1 files changed, 49 insertions, 0 deletions
diff --git a/src/buildtool/computed_roots/roots_progress.cpp b/src/buildtool/computed_roots/roots_progress.cpp
new file mode 100644
index 00000000..e50876cd
--- /dev/null
+++ b/src/buildtool/computed_roots/roots_progress.cpp
@@ -0,0 +1,49 @@
+// Copyright 2025 Huawei Cloud Computing Technology Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "src/buildtool/computed_roots/roots_progress.hpp"
+
+#include <functional>
+#include <string>
+
+#include "fmt/core.h"
+#include "src/buildtool/logging/log_level.hpp"
+
+auto RootsProgress::Reporter(gsl::not_null<Statistics*> const& stats,
+                             gsl::not_null<TaskTracker*> const& tasks,
+                             Logger const* logger) noexcept
+    -> progress_reporter_t {
+    return BaseProgressReporter::Reporter([stats, tasks, logger]() {
+        auto const& sample = tasks->Sample();
+        // Note: order matters; queued has to be queried last
+        int cached = stats->ActionsCachedCounter();
+        int run = stats->ActionsExecutedCounter();
+        int served = stats->ExportsServedCounter();
+        int queued = stats->ActionsQueuedCounter();
+        int active = queued - run - cached - served;
+        auto now_msg = std::string{};
+        if (active > 0 and not sample.empty()) {
+            now_msg = fmt::format(" ({}{})", sample, active > 1 ? ", ..." : "");
+        }
+        Logger::Log(
+            logger,
+            LogLevel::Progress,
+            "Computed Roots: {} cached, {} served, {} run, {} processing{}.",
+            cached,
+            served,
+            run,
+            active,
+            now_msg);
+    });
+}