Method copyFromHostTensor

source/core/Tensor.cpp:171–185

bool Tensor::copyFromHostTensor(const Tensor* hostTensor) {
    auto bn = mDescribe->getBackend();
    if (nullptr == bn) {
        return false;
    }
    auto hostbn = hostTensor->mDescribe->getBackend();
    std::shared_ptr<Tensor> tmpTensor;
    if (nullptr != hostbn && hostbn->type() != bn->type() && hostbn->type() != MNN_FORWARD_CPU) {
        tmpTensor.reset(new Tensor(hostTensor, hostTensor->getDimensionType()));
        hostTensor->copyToHostTensor(tmpTensor.get());
        hostTensor = tmpTensor.get();
    }
    bn->onCopyBuffer(hostTensor, this);
    return true;
}

bool Tensor::copyToHostTensor(Tensor* hostTensor) const {
    auto bn = mDescribe->getBackend();