polardbxengine/storage/perfschema/table_all_instr.cc

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  it under the terms of the GNU General Public License, version 2.0,
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  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

/**
  @file storage/perfschema/table_all_instr.cc
  Abstract tables for all instruments (implementation).
*/

#include "storage/perfschema/table_all_instr.h"

#include <stddef.h>

#include "my_thread.h"
#include "storage/perfschema/pfs_buffer_container.h"
#include "storage/perfschema/pfs_global.h"

ha_rows table_all_instr::get_row_count(void) {
  return global_mutex_container.get_row_count() +
         global_rwlock_container.get_row_count() +
         global_cond_container.get_row_count() +
         global_file_container.get_row_count() +
         global_socket_container.get_row_count();
}

table_all_instr::table_all_instr(const PFS_engine_table_share *share)
    : PFS_engine_table(share, &m_pos), m_pos(), m_next_pos() {}

void table_all_instr::reset_position(void) {
  m_pos.reset();
  m_next_pos.reset();
}

int table_all_instr::rnd_next(void) {
  PFS_mutex *mutex;
  PFS_rwlock *rwlock;
  PFS_cond *cond;
  PFS_file *file;
  PFS_socket *socket;

  for (m_pos.set_at(&m_next_pos); m_pos.has_more_view(); m_pos.next_view()) {
    switch (m_pos.m_index_1) {
      case pos_all_instr::VIEW_MUTEX: {
        PFS_mutex_iterator it = global_mutex_container.iterate(m_pos.m_index_2);
        mutex = it.scan_next(&m_pos.m_index_2);
        if (mutex != NULL) {
          m_next_pos.set_after(&m_pos);
          return make_mutex_row(mutex);
        }
      } break;
      case pos_all_instr::VIEW_RWLOCK: {
        PFS_rwlock_iterator it =
            global_rwlock_container.iterate(m_pos.m_index_2);
        rwlock = it.scan_next(&m_pos.m_index_2);
        if (rwlock != NULL) {
          m_next_pos.set_after(&m_pos);
          return make_rwlock_row(rwlock);
        }
      } break;
      case pos_all_instr::VIEW_COND: {
        PFS_cond_iterator it = global_cond_container.iterate(m_pos.m_index_2);
        cond = it.scan_next(&m_pos.m_index_2);
        if (cond != NULL) {
          m_next_pos.set_after(&m_pos);
          return make_cond_row(cond);
        }
      } break;
      case pos_all_instr::VIEW_FILE: {
        PFS_file_iterator it = global_file_container.iterate(m_pos.m_index_2);
        file = it.scan_next(&m_pos.m_index_2);
        if (file != NULL) {
          m_next_pos.set_after(&m_pos);
          return make_file_row(file);
        }
      } break;
      case pos_all_instr::VIEW_SOCKET: {
        PFS_socket_iterator it =
            global_socket_container.iterate(m_pos.m_index_2);
        socket = it.scan_next(&m_pos.m_index_2);
        if (socket != NULL) {
          m_next_pos.set_after(&m_pos);
          return make_socket_row(socket);
        }
      } break;
    }
  }

  return HA_ERR_END_OF_FILE;
}

int table_all_instr::rnd_pos(const void *pos) {
  PFS_mutex *mutex;
  PFS_rwlock *rwlock;
  PFS_cond *cond;
  PFS_file *file;
  PFS_socket *socket;

  set_position(pos);

  switch (m_pos.m_index_1) {
    case pos_all_instr::VIEW_MUTEX:
      mutex = global_mutex_container.get(m_pos.m_index_2);
      if (mutex != NULL) {
        return make_mutex_row(mutex);
      }
      break;
    case pos_all_instr::VIEW_RWLOCK:
      rwlock = global_rwlock_container.get(m_pos.m_index_2);
      if (rwlock != NULL) {
        return make_rwlock_row(rwlock);
      }
      break;
    case pos_all_instr::VIEW_COND:
      cond = global_cond_container.get(m_pos.m_index_2);
      if (cond != NULL) {
        return make_cond_row(cond);
      }
      break;
    case pos_all_instr::VIEW_FILE:
      file = global_file_container.get(m_pos.m_index_2);
      if (file != NULL) {
        return make_file_row(file);
      }
      break;
    case pos_all_instr::VIEW_SOCKET:
      socket = global_socket_container.get(m_pos.m_index_2);
      if (socket != NULL) {
        return make_socket_row(socket);
      }
      break;
  }

  return HA_ERR_RECORD_DELETED;
}

int table_all_instr::index_next(void) {
  for (m_pos.set_at(&m_next_pos); m_pos.has_more_view(); m_pos.next_view()) {
    if (!m_opened_index->match_view(m_pos.m_index_1)) {
      continue;
    }

    switch (m_pos.m_index_1) {
      case pos_all_instr::VIEW_MUTEX: {
        PFS_mutex *mutex;
        PFS_mutex_iterator it = global_mutex_container.iterate(m_pos.m_index_2);
        do {
          mutex = it.scan_next(&m_pos.m_index_2);
          if (mutex != NULL) {
            if (m_opened_index->match(mutex)) {
              if (!make_mutex_row(mutex)) {
                m_next_pos.set_after(&m_pos);
                return 0;
              }
            }
          }
        } while (mutex != NULL);
      } break;
      case pos_all_instr::VIEW_RWLOCK: {
        PFS_rwlock *rwlock;
        PFS_rwlock_iterator it =
            global_rwlock_container.iterate(m_pos.m_index_2);
        do {
          rwlock = it.scan_next(&m_pos.m_index_2);
          if (rwlock != NULL) {
            if (m_opened_index->match(rwlock)) {
              if (!make_rwlock_row(rwlock)) {
                m_next_pos.set_after(&m_pos);
                return 0;
              }
            }
          }
        } while (rwlock != NULL);
      } break;
      case pos_all_instr::VIEW_COND: {
        PFS_cond *cond;
        PFS_cond_iterator it = global_cond_container.iterate(m_pos.m_index_2);
        do {
          cond = it.scan_next(&m_pos.m_index_2);
          if (cond != NULL) {
            if (m_opened_index->match(cond)) {
              if (!make_cond_row(cond)) {
                m_next_pos.set_after(&m_pos);
                return 0;
              }
            }
          }
        } while (cond != NULL);
      } break;
      case pos_all_instr::VIEW_FILE: {
        PFS_file *file;
        PFS_file_iterator it = global_file_container.iterate(m_pos.m_index_2);
        do {
          file = it.scan_next(&m_pos.m_index_2);
          if (file != NULL) {
            if (m_opened_index->match(file)) {
              if (!make_file_row(file)) {
                m_next_pos.set_after(&m_pos);
                return 0;
              }
            }
          }
        } while (file != NULL);
      } break;
      case pos_all_instr::VIEW_SOCKET: {
        PFS_socket *socket;
        PFS_socket_iterator it =
            global_socket_container.iterate(m_pos.m_index_2);
        do {
          socket = it.scan_next(&m_pos.m_index_2);
          if (socket != NULL) {
            if (m_opened_index->match(socket)) {
              if (!make_socket_row(socket)) {
                m_next_pos.set_after(&m_pos);
                return 0;
              }
            }
          }
        } while (socket != NULL);
      } break;
    }
  }

  return HA_ERR_END_OF_FILE;
}