Github

https://github.com/gongluck/Windows-Core-Program.git

//第7章 线程调度、优先级和关联性.cpp: 定义应用程序的入口点。
//#include "stdafx.h"
#include "第7章 线程调度、优先级和关联性.h"//线程函数
DWORD WINAPI ThreadProc(PVOID param)
{return 0;
}int APIENTRY wWinMain(_In_ HINSTANCE hInstance,_In_opt_ HINSTANCE hPrevInstance,_In_ LPWSTR    lpCmdLine,_In_ int       nCmdShow)
{//线程的挂起和恢复HANDLE hthread = CreateThread(nullptr, 0, ThreadProc, nullptr, CREATE_SUSPENDED, nullptr);DWORD suspendcount = SuspendThread(hthread);//返回线程的前一个挂起计数suspendcount = ResumeThread(hthread);//返回线程的前一个挂起计数BOOL bret = SwitchToThread();//当前线程放弃调度，返回是否有其他可调度线程(低优先级的饥饿线程也会调度)Sleep(0);//当前线程放弃调度，但是低优先级的饥饿线程不会调度FILETIME c, e, k, u;bret = GetThreadTimes(hthread, &c, &e, &k, &u);//获取线程时间//(更)精确的时间计算LARGE_INTEGER start, end;bret = QueryPerformanceCounter(&start);//时钟次数LARGE_INTEGER frequency;bret = QueryPerformanceFrequency(&frequency);//时钟频率bret = QueryPerformanceCounter(&end);double time = (double)(end.QuadPart - start.QuadPart) / (double)frequency.QuadPart;//黑科技GetThreadContext、SetThreadContext//进程优先级STARTUPINFO si = { 0 };si.cb = sizeof(si);PROCESS_INFORMATION pi = { 0 };bret = CreateProcess(TEXT("C:\\WINDOWS\\SYSTEM32\\NOTEPAD.EXE"), nullptr, nullptr, nullptr, FALSE, CREATE_SUSPENDED|NORMAL_PRIORITY_CLASS, nullptr, nullptr, &si, &pi);bret = SetPriorityClass(pi.hProcess, BELOW_NORMAL_PRIORITY_CLASS);//修改进程优先级DWORD priority = GetPriorityClass(pi.hProcess);//线程优先级bret = SetThreadPriority(pi.hThread, THREAD_PRIORITY_BELOW_NORMAL);priority = GetThreadPriority(pi.hThread);//禁止系统自动的优先级提升BOOL bPriority;bret = SetProcessPriorityBoost(pi.hProcess, FALSE);bret = GetProcessPriorityBoost(pi.hProcess, &bPriority);bret = SetThreadPriorityBoost(pi.hThread, FALSE);bret = GetThreadPriorityBoost(pi.hThread, &bPriority);CloseHandle(pi.hProcess);pi.hProcess = nullptr;CloseHandle(pi.hThread);pi.hThread = nullptr;//调度IO请求优先级bret = SetThreadPriority(GetCurrentThread(), THREAD_MODE_BACKGROUND_BEGIN);//降低线程调度优先级，不允许改变另一个线程的IO优先级/*IO操作*/bret = SetThreadPriority(GetCurrentThread(), THREAD_MODE_BACKGROUND_END);//让线程进程normal级别的调度级别，不允许改变另一个线程的IO优先级//设置进程下所有进程的IO请求优先级bret = SetPriorityClass(GetCurrentProcess(), PROCESS_MODE_BACKGROUND_BEGIN);bret = SetPriorityClass(GetCurrentProcess(), PROCESS_MODE_BACKGROUND_END);//单独设置文件IO优先级HANDLE hFile = CreateFile(TEXT("C:\\gongluck"), 0, 0, NULL, CREATE_NEW, 0, NULL);DWORD err = GetLastError();FILE_IO_PRIORITY_HINT_INFO phi;phi.PriorityHint = IoPriorityHintLow;bret = SetFileInformationByHandle(hFile, FileIoPriorityHintInfo, &phi, sizeof(phi));err = GetLastError();CloseHandle(hFile);hFile = nullptr;//进程和CPU关联性DWORD processmask = 0;DWORD systemmask = 0;bret = GetProcessAffinityMask(GetCurrentProcess(), &processmask, &systemmask);bret = SetProcessAffinityMask(GetCurrentProcess(), processmask);bret = GetProcessAffinityMask(GetCurrentProcess(), &processmask, &systemmask);//线程和CPU关联性DWORD oldmask = SetThreadAffinityMask(hthread, 0x00000001);//限制只能在CPU0上运行DWORD oldidea = SetThreadIdealProcessor(hthread, MAXIMUM_PROCESSORS);//设置理想CPUCloseHandle(hthread);hthread = nullptr;system("pause");return 0;
}