Function InitHostDeviceVector

tests/cpp/plugin/test_sycl_host_device_vector.cc:17–40

namespace {

void InitHostDeviceVector(size_t n, DeviceOrd device, HostDeviceVector<int> *v) {
  // create the vector
  v->SetDevice(device);
  v->Resize(n);

  ASSERT_EQ(v->Size(), n);
  ASSERT_EQ(v->Device(), device);
  // ensure that the device have read-write access
  ASSERT_TRUE(v->DeviceCanRead());
  ASSERT_TRUE(v->DeviceCanWrite());
  // ensure that the host has no access
  ASSERT_FALSE(v->HostCanRead());
  ASSERT_FALSE(v->HostCanWrite());

  // fill in the data on the host
  std::vector<int>& data_h = v->HostVector();
  // ensure that the host has full access, while the device have none
  ASSERT_TRUE(v->HostCanRead());
  ASSERT_TRUE(v->HostCanWrite());
  ASSERT_FALSE(v->DeviceCanRead());
  ASSERT_FALSE(v->DeviceCanWrite());
  ASSERT_EQ(data_h.size(), n);
  std::iota(data_h.begin(), data_h.end(), 0);
}

void PlusOne(HostDeviceVector<int> *v) {
  auto device = v->Device();