github.com/zuoyebang/bitalosdb@v1.1.1-0.20240516111551-79a8c4d8ce20/bitree/bdb/unix_test.go (about)

     1  //go:build !windows
     2  // +build !windows
     3  
     4  // Copyright 2021 The Bitalosdb author(hustxrb@163.com) and other contributors.
     5  //
     6  // Licensed under the Apache License, Version 2.0 (the "License");
     7  // you may not use this file except in compliance with the License.
     8  // You may obtain a copy of the License at
     9  //
    10  //     http://www.apache.org/licenses/LICENSE-2.0
    11  //
    12  // Unless required by applicable law or agreed to in writing, software
    13  // distributed under the License is distributed on an "AS IS" BASIS,
    14  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15  // See the License for the specific language governing permissions and
    16  // limitations under the License.
    17  
    18  package bdb_test
    19  
    20  import (
    21  	"fmt"
    22  	"testing"
    23  
    24  	"github.com/zuoyebang/bitalosdb/bitree/bdb"
    25  	"github.com/zuoyebang/bitalosdb/internal/options"
    26  
    27  	"golang.org/x/sys/unix"
    28  )
    29  
    30  func TestMlock_DbOpen(t *testing.T) {
    31  	skipOnMemlockLimitBelow(t, 32*1024)
    32  
    33  	db := MustOpenWithOption(&options.BdbOptions{Mlock: true})
    34  	defer db.MustClose()
    35  }
    36  
    37  func TestMlock_DbCanGrow_Small(t *testing.T) {
    38  	skipOnMemlockLimitBelow(t, 32*1024)
    39  
    40  	db := MustOpenWithOption(&options.BdbOptions{Mlock: true})
    41  	defer db.MustClose()
    42  
    43  	if err := db.Update(func(tx *bdb.Tx) error {
    44  		b, err := tx.CreateBucketIfNotExists([]byte("bucket"))
    45  		if err != nil {
    46  			t.Fatal(err)
    47  		}
    48  
    49  		key := []byte("key")
    50  		value := []byte("value")
    51  		if err := b.Put(key, value); err != nil {
    52  			t.Fatal(err)
    53  		}
    54  
    55  		return nil
    56  	}); err != nil {
    57  		t.Fatal(err)
    58  	}
    59  
    60  }
    61  
    62  func TestMlock_DbCanGrow_Big(t *testing.T) {
    63  	if testing.Short() {
    64  		t.Skip("skipping test in short mode")
    65  	}
    66  
    67  	skipOnMemlockLimitBelow(t, 32*1024*1024)
    68  
    69  	chunksBefore := 64
    70  	chunksAfter := 64
    71  
    72  	db := MustOpenWithOption(&options.BdbOptions{Mlock: true})
    73  	defer db.MustClose()
    74  
    75  	for chunk := 0; chunk < chunksBefore; chunk++ {
    76  		insertChunk(t, db, chunk)
    77  	}
    78  	dbSize := fileSize(db.f)
    79  
    80  	for chunk := 0; chunk < chunksAfter; chunk++ {
    81  		insertChunk(t, db, chunksBefore+chunk)
    82  	}
    83  	newDbSize := fileSize(db.f)
    84  
    85  	if newDbSize <= dbSize {
    86  		t.Errorf("db didn't grow: %v <= %v", newDbSize, dbSize)
    87  	}
    88  }
    89  
    90  func insertChunk(t *testing.T, db *DB, chunkId int) {
    91  	chunkSize := 1024
    92  
    93  	if err := db.Update(func(tx *bdb.Tx) error {
    94  		b, err := tx.CreateBucketIfNotExists([]byte("bucket"))
    95  		if err != nil {
    96  			t.Fatal(err)
    97  		}
    98  
    99  		for i := 0; i < chunkSize; i++ {
   100  			key := []byte(fmt.Sprintf("key-%d-%d", chunkId, i))
   101  			value := []byte("value")
   102  			if err := b.Put(key, value); err != nil {
   103  				t.Fatal(err)
   104  			}
   105  		}
   106  
   107  		return nil
   108  	}); err != nil {
   109  		t.Fatal(err)
   110  	}
   111  }
   112  
   113  func skipOnMemlockLimitBelow(t *testing.T, memlockLimitRequest uint64) {
   114  	var info unix.Rlimit
   115  	if err := unix.Getrlimit(unix.RLIMIT_MEMLOCK, &info); err != nil {
   116  		t.Fatal(err)
   117  	}
   118  
   119  	if info.Cur < memlockLimitRequest {
   120  		t.Skip(fmt.Sprintf(
   121  			"skipping as RLIMIT_MEMLOCK is unsufficient: %v < %v",
   122  			info.Cur,
   123  			memlockLimitRequest,
   124  		))
   125  	}
   126  }