1 /*
2 Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2.0,
6 as published by the Free Software Foundation.
7
8 This program is also distributed with certain software (including
9 but not limited to OpenSSL) that is licensed under separate terms,
10 as designated in a particular file or component or in included license
11 documentation. The authors of MySQL hereby grant you an additional
12 permission to link the program and your derivative works with the
13 separately licensed software that they have included with MySQL.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License, version 2.0, for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 #ifndef OPENFILES_H
26 #define OPENFILES_H
27
28 #include <Vector.hpp>
29
30 #define JAM_FILE_ID 386
31
32
33 class OpenFiles
34 {
35 public:
OpenFiles()36 OpenFiles(){ }
37
38 /* Get a pointer to the file with id */
39 AsyncFile* find(Uint16 id) const;
40 /* Insert file with id */
41 bool insert(AsyncFile* file, Uint16 id);
42 /* Erase file with id */
43 bool erase(Uint16 id);
44 /* Get number of open files */
45 unsigned size();
46
47 Uint16 getId(unsigned i);
48 AsyncFile* getFile(unsigned i);
49
50
51 private:
52
53 class OpenFileItem {
54 public:
OpenFileItem()55 OpenFileItem(): m_file(NULL), m_id(0){}
56
57 AsyncFile* m_file;
58 Uint16 m_id;
59 };
60
61 Vector<OpenFileItem> m_files;
62 };
63
64
65 //*****************************************************************************
find(Uint16 id) const66 inline AsyncFile* OpenFiles::find(Uint16 id) const {
67 for (unsigned i = 0; i < m_files.size(); i++){
68 if (m_files[i].m_id == id){
69 return m_files[i].m_file;
70 }
71 }
72 return NULL;
73 }
74
75 //*****************************************************************************
erase(Uint16 id)76 inline bool OpenFiles::erase(Uint16 id){
77 for (unsigned i = 0; i < m_files.size(); i++){
78 if (m_files[i].m_id == id){
79 m_files.erase(i);
80 return true;
81 }
82 }
83 // Item was not found in list
84 return false;
85 }
86
87
88 //*****************************************************************************
insert(AsyncFile * file,Uint16 id)89 inline bool OpenFiles::insert(AsyncFile* file, Uint16 id){
90 // Check if file has already been opened
91 for (unsigned i = 0; i < m_files.size(); i++){
92 if(m_files[i].m_file == NULL)
93 continue;
94
95 if(strcmp(m_files[i].m_file->theFileName.c_str(),
96 file->theFileName.c_str()) == 0)
97 {
98 BaseString names;
99 names.assfmt("open: >%s< existing: >%s<",
100 file->theFileName.c_str(),
101 m_files[i].m_file->theFileName.c_str());
102 ERROR_SET(fatal, NDBD_EXIT_AFS_ALREADY_OPEN, names.c_str(),
103 "OpenFiles::insert()");
104 }
105 }
106
107 // Insert the file into vector
108 OpenFileItem openFile;
109 openFile.m_id = id;
110 openFile.m_file = file;
111 m_files.push_back(openFile);
112
113 return true;
114 }
115
116 //*****************************************************************************
getId(unsigned i)117 inline Uint16 OpenFiles::getId(unsigned i){
118 return m_files[i].m_id;
119 }
120
121 //*****************************************************************************
getFile(unsigned i)122 inline AsyncFile* OpenFiles::getFile(unsigned i){
123 return m_files[i].m_file;
124 }
125
126 //*****************************************************************************
size()127 inline unsigned OpenFiles::size(){
128 return m_files.size();
129 }
130
131
132 #undef JAM_FILE_ID
133
134 #endif
135