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
|
// Copyright 2024 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package covermerger
import "github.com/google/syzkaller/pkg/log"
func makeFileLineCoverMerger(fvs FileVersions, base RepoCommit) FileCoverageMerger {
baseFile := ""
baseFileExists := false
for repoCommit, fv := range fvs {
if repoCommit == base {
baseFile = fv
baseFileExists = true
break
}
}
if !baseFileExists {
return &DeletedFileLineMerger{}
}
a := &FileLineCoverMerger{
MergeResult: &MergeResult{
HitCounts: make(map[int]int64),
FileExists: true,
LineDetails: make(map[int][]*FileRecord),
},
baseFile: baseFile,
matchers: make(map[RepoCommit]*LineToLineMatcher),
lostFrames: map[RepoCommit]int64{},
}
for repoBranch, fv := range fvs {
a.matchers[repoBranch] = makeLineToLineMatcher(fv, baseFile)
}
return a
}
type FileLineCoverMerger struct {
*MergeResult
baseFile string
matchers map[RepoCommit]*LineToLineMatcher
lostFrames map[RepoCommit]int64
}
func (a *FileLineCoverMerger) Add(record *FileRecord) {
if record.StartLine < 0 {
// This record doesn't have information about line coverage.
// The best we sometimes have is the function name.
return
}
if a.matchers[record.RepoCommit] == nil {
if record.HitCount > 0 {
a.lostFrames[record.RepoCommit]++
}
return
}
if targetLine := a.matchers[record.RepoCommit].SameLinePos(record.StartLine); targetLine != -1 {
a.HitCounts[targetLine] += int64(record.HitCount)
a.LineDetails[targetLine] = append(a.LineDetails[targetLine], record)
}
}
func (a *FileLineCoverMerger) Result() *MergeResult {
for repoBranch, lostFrames := range a.lostFrames {
log.Logf(1, "\t[warn] lost %d frames from repoCommit(%s, %s)",
lostFrames, repoBranch.Repo, repoBranch.Commit)
}
return a.MergeResult
}
|
