"C + + Programming" C + + implements multithreaded programming

In the C + + multithreaded programming implementation in two ways, one is the CreateProcess in the Windows header file, the other is the _beginthread in the process.h, I use the latter kind of, And it encapsulates multithreaded operations into Java-like thread classes.

The thread class contains four operations (several states of the corresponding thread): Ready (Start), suspend (suspend), resume (resume), and terminate (terminate), plus an operation that can set the line blocks until those.

The Thread class code is as follows (Thread.h):

#ifndef Thread_h#define THREAD_H#include <windows.h>#include <process.h>typedefvoid*handle; class Thread{ Public: Thread ();//Builder    voidStart ();//thread start functionVirtualvoidRun ();//thread run function    intSuspend ();//thread hangs, returns the number of previous hangs    intResume ();//thread recovery, return the previous suspend Count    voidTerminate ();//forcibly terminate the process    voidSetTimeOut (DWORD time);//Set timeout time, default is infinite   DWORDGetTimeout ();//Return time-outPrivate:HANDLEM_h;//When the handle of the front thread   DWORDM_timeout;//Timeout period    Static voidInitvoid*_H);//Run current thread};#endif

Implementation file (Thread.cpp):

#include <iostream>Using STD:: Cin; using STD:: cout; using STD:: Endl;#include "Thread.h"Thread:: Thread() {M_timeout=INFINITE;//Set default timeout for Infinity}void Thread:: Start() {M_h=(HANDLE) _beginthread (INIT,0, (void *) this);//Create thread}void Thread:: Run(){//Thread Run method}void Thread:: Init(void*_h) {Thread *T=(Thread*) _h; T -Run (); DWORD DW=WaitForSingleObject (t -M_h, T -M_timeout);//wait for thread, end of 500ms after timeout, infinite means no timeoutSwitch (DW) { CaseWait_object_0:break; CaseWait_timeout:cout<< " Time Out" <<Endl Break CaseWait_failed:break; }}//thread hangs, returns the number of previous hangsIntThread:: Suspend(){returnSuspendThread (This -M_h);}//thread recovery, return the previous suspend CountIntThread:: Resume() {DWORD re=ResumeThread (This -M_H);returnRe;}//forcibly terminate the processvoid Thread:: Terminate() {TerminateThread (this -M_h, exit_success);}//Set timeout time, default is infinitevoid Thread:: SetTimeOut(DWORD time) {This -M_timeout=Time;}//Return time-outDWORDThread:: GetTimeout(){returnThis -M_timeout;}

Test file (TestThread.cpp):

 //Test files#include "Thread.h"#include <windows.h>#include <process.h>#include <iostream>using STD::Cin;using STD::cout;using STD:: Endl;#include <string>using STD::string;classTestthread: Publicthread{ Public: Testthread (string_s) {s = _s; }stringSvoidRun ();};voidTestthread::run () { for(inti =0; I <Ten; i++) {cout<<s+"\ n"; }}intMainintargcChar*argv[]) {Testthread *dt[Ten]; dt[0] =NewTestthread ("A");//New Thread Adt[1] =NewTestthread ("B");//new thread Bdt[0]->start ();//Turn on thread a    cout<<dt[0]->suspend () <<endl;//Suspend thread adt[1]->settimeout ( -); dt[1]->start ();//Turn on thread BSleep ( -);//Pause 2s, at which time thread A is still in the suspended state, so do not executedt[0]->resume ();//Recover thread A, at which time thread A is in the recovery state and continues executionGetChar ();}

Test results

"C + + Programming" C + + implements multithreaded programming