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annotate src/timer.c @ 1208:96ca8a1cf449

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Remove unused classes
author Thinker K.F. Li <thinker@codemud.net>
date Tue, 04 Jan 2011 10:50:16 +0800
parents 7ccc094bdbe5
children
rev   line source
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1 // -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
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2 // vim: sw=4:ts=8:sts=4
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3 #include <stdio.h>
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4 #include <stdint.h>
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5 #include <stdlib.h>
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6 #include <string.h>
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7 #include "mb_timer.h"
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8 #include "mb_tools.h"
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9 #include "mb_backend.h"
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10
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11
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12 #define OK 0
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13 #define ERR -1
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14
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15 struct _mb_timer {
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16 mb_timeval_t tmo;
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17 mb_tmo_hdlr hdlr;
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18 void *arg;
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19 mb_timer_t *next;
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20 };
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21
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22 struct _mb_tman {
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23 STAILQ(mb_timer_t) timers;
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24 elmpool_t *timer_pool;
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25 };
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26
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27 mb_tman_t *mb_tman_new(void) {
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28 mb_tman_t *tman;
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29
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30 tman = (mb_tman_t *)malloc(sizeof(mb_tman_t));
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31 if(tman == NULL)
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32 return NULL;
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33
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34 tman->timer_pool = elmpool_new(sizeof(mb_timer_t), 32);
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35 if(tman->timer_pool == NULL) {
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36 free(tman);
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37 return NULL;
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38 }
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39
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40 STAILQ_INIT(tman->timers);
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41
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42 return tman;
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43 }
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44
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45 void mb_tman_free(mb_tman_t *tman) {
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46 elmpool_free(tman->timer_pool);
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47 free(tman);
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48 }
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49
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50 mb_timer_t *mb_tman_timeout(mb_tman_t *tman,
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51 const mb_timeval_t *tmo,
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52 mb_tmo_hdlr hdlr, void *arg) {
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53 mb_timer_t *timer, *visit, *last;
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54
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55 timer = elmpool_elm_alloc(tman->timer_pool);
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56 if(timer == NULL)
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57 return NULL;
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58
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59 MB_TIMEVAL_CP(&timer->tmo, tmo);
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60 timer->hdlr = hdlr;
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61 timer->arg = arg;
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62
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63 last = NULL;
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64 for(visit = STAILQ_HEAD(tman->timers);
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65 visit != NULL;
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66 visit = STAILQ_NEXT(mb_timer_t, next, visit)) {
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67 if(MB_TIMEVAL_LATER(&visit->tmo, tmo) ||
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68 MB_TIMEVAL_EQ(&visit->tmo, tmo))
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69 break;
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70 last = visit;
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71 }
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72
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73 if(last == NULL)
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74 STAILQ_INS(tman->timers, mb_timer_t, next, timer);
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75 else if(visit == NULL)
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76 STAILQ_INS_TAIL(tman->timers, mb_timer_t, next, timer);
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77 else
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78 STAILQ_INS_AFTER(mb_timer_t, next, timer, last);
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79
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80 return timer;
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81 }
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82
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83 int mb_tman_remove(mb_tman_t *tman, mb_timer_t *timer) {
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84 STAILQ_REMOVE(tman->timers, mb_timer_t, next, timer);
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85 elmpool_elm_free(tman->timer_pool, timer);
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86
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87 return OK;
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88 }
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89
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90 /*! \brief Get how long to next timeout from this monent.
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91 *
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92 * \return 0 for having next timeout, -1 for not more timeout.
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93 */
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94 int mb_tman_next_timeout(mb_tman_t *tman,
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95 const mb_timeval_t *now, mb_timeval_t *tmo_after) {
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96 mb_timer_t *timer;
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97
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98 timer = STAILQ_HEAD(tman->timers);
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99 if(timer == NULL)
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100 return ERR;
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101
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102 if(!MB_TIMEVAL_LATER(&timer->tmo, now)) {
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103 memset(tmo_after, 0, sizeof(mb_timeval_t));
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104 return OK;
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105 }
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106
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107 MB_TIMEVAL_CP(tmo_after, &timer->tmo);
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108 MB_TIMEVAL_DIFF(tmo_after, now);
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109
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110 return OK;
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111 }
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112
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113 int mb_tman_handle_timeout(mb_tman_t *tman, mb_timeval_t *now) {
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114 mb_timer_t *timer;
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115
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116 while((timer = STAILQ_HEAD(tman->timers)) != NULL){
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117 if(MB_TIMEVAL_LATER(&timer->tmo, now))
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118 break;
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119 timer->hdlr(&timer->tmo, now, timer->arg);
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120 STAILQ_REMOVE(tman->timers, mb_timer_t, next, timer);
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121 elmpool_elm_free(tman->timer_pool, timer);
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122 }
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123
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124 return OK;
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125 }
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126
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127 /*! \defgroup tman_timer_man Timer manager based on mb_tman_t.
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128 *
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129 * This implmentation of timer manager is based on mb_tman_t.
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130 * @{
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131 */
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132 struct _tman_timer_man {
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133 mb_timer_man_t timer_man;
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134 mb_tman_t *tman;
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135 };
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136
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137 static int _tman_timer_man_timeout(struct _mb_timer_man *tm_man,
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138 mb_timeval_t *tmout,
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139 mb_timer_cb_t cb, void *data);
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140 static void _tman_timer_man_remove(struct _mb_timer_man *tm_man, int tm_hdl);
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141 static mb_timer_man_t *_tman_timer_fact_new(void);
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142 static void _tman_timer_fact_free(mb_timer_man_t *timer_man);
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143
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144 static struct _tman_timer_man _tman_default_timer_man = {
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145 {_tman_timer_man_timeout, _tman_timer_man_remove},
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146 NULL
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147 };
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148
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149 mb_timer_factory_t tman_timer_factory = {
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150 _tman_timer_fact_new,
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151 _tman_timer_fact_free
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152 };
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153
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154 /*! \brief Content of a timeout request.
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155 *
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156 * This is only used by internal of X support. This data structure
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157 * carry information to adopt mb_tman_t to mb_timer_man_t.
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158 */
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159 struct _tman_timeout_data {
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160 mb_timer_t *timer; /*!< Handle returned by mb_tman_timeout() */
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161 mb_timer_cb_t cb; /*!< Real callback function */
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162 void *data; /*!< data for real callback */
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163 };
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164
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165 static void
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166 _tman_tmo_hdlr(const mb_timeval_t *tmo,
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167 const mb_timeval_t *now,
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168 void *arg) {
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169 struct _tman_timeout_data *data = (struct _tman_timeout_data *)arg;
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170
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171 data->cb((int)data, tmo, now, data->data);
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172 }
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173
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174 static int
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175 _tman_timer_man_timeout(struct _mb_timer_man *tm_man,
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176 mb_timeval_t *tmout, /* timeout (wall time) */
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177 mb_timer_cb_t cb, void *data) {
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178 struct _tman_timer_man *timer_man = (struct _tman_timer_man *)tm_man;
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179 mb_timer_t *timer;
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180 struct _tman_timeout_data *tmout_data;
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181
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182 tmout_data = O_ALLOC(struct _tman_timeout_data);
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183 tmout_data->cb = cb;
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184 tmout_data->data = data;
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185 timer = mb_tman_timeout(timer_man->tman, tmout,
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186 _tman_tmo_hdlr, tmout_data);
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187 if(timer == NULL)
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188 return ERR;
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189 tmout_data->timer = timer;
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190
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191 return (int)tmout_data;
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192 }
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193
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194 static void
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195 _tman_timer_man_remove(struct _mb_timer_man *tm_man, int tm_hdl) {
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196 struct _tman_timer_man *timer_man = (struct _tman_timer_man *)tm_man;
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197 struct _tman_timeout_data *tmout_data =
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198 (struct _tman_timeout_data *)tm_hdl;
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199
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200 mb_tman_remove(timer_man->tman, tmout_data->timer);
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201 free(tmout_data);
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202 }
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203
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204 static mb_timer_man_t *
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205 _tman_timer_fact_new(void) {
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206 if(_tman_default_timer_man.tman == NULL)
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207 _tman_default_timer_man.tman = mb_tman_new();
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208 return (mb_timer_man_t *)&_tman_default_timer_man;
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209 }
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210
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211 static void
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212 _tman_timer_fact_free(mb_timer_man_t *timer_man) {
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213 }
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214
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215 mb_tman_t *
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216 tman_timer_man_get_tman(mb_timer_man_t *tm_man) {
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217 struct _tman_timer_man *timer_man = (struct _tman_timer_man *)tm_man;
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218
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219 return timer_man->tman;
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220 }
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221
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222
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223 /* @} */