Record the machine used for a build step

Dependencies

• [2] FQQRJUO4 Mark builds as busy
• [3] NJJ7H64S Very basic multi-threaded queue runner
• [4] 5AIYUMTB Basic remote building
• [5] T2EIYJNG On SIGINT, shut down the builder threads
• [6] YZAI5GQU Implement a database connection pool
• [7] 24BMQDZA Start of single-process hydra-queue-runner
• [8] ENXUSMSV Make concurrency more robust
• [9] 62MQPRXC Pass null values to libpqxx properly

Change contents

• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 240
  [3.6634]→[3.6634:6730](∅→∅)
  − BuildStepStatus status, const std::string & errorMsg = "", BuildID propagatedFrom = 0);
  [3.6634]

  [3.6730]
  + const std::string & machine, BuildStepStatus status, const std::string & errorMsg = "",

  + BuildID propagatedFrom = 0);
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 244
  [3.7389]→[3.6820:6911](∅→∅),[3.6820]→[3.6820:6911](∅→∅)
  − BuildStepStatus status, const string & errorMsg = "", BuildID propagatedFrom = 0);
  [3.7389]

  [3.6911]
  + const std::string & machine, BuildStepStatus status, const string & errorMsg = "",

  + BuildID propagatedFrom = 0);
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 359
  [3.8172]→[3.8172:8254](∅→∅)
  − BuildStepStatus status, const std::string & errorMsg, BuildID propagatedFrom)
  [3.8172]

  [3.8254]
  + const std::string & machine, BuildStepStatus status, const std::string & errorMsg, BuildID propagatedFrom)
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 365
  [3.115]→[3.8465:8654](∅→∅),[3.8465]→[3.8465:8654](∅→∅)
  − ("insert into BuildSteps (build, stepnr, type, drvPath, busy, startTime, system, status, propagatedFrom, errorMsg, stopTime) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)")
  [3.115]

  [3.116]
  + ("insert into BuildSteps (build, stepnr, type, drvPath, busy, startTime, system, status, propagatedFrom, errorMsg, stopTime, machine) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)")
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 370
  [3.343]→[3.343:390](∅→∅)
  − (startTime, status != bssBusy).exec();
  [3.343]

  [3.8996]
  + (startTime, status != bssBusy)

  + (machine, machine != "").exec();
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 383
  [3.9554]→[3.9354:9436](∅→∅),[3.9354]→[3.9354:9436](∅→∅)
  − BuildStepStatus status, const std::string & errorMsg, BuildID propagatedFrom)
  [3.9554]

  [3.9436]
  + const std::string & machine, BuildStepStatus status, const std::string & errorMsg, BuildID propagatedFrom)
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 388
  [3.413]→[3.9601:9757](∅→∅)
  − ("update BuildSteps set busy = 0, status = $1, propagatedFrom = $4, errorMsg = $5, startTime = $6, stopTime = $7 where build = $2 and stepnr = $3")
  [3.413]

  [3.414]
  + ("update BuildSteps set busy = 0, status = $1, propagatedFrom = $4, errorMsg = $5, startTime = $6, stopTime = $7, machine = $8 where build = $2 and stepnr = $3")
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 392
  [3.535]→[3.9758:9796](∅→∅)
  − (startTime)(stopTime).exec();
  [3.535]

  [3.9821]
  + (startTime)(stopTime)

  + (machine, machine != "").exec();
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 835
  [3.739]→[3.13301:13380](∅→∅),[3.13380]→[2.455:456](∅→∅)
  − stepNr = createBuildStep(txn, result.startTime, build, step, bssBusy);

  −
  [3.739]

  [2.456]
  + stepNr = createBuildStep(txn, result.startTime, build, step, machine->sshName, bssBusy);
• edit in src/hydra-queue-runner/hydra-queue-runner.cc at line 837
  [2.545]→[2.545:546](∅→∅)
  −
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 885
  [3.16177]→[3.13855:13955](∅→∅)
  − finishBuildStep(txn, result.startTime, result.stopTime, build->id, stepNr, bssSuccess);
  [3.16177]

  [3.16252]
  + finishBuildStep(txn, result.startTime, result.stopTime, build->id, stepNr, machine->sshName, bssSuccess);
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 895
  [3.16702]→[3.14053:14169](∅→∅)
  − finishBuildStep(txn, result.startTime, result.stopTime, build->id, stepNr, bssFailed, result.errorMsg);
  [3.16702]

  [3.16786]
  + finishBuildStep(txn, result.startTime, result.stopTime, build->id, stepNr, machine->sshName, bssFailed, result.errorMsg);
• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 899
  [3.16875]→[3.14170:14278](∅→∅)
  − createBuildStep(txn, result.stopTime, build2, step, bssFailed, result.errorMsg, build->id);
  [3.16875]

  [3.16969]
  + createBuildStep(txn, result.stopTime, build2, step, machine->sshName, bssFailed, result.errorMsg, build->id);