1 files changed, 41 insertions, 0 deletions
diff --git a/internal/event.go b/internal/event.go
new file mode 100644
index 0000000..7de9307
--- /dev/null
+++ b/internal/event.go
@@ -0,0 +1,41 @@
+package internal
+
+import (
+	"fmt"
+	. "ioriotng/internal/generated/types"
+	"strings"
+)
+
+type event interface {
+	String() string
+	GetSyscallId() SyscallId
+	GetPid() uint32
+	GetTid() uint32
+	GetTime() uint32
+	Recycle()
+}
+
+type enterExitEvent struct {
+	enterEv, exitEv event
+}
+
+func (e enterExitEvent) String() string {
+	var sb strings.Builder
+
+	duration := e.exitEv.GetTime() - e.enterEv.GetTime()
+	sb.WriteString(fmt.Sprintf("%08d µs", duration))
+
+	sb.WriteString(" ")
+	sb.WriteString(e.enterEv.GetSyscallId().Name())
+
+	return sb.String()
+}
+
+func (e enterExitEvent) dump() string {
+	return fmt.Sprintf("%v with enterEv(%v) and exitEv(%v)", e, e.enterEv, e.exitEv)
+}
+
+func (e enterExitEvent) recycle() {
+	e.enterEv.Recycle()
+	e.exitEv.Recycle()
+}