1 files changed, 52 insertions, 0 deletions
diff --git a/internal/flamegraph/worker.go b/internal/flamegraph/worker.go
new file mode 100644
index 0000000..e590163
--- /dev/null
+++ b/internal/flamegraph/worker.go
@@ -0,0 +1,52 @@
+package flamegraph
+
+import (
+	"context"
+	"ior/internal/event"
+	"ior/internal/types"
+	"sync"
+	"time"
+)
+
+type worker struct {
+	collapsed collapsed
+	done      chan struct{}
+}
+
+func newWorker() worker {
+	return worker{collapsed: make(collapsed)}
+}
+
+// Run until ch is closed or has no more events and ctx is done.
+func (w worker) run(ctx context.Context, wg *sync.WaitGroup, ch <-chan *event.Pair) {
+	defer wg.Done()
+
+	for {
+		select {
+		case ev := <-ch:
+			filePath := ev.File.Name()
+			pathMap, ok := w.collapsed[filePath]
+			if !ok {
+				pathMap = make(map[types.TraceId]counter)
+			}
+
+			traceId := ev.EnterEv.GetTraceId()
+			cnt := pathMap[traceId]
+			cnt.count++
+			cnt.duration += ev.Duration
+			pathMap[traceId] = cnt
+
+			w.collapsed[filePath] = pathMap
+			// TODO: Enable Go race detector
+			ev.Recycle()
+
+		default:
+			select {
+			case <-ctx.Done():
+				return
+			default:
+				time.Sleep(time.Millisecond * 10)
+			}
+		}
+	}
+}