leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile Class Reference

Inheritance diagram for leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile:

Collaboration diagram for leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile:

Public Member Functions
	PosixSequentialFile (const std::string &fname, FILE *f)
virtual	~PosixSequentialFile ()
virtual Status	Read (size_t n, Slice *result, char *scratch)
virtual Status	Skip (uint64_t n)
Public Member Functions inherited from leveldb::SequentialFile
	SequentialFile ()
virtual	~SequentialFile ()

Private Attributes
std::string	filename_
FILE *	file_

Detailed Description

Definition at line 35 of file env_posix.cc.

Constructor & Destructor Documentation

PosixSequentialFile()

leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile::PosixSequentialFile ( const std::string &  fname, FILE *  f  )

inline

Definition at line 41 of file env_posix.cc.

      : filename_(fname), file_(f) { }

~PosixSequentialFile()

virtual leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile::~PosixSequentialFile ( )

inlinevirtual

Definition at line 43 of file env_posix.cc.

{ fclose(file_); }

Member Function Documentation

Read()

virtual Status leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile::Read ( size_t  n, Slice *  result, char *  scratch  )

inlinevirtual

Implements leveldb::SequentialFile.

Definition at line 45 of file env_posix.cc.

                                                              {
    Status s;
    size_t r = fread_unlocked(scratch, 1, n, file_);
    *result = Slice(scratch, r);
    if (r < n) {
      if (feof(file_)) {
        // We leave status as ok if we hit the end of the file
      } else {
        // A partial read with an error: return a non-ok status
        s = IOError(filename_, errno);
      }
    }
    return s;
  }

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Skip()

virtual Status leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile::Skip ( uint64_t  n )

inlinevirtual

Implements leveldb::SequentialFile.

Definition at line 60 of file env_posix.cc.

                                  {
    if (fseek(file_, n, SEEK_CUR)) {
      return IOError(filename_, errno);
    }
    return Status::OK();
  }

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Member Data Documentation

file_

FILE* leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile::file_

private

Definition at line 38 of file env_posix.cc.

filename_

std::string leveldb::anonymous_namespace{env_posix.cc}::PosixSequentialFile::filename_

private

Definition at line 37 of file env_posix.cc.

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

• util/env_posix.cc