Can you halp me to write timer into DLL

If you're looking for something more high-resolution, I've been using QueryPerformanceCounter (https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx), which is encouraged over rdtsc/p. It's trickier to use than sleep/setTimer, but the overhead is 10s-100s of cycles with fine-grained results.

I've written some wrappers for them, but haven't spent much time on it. One version seems to work and notifies when x ms pass, or that x ms pass, the other function returns the same in microseconds. They're not tested enough, but seemed to time the correct amount of time elapsed so far. They use qpc mainly like this:

Code:

        sub rsp, 8*4
        mov rcx, [newTime.time.frequency]
        call [QueryPerformanceFrequency]
        add rsp, 8*4

Save start time:

Code:

        mov rbx, [startTime.time]
        mov rdx, rbx
        add rdx, Time.duration                  ; Get Time.duration address
        mov r11, [rdx]
        mov qword [r11], 0                      ; Initialize as 0

        sub rsp, 8*4
        add rbx, Time.start
        mov rcx, [rbx]
        call [QueryPerformanceCounter]
        add rsp, 8*4

query the delta time, divide by freq:

Code:

        sub rsp, 8*4
        mov rbx, [deltaTime.time]
        add rbx, Time.duration
        mov rcx, [rbx]
        call [QueryPerformanceCounter]
        add rsp, 8*4

using a struc with ptrs:

Code:

        struc Time{
                .duration                               dq 0                    ;Address
                .frequency                              dq 0                    ;Address
                .start                                  dq 0                    ;Address
        }

I can post any 64-bit functions/the Time.inc file I'm using, but would need to test it a bit more and provide an integer result version. I'm currently outputting as single precision.