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1 | /*----------------------------------------------------------------------* |
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2 | * File: salloc.C |
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3 | *----------------------------------------------------------------------* |
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4 | * |
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5 | * All portions of code are copyright by their respective author/s. |
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6 | * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com> |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or modify |
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9 | * it under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation; either version 2 of the License, or |
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11 | * (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 | *----------------------------------------------------------------------*/ |
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22 | |
| 1 | #include "salloc.h" |
23 | #include "salloc.h" |
| 2 | |
24 | |
| 3 | #define SALLOC_BLOCK 65536 // size of basic block to allocate |
25 | #define SALLOC_BLOCK 65536 // size of basic block to allocate |
| 4 | |
26 | |
| 5 | rxvt_salloc::rxvt_salloc (int size) |
27 | rxvt_salloc::rxvt_salloc (unsigned int size) |
| 6 | { |
28 | { |
| 7 | this->size = size < sizeof (chain) ? sizeof (chain) : size; |
29 | this->size = size < sizeof (chain) ? sizeof (chain) : size; |
| 8 | firstline = 0; |
30 | firstline = 0; |
| 9 | firstblock = 0; |
31 | firstblock = 0; |
| 10 | firstfree = SALLOC_BLOCK; |
32 | firstfree = SALLOC_BLOCK; |
| … | |
… | |
| 38 | next->next = firstblock; |
60 | next->next = firstblock; |
| 39 | firstblock = next; |
61 | firstblock = next; |
| 40 | firstfree = sizeof (chain); |
62 | firstfree = sizeof (chain); |
| 41 | } |
63 | } |
| 42 | |
64 | |
| 43 | r = (void *)((char *)firstblock + firstfree); |
65 | r = (void *) ((char *)firstblock + firstfree); |
| 44 | |
66 | |
| 45 | firstfree += size; |
67 | firstfree += size; |
| 46 | } |
68 | } |
| 47 | |
69 | |
| 48 | return r; |
70 | return r; |
| 49 | } |
71 | } |
| 50 | |
72 | |
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73 | void * |
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74 | rxvt_salloc::alloc (void *data, unsigned int datalen) |
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75 | { |
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76 | void *s = alloc (); |
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77 | |
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78 | if (datalen < size) |
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79 | { |
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80 | memcpy (s, data, datalen); |
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81 | memset ((unsigned char *)s + datalen, 0, size - datalen); // not strictly required for screen.C |
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82 | } |
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83 | else |
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84 | memcpy (s, data, size); |
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85 | |
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86 | return s; |
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87 | } |
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88 | |
| 51 | void |
89 | void |
| 52 | rxvt_salloc::free (void *data) |
90 | rxvt_salloc::free (void *data) |
| 53 | { |
91 | { |
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92 | if (!data) |
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93 | return; |
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94 | |
| 54 | chain *line = (chain *)data; |
95 | chain *line = (chain *)data; |
| 55 | line->next = firstline; |
96 | line->next = firstline; |
| 56 | firstline = line; |
97 | firstline = line; |
| 57 | } |
98 | } |
| 58 | |
99 | |
