mirror of https://github.com/dzavalishin/oskit/
96 lines
2.5 KiB
C
Executable File
96 lines
2.5 KiB
C
Executable File
/*
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* Copyright (c) 1996, 1998-2000 University of Utah and the Flux Group.
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* All rights reserved.
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*
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* This file is part of the Flux OSKit. The OSKit is free software, also known
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* as "open source;" you can redistribute it and/or modify it under the terms
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* of the GNU General Public License (GPL), version 2, as published by the Free
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* Software Foundation (FSF). To explore alternate licensing terms, contact
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* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
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*
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* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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/*
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* A simple cache wrapper fro osenv_mem
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*/
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#include <oskit/c/malloc.h>
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#include <oskit/c/stdlib.h>
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#include <oskit/dev/dev.h>
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#include <oskit/debug.h>
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extern oskit_u32_t size; // size to cache
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#define ENTRIES 30
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void* cache[ENTRIES];
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int index = 0; // first free entry
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extern void *
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in_osenv_mem_alloc(oskit_size_t size, osenv_memflags_t flags, unsigned align);
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extern void
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in_osenv_mem_free(void *block, osenv_memflags_t flags, oskit_size_t size);
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extern int
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in_osenv_mem_map_phys(oskit_addr_t pa, oskit_size_t size, void **addr, int flags);
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extern oskit_addr_t
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in_osenv_mem_phys_max(void);
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extern oskit_addr_t
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in_osenv_mem_get_phys(oskit_addr_t addr);
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extern oskit_addr_t
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in_osenv_mem_get_virt(oskit_addr_t addr);
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// ToDo: ignores alignment
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void *
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osenv_mem_alloc(oskit_size_t sz, osenv_memflags_t flags, unsigned align)
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{
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if (sz == size && index > 0) {
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return cache[--index];
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} else {
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return in_osenv_mem_alloc(sz,flags,align);
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}
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}
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void
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osenv_mem_free(void *block, osenv_memflags_t flags, oskit_size_t sz)
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{
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if (! (flags & OSENV_AUTO_SIZE) && sz == size && index < ENTRIES) {
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cache[index++] = block;
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} else {
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in_osenv_mem_free(block,flags,sz);
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}
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}
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int
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osenv_mem_map_phys(oskit_addr_t pa, oskit_size_t size, void **addr, int flags)
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{
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return in_osenv_mem_map_phys(pa,size,addr,flags);
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}
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oskit_addr_t
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osenv_mem_phys_max(void)
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{
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return in_osenv_mem_phys_max();
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}
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oskit_addr_t
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osenv_mem_get_phys(oskit_addr_t addr)
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{
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return in_osenv_mem_get_phys(addr);
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}
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oskit_addr_t
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osenv_mem_get_virt(oskit_addr_t addr)
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{
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return in_osenv_mem_get_virt(addr);
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}
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