leveldb::Env Class Reference

#include <env.h>

Inheritance diagram for leveldb::Env:

Public Member Functions
	Env ()
virtual	~Env ()
virtual Status	NewSequentialFile (const std::string &fname, SequentialFile **result)=0
virtual Status	NewRandomAccessFile (const std::string &fname, RandomAccessFile **result)=0
virtual Status	NewWritableFile (const std::string &fname, WritableFile **result)=0
virtual Status	NewAppendableFile (const std::string &fname, WritableFile **result)
virtual bool	FileExists (const std::string &fname)=0
virtual Status	GetChildren (const std::string &dir, std::vector< std::string > *result)=0
virtual Status	DeleteFile (const std::string &fname)=0
virtual Status	CreateDir (const std::string &dirname)=0
virtual Status	DeleteDir (const std::string &dirname)=0
virtual Status	GetFileSize (const std::string &fname, uint64_t *file_size)=0
virtual Status	RenameFile (const std::string &src, const std::string &target)=0
virtual Status	LockFile (const std::string &fname, FileLock **lock)=0
virtual Status	UnlockFile (FileLock *lock)=0
virtual void	Schedule (void(*function)(void *arg), void *arg)=0
virtual void	StartThread (void(*function)(void *arg), void *arg)=0
virtual Status	GetTestDirectory (std::string *path)=0
virtual Status	NewLogger (const std::string &fname, Logger **result)=0
virtual uint64_t	NowMicros ()=0
virtual void	SleepForMicroseconds (int micros)=0

Static Public Member Functions
static Env *	Default ()

Private Member Functions
	Env (const Env &)
void	operator= (const Env &)

Detailed Description

Definition at line 31 of file env.h.

Constructor & Destructor Documentation

Env() [1/2]

leveldb::Env::Env ( )

inline

Definition at line 33 of file env.h.

{ }

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~Env()

leveldb::Env::~Env ( )

virtual

Definition at line 9 of file env.cc.

          {
}

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Env() [2/2]

leveldb::Env::Env ( const Env &  )

private

Member Function Documentation

CreateDir()

virtual Status leveldb::Env::CreateDir ( const std::string &  dirname )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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Default()

Env * leveldb::Env::Default ( )

static

Definition at line 613 of file env_posix.cc.

                  {
  pthread_once(&once, InitDefaultEnv);
  return default_env;
}

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DeleteDir()

virtual Status leveldb::Env::DeleteDir ( const std::string &  dirname )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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DeleteFile()

virtual Status leveldb::Env::DeleteFile ( const std::string &  fname )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, leveldb::EnvWrapper, and leveldb::FaultInjectionTestEnv.

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FileExists()

virtual bool leveldb::Env::FileExists ( const std::string &  fname )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::EnvWrapper, and leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv.

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GetChildren()

virtual Status leveldb::Env::GetChildren ( const std::string &  dir, std::vector< std::string > *  result  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::EnvWrapper, and leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv.

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GetFileSize()

virtual Status leveldb::Env::GetFileSize ( const std::string &  fname, uint64_t *  file_size  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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GetTestDirectory()

virtual Status leveldb::Env::GetTestDirectory ( std::string *  path )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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LockFile()

virtual Status leveldb::Env::LockFile ( const std::string &  fname, FileLock **  lock  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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NewAppendableFile()

Status leveldb::Env::NewAppendableFile ( const std::string &  fname, WritableFile **  result  )

virtual

Reimplemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::EnvWrapper, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, leveldb::FaultInjectionTestEnv, and leveldb::test::ErrorEnv.

Definition at line 12 of file env.cc.

                                                                           {
  return Status::NotSupported("NewAppendableFile", fname);
}

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NewLogger()

virtual Status leveldb::Env::NewLogger ( const std::string &  fname, Logger **  result  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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NewRandomAccessFile()

virtual Status leveldb::Env::NewRandomAccessFile ( const std::string &  fname, RandomAccessFile **  result  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::EnvWrapper, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::SpecialEnv.

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NewSequentialFile()

virtual Status leveldb::Env::NewSequentialFile ( const std::string &  fname, SequentialFile **  result  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::EnvWrapper, and leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv.

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NewWritableFile()

virtual Status leveldb::Env::NewWritableFile ( const std::string &  fname, WritableFile **  result  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::EnvWrapper, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, leveldb::FaultInjectionTestEnv, leveldb::SpecialEnv, and leveldb::test::ErrorEnv.

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NowMicros()

virtual uint64_t leveldb::Env::NowMicros ( )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, and leveldb::EnvWrapper.

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operator=()

void leveldb::Env::operator= ( const Env &  )

private

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RenameFile()

virtual Status leveldb::Env::RenameFile ( const std::string &  src, const std::string &  target  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, leveldb::EnvWrapper, and leveldb::FaultInjectionTestEnv.

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Schedule()

virtual void leveldb::Env::Schedule ( void(*)(void *arg)  function, void *  arg  )

pure virtual

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SleepForMicroseconds()

virtual void leveldb::Env::SleepForMicroseconds ( int  micros )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, and leveldb::EnvWrapper.

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StartThread()

virtual void leveldb::Env::StartThread ( void(*)(void *arg)  function, void *  arg  )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv.

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UnlockFile()

virtual Status leveldb::Env::UnlockFile ( FileLock *  lock )

pure virtual

Implemented in leveldb::anonymous_namespace{env_posix.cc}::PosixEnv, leveldb::anonymous_namespace{memenv.cc}::InMemoryEnv, and leveldb::EnvWrapper.

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---

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

• include/leveldb/env.h
• util/env.cc
• util/env_posix.cc