71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
// Copyright (C) 2017 Red Hat, Inc. All rights reserved.
|
|
//
|
|
// This file is part of the thin-provisioning-tools source.
|
|
//
|
|
// thin-provisioning-tools is free software: you can redistribute it
|
|
// and/or modify it under the terms of the GNU General Public License
|
|
// as published by the Free Software Foundation, either version 3 of
|
|
// the License, or (at your option) any later version.
|
|
//
|
|
// thin-provisioning-tools 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 for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License along
|
|
// with thin-provisioning-tools. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
#include "gmock/gmock.h"
|
|
#include "block-cache/block_cache.h"
|
|
#include "test_utils.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
using namespace std;
|
|
using namespace test;
|
|
using namespace testing;
|
|
|
|
//----------------------------------------------------------------
|
|
|
|
TEST(BCacheTests, cleaned_on_demand)
|
|
{
|
|
using namespace bcache;
|
|
|
|
unsigned const NR_BLOCKS = 16;
|
|
|
|
temp_file tmp("bcache_t", 1);
|
|
int fd = open(tmp.get_path().c_str(), O_RDWR | O_DIRECT, 0666);
|
|
|
|
uint64_t bs = 8;
|
|
block_cache bc(fd, bs, 64, (bs << SECTOR_SHIFT) * NR_BLOCKS);
|
|
validator::ptr v(new bcache::noop_validator());
|
|
for (unsigned i = 0; i < NR_BLOCKS; i++) {
|
|
block_cache::block &b = bc.get(i, block_cache::GF_DIRTY | block_cache::GF_ZERO, v);
|
|
b.put();
|
|
}
|
|
|
|
// Default WRITEBACK_LOW_THRESHOLD_PERCENT == 33
|
|
// For NR_BLOCKS cache entires, only 6 dirty blocks will be submitted,
|
|
// so the 7th get() doesn't work.
|
|
list<block_cache::block *> blocks;
|
|
|
|
try {
|
|
for (unsigned i = 0; i < NR_BLOCKS; i++)
|
|
blocks.push_back(&bc.get(NR_BLOCKS + i, 0, v));
|
|
|
|
} catch (...) {
|
|
for (auto b : blocks)
|
|
b->put();
|
|
|
|
throw;
|
|
}
|
|
|
|
for (auto b : blocks)
|
|
b->put();
|
|
}
|
|
|