getQueuedBuilds(): Periodically stop to handle priority bumps

Dependencies

• [2] ZK76B5ZZ Load the queue in order of global priority
• [3] T5BIOVJE Add support for tracking custom metrics
• [4] VQISTKOP hydra-queue-runner: Use substitutes
• [5] MHVIT4JY Split hydra-queue-runner.cc more
• [6] OG3Z3QGC Namespace cleanup
• [7] HJOEIMLR Refactor
• [8] WE5Q2NVI Allow build to be bumped to the front of the queue via the web interface
• [9] ACBS7C6Q hydra-queue-runner: Detect changes to the scheduling shares

Change contents

• replacement in src/hydra-queue-runner/queue-monitor.cc at line 39
  [3.20820]→[3.20820:20872](∅→∅)
  − getQueuedBuilds(*conn, store, lastBuildId);
  [3.20820]

  [3.20872]
  + bool done = getQueuedBuilds(*conn, store, lastBuildId);
• replacement in src/hydra-queue-runner/queue-monitor.cc at line 43
  [3.20964]→[3.20964:21026](∅→∅)
  − conn->await_notification();

  − nrQueueWakeups++;
  [3.20964]

  [3.21026]
  + if (done) {

  + conn->await_notification();

  + nrQueueWakeups++;

  + } else

  + conn->get_notifs();
• replacement in src/hydra-queue-runner/queue-monitor.cc at line 67
  [3.21512]→[3.21512:21620](∅→∅)
  − void State::getQueuedBuilds(Connection & conn, std::shared_ptr<StoreAPI> store, unsigned int & lastBuildId)
  [3.21512]

  [3.21620]
  + bool State::getQueuedBuilds(Connection & conn, std::shared_ptr<StoreAPI> store, unsigned int & lastBuildId)
• edit in src/hydra-queue-runner/queue-monitor.cc at line 76
  [2.132]

  [3.21893]
  +

  + unsigned int newLastBuildId = lastBuildId;
• replacement in src/hydra-queue-runner/queue-monitor.cc at line 91
  [3.22293]→[3.22293:22345](∅→∅)
  − if (id > lastBuildId) lastBuildId = id;
  [3.22293]

  [3.22345]
  + if (id > newLastBuildId) newLastBuildId = id;
• edit in src/hydra-queue-runner/queue-monitor.cc at line 237
  [3.27972]

  [2.839]
  + system_time start = std::chrono::system_clock::now();

  +
• edit in src/hydra-queue-runner/queue-monitor.cc at line 260
  [3.28655]

  [3.28655]
  +

  + /* Stop after a certain time to allow priority bumps to be

  + processed. */

  + if (std::chrono::system_clock::now() > start + std::chrono::seconds(600)) break;
• edit in src/hydra-queue-runner/queue-monitor.cc at line 265
  [3.28661]

  [3.28661]
  +

  + lastBuildId = newBuildsByID.empty() ? newLastBuildId : newBuildsByID.begin()->first - 1;

  + return newBuildsByID.empty();
• replacement in src/hydra-queue-runner/state.hh at line 380
  [3.2260]→[3.764:875](∅→∅),[3.7626]→[3.764:875](∅→∅)
  − void getQueuedBuilds(Connection & conn, std::shared_ptr<nix::StoreAPI> store, unsigned int & lastBuildId);
  [3.2260]

  [3.7732]
  + bool getQueuedBuilds(Connection & conn, std::shared_ptr<nix::StoreAPI> store, unsigned int & lastBuildId);