9xthread.cc

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <vector>

static CRITICAL_SECTION cs;

DWORD WINAPI thread_run(void *user_data)
{
    unsigned i = (unsigned)user_data;

    EnterCriticalSection(&cs);
    printf("This is thread %u\n", i);
    Sleep(3000);
    LeaveCriticalSection(&cs);

    return 0;
}

int main()
{
    if (0) {
        InitializeCriticalSection(&cs);
        printf("InitializeCriticalSection\n");
    }
    else {
        SetLastError(0);
        unsigned spin_count = 100;
        BOOL b = InitializeCriticalSectionAndSpinCount(&cs, spin_count);
        DWORD e = GetLastError();
        printf("InitializeCriticalSectionWithSpinCount %u -> (%s,error=%u)\n",
               spin_count, b ? "TRUE" : "FALSE", e);
    }

    std::vector<HANDLE> hThreads;
    for (unsigned i = 0; i < 10; ++i) {
        DWORD idThread = 0;
        DWORD stackSize = 64 * 1024;
        HANDLE hThread = CreateThread(
            NULL, stackSize, &thread_run, (void *)i, 0, &idThread);
        if (!hThread) {
            DWORD e = GetLastError();
            printf("CreateThread error=0x%x\n", e);
            abort();
        }
        hThreads.push_back(hThread);
    }

    for (HANDLE hThread : hThreads) {
        WaitForSingleObject(hThread, INFINITE);
    }

    return 0;
}