[REFACTOR] copy DMLC headers, move operator to example (apache#20)

Author: tqchen

nnvm/Makefile

@@ -1,15 +1,15 @@
 export LDFLAGS = -pthread -lm
 export CFLAGS =  -std=c++11 -Wall -O2 -msse2  -Wno-unknown-pragmas -funroll-loops\
-	 -Iinclude -Idmlc-core/include -fPIC
+	 -Iinclude -fPIC
 
 # specify tensor path
 .PHONY: clean all test lint doc cython cython3 cyclean
 
-all: lib/libnnvm.so lib/libnnvm.a cli_test
+all: lib/libnnvm.a lib/libnnvm_example.so
 
-SRC = $(wildcard src/*.cc src/*/*.cc example/*.cc)
+SRC = $(wildcard src/*.cc src/*/*.cc)
 ALL_OBJ = $(patsubst src/%.cc, build/%.o, $(SRC))
-ALL_DEP = $(filter-out build/test_main.o, $(ALL_OBJ))
+ALL_DEP = $(ALL_OBJ)
 
 include tests/cpp/unittest.mk
 
@@ -20,16 +20,14 @@ build/%.o: src/%.cc
 	$(CXX) $(CFLAGS) -MM -MT build/$*.o $< >build/$*.d
 	$(CXX) -c $(CFLAGS) -c $< -o $@
 
-lib/libnnvm.so: $(ALL_DEP)
-	@mkdir -p $(@D)
-	$(CXX) $(CFLAGS) -shared -o $@ $(filter %.o %.a, $^) $(LDFLAGS)
 
 lib/libnnvm.a: $(ALL_DEP)
 	@mkdir -p $(@D)
 	ar crv $@ $(filter %.o, $?)
 
-cli_test: $(ALL_DEP) build/test_main.o
-	$(CXX) $(CFLAGS)  -o $@ $(filter %.o %.a, $^) $(LDFLAGS)
+lib/libnnvm_example.so: example/src/operator.cc lib/libnnvm.a
+	@mkdir -p $(@D)
+	$(CXX) $(CFLAGS) -shared -o $@ $(filter %.cc, $^) $(LDFLAGS) -Wl,--whole-archive lib/libnnvm.a -Wl,--no-whole-archive
 
 cython:
 	cd python; python setup.py build_ext --inplace

nnvm/src/example/operator.cc renamed to nnvm/example/src/operator.cc

@@ -96,7 +96,7 @@ NNVM_REGISTER_OP(__add_symbol__)
 .set_num_inputs(2);
 
 NNVM_REGISTER_OP(exp)
-.describe("take exponmential")
+.describe("take exponential")
 .set_num_inputs(1)
 .attr("inplace_pair", std::make_pair(0, 0))
 .attr<FInferShape>("FInferShape", SameShape);

nnvm/include/dmlc/README

@@ -0,0 +1,2 @@
+This folder is synced from dmlc-core/include/dmlc
+Contains useful utility headers for the project.

nnvm/include/dmlc/any.h

@@ -0,0 +1,345 @@
+/*!
+ * Copyright (c) 2016 by Contributors
+ * \file any.h
+ * \brief Container to hold any data type.
+ */
+#ifndef DMLC_ANY_H_
+#define DMLC_ANY_H_
+
+// This code need c++11 to compile
+#include <typeinfo>
+#include <type_traits>
+#include <utility>
+#include <algorithm>
+
+#include "./base.h"
+#include "./logging.h"
+
+namespace dmlc {
+// forward declare any;
+class any;
+
+/*!
+ * Get a  reference to content stored in the any as type T.
+ * This will cause an error if
+ * T does not match the type stored.
+ * This function is not part of std::any standard.
+ *
+ * \param src The source source any container.
+ * \return The reference of content
+ * \tparam T The type of the value to be fetched.
+ */
+template<typename T>
+inline T& get(any& src);  // NOLINT(*)
+
+/*!
+ * Get the const reference content stored in the any as type T.
+ * This will cause an error if
+ * T does not match the type stored.
+ * This function is not part of std::any standard.
+ *
+ * \param src The source source any container.
+ * \return The reference of content
+ * \tparam T The type of the value to be fetched.
+ */
+template<typename T>
+inline const T& get(const any& src);
+
+/*!
+ * \brief An any class that is compatible to std::any in c++17.
+ *
+ * \code
+ *   dmlc::any a = std::string("mydear"), b = 1;
+ *   // get reference out and add it
+ *   dmlc::get<int>(b) += 1;
+ *   // a is now string
+ *   LOG(INFO) << dmlc::get<std::string>(a);
+ *   // a is now 2, the string stored will be properly destructed
+ *   a = std::move(b);
+ *   LOG(INFO) << dmlc::get<int>(a);
+ * \endcode
+ * \sa get
+ */
+class any {
+ public:
+  /*! \brief default constructor */
+  inline any() = default;
+  /*!
+   * \brief move constructor from another any
+   * \param other The other any to be moved
+   */
+  inline any(any&& other);  // NOLINT(*)
+  /*!
+   * \brief copy constructor
+   * \param other The other any to be copied
+   */
+  inline any(const any& other);  // NOLINT(*)
+  /*!
+   * \brief constructor from any types
+   * \param other The other types to be constructed into any.
+   * \tparam T The value type of other.
+   */
+  template<typename T>
+  inline any(T&& other);  // NOLINT(*)
+  /*! \brief destructor */
+  inline ~any();
+  /*!
+   * \brief assign operator from other
+   * \param other The other any to be copy or moved.
+   * \return self
+   */
+  inline any& operator=(any&& other);
+  /*!
+   * \brief assign operator from other
+   * \param other The other any to be copy or moved.
+   * \return self
+   */
+  inline any& operator=(const any& other);
+  /*!
+   * \brief assign operator from any type.
+   * \param other The other any to be copy or moved.
+   * \tparam T The value type of other.
+   * \return self
+   */
+  template<typename T>
+  inline any& operator=(T&& other);
+  /*!
+   * \return whether the container is empty.
+   */
+  inline bool empty() const;
+  /*!
+   * \return clear the content of container
+   */
+  inline void clear();
+  /*!
+   * swap current content with other
+   * \param other The other data to be swapped.
+   */
+  inline void swap(any& other); // NOLINT(*)
+  /*!
+   * \return The type_info about the stored type.
+   */
+  inline const std::type_info& type() const;
+
+ private:
+  //! \cond Doxygen_Suppress
+  // declare of helper class
+  template<typename T>
+  class TypeOnHeap;
+  template<typename T>
+  class TypeOnStack;
+  template<typename T>
+  class TypeInfo;
+  // size of stack space, it takes 32 bytes for one any type.
+  static const size_t kStack = sizeof(void*) * 3;
+  static const size_t kAlign = sizeof(void*);
+  // container use dynamic storage only when space runs lager
+  union Data {
+    // stack space
+    std::aligned_storage<kStack, kAlign>::type stack;
+    // pointer to heap space
+    void* pheap;
+  };
+  // type specific information
+  struct Type {
+    // destructor function
+    void (*destroy)(Data* data);
+    // copy constructor
+    void (*create_from_data)(Data* dst, const Data& src);
+    // the type info function
+    const std::type_info* ptype_info;
+  };
+  // constant to check if data can be stored on heap.
+  template<typename T>
+  struct data_on_stack {
+    static const bool value = alignof(T) <= kAlign && sizeof(T) <= kStack;
+  };
+  // declare friend with
+  template<typename T>
+  friend T& get(any& src);  // NOLINT(*)
+  template<typename T>
+  friend const T& get(const any& src);
+  // internal construct function
+  inline void construct(any&& other);
+  // internal construct function
+  inline void construct(const any& other);
+  // internal function to check if type is correct.
+  template<typename T>
+  inline void check_type() const;
+  // internal type specific information
+  const Type* type_{nullptr};
+  // internal data
+  Data data_;
+};
+
+template<typename T>
+inline any::any(T&& other) {
+  typedef typename std::decay<T>::type DT;
+  if (std::is_same<DT, any>::value) {
+    this->construct(std::forward<T>(other));
+  } else {
+    static_assert(std::is_copy_constructible<DT>::value,
+                  "Any can only hold value that is copy constructable");
+    type_ = TypeInfo<DT>::get_type();
+    if (data_on_stack<DT>::value) {
+      new (&(data_.stack)) DT(std::forward<T>(other));
+    } else {
+      data_.pheap = new DT(std::forward<T>(other));
+    }
+  }
+}
+
+inline any::any(any&& other) {
+  this->construct(std::move(other));
+}
+
+inline any::any(const any& other) {
+  this->construct(other);
+}
+
+inline void any::construct(any&& other) {
+  type_ = other.type_;
+  data_ = other.data_;
+  other.type_ = nullptr;
+}
+
+inline void any::construct(const any& other) {
+  type_ = other.type_;
+  if (type_ != nullptr) {
+    type_->create_from_data(&data_, other.data_);
+  }
+}
+
+inline any::~any() {
+  this->clear();
+}
+
+inline any& any::operator=(any&& other) {
+  any(std::move(other)).swap(*this);
+  return *this;
+}
+
+inline any& any::operator=(const any& other) {
+  any(other).swap(*this);
+  return *this;
+}
+
+template<typename T>
+inline any& any::operator=(T&& other) {
+  any(std::forward<T>(other)).swap(*this);
+  return *this;
+}
+
+inline void any::swap(any& other) { // NOLINT(*)
+  std::swap(type_, other.type_);
+  std::swap(data_, other.data_);
+}
+
+inline void any::clear() {
+  if (type_ != nullptr) {
+    if (type_->destroy != nullptr) {
+      type_->destroy(&data_);
+    }
+    type_ = nullptr;
+  }
+}
+
+inline bool any::empty() const {
+  return type_ == nullptr;
+}
+
+inline const std::type_info& any::type() const {
+  if (type_ != nullptr) {
+    return *(type_->ptype_info);
+  } else {
+    return typeid(void);
+  }
+}
+
+template<typename T>
+inline void any::check_type() const {
+  CHECK(type_ != nullptr)
+      << "The any container is empty";
+  CHECK(type_->ptype_info == &typeid(T))
+      << "The stored type mismatch"
+      << " stored=" << type_->ptype_info->name()
+      << " requested=" << typeid(T).name();
+}
+
+template<typename T>
+inline const T& get(const any& src) {
+  src.check_type<T>();
+  return *any::TypeInfo<T>::get_ptr(&(src.data_));
+}
+
+template<typename T>
+inline T& get(any& src) { // NOLINT(*)
+  src.check_type<T>();
+  return *any::TypeInfo<T>::get_ptr(&(src.data_));
+}
+
+template<typename T>
+class any::TypeOnHeap {
+ public:
+  inline static T* get_ptr(any::Data* data) {
+    return static_cast<T*>(data->pheap);
+  }
+  inline static const T* get_ptr(const any::Data* data) {
+    return static_cast<const T*>(data->pheap);
+  }
+  inline static void create_from_data(any::Data* dst, const any::Data& data) {
+    dst->pheap = new T(*get_ptr(&data));
+  }
+  inline static void destroy(Data* data) {
+    delete static_cast<T*>(data->pheap);
+  }
+};
+
+template<typename T>
+class any::TypeOnStack {
+ public:
+  inline static T* get_ptr(any::Data* data) {
+    return reinterpret_cast<T*>(&(data->stack));
+  }
+  inline static const T* get_ptr(const any::Data* data) {
+    return reinterpret_cast<const T*>(&(data->stack));
+  }
+  inline static void create_from_data(any::Data* dst, const any::Data& data) {
+    new (&(dst->stack)) T(*get_ptr(&data));
+  }
+  inline static void destroy(Data* data) {
+    T* dptr = reinterpret_cast<T*>(&(data->stack));
+    dptr->~T();
+  }
+};
+
+template<typename T>
+class any::TypeInfo
+    : public std::conditional<any::data_on_stack<T>::value,
+                              any::TypeOnStack<T>,
+                              any::TypeOnHeap<T> >::type {
+ public:
+  inline static const Type* get_type() {
+    static TypeInfo<T> tp;
+    return &(tp.type_);
+  }
+
+ private:
+  // local type
+  Type type_;
+  // constructor
+  TypeInfo() {
+    if (std::is_pod<T>::value) {
+      type_.destroy = nullptr;
+    } else {
+      type_.destroy = TypeInfo<T>::destroy;
+    }
+    type_.create_from_data = TypeInfo<T>::create_from_data;
+    type_.ptype_info = &typeid(T);
+  }
+};
+//! \endcond
+
+}  // namespace dmlc
+
+#endif  // DMLC_ANY_H_