TraceEventProfile as plain data structs (#50984)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/50984

# Changelog: [Internal]

We are only using these struct to define how they will be serialize before sending over CDP, no need for custom constructors.

Also updated the naming of the serialization method to align with other parts of the project: `asDynamic()` -> `toDynamic()`.

Reviewed By: huntie

Differential Revision: D73774114

fbshipit-source-id: d0371cf3dee7584daa77054f73aced440550e674

packages/react-native/ReactCommon/hermes/inspector-modern/chrome/HermesRuntimeSamplingProfileSerializer.cpp

@@ -122,7 +122,7 @@ RuntimeSamplingProfile::SampleCallStackFrame convertHermesFrameToTracingFrame(
 }
 
 RuntimeSamplingProfile::Sample convertHermesSampleToTracingSample(
-    hermes::sampling_profiler::ProfileSample& hermesSample) {
+    const hermes::sampling_profiler::ProfileSample& hermesSample) {
   uint64_t reconciledTimestamp = hermesSample.getTimestamp();
   std::vector<hermes::sampling_profiler::ProfileSampleCallStackFrame*>
       hermesSampleCallStack = hermesSample.getCallStack();

packages/react-native/ReactCommon/jsinspector-modern/tracing/PerformanceTracer.cpp

@@ -320,7 +320,7 @@ folly::dynamic PerformanceTracer::getSerializedRuntimeProfileChunkTraceEvent(
       .pid = processId_,
       .tid = threadId,
       .args =
-          folly::dynamic::object("data", traceEventProfileChunk.asDynamic()),
+          folly::dynamic::object("data", traceEventProfileChunk.toDynamic()),
   });
 }
 

packages/react-native/ReactCommon/jsinspector-modern/tracing/RuntimeSamplingProfileTraceEventSerializer.cpp

@@ -148,9 +148,11 @@ void RuntimeSamplingProfileTraceEventSerializer::bufferProfileChunkTraceEvent(
           chunk.threadId,
           chunk.timestamp,
           TraceEventProfileChunk{
-              TraceEventProfileChunk::CPUProfile{
-                  traceEventNodes, chunk.samples},
-              TraceEventProfileChunk::TimeDeltas{chunk.timeDeltas},
+              .cpuProfile =
+                  TraceEventProfileChunk::CPUProfile{
+                      traceEventNodes, chunk.samples},
+              .timeDeltas =
+                  TraceEventProfileChunk::TimeDeltas{chunk.timeDeltas},
           }));
 }
 

packages/react-native/ReactCommon/jsinspector-modern/tracing/TraceEventProfile.h

@@ -9,8 +9,6 @@
 
 #include <folly/dynamic.h>
 
-#include <utility>
-
 namespace facebook::react::jsinspector_modern::tracing {
 
 /// Arbitrary data structure, which represents payload of the "ProfileChunk"
@@ -19,21 +17,11 @@ struct TraceEventProfileChunk {
   /// Deltas between timestamps of chronolocigally sorted samples.
   /// Will be sent as part of the "ProfileChunk" trace event.
   struct TimeDeltas {
-   public:
-    explicit TimeDeltas(std::vector<long long> deltas)
-        : deltas_(std::move(deltas)) {}
-
-    folly::dynamic asDynamic() const {
-      folly::dynamic value = folly::dynamic::array();
-      for (auto delta : deltas_) {
-        value.push_back(delta);
-      }
-
-      return value;
+    folly::dynamic toDynamic() const {
+      return folly::dynamic::array(deltas.begin(), deltas.end());
     }
 
-   private:
-    std::vector<long long> deltas_;
+    std::vector<long long> deltas;
   };
 
   /// Contains Profile information that will be emitted in this chunk: nodes and
@@ -45,113 +33,73 @@ struct TraceEventProfileChunk {
     struct Node {
       /// Unique call frame in the call stack.
       struct CallFrame {
-       public:
-        CallFrame(
-            std::string codeType,
-            uint32_t scriptId,
-            std::string functionName,
-            std::optional<std::string> url = std::nullopt,
-            std::optional<uint32_t> lineNumber = std::nullopt,
-            std::optional<uint32_t> columnNumber = std::nullopt)
-            : codeType_(std::move(codeType)),
-              scriptId_(scriptId),
-              functionName_(std::move(functionName)),
-              url_(std::move(url)),
-              lineNumber_(lineNumber),
-              columnNumber_(columnNumber) {}
-
-        folly::dynamic asDynamic() const {
+        folly::dynamic toDynamic() const {
           folly::dynamic dynamicCallFrame = folly::dynamic::object();
-          dynamicCallFrame["codeType"] = codeType_;
-          dynamicCallFrame["scriptId"] = scriptId_;
-          dynamicCallFrame["functionName"] = functionName_;
-          if (url_.has_value()) {
-            dynamicCallFrame["url"] = url_.value();
+          dynamicCallFrame["codeType"] = codeType;
+          dynamicCallFrame["scriptId"] = scriptId;
+          dynamicCallFrame["functionName"] = functionName;
+          if (url.has_value()) {
+            dynamicCallFrame["url"] = url.value();
           }
-          if (lineNumber_.has_value()) {
-            dynamicCallFrame["lineNumber"] = lineNumber_.value();
+          if (lineNumber.has_value()) {
+            dynamicCallFrame["lineNumber"] = lineNumber.value();
           }
-          if (columnNumber_.has_value()) {
-            dynamicCallFrame["columnNumber"] = columnNumber_.value();
+          if (columnNumber.has_value()) {
+            dynamicCallFrame["columnNumber"] = columnNumber.value();
           }
 
           return dynamicCallFrame;
         }
 
-       private:
-        std::string codeType_;
-        uint32_t scriptId_;
-        std::string functionName_;
-        std::optional<std::string> url_;
-        std::optional<uint32_t> lineNumber_;
-        std::optional<uint32_t> columnNumber_;
+        std::string codeType;
+        uint32_t scriptId;
+        std::string functionName;
+        std::optional<std::string> url;
+        std::optional<uint32_t> lineNumber;
+        std::optional<uint32_t> columnNumber;
       };
 
-     public:
-      Node(
-          uint32_t id,
-          CallFrame callFrame,
-          std::optional<uint32_t> parentId = std::nullopt)
-          : id_(id), callFrame_(std::move(callFrame)), parentId_(parentId) {}
-
-      folly::dynamic asDynamic() const {
+      folly::dynamic toDynamic() const {
         folly::dynamic dynamicNode = folly::dynamic::object();
 
-        dynamicNode["callFrame"] = callFrame_.asDynamic();
-        dynamicNode["id"] = id_;
-        if (parentId_.has_value()) {
-          dynamicNode["parent"] = parentId_.value();
+        dynamicNode["callFrame"] = callFrame.toDynamic();
+        dynamicNode["id"] = id;
+        if (parentId.has_value()) {
+          dynamicNode["parent"] = parentId.value();
         }
 
         return dynamicNode;
       }
 
-     private:
-      uint32_t id_;
-      CallFrame callFrame_;
-      std::optional<uint32_t> parentId_;
+      uint32_t id;
+      CallFrame callFrame;
+      std::optional<uint32_t> parentId;
     };
 
-   public:
-    CPUProfile(std::vector<Node> nodes, std::vector<uint32_t> samples)
-        : nodes_(std::move(nodes)), samples_(std::move(samples)) {}
-
-    folly::dynamic asDynamic() const {
+    folly::dynamic toDynamic() const {
       folly::dynamic dynamicNodes = folly::dynamic::array();
-      for (const auto& node : nodes_) {
-        dynamicNodes.push_back(node.asDynamic());
-      }
-
-      folly::dynamic dynamicSamples = folly::dynamic::array();
-      for (auto sample : samples_) {
-        dynamicSamples.push_back(sample);
+      dynamicNodes.reserve(nodes.size());
+      for (const auto& node : nodes) {
+        dynamicNodes.push_back(node.toDynamic());
       }
+      folly::dynamic dynamicSamples =
+          folly::dynamic::array(samples.begin(), samples.end());
 
       return folly::dynamic::object("nodes", dynamicNodes)(
           "samples", dynamicSamples);
     }
 
-   private:
-    std::vector<Node> nodes_;
-    std::vector<uint32_t> samples_;
+    std::vector<Node> nodes;
+    std::vector<uint32_t> samples;
   };
 
- public:
-  TraceEventProfileChunk(CPUProfile cpuProfile, TimeDeltas timeDeltas)
-      : cpuProfile_(std::move(cpuProfile)),
-        timeDeltas_(std::move(timeDeltas)) {}
-
-  folly::dynamic asDynamic() const {
-    folly::dynamic value = folly::dynamic::object;
-    value["cpuProfile"] = cpuProfile_.asDynamic();
-    value["timeDeltas"] = timeDeltas_.asDynamic();
-
-    return value;
+  folly::dynamic toDynamic() const {
+    return folly::dynamic::object("cpuProfile", cpuProfile.toDynamic())(
+        "timeDeltas", timeDeltas.toDynamic());
   }
 
- private:
-  CPUProfile cpuProfile_;
-  TimeDeltas timeDeltas_;
+  CPUProfile cpuProfile;
+  TimeDeltas timeDeltas;
 };
 
 } // namespace facebook::react::jsinspector_modern::tracing