讨论：GetProcessIoCounters中的IO到底指的是什么IO

#include <windows.h>

#include <stdio.h>

#include <process.h>



void printIoDelta() {

    static DWORD lastTickCount;

    static IO_COUNTERS lastIoCounters;

    DWORD tickCount;

    IO_COUNTERS ioCounters;

    static int firstTime = 1;



    tickCount = GetTickCount();

    if (!GetProcessIoCounters(GetCurrentProcess(), &ioCounters)) {

        return;

    }



    if (firstTime) {

        firstTime = 0;

        printf("    Time    Read   Write   Other     Read(Bytes)    Write(Bytes)    Other(Bytes)\n");

        printf("--------------------------------------------------------------------------------\n");

    } else {

        printf("%8lu%8llu%8llu%8llu%16llu%16llu%16llu\n",

            tickCount - lastTickCount,

            ioCounters.ReadOperationCount - lastIoCounters.ReadOperationCount,

            ioCounters.WriteOperationCount - lastIoCounters.WriteOperationCount,

            ioCounters.OtherOperationCount - lastIoCounters.OtherOperationCount,

            ioCounters.ReadTransferCount - lastIoCounters.ReadTransferCount,

            ioCounters.WriteTransferCount - lastIoCounters.WriteTransferCount,

            ioCounters.OtherTransferCount - lastIoCounters.OtherTransferCount

            );

    }



    lastTickCount = tickCount;

    memcpy(&lastIoCounters, &ioCounters, sizeof(IO_COUNTERS));

}



void workerThread(void * dummy) {

    int i;

    FILE * fp;

    char buff[500000];

    WSADATA wsaData;

    SOCKET s;

    struct sockaddr_in localAddr;

    struct sockaddr_in peerAddr;



    memset(buff, 'X', sizeof(buff));



    Sleep(2000);



    // 写文件

    fp = fopen("io.txt", "w");

    if (fp) {

        printf("fwrite = %d\n", fwrite(buff, 1, sizeof(buff), fp));

        Sleep(10000);

        // 关闭文件，测试Flush

        printf("fclose\n");

        fclose(fp);

        Sleep(2000);

    }



    // 读文件

    fp = fopen("io.txt", "r");

    if (fp) {

        printf("fread = %d\n", fread(buff, 1, sizeof(buff), fp));

        fclose(fp);

        Sleep(2000);

    }



    // 网络发



    memset((void *)&localAddr, 0, sizeof(localAddr));

    localAddr.sin_family = AF_INET;

    localAddr.sin_addr.s_addr = htonl(INADDR_ANY);

    localAddr.sin_port = htons(0);

    memset((void *)&peerAddr, 0, sizeof(peerAddr));

    peerAddr.sin_family = AF_INET;

    peerAddr.sin_addr.s_addr = inet_addr("10.65.19.7");

    peerAddr.sin_port = htons(3389);



    printf("WSAStartup\n");

    WSAStartup(MAKEWORD(2, 2), &wsaData);

    Sleep(2000);



    // UDP

    printf("socket\n");

    s = socket(AF_INET, SOCK_DGRAM, 0);

    Sleep(2000);



    printf("bind\n");

    bind(s, (struct sockaddr *)&localAddr, sizeof(localAddr));

    Sleep(2000);

    for (i = 0; i < 20; i++) {

        printf("sendto = %d\n", sendto(s, buff, i * 100, 0, (SOCKADDR *) &peerAddr, sizeof(peerAddr)));

        Sleep(2000);

    }

    printf("closesocket\n");

    closesocket(s);

    Sleep(2000);



    // TCP

    printf("socket\n");

    s = socket(AF_INET, SOCK_STREAM, 0);

    Sleep(2000);

    

    printf("bind\n");

    bind(s, (struct sockaddr *)&localAddr, sizeof(localAddr));

    Sleep(2000);



    printf("connect\n");

    connect(s, (SOCKADDR *) &peerAddr, sizeof(peerAddr));

    Sleep(2000);



    printf("send = %d\n", send(s, buff, sizeof(buff), 0));

    Sleep(2000);



    printf("closesocket\n");

    closesocket(s);

    Sleep(2000);



    printf("WSACleanup\n");

    WSACleanup();

}



int main(int argc, char ** argv) {

    // 启动工作线程

    _beginthread(workerThread, 0, 0);



    printf("Ctrl-C to exit\n\n");

    for (;;) {

        printIoDelta();

        Sleep(1000);

    }

    return 0;

}