1 files changed, 47 insertions, 0 deletions
diff --git a/tools/trace/SkDebugfTracer.h b/tools/trace/SkDebugfTracer.h
new file mode 100644
index 0000000000..4350d1ac3c
--- /dev/null
+++ b/tools/trace/SkDebugfTracer.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkDebugfTracer_DEFINED
+#define SkDebugfTracer_DEFINED
+
+#include "SkEventTracer.h"
+#include "SkString.h"
+
+/**
+ * A SkEventTracer implementation that logs events using SkDebugf.
+ */
+class SkDebugfTracer : public SkEventTracer {
+public:
+    SkDebugfTracer() {}
+
+    SkEventTracer::Handle addTraceEvent(char phase,
+                                        const uint8_t* categoryEnabledFlag,
+                                        const char* name,
+                                        uint64_t id,
+                                        int numArgs,
+                                        const char** argNames,
+                                        const uint8_t* argTypes,
+                                        const uint64_t* argValues,
+                                        uint8_t flags) override;
+
+    void updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
+                                  const char* name,
+                                  SkEventTracer::Handle handle) override;
+
+    const uint8_t* getCategoryGroupEnabled(const char* name) override;
+
+    const char* getCategoryGroupName(const uint8_t* categoryEnabledFlag) override {
+        static const char* category = "category?";
+        return category;
+    }
+
+private:
+    SkString fIndent;
+    int fCnt = 0;
+};
+
+#endif