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6b468ba449
futures. For fine-grained threading this lifts performance to another level. We can now use parallelization in inner loops of Guile programs without impossible overhead.
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/* classes: h_files */
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#ifndef SCM_FUTURES_H
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#define SCM_FUTURES_H
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/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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#include "libguile/threads.h"
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typedef struct scm_t_future {
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SCM data;
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scm_t_mutex mutex;
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scm_t_cond cond;
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int status;
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int die_p;
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} scm_t_future;
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#define SCM_FUTURE_DEAD 0
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#define SCM_FUTURE_SIGNAL_ME -1
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#define SCM_FUTURE_COMPUTING 1
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#define SCM_FUTURE_TASK_ASSIGNED 2
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#define SCM_VALIDATE_FUTURE(pos, obj) \
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SCM_ASSERT_TYPE (SCM_TYP16_PREDICATE (scm_tc16_future, obj), \
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obj, pos, FUNC_NAME, "future");
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#define SCM_FUTURE(future) ((scm_t_future *) SCM_CELL_WORD_2 (future))
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#define SCM_FUTURE_MUTEX(future) (&SCM_FUTURE (future)->mutex)
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#define SCM_FUTURE_COND(future) (&SCM_FUTURE (future)->cond)
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#define SCM_FUTURE_STATUS(future) (SCM_FUTURE (future)->status)
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#define SCM_SET_FUTURE_STATUS(future, x) \
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do { SCM_FUTURE (future)->status = (x); } while (0)
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#define SCM_FUTURE_ALIVE_P(future) (SCM_FUTURE_STATUS (future))
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#define SCM_FUTURE_DATA(future) (SCM_FUTURE (future)->data)
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#define SCM_SET_FUTURE_DATA(future, x) \
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do { SCM_FUTURE (future)->data = (x); } while (0)
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#define SCM_FUTURE_NEXT SCM_CELL_OBJECT_1
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#define SCM_FUTURE_NEXTLOC(x) ((SCM *) SCM_CELL_WORD_LOC ((x), 1))
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#define SCM_SET_FUTURE_NEXT SCM_SET_CELL_OBJECT_1
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SCM_API scm_t_bits scm_tc16_future;
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extern SCM *scm_loc_sys_thread_handler;
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SCM_API SCM scm_i_make_future (SCM thunk);
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SCM_API SCM scm_make_future (SCM thunk);
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SCM_API SCM scm_future_ref (SCM future);
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void scm_init_futures (void);
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#endif /* SCM_FUTURES_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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