static void XCWaitForDebuggerIfNeeded()

in Shims/Shimulator/TestReporterShim/XCTestReporterShim.m [435:469]

32 lines of code
2 McCabe index (conditional complexity)


static void XCWaitForDebuggerIfNeeded()
{
  static dispatch_once_t onceToken;
  dispatch_once(&onceToken, ^{
    NSDictionary<NSString *, NSString *> *env = [[NSProcessInfo processInfo] environment];
    BOOL waitForDebugger = [env[kEnv_WaitForDebugger] isEqualToString:@"YES"];
    if (waitForDebugger) {
      int pid = [[NSProcessInfo processInfo] processIdentifier];
      NSString *beginMessage = [NSString stringWithFormat:@"Waiting for debugger to be attached to pid '%d' ...", pid];
      dispatch_sync(EventQueue(), ^{
        PrintJSON(EventDictionaryWithNameAndContent(
          kReporter_Events_BeginStatus,
          @{
            kReporter_BeginStatus_MessageKey : beginMessage,
            kReporter_BeginStatus_LevelKey : @"Info"
          }
        ));
      });

      // Halt process execution until a debugger is attached
      raise(SIGSTOP);

      NSString *endMessage = [NSString stringWithFormat:@"Debugger was successfully attached to pid '%d'.", pid];
      dispatch_sync(EventQueue(), ^{
        PrintJSON(EventDictionaryWithNameAndContent(
          kReporter_Events_EndStatus,
          @{
            kReporter_BeginStatus_MessageKey : endMessage,
            kReporter_BeginStatus_LevelKey : @"Info"
          }
        ));
      });
    }
  });
}