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cs440-acg/ext/eigen/test/dynalloc.cpp

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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include "main.h"
+
+#if EIGEN_MAX_ALIGN_BYTES>0
+#define ALIGNMENT EIGEN_MAX_ALIGN_BYTES
+#else
+#define ALIGNMENT 1
+#endif
+
+typedef Matrix<float,8,1> Vector8f;
+
+void check_handmade_aligned_malloc()
+{
+  for(int i = 1; i < 1000; i++)
+  {
+    char *p = (char*)internal::handmade_aligned_malloc(i);
+    VERIFY(internal::UIntPtr(p)%ALIGNMENT==0);
+    // if the buffer is wrongly allocated this will give a bad write --> check with valgrind
+    for(int j = 0; j < i; j++) p[j]=0;
+    internal::handmade_aligned_free(p);
+  }
+}
+
+void check_aligned_malloc()
+{
+  for(int i = ALIGNMENT; i < 1000; i++)
+  {
+    char *p = (char*)internal::aligned_malloc(i);
+    VERIFY(internal::UIntPtr(p)%ALIGNMENT==0);
+    // if the buffer is wrongly allocated this will give a bad write --> check with valgrind
+    for(int j = 0; j < i; j++) p[j]=0;
+    internal::aligned_free(p);
+  }
+}
+
+void check_aligned_new()
+{
+  for(int i = ALIGNMENT; i < 1000; i++)
+  {
+    float *p = internal::aligned_new<float>(i);
+    VERIFY(internal::UIntPtr(p)%ALIGNMENT==0);
+    // if the buffer is wrongly allocated this will give a bad write --> check with valgrind
+    for(int j = 0; j < i; j++) p[j]=0;
+    internal::aligned_delete(p,i);
+  }
+}
+
+void check_aligned_stack_alloc()
+{
+  for(int i = ALIGNMENT; i < 400; i++)
+  {
+    ei_declare_aligned_stack_constructed_variable(float,p,i,0);
+    VERIFY(internal::UIntPtr(p)%ALIGNMENT==0);
+    // if the buffer is wrongly allocated this will give a bad write --> check with valgrind
+    for(int j = 0; j < i; j++) p[j]=0;
+  }
+}
+
+
+// test compilation with both a struct and a class...
+struct MyStruct
+{
+  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
+  char dummychar;
+  Vector8f avec;
+};
+
+class MyClassA
+{
+  public:
+    EIGEN_MAKE_ALIGNED_OPERATOR_NEW
+    char dummychar;
+    Vector8f avec;
+};
+
+template<typename T> void check_dynaligned()
+{
+  // TODO have to be updated once we support multiple alignment values
+  if(T::SizeAtCompileTime % ALIGNMENT == 0)
+  {
+    T* obj = new T;
+    VERIFY(T::NeedsToAlign==1);
+    VERIFY(internal::UIntPtr(obj)%ALIGNMENT==0);
+    delete obj;
+  }
+}
+
+template<typename T> void check_custom_new_delete()
+{
+  {
+    T* t = new T;
+    delete t;
+  }
+  
+  {
+    std::size_t N = internal::random<std::size_t>(1,10);
+    T* t = new T[N];
+    delete[] t;
+  }
+  
+#if EIGEN_MAX_ALIGN_BYTES>0
+  {
+    T* t = static_cast<T *>((T::operator new)(sizeof(T)));
+    (T::operator delete)(t, sizeof(T));
+  }
+  
+  {
+    T* t = static_cast<T *>((T::operator new)(sizeof(T)));
+    (T::operator delete)(t);
+  }
+#endif
+}
+
+void test_dynalloc()
+{
+  // low level dynamic memory allocation
+  CALL_SUBTEST(check_handmade_aligned_malloc());
+  CALL_SUBTEST(check_aligned_malloc());
+  CALL_SUBTEST(check_aligned_new());
+  CALL_SUBTEST(check_aligned_stack_alloc());
+
+  for (int i=0; i<g_repeat*100; ++i)
+  {
+    CALL_SUBTEST( check_custom_new_delete<Vector4f>() );
+    CALL_SUBTEST( check_custom_new_delete<Vector2f>() );
+    CALL_SUBTEST( check_custom_new_delete<Matrix4f>() );
+    CALL_SUBTEST( check_custom_new_delete<MatrixXi>() );
+  }
+  
+  // check static allocation, who knows ?
+  #if EIGEN_MAX_STATIC_ALIGN_BYTES
+  for (int i=0; i<g_repeat*100; ++i)
+  {
+    CALL_SUBTEST(check_dynaligned<Vector4f>() );
+    CALL_SUBTEST(check_dynaligned<Vector2d>() );
+    CALL_SUBTEST(check_dynaligned<Matrix4f>() );
+    CALL_SUBTEST(check_dynaligned<Vector4d>() );
+    CALL_SUBTEST(check_dynaligned<Vector4i>() );
+    CALL_SUBTEST(check_dynaligned<Vector8f>() );
+  }
+
+  {
+    MyStruct foo0;  VERIFY(internal::UIntPtr(foo0.avec.data())%ALIGNMENT==0);
+    MyClassA fooA;  VERIFY(internal::UIntPtr(fooA.avec.data())%ALIGNMENT==0);
+  }
+  
+  // dynamic allocation, single object
+  for (int i=0; i<g_repeat*100; ++i)
+  {
+    MyStruct *foo0 = new MyStruct();  VERIFY(internal::UIntPtr(foo0->avec.data())%ALIGNMENT==0);
+    MyClassA *fooA = new MyClassA();  VERIFY(internal::UIntPtr(fooA->avec.data())%ALIGNMENT==0);
+    delete foo0;
+    delete fooA;
+  }
+
+  // dynamic allocation, array
+  const int N = 10;
+  for (int i=0; i<g_repeat*100; ++i)
+  {
+    MyStruct *foo0 = new MyStruct[N];  VERIFY(internal::UIntPtr(foo0->avec.data())%ALIGNMENT==0);
+    MyClassA *fooA = new MyClassA[N];  VERIFY(internal::UIntPtr(fooA->avec.data())%ALIGNMENT==0);
+    delete[] foo0;
+    delete[] fooA;
+  }
+  #endif
+  
+}