Mercurial > MadButterfly

annotate include/mb_backend.h @ 1396:a5672125e515

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Copy the transformation matrix when we clone it. It looks like the MB do not copy the matrix automatically. Support isuse attribute to decide how to generate the tweened matrix.
author wycc
date Sat, 02 Apr 2011 05:39:26 +0800
parents fa5f71d4aa04
children
rev   line source
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1 #ifndef __MB_BACKEND_H_
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2 #define __MB_BACKEND_H_
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3
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4 #include "mb_redraw_man.h"
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5 #include "mb_timer.h"
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6 #include "mb_observer.h"
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7 #include "mb_img_ldr.h"
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8
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9 #include "mb_config.h"
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10
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11 #ifdef X_BACKEND
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12 #include "mb_X_supp.h"
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13 #endif
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14
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15 #ifdef DFB_BACKEND
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16 #inclde "mb_dfb_supp.h"
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17 #endif
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18
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19 #ifdef CONSOLE_BACKEND
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20 #include "mb_cons_supp.h"
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21 #endif
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22
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23 struct _mb_rt;
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24 typedef struct _mb_rt mb_rt_t;
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25
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26 struct _mb_timer_man;
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27 struct _mb_timer_factory;
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28 struct _mb_IO_man;
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29 struct _mb_IO_factory;
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30
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31 /*! \brief Type of IO that registered with an IO manager.
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32 */
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33 enum _MB_IO_TYPE {MB_IO_DUMMY, MB_IO_R, MB_IO_W, MB_IO_RW};
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34
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35 typedef struct _mb_timer_man mb_timer_man_t;
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36 typedef struct _mb_timer_factory mb_timer_factory_t;
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37 typedef struct _mb_IO_man mb_IO_man_t;
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38 typedef struct _mb_IO_factory mb_IO_factory_t;
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39 typedef enum _MB_IO_TYPE MB_IO_TYPE;
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40
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41 /*! \brief Function signature of callback functions for IO requests.
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42 */
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43 typedef void (*mb_IO_cb_t)(int hdl, int fd, MB_IO_TYPE type, void *data);
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44
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45 /*! \brief The backend engine mb_backend_t is used to define the
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46 * interface to realize the MB.
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47 *
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48 * A backend is used to receive events from the system. The MB does
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49 * not define the backend by itself. Instead, it define an interface
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50 * which allow the lower layer to implement the event system. Each
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51 * backend need to provides the following events.
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52 *
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53 * - keyboard event
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54 * - timer event
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55 * - image loader(?)
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56 * - render manager(?)
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57 */
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58 typedef struct {
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59 mb_rt_t *(*rt_new)(const char *display, int w,int h);
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60 mb_rt_t *(*rt_new_with_win)(MB_DISPLAY display, MB_WINDOW win);
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61
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62 void (*rt_free)(mb_rt_t *rt);
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63 void (*rt_free_keep_win)(mb_rt_t *rt);
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64 /*! \brief Request the backend to start monitoring a file descriptor.
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65 *
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66 * This is used only when the backend is responsible for event loop.
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67 */
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68 int (*add_event)(mb_rt_t *rt, int fd, MB_IO_TYPE type,
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69 mb_IO_cb_t f,void *arg);
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70 /*! \brief Request the backend to stop monitoring a file descriptor.
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71 *
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72 * This is used only when the backend is responsible for event loop.
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73 */
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74 void (*remove_event)(mb_rt_t *rt, int hdl);
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75 /*! \brief Event Loop
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76 *
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77 * This is called when main application does not handle event
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78 * loop. Or, it should register an IO factory (i.e \ref
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79 * mb_IO_factory_t) with the backend.
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80 */
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81 void (*event_loop)(mb_rt_t *rt);
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82
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83 /*! \brief Flush requests to screen server if existed */
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84 int (*flush)(mb_rt_t *rt);
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85
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86 subject_t *(*kbevents)(mb_rt_t *rt);
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87 redraw_man_t *(*rdman)(mb_rt_t *rt);
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88 mb_timer_man_t *(*timer_man)(mb_rt_t *rt);
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89 observer_factory_t *(*observer_factory)(mb_rt_t *rt);
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90 mb_img_ldr_t *(*loader)(mb_rt_t *rt);
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91
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92 /*
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93 * Following two methods are used to integrate a backend to
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94 * event loop of main application.
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95 */
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96 void (*reg_IO_factory)(mb_IO_factory_t *io_man);
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97 void (*reg_timer_factory)(mb_timer_factory_t *tm_man);
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98 } mb_backend_t;
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99
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100 #define mb_runtime_new(disp, w, h) \
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101 mb_dfl_backend.rt_new((disp), (w), (h))
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102 #define mb_runtime_new_with_win(disp, win) \
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103 mb_dfl_backend.rt_new_with_win((disp), (win))
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104 #define mb_reg_IO_factory(io_fact) \
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105 mb_dfl_backend.reg_IO_factory(io_fact)
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106 #define mb_reg_timer_factory(tm_fact) \
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107 mb_dfl_backend.reg_timer_factory(tm_fact)
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108
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109 /*
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110 * This is defined by backend implementations. For example, X_supp.c
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111 * or dfb_supp.c should defined a backend.
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112 */
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113 extern mb_backend_t mb_dfl_backend;
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114
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115 #define mb_runtime_free(rt) \
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116 mb_dfl_backend.rt_free(rt)
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117 #define mb_runtime_free_keep_win(rt) \
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118 mb_dfl_backend.rt_free_keep_win(rt)
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119 #define mb_runtime_add_event(rt, fd, type, cb, arg) \
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120 mb_dfl_backend.add_event((rt), (fd), (type), (cb), (arg))
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121 #define mb_runtime_remove_event(hdl) \
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122 mb_dfl_backend.remove_event((rt), (hdl))
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123 #define mb_runtime_event_loop(rt) \
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124 mb_dfl_backend.event_loop(rt)
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125 #define mb_runtime_flush(rt) \
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126 mb_dfl_backend.flush(rt)
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127 #define mb_runtime_kbevents(rt) \
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128 mb_dfl_backend.kbevents(rt)
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129 #define mb_runtime_rdman(rt) \
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130 mb_dfl_backend.rdman(rt)
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131 #define mb_runtime_timer_man(rt) \
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132 mb_dfl_backend.timer_man(rt)
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133 #define mb_runtime_observer_factory(rt) \
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134 mb_dfl_backend.observer_factory(rt)
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135 #define mb_runtime_loader(rt) \
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136 mb_dfl_backend.loader(rt)
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137
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138
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139 /*! \brief IO Manager
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140 */
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141 struct _mb_IO_man {
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142 int (*reg)(struct _mb_IO_man *io_man,
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143 int fd, MB_IO_TYPE type, mb_IO_cb_t cb, void *data);
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144 void (*unreg)(struct _mb_IO_man *io_man,
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145 int io_hdl);
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146 };
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147
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148 /*! \brief Factory of IO managers.
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149 */
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150 struct _mb_IO_factory {
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151 mb_IO_man_t *(*io_man_new)(void);
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152 void (*io_man_free)(mb_IO_man_t *io_man);
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153 };
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154
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155 #define mb_io_man_reg(io_man, fd, type, cb, data) \
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156 (io_man)->reg(io_man, fd, type, cb, data)
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157 #define mb_io_man_unreg(io_man, io_hdl) \
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158 (io_man)->unreg(io_man, io_hdl)
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159 #define mb_io_man_new(io_fact) (io_fact)->io_man_new()
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160 #define mb_io_man_free(io_fact, io_man) (io_fact)->io_man_free(io_man)
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161
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162 /*! \brief Function signature of callback functions for timers.
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163 */
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164 typedef void (*mb_timer_cb_t)(int hdl,
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165 const mb_timeval_t *tmo,
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166 const mb_timeval_t *now,
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167 void *data);
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168
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169 /*! \brief Timer manager
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170 */
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171 struct _mb_timer_man {
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172 /*! \brief Setup a timeout callback.
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173 *
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174 * \return -1 for error.
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175 */
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176 int (*timeout)(struct _mb_timer_man *tm_man,
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177 mb_timeval_t *tmout, /* tiemout (wall time) */
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178 mb_timer_cb_t cb, void *data);
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179 /*! \brief Remove a timeout request.
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180 *
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181 * \param tm_hdl is the handle returned by _mb_timer_man::timeout.
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182 */
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183 void (*remove)(struct _mb_timer_man *tm_man, int tm_hdl);
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184 };
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185
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186 /*! \brief Factory of timer manager.
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187 */
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188 struct _mb_timer_factory {
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189 mb_timer_man_t *(*timer_man_new)(void);
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190 void (*timer_man_free)(mb_timer_man_t *timer_man);
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191 };
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192
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193 #define mb_timer_man_timeout(tm_man, tmout, cb, data) \
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194 (tm_man)->timeout((tm_man), (tmout), (cb), (data))
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195 #define mb_timer_man_remove(tm_man, tm_hdl) \
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196 (tm_man)->remove((tm_man), (tm_hdl))
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197 #define mb_timer_man_new(tm_fact) (tm_fact)->timer_man_new()
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198 #define mb_timer_man_free(tm_fact, tm_man) (tm_fact)->timer_man_free(tm_man)
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199
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200 #endif /* __MB_BACKEND_H_ */