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node_modules/react-native/ReactCommon/jsinspector-modern/HostTargetTracing.cpp

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include <jsinspector-modern/tracing/TracingState.h>
+
+#include "HostTarget.h"
+#include "HostTargetTraceRecording.h"
+
+namespace facebook::react::jsinspector_modern {
+
+bool HostTargetController::startTracing(tracing::Mode tracingMode) {
+  return target_.startTracing(tracingMode);
+}
+
+tracing::TraceRecordingState HostTargetController::stopTracing() {
+  return target_.stopTracing();
+}
+
+std::shared_ptr<HostTracingAgent> HostTarget::createTracingAgent(
+    tracing::TraceRecordingState& state) {
+  auto agent = std::make_shared<HostTracingAgent>(state);
+  agent->setTracedInstance(currentInstance_.get());
+  return agent;
+}
+
+bool HostTarget::startTracing(tracing::Mode tracingMode) {
+  if (traceRecording_ != nullptr) {
+    if (traceRecording_->isBackgroundInitiated() &&
+        tracingMode == tracing::Mode::CDP) {
+      traceRecording_.reset();
+    } else {
+      return false;
+    }
+  }
+
+  traceRecording_ =
+      std::make_unique<HostTargetTraceRecording>(tracingMode, *this);
+  traceRecording_->setTracedInstance(currentInstance_.get());
+  traceRecording_->start();
+
+  return true;
+}
+
+tracing::TraceRecordingState HostTarget::stopTracing() {
+  assert(traceRecording_ != nullptr && "No tracing in progress");
+
+  auto state = traceRecording_->stop();
+  traceRecording_.reset();
+
+  return state;
+}
+
+tracing::TracingState HostTarget::tracingState() const {
+  if (traceRecording_ == nullptr) {
+    return tracing::TracingState::Disabled;
+  }
+
+  if (traceRecording_->isBackgroundInitiated()) {
+    return tracing::TracingState::EnabledInBackgroundMode;
+  }
+
+  // This means we have a traceRecording_, but not running in the background.
+  // CDP initiated this trace so we should report as disabled.
+  return tracing::TracingState::EnabledInCDPMode;
+}
+
+} // namespace facebook::react::jsinspector_modern