1 /*--------------------------------*-C-*---------------------------------*
3 *----------------------------------------------------------------------*
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *----------------------------------------------------------------------*/
25 #define SALLOC_BLOCK 65536 // size of basic block to allocate
27 rxvt_salloc::rxvt_salloc (unsigned int size)
29 this->size = size < sizeof (chain) ? sizeof (chain) : size;
32 firstfree = SALLOC_BLOCK;
35 rxvt_salloc::~rxvt_salloc ()
39 chain *next = firstblock->next;
52 r = (void *)firstline;
53 firstline = firstline->next;
57 if (firstfree + size > SALLOC_BLOCK)
59 chain *next = (chain *)rxvt_malloc ((SALLOC_BLOCK - sizeof (chain)) / size * size + sizeof (chain));
60 next->next = firstblock;
62 firstfree = sizeof (chain);
65 r = (void *) ((char *)firstblock + firstfree);
74 rxvt_salloc::alloc (void *data, unsigned int datalen)
80 memcpy (s, data, datalen);
81 memset ((unsigned char *)s + datalen, 0, size - datalen); // not strictly required for screen.C
84 memcpy (s, data, size);
90 rxvt_salloc::free (void *data)
95 chain *line = (chain *)data;
96 line->next = firstline;