folly::gen::detail::FileReader Class Reference

#include <File-inl.h>

Inheritance diagram for folly::gen::detail::FileReader:

Public Member Functions
	FileReader (File file, std::unique_ptr< IOBuf > buffer)
template<class Body >
bool	apply (Body &&body) const
Public Member Functions inherited from folly::gen::GenImpl< ByteRange, FileReader >
bool	apply (Handler &&handler) const
void	foreach (Body &&body) const
Public Member Functions inherited from folly::gen::FBounded< Self >
const Self &	self () const
Self &	self ()

Static Public Attributes
static constexpr bool	infinite = false
Static Public Attributes inherited from folly::gen::GenImpl< ByteRange, FileReader >
static constexpr bool	infinite

Private Attributes
File	file_
std::unique_ptr< IOBuf >	buffer_

Additional Inherited Members
Public Types inherited from folly::gen::GenImpl< ByteRange, FileReader >
typedef ByteRange	ValueType
typedef std::decay< ByteRange >::type	StorageType
Protected Member Functions inherited from folly::gen::GenImpl< ByteRange, FileReader >
	GenImpl ()=default
	GenImpl (GenImpl &&)=default
	GenImpl (const GenImpl &)=default
GenImpl &	operator= (GenImpl &&)=default
GenImpl &	operator= (const GenImpl &)=default

Detailed Description

Definition at line 29 of file File-inl.h.

Constructor & Destructor Documentation

folly::gen::detail::FileReader::FileReader ( File  file, std::unique_ptr< IOBuf >  buffer  )

inline

Definition at line 31 of file File-inl.h.

References buffer_.

      : file_(std::move(file)), buffer_(std::move(buffer)) {
    buffer_->clear();
  }

Member Function Documentation

template<class Body >

bool folly::gen::detail::FileReader::apply ( Body &&  body ) const

inline

Definition at line 37 of file File-inl.h.

References buffer_, folly::File::fd(), file_, and fizz::detail::read().

                                {
    for (;;) {
      ssize_t n;
      do {
        n = ::read(file_.fd(), buffer_->writableTail(), buffer_->capacity());
      } while (n == -1 && errno == EINTR);
      if (n == -1) {
        throw std::system_error(errno, std::system_category(), "read failed");
      }
      if (n == 0) {
        return true;
      }
      if (!body(ByteRange(buffer_->tail(), size_t(n)))) {
        return false;
      }
    }
  }

Member Data Documentation

std::unique_ptr<IOBuf> folly::gen::detail::FileReader::buffer_

private

Definition at line 61 of file File-inl.h.

Referenced by apply(), folly::gen::detail::FileWriter::compose(), FileReader(), folly::gen::detail::FileWriter::FileWriter(), and folly::gen::detail::FileWriter::flushBuffer().

File folly::gen::detail::FileReader::file_

private

Definition at line 60 of file File-inl.h.

Referenced by apply(), folly::gen::detail::FileWriter::compose(), and folly::gen::detail::FileWriter::write().

constexpr bool folly::gen::detail::FileReader::infinite = false

static

Definition at line 57 of file File-inl.h.

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

• proxygen/folly/folly/gen/File-inl.h