tickCount on Android

[Try]

https://android.googlesource.com/platform/system/core/+/master/libutils/Timers.cpp

nsecs_t systemTime(int clock) { static const clockid_t clocks[] = { CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_PROCESS_CPUTIME_ID, CLOCK_THREAD_CPUTIME_ID, CLOCK_BOOTTIME }; struct timespec t; t.tv_sec = t.tv_nsec = 0; clock_gettime(clocks[clock], &t); return nsecs_t(t.tv_sec)*1000000000LL + t.tv_nsec; }