Does the memory you get back always end up as properly aligned data?Because of the nature of vector, it uses dynamic memory allocation, (operator new) to allocate this memory, and the default allocator for new is malloc. If you then dig into the documentation a bit, you will find the ...
__imp__invalid_parameter が関数"void * __cdecl std::_Allocate_manually_vector_aligned<struct std::_Default_allocate_traits>(unsigned __int64)"(??$_Allocate_manually_vector_aligned@U_Default_allocate_traits@std@@@std@@YAPEAX_K@Z)で参照されました。 エラーでは_Allocate_manually_vector_alig...
#include <vector> #include <execution> using std::random_device; using std::vector; using std::chrono::duration; using std::chrono::duration_cast; using std::chrono::high_resolution_clock; using std::milli; using std::random_device; using std::sort; using...
vector不仅仅是它保存的数据,它还是一个指向存储数据的堆分配内存的指针。因此,当你把向量放到你的小共享内存中时,你用placement-new放置的只是一堆内务数据和指向实际数据的指针。毕竟,sizeof是一个编译时常量,你难道一点也不好奇为什么它能在像vector这样的动态对象上工作吗?至于指针,指针只在应用程序的地址...
Manually create a Box from scratch by using the system allocator: #![feature(allocator_api, slice_ptr_get)] use std::alloc::{Allocator, Layout, System}; unsafe { let ptr = System.allocate(Layout::new::<i32>())?.as_mut_ptr() as *mut i32; // In general .write is required to av...
V701. Possible realloc() leak: when realloc() fails to allocate memory, original pointer is lost. Consider assigning realloc() to a temporary pointer. V702. Classes should always be derived from std::exception (and alike) as 'public'. V703. It is suspicious that the 'foo' field in deri...