DCacheAdaptor/interface/DCacheFile.h

0001 #ifndef DCACHE_ADAPTOR_DCACHE_FILE_H
0002 #define DCACHE_ADAPTOR_DCACHE_FILE_H
0003
0004 #include "Utilities/StorageFactory/interface/Storage.h"
0005 #include "Utilities/StorageFactory/interface/IOFlags.h"
0006 #include <string>
0007
0008 namespace edm::storage {
0009   class DCacheFile : public Storage {
0010   public:
0011     DCacheFile(void);
0012     DCacheFile(IOFD fd);
0013     DCacheFile(const char *name, int flags = IOFlags::OpenRead, int perms = 0666);
0014     DCacheFile(const std::string &name, int flags = IOFlags::OpenRead, int perms = 0666);
0015     ~DCacheFile(void) override;
0016
0017     virtual void create(const char *name, bool exclusive = false, int perms = 0666);
0018     virtual void create(const std::string &name, bool exclusive = false, int perms = 0666);
0019     virtual void open(const char *name, int flags = IOFlags::OpenRead, int perms = 0666);
0020     virtual void open(const std::string &name, int flags = IOFlags::OpenRead, int perms = 0666);
0021
0022     using Storage::position;
0023     using Storage::read;
0024     using Storage::write;
0025
0026     IOSize read(void *into, IOSize n) override;
0027     IOSize readv(IOBuffer *into, IOSize buffers) override;
0028     IOSize readv(IOPosBuffer *into, IOSize buffers) override;
0029     IOSize write(const void *from, IOSize n) override;
0030
0031     IOOffset position(IOOffset offset, Relative whence = SET) override;
0032     void resize(IOOffset size) override;
0033
0034     void close(void) override;
0035     virtual void abort(void);
0036
0037   private:
0038     IOFD m_fd;
0039     bool m_close;
0040     std::string m_name;
0041   };
0042 }  // namespace edm::storage
0043 #endif  // DCACHE_ADAPTOR_DCACHE_FILE_H