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annotate include/SDL_version.h @ 3696:47d923feedb0

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Fixed bug #935 Patrice Mandin Hello, I originally added pth support for threads in SDL 1.2 because on the Atari platform we did not have any thread library. I think pth support could be removed from SDL 1.3 for two reasons: - Atari platform removed - pth does not provides real (preemptive) threads, because it is user space, and expect the application to call one of its function to give CPU to another thread. So it is not exactly useful for applications, that expect threads to run simultaneously.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Jan 2010 20:47:20 +0000
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children f7b03b6838cb
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /**
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24 * \file SDL_version.h
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25 *
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26 * This header defines the current SDL version.
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27 */
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28
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29 #ifndef _SDL_version_h
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30 #define _SDL_version_h
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31
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32 #include "SDL_stdinc.h"
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33 #include "SDL_revision.h"
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34
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35 #include "begin_code.h"
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36 /* Set up for C function definitions, even when using C++ */
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37 #ifdef __cplusplus
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38 /* *INDENT-OFF* */
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39 extern "C" {
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40 /* *INDENT-ON* */
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41 #endif
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42
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43 /**
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44 * \brief Information the version of SDL in use.
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45 *
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46 * Represents the library's version as three levels: major revision
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47 * (increments with massive changes, additions, and enhancements),
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48 * minor revision (increments with backwards-compatible changes to the
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49 * major revision), and patchlevel (increments with fixes to the minor
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50 * revision).
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51 *
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52 * \sa SDL_VERSION
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53 * \sa SDL_GetVersion
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54 */
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55 typedef struct SDL_version
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56 {
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57 Uint8 major; /**< major version */
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58 Uint8 minor; /**< minor version */
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59 Uint8 patch; /**< update version */
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60 } SDL_version;
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61
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62 /* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
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63 */
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64 #define SDL_MAJOR_VERSION 1
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65 #define SDL_MINOR_VERSION 3
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66 #define SDL_PATCHLEVEL 0
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67
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68 /**
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69 * \brief Macro to determine SDL version program was compiled against.
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70 *
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71 * This macro fills in a SDL_version structure with the version of the
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72 * library you compiled against. This is determined by what header the
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73 * compiler uses. Note that if you dynamically linked the library, you might
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74 * have a slightly newer or older version at runtime. That version can be
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75 * determined with SDL_GetVersion(), which, unlike SDL_VERSION(),
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76 * is not a macro.
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77 *
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78 * \param x A pointer to a SDL_version struct to initialize.
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79 *
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80 * \sa SDL_version
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81 * \sa SDL_GetVersion
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82 */
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83 #define SDL_VERSION(x) \
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84 { \
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85 (x)->major = SDL_MAJOR_VERSION; \
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86 (x)->minor = SDL_MINOR_VERSION; \
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87 (x)->patch = SDL_PATCHLEVEL; \
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88 }
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89
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90 /**
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91 * This macro turns the version numbers into a numeric value:
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92 * \verbatim
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93 (1,2,3) -> (1203)
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94 \endverbatim
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95 *
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96 * This assumes that there will never be more than 100 patchlevels.
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97 */
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98 #define SDL_VERSIONNUM(X, Y, Z) \
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99 ((X)*1000 + (Y)*100 + (Z))
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100
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101 /**
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102 * This is the version number macro for the current SDL version.
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103 */
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104 #define SDL_COMPILEDVERSION \
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105 SDL_VERSIONNUM(SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL)
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106
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107 /**
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108 * This macro will evaluate to true if compiled with SDL at least X.Y.Z.
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109 */
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110 #define SDL_VERSION_ATLEAST(X, Y, Z) \
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111 (SDL_COMPILEDVERSION >= SDL_VERSIONNUM(X, Y, Z))
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112
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113 /**
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114 * \brief Get the version of SDL that is linked against your program.
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115 *
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116 * If you are using a shared library (DLL) version of SDL, then it is
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117 * possible that it will be different than the version you compiled against.
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118 *
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119 * This is a real function; the macro SDL_VERSION() tells you what version
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120 * of SDL you compiled against:
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121 *
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122 * \code
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123 * SDL_version compiled;
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124 * SDL_version linked;
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125 *
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126 * SDL_VERSION(&compiled);
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127 * SDL_GetVersion(&linked);
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128 * printf("We compiled against SDL version %d.%d.%d ...\n",
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129 * compiled.major, compiled.minor, compiled.patch);
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130 * printf("But we linked against SDL version %d.%d.%d.\n",
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131 * linked.major, linked.minor, linked.patch);
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132 * \endcode
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133 *
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134 * This function may be called safely at any time, even before SDL_Init().
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135 *
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136 * \sa SDL_VERSION
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137 */
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138 extern DECLSPEC void SDLCALL SDL_GetVersion(SDL_version * ver);
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139
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140 /**
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141 * \brief Get the code revision of SDL that is linked against your program.
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142 */
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143 extern DECLSPEC int SDLCALL SDL_GetRevision(void);
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144
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145 /* Ends C function definitions when using C++ */
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146 #ifdef __cplusplus
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147 /* *INDENT-OFF* */
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148 }
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149 /* *INDENT-ON* */
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150 #endif
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151 #include "close_code.h"
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152
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153 #endif /* _SDL_version_h */
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155 /* vi: set ts=4 sw=4 expandtab: */