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/cvs/rxvt-unicode/src/rxvtutil.C
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Comparing rxvt-unicode/src/rxvtutil.C (file contents):
Revision 1.4 by root, Sun Jan 29 22:27:04 2006 UTC vs.
Revision 1.21 by sf-exg, Tue Oct 28 09:05:33 2014 UTC

1/*----------------------------------------------------------------------*
2 * File: rxvtutil.C
3 *----------------------------------------------------------------------*
4 *
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
7 *
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 3 of the License, or
11 * (at your option) any later version.
12 *
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.
17 *
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 *----------------------------------------------------------------------*/
22
23// we include emman.c here to avoid relying on a C compiler, or
24// on the c++ compiler not complaining about .c, which is unlikely,
25// but...
26// This must be the first include, because the _GNU_SOURCE and
27// _XOPEN_SOURCE macros, used by emman.c, must be defined before
28// inclusion of any header.
29#include "emman.c"
30
1#include <cstdlib> 31#include <stdlib.h>
2#include <cstring> 32#include <string.h>
3#include <inttypes.h> 33#include <inttypes.h>
4 34
5#include "rxvtutil.h" 35#include "rxvtutil.h"
6
7class byteorder byteorder;
8
9unsigned int byteorder::e;
10
11byteorder::byteorder ()
12{
13 union {
14 uint32_t u;
15 uint8_t b[4];
16 } w;
17
18 w.b[0] = 0x11;
19 w.b[1] = 0x22;
20 w.b[2] = 0x33;
21 w.b[3] = 0x44;
22
23 e = w.u;
24}
25
26#if !HAVE_GCC_BUILTINS
27int ctz (unsigned int x)
28{
29 int r = 0;
30
31 x &= -x; // this isolates the lowest bit
32
33 if (x & 0xaaaaaaaa) r += 1;
34 if (x & 0xcccccccc) r += 2;
35 if (x & 0xf0f0f0f0) r += 4;
36 if (x & 0xff00ff00) r += 8;
37 if (x & 0xffff0000) r += 16;
38
39 return r;
40}
41
42int popcount (unsigned int x)
43{
44 x -= (x >> 1) & 0x55555555;
45 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
46 x = ((x >> 4) + x) & 0x0f0f0f0f;
47 x *= 0x01010101;
48
49 return x >> 24;
50}
51#endif
52 36
53void * 37void *
54zero_initialized::operator new (size_t s) 38zero_initialized::operator new (size_t s)
55{ 39{
56 void *p = malloc (s); 40 void *p = malloc (s);
… …
63zero_initialized::operator delete (void *p, size_t s) 47zero_initialized::operator delete (void *p, size_t s)
64{ 48{
65 free (p); 49 free (p);
66} 50}
67 51
52void *
53operator new (size_t s) throw (std::bad_alloc)
54{
55 // TODO: use rxvt_malloc
56 return malloc (s);
57}
58
59void
60operator delete (void *p) throw ()
61{
62 free (p);
63}
64
68static void *temp_buf; 65static void *temp_buf;
69static uint32_t temp_len; 66static uint32_t temp_len;
70 67
71void * 68void *
72rxvt_temp_buf (int len) 69rxvt_temp_buf (int len)
73{ 70{
74 if (len > temp_len) 71 if (len > temp_len)
75 { 72 {
76 free (temp_buf); 73 free (temp_buf);
77 temp_buf = malloc (len); 74 temp_buf = malloc (len);
78 temp_len = len; 75 temp_len = len;
79 } 76 }
80 77
81 return temp_buf; 78 return temp_buf;
82} 79}
83 80
84

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