Progress reporting: include origins of running actions

For a user, an important information is to know which actions
are currently running and, more importantly, the target that
caused them. To do so, we need a bit of infrastructure.
- We have to keep track of begin and end of running actions,
  as well as the order in which they were started. That has
  to happen efficiently and in a thread-safe way.
- We have to compute and keep the origin map for actions,
  even if we don't serialize the action graph.

2 files changed, 4 insertions, 0 deletions

diff --git a/src/buildtool/execution_engine/executor/TARGETS b/src/buildtool/execution_engine/executor/TARGETS
index fa1e3e9f..37106368 100644
--- a/src/buildtool/execution_engine/executor/TARGETS
+++ b/src/buildtool/execution_engine/executor/TARGETS
@@ -10,6 +10,7 @@
     , ["src/buildtool/file_system", "file_system_manager"]
     , ["src/buildtool/execution_engine/dag", "dag"]
     , ["src/buildtool/execution_api/common", "common"]
+    , ["src/buildtool/progress_reporting", "progress"]
     , ["@", "gsl-lite", "", "gsl-lite"]
     ]
   , "stage": ["src", "buildtool", "execution_engine", "executor"]
diff --git a/src/buildtool/execution_engine/executor/executor.hpp b/src/buildtool/execution_engine/executor/executor.hpp
index c08a6a2c..9ef38488 100644
--- a/src/buildtool/execution_engine/executor/executor.hpp
+++ b/src/buildtool/execution_engine/executor/executor.hpp
@@ -19,6 +19,7 @@
 #include "src/buildtool/execution_engine/dag/dag.hpp"
 #include "src/buildtool/file_system/file_system_manager.hpp"
 #include "src/buildtool/logging/logger.hpp"
+#include "src/buildtool/progress_reporting/progress.hpp"
 
 /// \brief Implementations for executing actions and uploading artifacts.
 class ExecutorImpl {
@@ -53,6 +54,7 @@ class ExecutorImpl {
             return std::nullopt;
         }
 
+        Progress::Instance().Start(action->Content().Id());
         Statistics::Instance().IncrementActionsQueuedCounter();
 
         logger.Emit(LogLevel::Trace, [&inputs]() {
@@ -290,6 +292,7 @@ class ExecutorImpl {
         else {
             Statistics::Instance().IncrementActionsExecutedCounter();
         }
+        Progress::Instance().Stop(action->Content().Id());
 
         PrintInfo(logger, action->Command(), response);
         bool should_fail_outputs = false;