From 349640e597477f57ab7d4de30f9d0bbc0e21fbd3 Mon Sep 17 00:00:00 2001
From: Klaus Aehlig <klaus.aehlig@huawei.com>
Date: Mon, 26 May 2025 14:14:20 +0200
Subject: profile: include time of build start

When using a serve end point, the analysis phase might take quite
long if serve has to actually build a delegated target or, at
least, has to synchronize artifacts with the remote end point.
Therefore, also record the time the build phase started (if building
is requested) as an additional time stamp in the profile.
---
 src/buildtool/main/main.cpp       | 3 +++
 src/buildtool/profile/profile.cpp | 4 ++++
 src/buildtool/profile/profile.hpp | 1 +
 3 files changed, 8 insertions(+)

(limited to 'src')

diff --git a/src/buildtool/main/main.cpp b/src/buildtool/main/main.cpp
index 10abfa1a..3da6de93 100644
--- a/src/buildtool/main/main.cpp
+++ b/src/buildtool/main/main.cpp
@@ -1244,6 +1244,9 @@ auto main(int argc, char* argv[]) -> int {
                 analyse_result->id.ToShortString(
                     Evaluator::GetExpressionLogLimit()));
 
+            if (profile != nullptr) {
+                profile->StartBuild();
+            }
             auto build_result =
                 traverser.BuildAndStage(artifacts,
                                         runfiles,
diff --git a/src/buildtool/profile/profile.cpp b/src/buildtool/profile/profile.cpp
index 5ee9cd15..1d8a7b46 100644
--- a/src/buildtool/profile/profile.cpp
+++ b/src/buildtool/profile/profile.cpp
@@ -178,3 +178,7 @@ void Profile::SetRemoteExecutionConfig(RemoteExecutionConfig const& config) {
     remote["dispatch"] = dispatch;
     profile_["remote"] = remote;
 }
+
+void Profile::StartBuild() {
+    profile_["build start time"] = std::time(nullptr);
+}
diff --git a/src/buildtool/profile/profile.hpp b/src/buildtool/profile/profile.hpp
index 0db655fb..099ce2cc 100644
--- a/src/buildtool/profile/profile.hpp
+++ b/src/buildtool/profile/profile.hpp
@@ -46,6 +46,7 @@ class Profile {
                              IExecutionResponse::Ptr const& response,
                              std::string const& cwd);
     void NoteAnalysisError(std::string const& error_message);
+    void StartBuild();
 
   private:
     struct ActionData {
-- 
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