| 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 | */ |