1 /*
2  * NonGenerativeRTDs.h - Storage for nongenerative records.
3  *
4  *   Copyright (c) 2010  Higepon(Taro Minowa)  <higepon@users.sourceforge.jp>
5  *
6  *   Redistribution and use in source and binary forms, with or without
7  *   modification, are permitted provided that the following conditions
8  *   are met:
9  *
10  *   1. Redistributions of source code must retain the above copyright
11  *      notice, this list of conditions and the following disclaimer.
12  *
13  *   2. Redistributions in binary form must reproduce the above copyright
14  *      notice, this list of conditions and the following disclaimer in the
15  *      documentation and/or other materials provided with the distribution.
16  *
17  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
23  *   TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24  *   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25  *   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27  *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  *
29  *  $Id: RecordTypeDescriptor.h 261 2008-07-25 06:16:44Z higepon $
30  */
31 
32 #ifndef SCHEME_NONGENERATIVE_RTDS_
33 #define SCHEME_NONGENERATIVE_RTDS_
34 
35 #include "scheme.h"
36 
37 namespace scheme {
38 
39 class NonGenerativeRTDs EXTEND_GC
40 {
41 public:
lookup(Object uid)42     static Object lookup(Object uid)
43     {
44         mutex_.lock();
45         ObjectMap::const_iterator found = nonGenerativeRTDs_.find(uid);
46         if (found == nonGenerativeRTDs_.end()) {
47             mutex_.unlock();
48             return Object::False;
49         } else {
50             mutex_.unlock();
51             return found->second;
52         }
53     }
54 
add(Object uid,Object rtd)55     static void add(Object uid, Object rtd)
56     {
57         MOSH_ASSERT(rtd.isRecordTypeDescriptor());
58         mutex_.lock();
59         nonGenerativeRTDs_[uid] = rtd;
60         mutex_.unlock();
61     }
62 
63 private:
64    static ObjectMap nonGenerativeRTDs_;
65    static Mutex mutex_;
66 };
67 
68 } // namespace scheme
69 
70 #endif // SCHEME_NONGENERATIVE_RTDS_
71