libstore: make Worker::childStarted private

this can be a proper WorkResult now. childTerminated is unfortunately a
lot more stubborn and won't be made private for quite a while yet. once
we can get rid of the Worker poll loop that *should* be possible though

Change-Id: I2218df202da5cb84e852f6a37e4c20367495b617

1 files changed, 5 insertions, 0 deletions

diff --git a/src/libstore/build/goal.hh b/src/libstore/build/goal.hh
index 114abda41..2ac96ace1 100644
--- a/src/libstore/build/goal.hh
+++ b/src/libstore/build/goal.hh
@@ -112,6 +112,10 @@ public:
     struct [[nodiscard]] WaitForGoals {
         Goals goals;
     };
+    struct [[nodiscard]] WaitForWorld {
+        std::set<int> fds;
+        bool inBuildSlot;
+    };
     struct [[nodiscard]] Finished {
         ExitCode result;
         std::unique_ptr<Error> ex;
@@ -127,6 +131,7 @@ public:
                                           WaitForAWhile,
                                           ContinueImmediately,
                                           WaitForGoals,
+                                          WaitForWorld,
                                           Finished>
     {
         WorkResult() = delete;