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996
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1 /* -*- mode: C; coding: utf-8; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*-
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2 *
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3 * cfunge - A standard-conforming Befunge93/98/109 interpreter in C.
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4 * Copyright (C) 2008 Arvid Norlander <anmaster AT tele2 DOT se>
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5 *
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6 * This program is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at the proxy's option) any later version. Arvid Norlander is a
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10 * proxy who can decide which future versions of the GNU General Public
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11 * License can be used.
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12 *
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13 * This program is distributed in the hope that it will be useful,
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14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 * GNU General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 // This file does not come from libght, however this code is for libght
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23 // exclusively.
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24
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25
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26 /**
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27 * @file
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28 * Mempools are used for allocating Funge-space s_hash_entry.
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29 * Since cfunge is single-threaded they are static, and have no locking.
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30 *
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31 * For implementation details see comments in cfunge_mempool.c.
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32 */
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33
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34 #ifndef FUNGE_HAD_LIB_CFUNGE_MEMPOOL_H
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35 #define FUNGE_HAD_LIB_CFUNGE_MEMPOOL_H
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36
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37 #include "../../src/global.h"
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38 #include "../../src/funge-space/funge-space.h"
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39
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40 #include "ght_hash_table.h"
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41
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42 #define CF_MEMPOOL_FUNCPROT(m_variant, m_rettype, m_funcname, m_args, m_attrs) \
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43 m_attrs m_rettype cf_mempool_ ## m_variant ## _ ## m_funcname m_args
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44
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45 #define CF_MEMPOOL_DECLARE_FUNCS(m_variant, m_datatype) \
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46 CF_MEMPOOL_FUNCPROT(m_variant, bool, setup, (void), FUNGE_ATTR_FAST); \
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47 CF_MEMPOOL_FUNCPROT(m_variant, void, teardown, (void), FUNGE_ATTR_FAST); \
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48 CF_MEMPOOL_FUNCPROT(m_variant, m_datatype *, alloc, (void), FUNGE_ATTR_FAST FUNGE_ATTR_WARN_UNUSED FUNGE_ATTR_MALLOC); \
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49 CF_MEMPOOL_FUNCPROT(m_variant, void, free, (m_datatype *ptr), FUNGE_ATTR_FAST);
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50
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51
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52 #include <stdbool.h>
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53
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54 #if 0
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55 typedef struct s_hash_entry memorypool_data;
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56
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57 /**
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58 * Set up the memory pools. Used at program start.
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59 * @return True if successful, otherwise false.
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60 */
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61 FUNGE_ATTR_FAST
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62 bool mempool_setup(void);
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63
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64 /**
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65 * Tear down the memory pools. Used at program exit.
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66 */
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67 FUNGE_ATTR_FAST
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68 void mempool_teardown(void);
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69
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70 /**
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71 * Get a memorypool_data block from the memory pool.
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72 * @return A pointer to a memorypool_data, or NULL if allocation failed.
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73 */
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74 FUNGE_ATTR_FAST FUNGE_ATTR_WARN_UNUSED FUNGE_ATTR_MALLOC
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75 memorypool_data *mempool_alloc(void);
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76
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77 /**
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78 * Free a block, returning it to the memory pool.
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79 * @param ptr Pointer to memory block allocated with mempool_alloc.
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80 */
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81 FUNGE_ATTR_FAST
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82 void mempool_free(memorypool_data *ptr);
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83 #endif
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84
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85 CF_MEMPOOL_DECLARE_FUNCS(fspace, struct s_fspace_hash_entry)
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86 #ifdef CFUN_EXACT_BOUNDS
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87 CF_MEMPOOL_DECLARE_FUNCS(fspacecount, struct s_fspacecount_hash_entry)
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88 #endif
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89
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90 #undef CF_MEMPOOL_FUNCPROT
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91 #undef CF_MEMPOOL_DECLARE_FUNCS
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92
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93 #ifdef CF_GHT_INTERNAL
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94 # define CF_MEMPOOL_FUNC_INTERN(m_variant, m_funcname) \
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95 cf_mempool_ ## m_variant ## _ ## m_funcname
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96 # define CF_MEMPOOL_FUNC(m_variant, m_funcname) \
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97 CF_MEMPOOL_FUNC_INTERN(m_variant, m_funcname)
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98 #endif
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99
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100 #endif
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