1 | //libroar.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2010 |
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5 | * |
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6 | * This file is part of libroar a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * libroar is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | * NOTE for everyone want's to change something and send patches: |
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25 | * read README and HACKING! There a addition information on |
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26 | * the license of this document you need to read before you send |
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27 | * any patches. |
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28 | * |
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29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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30 | * or libpulse*: |
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31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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32 | * and are therefore GPL. Because of this it may be illigal to use |
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33 | * them with any software that uses libesd, libartsc or libpulse*. |
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34 | */ |
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35 | |
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36 | #include "libroar.h" |
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37 | |
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38 | #ifndef roar_mm_mlock |
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39 | int roar_mm_mlock(const void *addr, size_t len) { |
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40 | #if defined(ROAR_TARGET_WIN32) |
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41 | return GlobalLock(addr) == addr ? 0 : -1; |
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42 | #elif defined(ROAR_TARGET_MICROCONTROLLER) |
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43 | return 0; |
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44 | #elif defined(_SC_PAGESIZE) |
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45 | long sz = sysconf(_SC_PAGESIZE); |
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46 | unsigned long int pos = (unsigned long int) addr; |
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47 | |
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48 | len += sz - (len % sz); |
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49 | |
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50 | pos -= pos % sz; |
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51 | |
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52 | return mlock((void*)pos, len); |
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53 | #else |
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54 | return -1; |
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55 | #endif |
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56 | } |
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57 | #endif |
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58 | |
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59 | #ifndef roar_mm_munlock |
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60 | int roar_mm_munlock(const void *addr, size_t len) { |
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61 | #if defined(ROAR_TARGET_WIN32) |
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62 | // TODO: find out what do do here. GlobalUnLock()? does such a function exist? |
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63 | // return GlobalLock(addr) == addr ? 0 : -1; |
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64 | return -1; |
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65 | #elif defined(ROAR_TARGET_MICROCONTROLLER) |
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66 | return 0; |
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67 | #elif defined(_SC_PAGESIZE) |
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68 | long sz = sysconf(_SC_PAGESIZE); |
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69 | unsigned long int pos = (unsigned long int) addr; |
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70 | |
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71 | len += sz - (len % sz); |
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72 | |
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73 | pos -= pos % sz; |
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74 | |
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75 | return munlock((void*)pos, len); |
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76 | #else |
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77 | return -1; |
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78 | #endif |
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79 | } |
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80 | #endif |
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81 | |
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82 | // for compatibility with old versions: |
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83 | int _ROAR_MLOCK(const void *addr, size_t len) { |
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84 | roar_debug_warn_obsolete("_ROAR_MLOCK", "roar_mm_mlock", NULL); |
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85 | return roar_mm_mlock(addr, len); |
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86 | } |
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87 | |
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88 | //ll |
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