FWStorage/StorageFactory/interface/IOFlags.h - master - githubmirror/cmssw

FWStorage/StorageFactory/interface/IOFlags.h

42 строки2 KB

Chris Jones

Move Utilities/StorageFactory to FWStorage/StorageFactory

10 дек 2025, 18:12

10 дек 2025, 18:12852ff34

#ifndef STORAGE_FACTORY_IO_FLAGS_H
#define STORAGE_FACTORY_IO_FLAGS_H

namespace edm::storage {

  namespace IOFlags {
    /// File open mode flags.
    enum OpenMode {
      OpenRead = 1,        /*< Open for read access.  */
      OpenWrite = 2,       /*< Open for write access.  */
      OpenNonBlock = 4,    /*< Open in non-blocking mode.
				    Neither the #open() nor any
				    subsequent operation on the
				    returned descriptor cause the
				    process to wait.  Applied to
				    opening a named pipe (a FIFO)
				    allows the pipe to be opened
				    without waiting for the other end
				    to be connected.  */
      OpenAppend = 8,      /*< Writes to the file should always
				    append to the end of the file.  */
      OpenUnbuffered = 16, /*< No write caching should be done on
				    this file; may result in blocking
				    the process until the data has
				    actually been written.  */
      OpenCreate = 32,     /*< Create the file if it does not exist.  */
      OpenExclusive = 64,  /*< With #ModeCreate specifies that
				    the creation should fali if the
				    file exists.  */
      OpenTruncate = 128,  /*< If the file exists, truncate it to
				    zero size.  */
      OpenNotCTTY = 256,   /*< If the specified file is a
				    terminal device, do not make it
				    the controlling terminal for the
				    process even if the process does
				    not have one yet.  */
      OpenWrap = 512       /*< Wrap the file if at all possible
				    with a local file.  */
    };
  }  // namespace IOFlags
}  // namespace edm::storage
#endif  // STORAGE_FACTORY_IO_FLAGS_H