smash::FileDeleter Struct Reference

#include <file.h>

FileDeleter is the deleter class for std::unique_ptr of std::FILE.

std::unique_ptr takes a second template argument which determines what happens when the resource it holds needs to be freed. The default implementation calls delete. For std::FILE the resource needs to be freed with a call to std::fclose instead. Therefore FilePtr requires a custom deleter class to correctly free the resource.

Definition at line 34 of file file.h.

Public Member Functions
constexpr	FileDeleter ()=default
	The class has no members, so this is a noop. More...
void	operator() (std::FILE *f) const
	Frees the std::FILE resource if it is non-zero. More...

Constructor & Destructor Documentation

FileDeleter()

constexpr smash::FileDeleter::FileDeleter ( )

constexprdefault

The class has no members, so this is a noop.

Member Function Documentation

operator()()

void smash::FileDeleter::operator() ( std::FILE *  f ) const

inline

Frees the std::FILE resource if it is non-zero.

Parameters

[in]

f

File resource.

Exceptions

runtime_error

if the file could not get closed.

Definition at line 43 of file file.h.

                                    {
    if (f == nullptr) {
      return;
    }
    if (0 != std::fclose(f)) {
      throw std::runtime_error(std::strerror(errno));
    }
  }

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The documentation for this struct was generated from the following file:

• src/include/smash/file.h