Class tensorflow::EnvWrapper
An implementation of Env that forwards all calls to another Env .
May be useful to clients who wish to override just part of the functionality of another Env .
Member Summary
tensorflow::EnvWrapper::EnvWrapper(Env *t)
- Initializes an EnvWrapper that delegates all calls to *t.
virtual tensorflow::EnvWrapper::~EnvWrapper()
Env* tensorflow::EnvWrapper::target() const
- Returns the target to which this Env forwards all calls.
Status tensorflow::EnvWrapper::NewRandomAccessFile(const string &f, RandomAccessFile **r) override
- Creates a brand new random access read-only file with the specified name.
Status tensorflow::EnvWrapper::NewWritableFile(const string &f, WritableFile **r) override
- Creates an object that writes to a new file with the specified name.
Status tensorflow::EnvWrapper::NewAppendableFile(const string &f, WritableFile **r) override
- Creates an object that either appends to an existing file, or writes to a new file (if the file does not exist to begin with).
bool tensorflow::EnvWrapper::FileExists(const string &f) override
- Returns true iff the named file exists.
Status tensorflow::EnvWrapper::GetChildren(const string &dir, std::vector< string > *r) override
- Stores in *result the names of the children of the specified directory. The names are relative to "dir".
Status tensorflow::EnvWrapper::DeleteFile(const string &f) override
- Deletes the named file.
Status tensorflow::EnvWrapper::CreateDir(const string &d) override
- Creates the specified directory.
Status tensorflow::EnvWrapper::DeleteDir(const string &d) override
- Deletes the specified directory.
Status tensorflow::EnvWrapper::GetFileSize(const string &f, uint64 *s) override
- Stores the size of fname in *file_size.
Status tensorflow::EnvWrapper::RenameFile(const string &s, const string &t) override
- Renames file src to target. If target already exists, it will be replaced.
uint64 tensorflow::EnvWrapper::NowMicros() override
- Returns the number of micro-seconds since some fixed point in time. Only useful for computing deltas of time.
void tensorflow::EnvWrapper::SleepForMicroseconds(int micros) override
- Sleeps/delays the thread for the prescribed number of micro-seconds.
Thread* tensorflow::EnvWrapper::StartThread(const ThreadOptions &thread_options, const string &name, std::function< void()> fn) override
- Returns a new thread that is running fn() and is identified (for debugging/performance-analysis) by "name".
Member Details
tensorflow::EnvWrapper::EnvWrapper(Env *t)
Initializes an EnvWrapper that delegates all calls to *t.
virtual tensorflow::EnvWrapper::~EnvWrapper()
Env* tensorflow::EnvWrapper::target() const
Returns the target to which this Env forwards all calls.
Status tensorflow::EnvWrapper::NewRandomAccessFile(const string &f, RandomAccessFile **r) override
Creates a brand new random access read-only file with the specified name.
On success, stores a pointer to the new file in result and returns OK. On failure stores NULL in result and returns non-OK. If the file does not exist, returns a non-OK status.
The returned file may be concurrently accessed by multiple threads.
Status tensorflow::EnvWrapper::NewWritableFile(const string &f, WritableFile **r) override
Creates an object that writes to a new file with the specified name.
Deletes any existing file with the same name and creates a new file. On success, stores a pointer to the new file in result and returns OK. On failure stores NULL in result and returns non-OK.
The returned file will only be accessed by one thread at a time.
Status tensorflow::EnvWrapper::NewAppendableFile(const string &f, WritableFile **r) override
Creates an object that either appends to an existing file, or writes to a new file (if the file does not exist to begin with).
On success, stores a pointer to the new file in result and returns OK. On failure stores NULL in result and returns non-OK.
The returned file will only be accessed by one thread at a time.
bool tensorflow::EnvWrapper::FileExists(const string &f) override
Returns true iff the named file exists.
Status tensorflow::EnvWrapper::GetChildren(const string &dir, std::vector< string > *r) override
Stores in *result the names of the children of the specified directory. The names are relative to "dir".
Original contents of *results are dropped.
Status tensorflow::EnvWrapper::DeleteFile(const string &f) override
Deletes the named file.
Status tensorflow::EnvWrapper::CreateDir(const string &d) override
Creates the specified directory.
Status tensorflow::EnvWrapper::DeleteDir(const string &d) override
Deletes the specified directory.
Status tensorflow::EnvWrapper::GetFileSize(const string &f, uint64 *s) override
Stores the size of fname in *file_size.
Status tensorflow::EnvWrapper::RenameFile(const string &s, const string &t) override
Renames file src to target. If target already exists, it will be replaced.
uint64 tensorflow::EnvWrapper::NowMicros() override
Returns the number of micro-seconds since some fixed point in time. Only useful for computing deltas of time.
void tensorflow::EnvWrapper::SleepForMicroseconds(int micros) override
Sleeps/delays the thread for the prescribed number of micro-seconds.
Thread* tensorflow::EnvWrapper::StartThread(const ThreadOptions &thread_options, const string &name, std::function< void()> fn) override
Returns a new thread that is running fn() and is identified (for debugging/performance-analysis) by "name".
Caller takes ownership of the result and must delete it eventually (the deletion will block until fn() stops running).