1 | /*----------------------------------------------------------------------* |
1 | /*----------------------------------------------------------------------* |
2 | * File: rxvtutil.C |
2 | * File: rxvtutil.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * |
4 | * |
5 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
6 | * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> |
6 | * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de> |
7 | * |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
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 |
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 |
10 | * the Free Software Foundation; either version 3 of the License, or |
11 | * (at your option) any later version. |
11 | * (at your option) any later version. |
12 | * |
12 | * |
13 | * This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 | * You should have received a copy of the GNU General Public License |
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 |
19 | * along with this program; if not, write to the Free Software |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | *----------------------------------------------------------------------*/ |
21 | *----------------------------------------------------------------------*/ |
22 | |
22 | |
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23 | // we include emman.c here to avoid relying on a C compiler, or |
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24 | // on the c++ compiler not complaining about .c, which is unlikely, |
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25 | // but... |
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26 | // This must be the first include, because the _GNU_SOURCE and |
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27 | // _XOPEN_SOURCE macros, used by emman.c, must be defined before |
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28 | // inclusion of any header. |
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29 | #include "emman.c" |
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30 | |
23 | #include <cstdlib> |
31 | #include <stdlib.h> |
24 | #include <cstring> |
32 | #include <string.h> |
25 | #include <inttypes.h> |
33 | #include <inttypes.h> |
26 | |
34 | |
27 | #include "rxvtutil.h" |
35 | #include "rxvtutil.h" |
28 | |
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29 | #if !HAVE_GCC_BUILTINS |
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30 | int rxvt_ctz (unsigned int x) CONST |
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31 | { |
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32 | int r = 0; |
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33 | |
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34 | x &= -x; // this isolates the lowest bit |
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35 | |
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36 | if (x & 0xaaaaaaaa) r += 1; |
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37 | if (x & 0xcccccccc) r += 2; |
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38 | if (x & 0xf0f0f0f0) r += 4; |
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39 | if (x & 0xff00ff00) r += 8; |
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40 | if (x & 0xffff0000) r += 16; |
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41 | |
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42 | return r; |
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43 | } |
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44 | |
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45 | int rxvt_popcount (unsigned int x) CONST |
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46 | { |
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47 | x -= (x >> 1) & 0x55555555; |
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48 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
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49 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
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50 | x *= 0x01010101; |
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51 | |
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52 | return x >> 24; |
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53 | } |
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54 | #endif |
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55 | |
36 | |
56 | void * |
37 | void * |
57 | zero_initialized::operator new (size_t s) |
38 | zero_initialized::operator new (size_t s) |
58 | { |
39 | { |
59 | void *p = malloc (s); |
40 | void *p = malloc (s); |
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62 | return p; |
43 | return p; |
63 | } |
44 | } |
64 | |
45 | |
65 | void |
46 | void |
66 | zero_initialized::operator delete (void *p, size_t s) |
47 | zero_initialized::operator delete (void *p, size_t s) |
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48 | { |
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49 | free (p); |
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50 | } |
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51 | |
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52 | void * |
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53 | operator new (size_t s) throw (std::bad_alloc) |
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54 | { |
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55 | // TODO: use rxvt_malloc |
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56 | return malloc (s); |
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57 | } |
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58 | |
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59 | void |
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60 | operator delete (void *p) throw () |
67 | { |
61 | { |
68 | free (p); |
62 | free (p); |
69 | } |
63 | } |
70 | |
64 | |
71 | static void *temp_buf; |
65 | static void *temp_buf; |
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82 | } |
76 | } |
83 | |
77 | |
84 | return temp_buf; |
78 | return temp_buf; |
85 | } |
79 | } |
86 | |
80 | |
87 | |
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