inline NDArray::NDArray(const Shape &shape, const Context &context, bool delay_alloc) {
NDArrayHandle handle;
CHECK_EQ(MXNDArrayCreate(shape.data(), shape.ndim(), context.GetDeviceType(),
context.GetDeviceId(), delay_alloc, &handle),
0);
blob_ptr_ = std::make_shared<NDBlob>(handle);
}
inline NDArray::NDArray(const std::vector<mx_float> &data, const Shape &shape,
const Context &context) {
NDArrayHandle handle;
CHECK_EQ(MXNDArrayCreate(shape.data(), shape.ndim(), context.GetDeviceType(),
context.GetDeviceId(), false, &handle),
0);
MXNDArraySyncCopyFromCPU(handle, data.data(), shape.Size());
blob_ptr_ = std::make_shared<NDBlob>(handle);
}
JNIEXPORT jint JNICALL Java_ml_dmlc_mxnet_LibInfo_mxNDArrayCreate(JNIEnv *env, jobject obj,
jintArray shape,
jint ndim,
jint devType,
jint devId,
jint delayAlloc,
jobject ndArrayHandle) {
jint *shapeArr = env->GetIntArrayElements(shape, NULL);
NDArrayHandle out;
int ret = MXNDArrayCreate((mx_uint *)shapeArr, (mx_uint)ndim, devType, devId, delayAlloc, &out);
env->ReleaseIntArrayElements(shape, shapeArr, 0);
jclass ndClass = env->GetObjectClass(ndArrayHandle);
jfieldID ptr = env->GetFieldID(ndClass, "value", "J");
env->SetLongField(ndArrayHandle, ptr, (long)out);
return ret;
}