Commit | Line | Data |
---|---|---|
7b893819 AW |
1 | /* classes: h_files */ |
2 | ||
3 | #ifndef SCM_PROMISES_H | |
4 | #define SCM_PROMISES_H | |
5 | ||
6 | /* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2003,2004,2008,2009 | |
7 | * Free Software Foundation, Inc. | |
8 | * | |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public License | |
11 | * as published by the Free Software Foundation; either version 3 of | |
12 | * the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
22 | * 02110-1301 USA | |
23 | */ | |
24 | ||
25 | \f | |
26 | ||
27 | #include "libguile/__scm.h" | |
28 | ||
29 | \f | |
30 | ||
31 | /* {Promises} | |
32 | */ | |
33 | ||
34 | #define SCM_F_PROMISE_COMPUTED (1L << 0) | |
35 | #define SCM_PROMISE_COMPUTED_P(promise) \ | |
36 | (SCM_F_PROMISE_COMPUTED & SCM_SMOB_FLAGS (promise)) | |
37 | #define SCM_SET_PROMISE_COMPUTED(promise) \ | |
38 | SCM_SET_SMOB_FLAGS ((promise), SCM_F_PROMISE_COMPUTED) | |
39 | #define SCM_PROMISE_MUTEX SCM_SMOB_OBJECT_2 | |
40 | #define SCM_PROMISE_DATA SCM_SMOB_OBJECT | |
41 | #define SCM_SET_PROMISE_DATA SCM_SET_SMOB_OBJECT | |
42 | ||
43 | ||
44 | SCM_API scm_t_bits scm_tc16_promise; | |
45 | ||
46 | \f | |
47 | ||
48 | SCM_API SCM scm_make_promise (SCM thunk); | |
49 | SCM_API SCM scm_force (SCM x); | |
50 | SCM_API SCM scm_promise_p (SCM x); | |
51 | ||
52 | SCM_INTERNAL void scm_init_promises (void); | |
53 | ||
54 | ||
55 | #endif /* SCM_PROMISES_H */ | |
56 | ||
57 | /* | |
58 | Local Variables: | |
59 | c-file-style: "gnu" | |
60 | End: | |
61 | */ |