|
verify_active_count(0, TestRegions, num_active());
|
|
verify_inactive_count(0, TestRegions, num_inactive());
|
|
}
|
|
|
|
protected:
|
|
void guarantee_mt_safety_active() const { }
|
|
void guarantee_mt_safety_inactive() const { }
|
|
};
|
|
|
|
static bool mutate() {
|
|
return os::random() % 2 == 0;
|
|
}
|
|
|
|
static void generate_random_map(G1CommittedRegionMap* map) {
|
|
for (uint i = 0; i < G1CommittedRegionMapSerial::TestRegions; i++) {
|
|
if (mutate()) {
|
|
map->activate(i, i+1);
|
|
}
|
|
}
|
|
|
|
if (map->num_active() == 0) {
|
|
// If we randomly activated 0 regions, activate the first half
|
|
// to have some regions to test.
|
|
map->activate(0, G1CommittedRegionMapSerial::TestRegions / 2);
|
|
}
|
|
}
|
|
|
|
static void random_deactivate(G1CommittedRegionMap* map) {
|
|
uint current_offset = 0;
|
|
do {
|
|
G1HeapRegionRange current = map->next_active_range(current_offset);
|
|
if (mutate()) {
|
|
if (current.length() < 5) {
|
|
// For short ranges, deactivate whole.
|
|
map->deactivate(current.start(), current.end());
|
|
} else {
|
|
// For larger ranges, deactivate half.
|
|
map->deactivate(current.start(), current.end() - (current.length() / 2));
|
|
}
|
|
}
|
|
current_offset = current.end();
|
|
} while (current_offset != G1CommittedRegionMapSerial::TestRegions);
|
|
}
|
|
|
|
static void random_uncommit_or_reactive(G1CommittedRegionMap* map) {
|
|
uint current_offset = 0;
|
|
do {
|
|
G1HeapRegionRange current = map->next_inactive_range(current_offset);
|
|
// Randomly either reactivate or uncommit
|
|
if (mutate()) {
|
|
map->reactivate(current.start(), current.end());
|
|
} else {
|
|
map->uncommit(current.start(), current.end());
|
|
}
|
|
|
|
current_offset = current.end();
|
|
} while (current_offset != G1CommittedRegionMapSerial::TestRegions);
|
|
}
|
|
|
|
static void random_activate_free(G1CommittedRegionMap* map) {
|
|
uint current_offset = 0;
|
|
do {
|
|
G1HeapRegionRange current = map->next_committable_range(current_offset);
|
|
// Randomly either reactivate or uncommit
|
|
if (mutate()) {
|
|
if (current.length() < 5) {
|
|
// For short ranges, deactivate whole.
|
|
map->activate(current.start(), current.end());
|
|
} else {
|
|
// For larger ranges, deactivate half.
|
|
map->activate(current.start(), current.end() - (current.length() / 2));
|
|
}
|
|
}
|
|
|
|
current_offset = current.end();
|
|
} while (current_offset != G1CommittedRegionMapSerial::TestRegions);
|
|
}
|
|
|
|
TEST(G1CommittedRegionMapTest, serial) {
|
|
G1CommittedRegionMapSerial serial_map;
|
|
serial_map.initialize(G1CommittedRegionMapSerial::TestRegions);
|
|
|
|
// Activate some regions
|
|
generate_random_map(&serial_map);
|
|
|
|
// Work through the map and mutate it
|
|
for (int i = 0; i < 500; i++) {
|
|
random_deactivate(&serial_map);
|
|
serial_map.verify_counts();
|
|
random_uncommit_or_reactive(&serial_map);
|
|
serial_map.verify_counts();
|
|
random_activate_free(&serial_map);
|
|
serial_map.verify_counts();
|
|
ASSERT_EQ(serial_map.num_inactive(), 0u);
|
|
}
|
|
} |