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作者:谢启东编译 来源:天极开发 2007年11月14日
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using namespace System; using namespace System::Threading; public ref class ThreadX { int loopStart; int loopEnd; int dispFrequency; public: ThreadX(int startValue, int endValue, int frequency) { loopStart = startValue; loopEnd = endValue; dispFrequency = frequency; } /*1*/ void ThreadEntryPoint() { /*2*/ String^ threadName = Thread::CurrentThread->Name; for (int i = loopStart; i <= loopEnd; ++i) { if (i % dispFrequency == 0) { Console::WriteLine("{0}: i = {1,10}", threadName, i); } } Console::WriteLine("{0} thread terminating", threadName); } }; int main() { /*3a*/ ThreadX^ o1 = gcnew ThreadX(0, 1000000, 200000); /*3b*/ Thread^ t1 = gcnew Thread(gcnew ThreadStart(o1, &ThreadX::ThreadEntryPoint)); /*3c*/ t1->Name = "t1"; /*4a*/ ThreadX^ o2 = gcnew ThreadX(-1000000, 0, 200000); /*4b*/ Thread^ t2 = gcnew Thread(gcnew ThreadStart(o2, &ThreadX::ThreadEntryPoint)); /*4c*/ t2->Name = "t2"; /*5*/ t1->Start(); /*6*/ t2->Start(); Console::WriteLine("Primary thread terminating"); } |
Primary thread terminating t1: i = 0 t1: i = 200000 t1: i = 400000 t1: i = 600000 t2: i = -1000000 t2: i = -800000 t2: i = -600000 t2: i = -400000 t2: i = -200000 t2: i = 0 t2 thread terminating t1: i = 800000 t1: i = 1000000 t1 thread terminating |
using namespace System; using namespace System::Threading; public ref class Point { int x; int y; public: //定义读写访问器 property int X { int get() { return x; } void set(int val) { x = val; } } property int Y { int get() { return y; } void set(int val) { y = val; } } // ... void Move(int xor, int yor) { /*1a*/ Monitor::Enter(this); X = xor; Y = yor; /*1b*/ Monitor::Exit(this); } virtual bool Equals(Object^ obj) override { // ... if (GetType() == obj->GetType()) { int xCopy1, xCopy2, yCopy1, yCopy2; Point^ p = static_cast<Point^>(obj); /*2a*/ Monitor::Enter(this); xCopy1 = X; xCopy2 = p->X; yCopy1 = Y; yCopy2 = p->Y; /*2b*/ Monitor::Exit(this); return (xCopy1 == xCopy2) && (yCopy1 == yCopy2); } return false; } virtual int GetHashCode() override { int xCopy; int yCopy; /*3a*/ Monitor::Enter(this); xCopy = X; yCopy = Y; /*3b*/ Monitor::Exit(this); return xCopy ^ (yCopy << 1); } virtual String^ ToString() override { int xCopy; int yCopy; /*4a*/ Monitor::Enter(this); xCopy = X; yCopy = Y; /*4b*/ Monitor::Exit(this); return String::Concat("(", xCopy, ",", yCopy, ")"); } }; public ref class ThreadY { Point^ pnt; bool mover; public: ThreadY(bool isMover, Point^ p) { mover = isMover; pnt = p; } void StartUp() { if (mover) { for (int i = 1; i <= 10000000; ++i) { /*1*/ pnt->Move(i, i); } } else { for (int i = 1; i <= 10; ++i) { /*2*/ Console::WriteLine(pnt); // calls ToString Thread::Sleep(10); } } } }; int main() { Point^ p = gcnew Point; /*1*/ ThreadY^ o1 = gcnew ThreadY(true, p); /*2*/ Thread^ t1 = gcnew Thread(gcnew ThreadStart(o1, &ThreadY::StartUp)); /*3*/ ThreadY^ o2 = gcnew ThreadY(false, p); /*4*/ Thread^ t2 = gcnew Thread(gcnew ThreadStart(o2, &ThreadY::StartUp)); t1->Start(); t2->Start(); Thread::Sleep(100); /*5*/ Console::WriteLine("x: {0}", p->X); /*6*/ Console::WriteLine("y: {0}", p->Y); /*7*/ t1->Join(); t2->Join(); } |
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