1 | /**
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2 | * @file task.h
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3 | * @author myusgun@gmail.com
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4 | * @brief task
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5 | */
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6 | #ifndef __cf_task_h__
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7 | #define __cf_task_h__
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8 |
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9 | #include "cf/exception.h"
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10 |
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11 | #define SYNCHRONIZED(_s) for (cf::task::scopedLock _sl(&_s) ; _sl.isLocked() ; _sl.unlock())
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12 |
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13 | namespace cf
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14 | {
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15 | /**
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16 | * task
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17 | */
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18 | namespace task
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19 | {
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20 | /**
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21 | * interface of synchronizer, like a mutex
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22 | */
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23 | class ISynchronizer
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24 | {
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25 | public:
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26 | /**
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27 | * lock
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28 | * @throw cf::exception
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29 | */
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30 | virtual cf::void_t lock() throw (cf::exception) = 0;
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31 |
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32 | /**
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33 | * unlock
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34 | * @throw cf::exception
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35 | */
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36 | virtual cf::void_t unlock() throw (cf::exception) = 0;
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37 |
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38 | /**
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39 | * is locked ?
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40 | * @return true; false
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41 | */
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42 | virtual cf::bool_t isLocked() const = 0;
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43 | };
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44 |
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45 | /**
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46 | * mutex
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47 | */
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48 | class mutex : public ISynchronizer
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49 | {
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50 | private:
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51 | cf::bool_t mIsLocked;
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52 | cf::void_t * mMutex;
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53 |
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54 | public:
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55 | /**
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56 | * constructor
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57 | * @throw cf::exception
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58 | */
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59 | mutex()
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60 | throw (cf::exception);
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61 |
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62 | /**
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63 | * destructor
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64 | */
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65 | virtual ~mutex();
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66 |
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67 | /**
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68 | * lock
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69 | * @throw cf::exception
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70 | */
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71 | cf::void_t lock()
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72 | throw (cf::exception);
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73 |
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74 | /**
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75 | * unlock
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76 | * @throw cf::exception
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77 | */
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78 | cf::void_t unlock()
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79 | throw (cf::exception);
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80 |
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81 | /**
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82 | * trylock
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83 | * @return true; false
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84 | */
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85 | cf::bool_t trylock()
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86 | throw (cf::exception);
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87 |
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88 | /**
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89 | * is locked ?
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90 | * @return true; false
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91 | */
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92 | cf::bool_t isLocked() const;
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93 | };
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94 |
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95 | /**
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96 | * scoped lock
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97 | * @see SYNCHRONIZE
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98 | */
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99 | class scopedLock
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100 | {
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101 | private:
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102 | ISynchronizer * mSynchronizer;
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103 |
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104 | public:
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105 | /**
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106 | * constructor for locking
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107 | * @throw cf::exception
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108 | */
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109 | scopedLock(ISynchronizer * inst)
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110 | throw (cf::exception);
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111 |
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112 | /**
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113 | * destructor for unlocking
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114 | */
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115 | virtual ~scopedLock();
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116 |
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117 | /**
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118 | * is locked ?
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119 | * @return true; false
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120 | */
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121 | cf::bool_t isLocked() const;
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122 |
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123 | /**
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124 | * unlock
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125 | */
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126 | cf::void_t unlock()
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127 | throw (cf::exception);
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128 | };
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129 |
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130 | /**
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131 | * thread
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132 | */
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133 | class thread
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134 | {
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135 | public:
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136 | /** a prototype of worker function */
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137 | typedef cf::int32_t(* ThreadFunction)(cf::void_t *);
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138 |
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139 | typedef struct _THREAD_CTX
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140 | {
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141 | cf::bool_t mIsRunning;
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142 | ThreadFunction mCallback;
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143 | cf::void_t * mArgument;
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144 | cf::int32_t mReturned;
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145 | } THREAD_CTX;
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146 |
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147 | private:
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148 | THREAD_CTX mCtx;
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149 | cf::void_t * mThreadID;
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150 | mutex mMutex;
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151 |
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152 | public:
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153 | /**
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154 | * constructor
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155 | * @param callback thread worker function
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156 | */
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157 | thread(const ThreadFunction callback)
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158 | throw (cf::exception);
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159 |
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160 | /**
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161 | * destructor
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162 | */
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163 | virtual ~thread();
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164 |
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165 | /**
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166 | * start thread
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167 | * @param arg thread argument
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168 | * @throw cf::exception
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169 | */
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170 | cf::void_t start(cf::void_t * arg)
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171 | throw (cf::exception);
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172 |
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173 | /**
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174 | * join thread
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175 | */
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176 | cf::void_t join();
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177 |
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178 | /**
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179 | * is running ?
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180 | * @return true; false
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181 | */
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182 | cf::bool_t isRunning() const;
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183 |
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184 | /**
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185 | * get thread id
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186 | * @return thread id
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187 | */
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188 | static cf::uint32_t id();
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189 |
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190 | /**
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191 | * sleep
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192 | * @param milliseconds milliseconds
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193 | */
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194 | static cf::void_t sleep(const cf::int32_t milliseconds);
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195 | };
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196 |
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197 | /**
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198 | * process
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199 | */
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200 | class process
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201 | {
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202 | public:
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203 | /**
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204 | * get process id
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205 | * @return process id
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206 | */
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207 | static cf::uint32_t id();
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208 | };
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209 | }
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210 | }
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211 |
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212 | #endif // #ifndef __cf_task_h__
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