Linux thread suspend recovery

1 //============================================================================2 //Name:thread.cpp3 //Author:littleku4 //Version:5 //Copyright:littleku6 //Description:thread in C + +, Ansi-style7 //============================================================================8 9#include <pthread.h>Ten#include <unistd.h> One#include <stdio.h> A  - using namespacestd; -  the classThread { -  Public: - Thread () { -          This->_flag =0; +          This->_threadid =0; -::p Thread_mutex_init (& This-_mutex, NULL); +::p Thread_cond_init (& This-_cond, NULL); A     } at     Virtual~Thread () { -::p Thread_mutex_destroy (& This-_mutex); -::p Thread_cond_destroy (& This-_cond); -     } -  -     BOOLStart (BOOLBsuspend =false) { in         if(bsuspend) - SuspendThread (); to  +         if( This->_threadid = =0) -::p thread_create (& This->_threadid, NULL, _threadfunc, This); the  *         return( This->_threadid! =0); $     }Panax Notoginseng  -     voidSuspendThread () { the         if( This->_flag >0) { +printf"thread has been suspend\n"); A             return; the         } +__sync_lock_test_and_set ((Long*) & This->_flag,1); -     } $  $     voidResume () { -         if( This->_flag >0) { -__sync_lock_test_and_set ((Long*) & This->_flag,0); the  -::p Thread_mutex_lock (& This-_mutex);Wuyi::p thread_cond_broadcast (& This-_cond); the::p Thread_mutex_unlock (& This-_mutex); -}Else Wuprintf"thread is running\n"); -     } About  $     Virtual voidOnRun () { -          while( This->_flag <=0) { -printf"Thread running\n"); -:: Usleep ( +* +); A         } +     } the  - Private: $     Static void*_threadfunc (void*param) { theThread *pthis = (thread*) param; the          while(true) { the             /**< suspend = True*/ the             if(Pthis->_flag >0) { -printf"Thread suspend\n"); in  the::p Thread_mutex_lock (&pThis->_mutex); the::p thread_cond_wait (&pthis->_cond, &pThis->_mutex); About::p Thread_mutex_unlock (&pThis->_mutex); the  the}Else { thePthis->OnRun (); +  -                 //Pthis->suspendthread (); the             }Bayi         } the         returnNULL; the     } - Private: - pthread_t _threadid; the     int_flag; the pthread_cond_t _cond; the pthread_mutex_t _mutex; the }; -  the intMainintargcChar*argv[]) { the  the     Charch;94Thread *t =NewThread; theT->start (true); the  the      while(1) {98:: scanf ("%c", &ch); About         Switch(CH) { -          Case 's':101T->SuspendThread ();102              Break;103          Case 'R':104T->Resume (); the              Break;106         default:107              Break;108         }109     } the     DeleteT;111  the     return 0;113}

Linux thread suspend recovery