mirror of https://github.com/polybar/polybar.git
40 lines
1011 B
C++
40 lines
1011 B
C++
#pragma once
|
|
|
|
#include <cstdlib>
|
|
|
|
#include "common.hpp"
|
|
|
|
POLYBAR_NS
|
|
|
|
template <typename T>
|
|
using malloc_ptr_t = shared_ptr<T>;
|
|
|
|
namespace memory_util {
|
|
/**
|
|
* Create a shared pointer using malloc/free
|
|
*
|
|
* Generates a noexcept-type warning because the mangled name for
|
|
* malloc_ptr_t will change in C++17. This doesn't affect use because we have
|
|
* no public ABI, so we ignore it here.
|
|
* See also this SO answer: https://stackoverflow.com/a/46857525/5363071
|
|
*/
|
|
|
|
#pragma GCC diagnostic push
|
|
#pragma GCC diagnostic ignored "-Wnoexcept-type"
|
|
template <typename T, size_t Size = sizeof(T), typename Deleter = decltype(std::free)>
|
|
inline malloc_ptr_t<T> make_malloc_ptr(Deleter deleter = std::free) {
|
|
return malloc_ptr_t<T>(static_cast<T*>(calloc(1, Size)), deleter);
|
|
}
|
|
#pragma GCC diagnostic pop
|
|
|
|
/**
|
|
* Get the number of elements in T
|
|
*/
|
|
template <typename T>
|
|
inline auto countof(T& p) {
|
|
return sizeof(p) / sizeof(p[0]);
|
|
}
|
|
} // namespace memory_util
|
|
|
|
POLYBAR_NS_END
|