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diff interps/cfunge/cfunge-src/lib/libghthash/cfunge_mempool.h @ 996:859f9b4339e6
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author | HackBot |
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date | Sun, 09 Dec 2012 19:30:08 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/interps/cfunge/cfunge-src/lib/libghthash/cfunge_mempool.h Sun Dec 09 19:30:08 2012 +0000 @@ -0,0 +1,100 @@ +/* -*- mode: C; coding: utf-8; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- + * + * cfunge - A standard-conforming Befunge93/98/109 interpreter in C. + * Copyright (C) 2008 Arvid Norlander <anmaster AT tele2 DOT se> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at the proxy's option) any later version. Arvid Norlander is a + * proxy who can decide which future versions of the GNU General Public + * License can be used. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +// This file does not come from libght, however this code is for libght +// exclusively. + + +/** + * @file + * Mempools are used for allocating Funge-space s_hash_entry. + * Since cfunge is single-threaded they are static, and have no locking. + * + * For implementation details see comments in cfunge_mempool.c. + */ + +#ifndef FUNGE_HAD_LIB_CFUNGE_MEMPOOL_H +#define FUNGE_HAD_LIB_CFUNGE_MEMPOOL_H + +#include "../../src/global.h" +#include "../../src/funge-space/funge-space.h" + +#include "ght_hash_table.h" + +#define CF_MEMPOOL_FUNCPROT(m_variant, m_rettype, m_funcname, m_args, m_attrs) \ + m_attrs m_rettype cf_mempool_ ## m_variant ## _ ## m_funcname m_args + +#define CF_MEMPOOL_DECLARE_FUNCS(m_variant, m_datatype) \ + CF_MEMPOOL_FUNCPROT(m_variant, bool, setup, (void), FUNGE_ATTR_FAST); \ + CF_MEMPOOL_FUNCPROT(m_variant, void, teardown, (void), FUNGE_ATTR_FAST); \ + CF_MEMPOOL_FUNCPROT(m_variant, m_datatype *, alloc, (void), FUNGE_ATTR_FAST FUNGE_ATTR_WARN_UNUSED FUNGE_ATTR_MALLOC); \ + CF_MEMPOOL_FUNCPROT(m_variant, void, free, (m_datatype *ptr), FUNGE_ATTR_FAST); + + +#include <stdbool.h> + +#if 0 +typedef struct s_hash_entry memorypool_data; + +/** + * Set up the memory pools. Used at program start. + * @return True if successful, otherwise false. + */ +FUNGE_ATTR_FAST +bool mempool_setup(void); + +/** + * Tear down the memory pools. Used at program exit. + */ +FUNGE_ATTR_FAST +void mempool_teardown(void); + +/** + * Get a memorypool_data block from the memory pool. + * @return A pointer to a memorypool_data, or NULL if allocation failed. + */ +FUNGE_ATTR_FAST FUNGE_ATTR_WARN_UNUSED FUNGE_ATTR_MALLOC +memorypool_data *mempool_alloc(void); + +/** + * Free a block, returning it to the memory pool. + * @param ptr Pointer to memory block allocated with mempool_alloc. + */ +FUNGE_ATTR_FAST +void mempool_free(memorypool_data *ptr); +#endif + +CF_MEMPOOL_DECLARE_FUNCS(fspace, struct s_fspace_hash_entry) +#ifdef CFUN_EXACT_BOUNDS +CF_MEMPOOL_DECLARE_FUNCS(fspacecount, struct s_fspacecount_hash_entry) +#endif + +#undef CF_MEMPOOL_FUNCPROT +#undef CF_MEMPOOL_DECLARE_FUNCS + +#ifdef CF_GHT_INTERNAL +# define CF_MEMPOOL_FUNC_INTERN(m_variant, m_funcname) \ + cf_mempool_ ## m_variant ## _ ## m_funcname +# define CF_MEMPOOL_FUNC(m_variant, m_funcname) \ + CF_MEMPOOL_FUNC_INTERN(m_variant, m_funcname) +#endif + +#endif