diff interps/cfunge/cfunge-src/lib/libghthash/cfunge_mempool.h @ 996:859f9b4339e6

<Gregor> tar xf egobot.tar.xz
author HackBot
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
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+/* -*- 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