Drizzled Public API Documentation

lock.h
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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3  *
4  * Copyright (C) 2008 Sun Microsystems, Inc.
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6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #pragma once
21 
22 #include <vector>
23 #include <drizzled/thr_lock.h>
24 #include <drizzled/locking/global.h>
25 
26 namespace drizzled {
27 
29 {
30 public:
31  Table **getTable()
32  {
33  return &table[0];
34  }
35 
36  THR_LOCK_DATA **getLocks()
37  {
38  return &locks[0];
39  }
40 
41  size_t sizeTable() const
42  {
43  return table.size();
44  }
45 
46  void resizeTable(size_t arg)
47  {
48  table.resize(arg);
49  }
50 
51  size_t sizeLock() const
52  {
53  return lock_count;
54  }
55 
56  void resetLock()
57  {
58  lock_count= 0;
59  }
60 
61  void setLock(size_t arg)
62  {
63  lock_count= arg;
64  }
65 
66  void reset(void);
67  void unlock(uint32_t count);
68 
69  DrizzleLock(size_t table_count_arg)
70  {
71  table.resize(table_count_arg);
72  lock_count= table_count_arg * 2;
73  locks.resize(lock_count);
74  }
75 
76 private:
77  uint32_t lock_count;
78 
79  std::vector<Table *> table;
80  std::vector<THR_LOCK_DATA *> locks;
81  std::vector<THR_LOCK_DATA *> copy_of;
82 };
83 
84 /* lockTables() and open_table() flags bits */
85 #define DRIZZLE_LOCK_IGNORE_GLOBAL_READ_LOCK 0x0001
86 #define DRIZZLE_LOCK_IGNORE_FLUSH 0x0002
87 #define DRIZZLE_LOCK_NOTIFY_IF_NEED_REOPEN 0x0004
88 #define DRIZZLE_OPEN_TEMPORARY_ONLY 0x0008
89 
90 } /* namespace drizzled */
91