1 files changed, 106 insertions, 0 deletions
diff --git a/src/mblock.c b/src/mblock.c
new file mode 100644
index 0000000..09566cd
--- /dev/null
+++ b/src/mblock.c
@@ -0,0 +1,106 @@
+/* mblock.c -- aligned memory blocks (cache issues)
+
+   This file is part of the lzop file compressor.
+
+   Copyright (C) 1996-2010 Markus Franz Xaver Johannes Oberhumer
+   All Rights Reserved.
+
+   lzop and the LZO library are free software; you can redistribute them
+   and/or modify them under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of
+   the License, or (at your option) any later version.
+
+   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; see the file COPYING.
+   If not, write to the Free Software Foundation, Inc.,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+   Markus F.X.J. Oberhumer
+   <markus@oberhumer.com>
+   http://www.oberhumer.com/opensource/lzop/
+ */
+
+
+#include "conf.h"
+
+
+/*************************************************************************
+//
+**************************************************************************/
+
+static void do_init(mblock_p m, lzo_uint32 size, lzo_uint align)
+{
+    memset(m,0,sizeof(*m));
+    m->mb_size = size;
+    m->mb_align = (align > 1) ? align : 1;
+    assert((m->mb_align & (m->mb_align - 1)) == 0);
+    m->mb_adler32 = ADLER32_INIT_VALUE;
+    m->mb_crc32 = CRC32_INIT_VALUE;
+}
+
+
+#if 0
+lzo_bool mb_init(mblock_p m, lzo_uint32 size, lzo_uint align,
+                 lzo_voidp heap, lzo_uint32 heap_size)
+{
+    do_init(m,size,align);
+    if (m->mb_size == 0)
+        return 1;
+
+    if (heap == 0)
+        return 0;
+    m->mb_mem_alloc = (lzo_bytep) heap;
+    m->mb_size_alloc = heap_size;
+    assert(m->mb_size_alloc >= m->mb_size + m->mb_align - 1);
+
+    m->mb_mem = LZO_PTR_ALIGN_UP(m->mb_mem_alloc,m->mb_align);
+    assert(m->mb_mem >= m->mb_mem_alloc);
+    assert(m->mb_mem + m->mb_size <= m->mb_mem_alloc + m->mb_size_alloc);
+#if 0
+    printf("m_init: %p %p %8ld %8ld %8ld\n", m->mb_mem_alloc, m->mb_mem,
+           (long) m->mb_size_alloc, (long) m->mb_size, (long) m->mb_align);
+#endif
+    return 1;
+}
+#endif
+
+
+lzo_bool mb_alloc(mblock_p m, lzo_uint32 size, lzo_uint align)
+{
+    do_init(m,size,align);
+    if (m->mb_size == 0)
+        return 1;
+
+    m->mb_size_alloc = m->mb_size + m->mb_align - 1;
+    m->mb_mem_alloc = (lzo_bytep) acc_halloc(m->mb_size_alloc);
+    if (m->mb_mem_alloc == NULL)
+        return 0;
+    acc_hmemset(m->mb_mem_alloc, 0, m->mb_size_alloc);
+
+    m->mb_mem = LZO_PTR_ALIGN_UP(m->mb_mem_alloc,m->mb_align);
+    assert(m->mb_mem >= m->mb_mem_alloc);
+    assert(m->mb_mem + m->mb_size <= m->mb_mem_alloc + m->mb_size_alloc);
+#if 0
+    printf("m_alloc: %p %p %8ld %8ld %8ld\n", m->mb_mem_alloc, m->mb_mem,
+           (long) m->mb_size_alloc, (long) m->mb_size, (long) m->mb_align);
+#endif
+    return 1;
+}
+
+
+void mb_free(mblock_p m)
+{
+    acc_hfree(m->mb_mem_alloc);
+    memset(m,0,sizeof(*m));
+}
+
+
+/*
+vi:ts=4:et
+*/
+