Fix all sorts of timer and sleep issues for Ubuntu 20.04 running in WSL

gistfile1.txt

Solution is taken from: https://github.com/microsoft/WSL/issues/4898#issuecomment-646790723

cat <<'EOF' > nanosleep.c
#include <time.h>
#include <unistd.h>
int nanosleep(const struct timespec *req, struct timespec *rem)
{
    return clock_nanosleep(CLOCK_MONOTONIC, 0, req, rem);
}
int usleep(useconds_t usec)
{
    struct timespec req = {
        .tv_sec     = (usec / 1000000),
        .tv_nsec    = (usec % 1000000) * 1000,
    };
    return nanosleep(&req, NULL);
}
EOF

gcc -shared -fPIC -o /usr/local/lib/libnanosleep.so nanosleep.c
echo '/usr/local/lib/libnanosleep.so' >> /etc/ld.so.preload