52. Multi-Threaded lookup data

• Set the thread information structure body

  1 struct Threadinfo 2 {3     int *pstart; 4     int length; 5     int key; 6     int ID; 7 };

• Set array

  1 int a[]; 2     time_t ts; 3     int) Time (&ts)); 4      for (int0; i++) 5     {6         ; 7     }

• Initialize the thread structure and start the thread

  1        structThreadinfo info[Ten];2       for(inti =0; I <Ten; i++)3     {4Info[i].pstart = A + I *Ten;5Info[i].length =Ten;6Info[i].key =5;7Info[i].id =i;8_beginthread (Find,0, &info[i]);9}

• multithreaded functions

  1 voidFindvoid*p)2 {3     structThreadinfo *pinfo = p;//Accept Parameters4printf"thread%d starts \ n", pinfo->ID);5      for(int*PX = pinfo->pstart; PX < Pinfo->pstart + pinfo->length; px++)6     {7         if(*px = = pinfo->key)8         {9printf"thread%d found%d,%d\n", Pinfo->id, PX, *px);TenEnQ (&my1, *px);//Address Queue One         } A     } -printf"thread%d ends \ n", pinfo->ID); -}

  Multi-threaded operation of the incoming struct body.

Full code:

1#include <stdio.h>2#include <stdlib.h>3#include <time.h>4#include <process.h>5#include <windows.h>6#include"queue.h"7 8MyQ my1;//queue saves multi-threaded results9 Ten structThreadinfo One { A     int*Pstart; -     intlength; -     intkey; the     intID; - }; -  - voidFindvoid*p) + { -     structThreadinfo *pinfo = p;//Accept Parameters +printf"thread%d starts \ n", pinfo->ID); A      for(int*PX = pinfo->pstart; PX < Pinfo->pstart + pinfo->length; px++) at     { -         if(*px = = pinfo->key) -         { -printf"thread%d found%d,%d\n", Pinfo->id, PX, *px); -EnQ (&my1, *px);//Address Queue -         } in     } -printf"thread%d ends \ n", pinfo->ID); to } +  - voidMain () the { *Init (&AMP;MY1);//Initialize Queue $     inta[ -];Panax Notoginseng time_t ts; -Srand ((unsignedint) Time (&ts)); the      for(inti =0; I < -; i++) +     { AA[i] = rand ()%Ten; the     } +      -      $     structThreadinfo info[Ten]; $      for(inti =0; I <Ten; i++) -     { -Info[i].pstart = A + I *Ten; theInfo[i].length =Ten; -Info[i].key =5;WuyiInfo[i].id =i; the_beginthread (Find,0, &info[i]); -     } WuSleep ( the); -     //Eject queue all data About      while(!isempty (&my1)) $     { -printf"data from the team:%d\n", GetLast (&my1)); -DeQ (&my1); -Print (&my1); A     } +  theSystem"Pause"); -}

52. Multi-Threaded lookup data