[4] | 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 __task_h__
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| 7 | #define __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] | 11 | #define SYNCHRONIZED(_s) for (cf::task::scopedLock _sl(&_s) ; _sl.locked() ; _sl.unlock())
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[4] | 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 locked() 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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[7] | 65 | virtual ~mutex();
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[4] | 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 locked() 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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[7] | 115 | virtual ~scopedLock();
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[4] | 116 |
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| 117 | /**
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[11] | 118 | * is locked ?
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| 119 | * @return true; false
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[4] | 120 | */
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[11] | 121 | cf::bool_t locked() 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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[4] | 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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[7] | 163 | virtual ~thread();
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[4] | 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 __task_h__
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