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path: root/adapter/statsclient/stat_segment.go
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Diffstat (limited to 'adapter/statsclient/stat_segment.go')
-rw-r--r--adapter/statsclient/stat_segment.go86
1 files changed, 50 insertions, 36 deletions
diff --git a/adapter/statsclient/stat_segment.go b/adapter/statsclient/stat_segment.go
index 9f028eb..0d988ba 100644
--- a/adapter/statsclient/stat_segment.go
+++ b/adapter/statsclient/stat_segment.go
@@ -52,20 +52,11 @@ type statSegment struct {
legacyVersion bool
}
-func (c *statSegment) getStatDirVector() unsafe.Pointer {
- dirOffset, _, _ := c.getOffsets()
- return unsafe.Pointer(&c.sharedHeader[dirOffset])
-}
-
-func (c *statSegment) getStatDirIndex(p unsafe.Pointer, index uint32) *statSegDirectoryEntry {
- return (*statSegDirectoryEntry)(unsafe.Pointer(uintptr(p) + uintptr(index)*unsafe.Sizeof(statSegDirectoryEntry{})))
-}
-
-func (c *statSegment) getHeader() (header statSegSharedHeader) {
+func (c *statSegment) getHeader() (header sharedHeader) {
if c.legacyVersion {
- return statSegHeaderLegacy(c.sharedHeader)
+ return loadSharedHeaderLegacy(c.sharedHeader)
}
- return statSegHeader(c.sharedHeader)
+ return loadSharedHeader(c.sharedHeader)
}
func (c *statSegment) getEpoch() (int64, bool) {
@@ -129,17 +120,17 @@ func (c *statSegment) connect(sockName string) error {
return fmt.Errorf("mapping shared memory failed: %v", err)
}
+ Log.Debugf("successfuly mmapped shared memory segment (size: %v) %v", size, len(data))
+
c.sharedHeader = data
c.memorySize = size
- Log.Debugf("successfuly mmapped shared memory segment (size: %v)", size)
-
- hdr := statSegHeader(c.sharedHeader)
+ hdr := loadSharedHeader(c.sharedHeader)
Log.Debugf("stat segment header: %+v", hdr)
if hdr.legacyVersion() {
c.legacyVersion = true
- hdr = statSegHeaderLegacy(c.sharedHeader)
+ hdr = loadSharedHeaderLegacy(c.sharedHeader)
Log.Debugf("falling back to legacy version (VPP <=19.04) of stat segment (header: %+v)", hdr)
}
@@ -167,6 +158,16 @@ func (c *statSegment) disconnect() error {
type statDirectoryType int32
+const (
+ statDirIllegal = 0
+ statDirScalarIndex = 1
+ statDirCounterVectorSimple = 2
+ statDirCounterVectorCombined = 3
+ statDirErrorIndex = 4
+ statDirNameVector = 5
+ statDirEmpty = 6
+)
+
func (t statDirectoryType) String() string {
return adapter.StatType(t).String()
}
@@ -182,14 +183,23 @@ type statSegDirectoryEntry struct {
name [128]byte
}
+func (c *statSegment) getStatDirVector() unsafe.Pointer {
+ dirOffset, _, _ := c.getOffsets()
+ return unsafe.Pointer(&c.sharedHeader[dirOffset])
+}
+
+func (c *statSegment) getStatDirIndex(p unsafe.Pointer, index uint32) *statSegDirectoryEntry {
+ return (*statSegDirectoryEntry)(unsafe.Pointer(uintptr(p) + uintptr(index)*unsafe.Sizeof(statSegDirectoryEntry{})))
+}
+
func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Stat {
dirType := adapter.StatType(dirEntry.directoryType)
switch dirType {
- case adapter.ScalarIndex:
+ case statDirScalarIndex:
return adapter.ScalarStat(dirEntry.unionData)
- case adapter.ErrorIndex:
+ case statDirErrorIndex:
_, errOffset, _ := c.getOffsets()
offsetVector := unsafe.Pointer(&c.sharedHeader[errOffset])
@@ -200,17 +210,19 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
val := *(*adapter.Counter)(statSegPointer(offsetVector, offset))
errData = val
} else {
- vecLen := vectorLen(offsetVector)
- for i := uint64(0); i < vecLen; i++ {
+ vecLen := uint32(vectorLen(offsetVector))
+
+ for i := uint32(0); i < vecLen; i++ {
cb := *(*uint64)(statSegPointer(offsetVector, uintptr(i)*unsafe.Sizeof(uint64(0))))
offset := uintptr(cb) + uintptr(dirEntry.unionData)*unsafe.Sizeof(adapter.Counter(0))
+ debugf("error index, cb: %d, offset: %d", cb, offset)
val := *(*adapter.Counter)(statSegPointer(unsafe.Pointer(&c.sharedHeader[0]), offset))
errData += val
}
}
return adapter.ErrorStat(errData)
- case adapter.SimpleCounterVector:
+ case statDirCounterVectorSimple:
if dirEntry.unionData == 0 {
debugf("offset invalid for %s", dirEntry.name)
break
@@ -219,16 +231,16 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
break
}
- vecLen := vectorLen(unsafe.Pointer(&c.sharedHeader[dirEntry.unionData]))
+ vecLen := uint32(vectorLen(unsafe.Pointer(&c.sharedHeader[dirEntry.unionData])))
offsetVector := statSegPointer(unsafe.Pointer(&c.sharedHeader[0]), uintptr(dirEntry.offsetVector))
data := make([][]adapter.Counter, vecLen)
- for i := uint64(0); i < vecLen; i++ {
+ for i := uint32(0); i < vecLen; i++ {
cb := *(*uint64)(statSegPointer(offsetVector, uintptr(i)*unsafe.Sizeof(uint64(0))))
counterVec := unsafe.Pointer(&c.sharedHeader[uintptr(cb)])
- vecLen2 := vectorLen(counterVec)
+ vecLen2 := uint32(vectorLen(counterVec))
data[i] = make([]adapter.Counter, vecLen2)
- for j := uint64(0); j < vecLen2; j++ {
+ for j := uint32(0); j < vecLen2; j++ {
offset := uintptr(j) * unsafe.Sizeof(adapter.Counter(0))
val := *(*adapter.Counter)(statSegPointer(counterVec, offset))
data[i][j] = val
@@ -236,7 +248,7 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
}
return adapter.SimpleCounterStat(data)
- case adapter.CombinedCounterVector:
+ case statDirCounterVectorCombined:
if dirEntry.unionData == 0 {
debugf("offset invalid for %s", dirEntry.name)
break
@@ -245,16 +257,16 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
break
}
- vecLen := vectorLen(unsafe.Pointer(&c.sharedHeader[dirEntry.unionData]))
+ vecLen := uint32(vectorLen(unsafe.Pointer(&c.sharedHeader[dirEntry.unionData])))
offsetVector := statSegPointer(unsafe.Pointer(&c.sharedHeader[0]), uintptr(dirEntry.offsetVector))
data := make([][]adapter.CombinedCounter, vecLen)
- for i := uint64(0); i < vecLen; i++ {
+ for i := uint32(0); i < vecLen; i++ {
cb := *(*uint64)(statSegPointer(offsetVector, uintptr(i)*unsafe.Sizeof(uint64(0))))
counterVec := unsafe.Pointer(&c.sharedHeader[uintptr(cb)])
- vecLen2 := vectorLen(counterVec)
+ vecLen2 := uint32(vectorLen(counterVec))
data[i] = make([]adapter.CombinedCounter, vecLen2)
- for j := uint64(0); j < vecLen2; j++ {
+ for j := uint32(0); j < vecLen2; j++ {
offset := uintptr(j) * unsafe.Sizeof(adapter.CombinedCounter{})
val := *(*adapter.CombinedCounter)(statSegPointer(counterVec, offset))
data[i][j] = val
@@ -262,7 +274,7 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
}
return adapter.CombinedCounterStat(data)
- case adapter.NameVector:
+ case statDirNameVector:
if dirEntry.unionData == 0 {
debugf("offset invalid for %s", dirEntry.name)
break
@@ -271,21 +283,21 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
break
}
- vecLen := vectorLen(unsafe.Pointer(&c.sharedHeader[dirEntry.unionData]))
+ vecLen := uint32(vectorLen(unsafe.Pointer(&c.sharedHeader[dirEntry.unionData])))
offsetVector := statSegPointer(unsafe.Pointer(&c.sharedHeader[0]), uintptr(dirEntry.offsetVector))
data := make([]adapter.Name, vecLen)
- for i := uint64(0); i < vecLen; i++ {
+ for i := uint32(0); i < vecLen; i++ {
cb := *(*uint64)(statSegPointer(offsetVector, uintptr(i)*unsafe.Sizeof(uint64(0))))
if cb == 0 {
debugf("name vector out of range for %s (%v)", dirEntry.name, i)
continue
}
nameVec := unsafe.Pointer(&c.sharedHeader[cb])
- vecLen2 := vectorLen(nameVec)
+ vecLen2 := uint32(vectorLen(nameVec))
nameStr := make([]byte, 0, vecLen2)
- for j := uint64(0); j < vecLen2; j++ {
+ for j := uint32(0); j < vecLen2; j++ {
offset := uintptr(j) * unsafe.Sizeof(byte(0))
val := *(*byte)(statSegPointer(nameVec, offset))
if val > 0 {
@@ -296,11 +308,13 @@ func (c *statSegment) copyEntryData(dirEntry *statSegDirectoryEntry) adapter.Sta
}
return adapter.NameStat(data)
+ case statDirEmpty:
+ // no-op
+
default:
// TODO: monitor occurrences with metrics
debugf("Unknown type %d for stat entry: %q", dirEntry.directoryType, dirEntry.name)
}
-
return nil
}