C / C++ / MFC

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

int main()
{
    void *ptr = malloc(1024);
    char *tmp = ptr;

    for(size_t i = 0; i < 24; i++, ++tmp) {
        long double *d = (long double *)tmp;
        *d = i * 2.0L;
        printf("tmp = %p, d = %p *d = %Lf\n", tmp, d, *d);
    }

    free(ptr);

    return 0;
}

k5054 wrote:

I think you need to be careful with #pragma pack. X86-64 doesn't seem to have a problem accessing unaligned data, but I assume its slower to do so than correctly aligned data.

struct S {
    int i;
    double d;
    char str[25];
};

S s;

std:ifstream data("data.bin", std::ios:binary);
data.read(reinterpret_cast<char *>(&s), sizeof s);

ForNow wrote:

I let the worker thread wait on the events and do the appropriate SendMessage

ForNow wrote:

No not sure how WSAWaitForMultipleEvents is implemented in Windows MFC app But it was always my understanding based on feedback from people such as yourself that any kernel object wait I.E WaitForSingle/Multiple should be done in a worker thread correct ?

ForNow wrote:

don’t think the wait should be in the main thread