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Viewing changes to plugin/embedded_innodb/status_table_function.cc

  • Committer: Brian Aker
  • Date: 2010-04-16 18:34:36 UTC
  • mfrom: (1283.28.40)
  • Revision ID: brian@gaz-20100416183436-e1rr7divbn4rvghi
Merge Stewart.

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plugin/embedded_innodb/status_table_function.cc
 
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/*
 
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  Copyright (C) 2010 Stewart Smith
 
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  This program is free software; you can redistribute it and/or
 
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  modify it under the terms of the GNU General Public License
 
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  as published by the Free Software Foundation; either version 2
 
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  of the License, or (at your option) any later version.
 
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  This program is distributed in the hope that it will be useful,
 
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  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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  GNU General Public License for more details.
 
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  You should have received a copy of the GNU General Public License
 
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  along with this program; if not, write to the Free Software
 
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  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
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*/
 
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#include "config.h"
 
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#include "drizzled/plugin/table_function.h"
 
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#include "embedded_innodb-1.0/innodb.h"
 
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#include "status_table_function.h"
 
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using namespace std;
 
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using namespace drizzled;
 
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class LibInnoDBStatusTool : public drizzled::plugin::TableFunction
 
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{
 
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public:
 
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  LibInnoDBStatusTool();
 
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  LibInnoDBStatusTool(const char *table_arg) :
 
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    drizzled::plugin::TableFunction("data_dictionary", table_arg)
 
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  { }
 
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  ~LibInnoDBStatusTool() {}
 
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  class Generator : public drizzled::plugin::TableFunction::Generator
 
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  {
 
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  private:
 
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    uint32_t names_next;
 
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  public:
 
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    Generator(drizzled::Field **arg);
 
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    ~Generator();
 
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    bool populate();
 
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  };
 
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  LibInnoDBStatusTool::Generator *generator(drizzled::Field **arg)
 
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  {
 
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    return new Generator(arg);
 
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  }
 
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};
 
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static const char*      libinnodb_status_var_names[] = {
 
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  "read_req_pending",
 
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  "write_req_pending",
 
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  "fsync_req_pending",
 
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  "write_req_done",
 
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  "read_req_done",
 
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  "fsync_req_done",
 
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  "bytes_total_written",
 
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  "bytes_total_read",
 
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  "buffer_pool_current_size",
 
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  "buffer_pool_data_pages",
 
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  "buffer_pool_dirty_pages",
 
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  "buffer_pool_misc_pages",
 
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  "buffer_pool_free_pages",
 
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  "buffer_pool_read_reqs",
 
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  "buffer_pool_reads",
 
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  "buffer_pool_waited_for_free",
 
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  "buffer_pool_pages_flushed",
 
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  "buffer_pool_write_reqs",
 
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  "buffer_pool_total_pages",
 
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  "buffer_pool_pages_read",
 
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  "buffer_pool_pages_written",
 
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  "double_write_pages_written",
 
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  "double_write_invoked",
 
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  "log_buffer_slot_waits",
 
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  "log_write_reqs",
 
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  "log_write_flush_count",
 
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  "log_bytes_written",
 
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  "log_fsync_req_done",
 
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  "log_write_req_pending",
 
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  "log_fsync_req_pending",
 
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  "lock_row_waits",
 
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  "lock_row_waiting",
 
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  "lock_total_wait_time_in_secs",
 
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  "lock_wait_time_avg_in_secs",
 
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  "lock_max_wait_time_in_secs",
 
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  "row_total_read",
 
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  "row_total_inserted",
 
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  "row_total_updated",
 
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  "row_total_deleted",
 
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  "page_size",
 
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  "have_atomic_builtins",
 
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  NULL
 
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};
 
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LibInnoDBStatusTool::LibInnoDBStatusTool() :
 
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  plugin::TableFunction("DATA_DICTIONARY", "INNODB_STATUS")
 
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{
 
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  add_field("NAME");
 
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  add_field("VALUE", plugin::TableFunction::NUMBER);
 
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}
 
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LibInnoDBStatusTool::Generator::Generator(Field **arg) :
 
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  plugin::TableFunction::Generator(arg),
 
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  names_next(0)
 
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{
 
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}
 
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LibInnoDBStatusTool::Generator::~Generator()
 
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{
 
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}
 
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bool LibInnoDBStatusTool::Generator::populate()
 
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{
 
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  if (libinnodb_status_var_names[names_next] != NULL)
 
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  {
 
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    const char* config_name= libinnodb_status_var_names[names_next];
 
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    push(config_name);
 
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    ib_i64_t value;
 
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    ib_err_t err= ib_status_get_i64(config_name, &value);
 
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    assert(err == DB_SUCCESS);
 
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    push(value);
 
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    names_next++;
 
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    return true;
 
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  }
 
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  return false; // No more rows
 
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}
 
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static LibInnoDBStatusTool *status_tool;
 
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int status_table_function_initialize(drizzled::plugin::Context &context)
 
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{
 
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  status_tool= new(std::nothrow)LibInnoDBStatusTool();
 
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  context.add(status_tool);
 
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  return 0;
 
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}