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Minimal test - lines (30, 77)

Code

namespace TestThreadPoolListener {
static nsIThread** gCreatedThreadList = nullptr;
static nsIThread** gShutDownThreadList = nullptr;

static ReentrantMonitor* gReentrantMonitor = nullptr;

static bool gAllRunnablesPosted = false;
static bool gAllThreadsCreated = false;
static bool gAllThreadsShutDown = false;

class Listener final : public nsIThreadPoolListener {
  ~Listener() = default;

 public:
  NS_DECL_THREADSAFE_ISUPPORTS
  NS_DECL_NSITHREADPOOLLISTENER
};

NS_IMPL_ISUPPORTS(Listener, nsIThreadPoolListener)

NS_IMETHODIMP
Listener::OnThreadCreated() {
  nsCOMPtr current(do_GetCurrentThread());
  EXPECT_TRUE(current) << "Couldn't get current thread!";

  ReentrantMonitorAutoEnter mon(*gReentrantMonitor);

  while (!gAllRunnablesPosted) {
    mon.Wait();
  }

  for (uint32_t i = 0; i < NUMBER_OF_THREADS; i++) {
    nsIThread* thread = gCreatedThreadList[i];
    EXPECT_NE(thread, current) << "Saw the same thread twice!";

    if (!thread) {
      gCreatedThreadList[i] = current;
      if (i == (NUMBER_OF_THREADS - 1)) {
        gAllThreadsCreated = true;
        mon.NotifyAll();
      }
      return NS_OK;
    }
  }

  EXPECT_TRUE(false) << "Too many threads!";
  return NS_ERROR_FAILURE;
}

Minimal test - lines (41, 41)

Code

  ~Listener() = default;