-
Notifications
You must be signed in to change notification settings - Fork 0
/
fileutil.go
87 lines (72 loc) · 1.77 KB
/
fileutil.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
package gomap
import (
"log"
"os"
"strconv"
"github.com/go-errors/errors"
)
func (h *Hashmap) initN(folder string, N uint64, slabSize int64) {
h.Folder = folder
m, f_map, err := h.openMmapHash(N)
if err != nil {
log.Fatal(errors.Wrap(err, 1))
}
slab, f_slab, err := h.openMmapSlab(slabSize)
if err != nil {
log.Fatal(errors.Wrap(err, 1))
}
err = h.writeCapacity(N)
if err != nil {
log.Fatal(errors.Wrap(err, 1))
}
err = h.writeSlabSize(slabSize)
if err != nil {
log.Fatal(errors.Wrap(err, 1))
}
h.hashMap = m
h.hashMapFile = f_map
h.slabMap = slab
h.slabFILE = f_slab
h.slabSize = slabSize
//todo
h.slabOffset = getSlabOffset(h.slabMap)
//xxx
if *h.slabOffset == 0 {
sentinel := []byte("offset")
h.writeSlab(sentinel)
*h.slabOffset = SlabOffset(len(sentinel))
}
h.Capacity = N
h.Count = getCount(h.slabMap)
keys := h.getKeys()
h.Keys = &keys
}
func (h *Hashmap) writeSlabSize(slabSize int64) error {
s := strconv.FormatInt(slabSize, 10)
return os.WriteFile(h.Folder+"/slabSize", []byte(s), 0655)
}
func (h *Hashmap) writeCapacity(N uint64) error {
s := strconv.FormatUint(N, 10)
return os.WriteFile(h.Folder+"/capacity", []byte(s), 0655)
}
func (h *Hashmap) readCapacity() (uint64, int64) {
dat, err := os.ReadFile(h.Folder + "/capacity")
if err != nil {
return DEFAULTMAPSIZE, DEFAULTSLABSIZE
}
capacity, err := strconv.ParseUint(string(dat), 10, 64)
handleError(err)
slabdat, err := os.ReadFile(h.Folder + "/slabSize")
if err != nil {
return DEFAULTMAPSIZE, DEFAULTSLABSIZE
}
slabSize, err := strconv.ParseInt(string(slabdat), 10, 64)
handleError(err)
return capacity, slabSize
}
func (h *Hashmap) createDirectory() {
err := os.MkdirAll(h.Folder, 0755)
if err != nil {
log.Fatal("1", h.Folder, "2", errors.Wrap(err, 1))
}
}