问boost aligned_allocator对齐参数不影响实际对齐EN什么是对齐，以及为什么要对齐： 现代计算机中内存空间都是按照byte划分的，从理论上讲似乎对任何类型的变量的访问可以从任何地址开始，但实际情况是在访问特定变量的时候经常在特定的内存地址访问，这就需要各类型数据按照一定的规则在空间上排列，而不是顺序的一个
EN有一个Boost教程给出了大致如下的代码，并针对我的问题做了一些修改：本篇博文主要讲解2015年深度学习...
//1.对齐空间分配//alignment对齐边界 2的幂//size 字节数void* storage = boost::alignment::aligned_alloc(alignment, size);//释放空间boost::alignment::aligned_free(storage);//2.对齐分配器allocator//遵循over-alignment的分配std::vector<int128_t, boost::alignment::aligned_allocator<int128_t> > ...
4950voiddeallocate(void*pointer)51{52if(pointer ==storage_.address())53{54in_use_ =false;55}56else57{58::operatordelete(pointer);59}60}6162private:63//Storage space used for handler-based custom memory allocation.64boost::aligned_storage<1024>storage_;6566//Whether the handler-based custom ...
cout <<"USE fast_pool_allocator:\n"; boost::timer::auto_cpu_timer t1;for(inti =0; i < MAXLENGTH; ++i ) { vec1.push_back( i ); vec1.pop_back(); } } { cout <<"USE STL allocator:\n"; boost::timer::auto_cpu_timer t2;for(inti =0; i < MAXLENGTH; ++i ) ...
95 - typedef boost::unordered_map<int, Leaf, boost::hash<int>, std::equal_to<int>, Eigen::aligned_allocator<int> > HashMap; 97 + typedef std::unordered_map<int, Leaf, std::hash<int>, std::equal_to<int>, Eigen::aligned_allocator<std::pair<const int, Leaf>>> HashMap; 96 ...
boost::aligned_storage<1024> storage_; // Whether the handler-based custom allocation storage has been used. bool in_use_; }; template <typename Handler> class custom_alloc_handler { public: custom_alloc_handler(handler_allocator& a, Handler h) ...
boost::aligned_storage<1024> storage_; // Whether the handler-based custom allocation storage has been used. bool in_use_; }; template <typename Handler> class custom_alloc_handler { public: custom_alloc_handler(handler_allocator& a, Handler h) ...
#8468: Compile error on visual studio 2010/2012 using vector with custom allocator and aligned types #9332: "has_member_function_callable_with.hpp compile error on msvc-12.0". #9650: "intrusive list with stateful value traits". #9746: Modern Sun CC compiler detects error in intrusive ...
std::aligned_storage<1024> storage_; bool in_use_; }; template<typename Handler> class custom_alloc_handler { public: custom_alloc_handler(handler_allocator & a, Handler h) : allocator_(a), handler_(h){} //这个函数重置()运算符,使用可变参模板,调用handler_() ...