fsp0space.h

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/** @file include/fsp0space.h
 General shared tablespace implementation.
 
 Created 2013-7-26 by Kevin Lewis
 *******************************************************/
 
#ifndef fsp0space_h
#define fsp0space_h
 
#include "fsp0file.h"
#include "fsp0fsp.h"
#include "fsp0types.h"
#include "univ.i"
#include "ut0new.h"
 
#include <vector>
 
/** Data structure that contains the information about shared tablespaces.
Currently this can be the system tablespace or a temporary table tablespace */
class Tablespace {
 public:
  typedef std::vector<Datafile, ut::allocator<Datafile>> files_t;
 
  /** Data file information - each Datafile can be accessed globally */
  files_t m_files;
 
  Tablespace()
      : m_files(),
        m_name(),
        m_space_id(SPACE_UNKNOWN),
        m_path(),
        m_flags(),
        m_autoextend_size(),
        m_ignore_read_only(false) {
    /* No op */
  }
 
  virtual ~Tablespace() {
    shutdown();
    ut_ad(m_files.empty());
    ut_ad(m_space_id == SPACE_UNKNOWN);
    if (m_name != nullptr) {
      ut::free(m_name);
      m_name = nullptr;
    }
    if (m_path != nullptr) {
      ut::free(m_path);
      m_path = nullptr;
    }
  }
 
  // Disable copying
  Tablespace(const Tablespace &);
  Tablespace &operator=(const Tablespace &);
 
  /** Set tablespace name
  @param[in]    name    tablespace name */
  void set_name(const char *name) {
    ut_ad(m_name == nullptr);
    m_name = mem_strdup(name);
    ut_ad(m_name != nullptr);
  }
 
  /** Get tablespace name
  @return tablespace name */
  const char *name() const { return (m_name); }
 
  /** Set tablespace path and filename members.
  @param[in]    path    where tablespace file(s) resides
  @param[in]    len     length of the file path */
  void set_path(const char *path, size_t len) {
    ut_ad(m_path == nullptr);
    m_path = mem_strdupl(path, len);
    ut_ad(m_path != nullptr);
 
    Fil_path::normalize(m_path);
  }
 
  /** Set tablespace path and filename members.
  @param[in]    path    where tablespace file(s) resides */
  void set_path(const char *path) { set_path(path, strlen(path)); }
 
  /** Get tablespace path
  @return tablespace path */
  const char *path() const { return (m_path); }
 
  /** Set the space id of the tablespace
  @param[in]    space_id         tablespace ID to set */
  void set_space_id(space_id_t space_id) {
    ut_ad(m_space_id == SPACE_UNKNOWN);
    m_space_id = space_id;
  }
 
  /** Get the space id of the tablespace
  @return m_space_id space id of the tablespace */
  space_id_t space_id() const { return (m_space_id); }
 
  /** Set the tablespace flags
  @param[in]    fsp_flags       tablespace flags */
  void set_flags(uint32_t fsp_flags) {
    ut_ad(fsp_flags_is_valid(fsp_flags));
    m_flags = fsp_flags;
  }
 
  /** Get the tablespace flags
  @return m_flags tablespace flags */
  uint32_t flags() const { return (m_flags); }
 
  /** Set Ignore Read Only Status for tablespace.
  @param[in]    read_only_status        read only status indicator */
  void set_ignore_read_only(bool read_only_status) {
    m_ignore_read_only = read_only_status;
  }
 
  /** Free the memory allocated by the Tablespace object */
  void shutdown();
 
  /** @return the sum of the file sizes of each Datafile */
  page_no_t get_sum_of_sizes() const {
    page_no_t sum = 0;
 
    for (files_t::const_iterator it = m_files.begin(); it != m_files.end();
         ++it) {
      sum += it->m_size;
    }
 
    return (sum);
  }
 
  /** Delete all the data files. */
  void delete_files();
 
  /** Check if two tablespaces have common data file names.
  @param[in]    other_space     Tablespace to check against this.
  @return true if they have the same data filenames and paths */
  bool intersection(const Tablespace *other_space);
 
  /** Use the ADD DATAFILE path to create a Datafile object and add
  it to the front of m_files. Parse the datafile path into a path
  and a basename with extension 'ibd'. This datafile_path provided
  may be an absolute or relative path, but it must end with the
  extension .ibd and have a basename of at least 1 byte.
 
  Set tablespace m_path member and add a Datafile with the filename.
  @param[in]    datafile_added  full path of the tablespace file. */
  dberr_t add_datafile(const char *datafile_added);
 
  /* Return a pointer to the first Datafile for this Tablespace
  @return pointer to the first Datafile for this Tablespace*/
  Datafile *first_datafile() {
    ut_a(!m_files.empty());
    return (&m_files.front());
  }
 
  /* Set the autoextend size for the tablespace */
  void set_autoextend_size(uint64_t size) { m_autoextend_size = size; }
 
  /* Get the autoextend size for the tablespace */
  uint64_t get_autoextend_size() const { return m_autoextend_size; }
 
 private:
  /**
  @param[in]    filename        Name to lookup in the data files.
  @return true if the filename exists in the data files */
  bool find(const char *filename);
 
  /** Note that the data file was found.
  @param[in,out] file   Data file object to set */
  void file_found(Datafile &file);
 
  /* DATA MEMBERS */
 
  /** Name of the tablespace. */
  char *m_name;
 
  /** Tablespace ID */
  space_id_t m_space_id;
 
  /** Path where tablespace files will reside, not including a filename.*/
  char *m_path;
 
  /** Tablespace flags */
  uint32_t m_flags;
 
  /** Autoextend size */
  uint64_t m_autoextend_size;
 
 protected:
  /** Ignore server read only configuration for this tablespace. */
  bool m_ignore_read_only;
};
 
#endif /* fsp0space_h */