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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) 2019 The LevelDB Authors. All rights reserved. | ||
| // Use of this source code is governed by a BSD-style license that can be | ||
| // found in the LICENSE file. See the AUTHORS file for names of contributors. | ||
| #include <iostream> | ||
| #include <map> | ||
| #include <memory> | ||
| #include <sstream> | ||
| #include <string> | ||
| #include <vector> | ||
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| #include <math.h> | ||
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| #include "leveldb/db.h" | ||
| #include "leveldb/write_batch.h" | ||
| #include "util/testharness.h" | ||
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| using namespace std; | ||
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| namespace leveldb { | ||
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| namespace { | ||
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| unsigned int random(unsigned int max) { | ||
| return std::rand() % max; | ||
| } | ||
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| string newString(int32_t index) { | ||
| const unsigned int len = 1024; | ||
| char bytes[len]; | ||
| unsigned int i = 0; | ||
| while (i < 8) { | ||
| bytes[i] = 'a' + ((index >> (4 * i)) & 0xf); | ||
| ++i; | ||
| } | ||
| while (i < sizeof(bytes)) { | ||
| bytes[i] = 'a' + random(26); | ||
| ++i; | ||
| } | ||
| return string(bytes, sizeof(bytes)); | ||
| } | ||
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| } // namespace | ||
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| class Issue320 { }; | ||
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| TEST(Issue320, Test) { | ||
| std::srand(0); | ||
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| bool delete_before_put = false; | ||
| bool keep_snapshots = true; | ||
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| vector<pair<string, string>*> test_map(10000, nullptr); | ||
| vector<Snapshot const*> snapshots(100, nullptr); | ||
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| DB* db; | ||
| Options options; | ||
| options.create_if_missing = true; | ||
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| std::string dbpath = test::TmpDir() + "/leveldb_issue320_test"; | ||
| ASSERT_OK(DB::Open(options, dbpath, &db)); | ||
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| unsigned int target_size = 10000; | ||
| unsigned int num_items = 0; | ||
| unsigned long count = 0; | ||
| string key; | ||
| string value, old_value; | ||
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| WriteOptions writeOptions; | ||
| ReadOptions readOptions; | ||
| while (count < 200000) { | ||
| if ((++count % 1000) == 0) { | ||
| cout << "count: " << count << endl; | ||
| } | ||
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| unsigned int index = random(test_map.size()); | ||
| WriteBatch batch; | ||
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| if (test_map[index] == nullptr) { | ||
| num_items++; | ||
| test_map[index] = | ||
| new pair<string, string>(newString(index), newString(index)); | ||
| batch.Put(test_map[index]->first, test_map[index]->second); | ||
| } else { | ||
| ASSERT_OK(db->Get(readOptions, test_map[index]->first, &old_value)); | ||
| if (old_value != test_map[index]->second) { | ||
| cout << "ERROR incorrect value returned by Get" << endl; | ||
| cout << " count=" << count << endl; | ||
| cout << " old value=" << old_value << endl; | ||
| cout << " test_map[index]->second=" << test_map[index]->second << endl; | ||
| cout << " test_map[index]->first=" << test_map[index]->first << endl; | ||
| cout << " index=" << index << endl; | ||
| ASSERT_EQ(old_value, test_map[index]->second); | ||
| } | ||
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| if (num_items >= target_size && random(100) > 30) { | ||
| batch.Delete(test_map[index]->first); | ||
| delete test_map[index]; | ||
| test_map[index] = nullptr; | ||
| --num_items; | ||
| } else { | ||
| test_map[index]->second = newString(index); | ||
| if (delete_before_put) batch.Delete(test_map[index]->first); | ||
| batch.Put(test_map[index]->first, test_map[index]->second); | ||
| } | ||
| } | ||
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| ASSERT_OK(db->Write(writeOptions, &batch)); | ||
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| if (keep_snapshots && random(10) == 0) { | ||
| unsigned int i = random(snapshots.size()); | ||
| if (snapshots[i] != nullptr) { | ||
| db->ReleaseSnapshot(snapshots[i]); | ||
| } | ||
| snapshots[i] = db->GetSnapshot(); | ||
| } | ||
| } | ||
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| for (Snapshot const* snapshot : snapshots) { | ||
| if (snapshot) { | ||
| db->ReleaseSnapshot(snapshot); | ||
| } | ||
| } | ||
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| for (size_t i = 0; i < test_map.size(); ++i) { | ||
| if (test_map[i] != nullptr) { | ||
| delete test_map[i]; | ||
| test_map[i] = nullptr; | ||
| } | ||
| } | ||
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| delete db; | ||
| DestroyDB(dbpath, options); | ||
| } | ||
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| } // namespace leveldb | ||
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| int main(int argc, char** argv) { | ||
| return leveldb::test::RunAllTests(); | ||
| } |