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package internal
import (
"fmt"
. "ioriotng/internal/generated/types"
"strconv"
"strings"
"sync"
)
var poolOfEventPairs = sync.Pool{
New: func() interface{} { return &eventPair{} },
}
type event interface {
String() string
GetTraceId() TraceId
GetPid() uint32
GetTid() uint32
GetTime() uint64
Recycle()
}
// Represents a pair of enter and exit events (e.g. entering the syscall + exiting it)
type eventPair struct {
enterEv, exitEv event
file file
comm string
duration uint64
tracepointMismatch bool
// To calculate the time difference from the previoud event.
prevPair *eventPair
durationToPrev uint64
}
func newEventPair(enterEv event) *eventPair {
e := poolOfEventPairs.Get().(*eventPair)
e.enterEv = enterEv
return e
}
func (e *eventPair) calculateDurations() {
e.duration = e.exitEv.GetTime() - e.enterEv.GetTime()
if e.prevPair != nil {
e.durationToPrev = e.enterEv.GetTime() - e.prevPair.exitEv.GetTime()
}
}
func (e *eventPair) is(id TraceId) bool {
return e.enterEv.GetTraceId() == id
}
func (e *eventPair) String() string {
var sb strings.Builder
sb.WriteString(fmt.Sprintf("%08dns %08dns", e.durationToPrev, e.duration))
sb.WriteString(" comm:")
sb.WriteString(e.comm)
sb.WriteString(" pidtid:")
sb.WriteString(strconv.FormatInt(int64(e.enterEv.GetPid()), 10))
sb.WriteString(".")
sb.WriteString(strconv.FormatInt(int64(e.enterEv.GetTid()), 10))
sb.WriteString(" name:")
sb.WriteString(e.enterEv.GetTraceId().Name())
if retEv, ok := e.exitEv.(*RetEvent); ok {
sb.WriteString(":")
sb.WriteString(strconv.FormatInt(int64(retEv.Ret), 10))
}
sb.WriteString(" ")
sb.WriteString(e.file.String())
if e.tracepointMismatch {
sb.WriteString(" MISMATCH")
}
return sb.String()
}
func (e *eventPair) dump() string {
return fmt.Sprintf("%v with enterEv(%v) and exitEv(%v)", e, e.enterEv, e.exitEv)
}
func (e *eventPair) recycle() {
e.enterEv.Recycle()
e.exitEv.Recycle()
e.prevPair = nil
poolOfEventPairs.Put(e)
}
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