Problem in NVidia Orin aarm64 with time.now( ) function returning empty struct time.Time, but libc.time( ) returning correct time.

[joaocarvalhoopen]

Hello,

I beleave I have found an bug, this is for aarm64 on NVidia Orin 64 GB on Linux Ubuntu from the NVidia.

The Nvidia Orim, each core is similar to a CPU core of a Raspberry Pi 5.

The used version of Odin in this NVidia Orin is :

odin version dev-2024-10

I'm trying to give a date the name of a file and for that I'm using the function time.now() to get the date but it returns the empty struct.

current_time_instant : time.Time = time.now( )

str_time_h_m_s, _ := strings.replace_all(
                                        time.to_string_hms( current_time_instant, buf_time[ : ] ),
                                        ":",      // Replace this.
                                        "-"  )    // By this. 

But the time.now( ) returns always the empty struct value. That is zero, that corresponds to the day zero of 1970 UNIX time.

And the when I run the date command in the shell I see the correct date 2024_12, so it's not a problem of the date inside this computer.

I have seen the code inside time.now() but it calls a

core:time/time_linux.odin


_now :: proc "contextless" () -> Time {
   time_spec_now, _ := linux.clock_gettime(.REALTIME)
   ns := time_spec_now.time_sec * 1e9 + time_spec_now.time_nsec
   return Time{_nsec=i64(ns)}
}

I have substituted .REALTIME with other identifiers without success.


core:sys/linux/sys.odin

/*
   Retrieve the time of the specified clock.
   Available since Linux 2.6.
*/
clock_gettime :: proc "contextless" (clock: Clock_Id) -> (ts: Time_Spec, err: Errno) {
   ret := syscall(SYS_clock_gettime, clock, &ts)
   err = Errno(-ret)
   return
}

core:sys/linux/sys_call_amd64.odin

SYS_clock_gettime           :: uintptr(228)


core:sys/linux/sys_call_arm64.odin

SYS_clock_gettime           :: uintptr(113)


/*
        Clock IDs for various system clocks.
*/
Clock_Id :: enum {
        REALTIME           = 0,
        MONOTONIC          = 1,
        PROCESS_CPUTIME_ID = 2,
        THREAD_CPUTIME_ID  = 3,
        MONOTONIC_RAW      = 4,
        REALTIME_COARSE    = 5,
        MONOTONIC_COARSE   = 6,
        BOOTTIME           = 7,
        REALTIME_ALARM     = 8,
        BOOTTIME_ALARM     = 9,
}

NOTE_0 : I tryed to copy to my program the previous function and change the .REALTIME enum label to others to see if I could make them work, and could not make them work either.

NOTE_1 : If I use the libc.time() and then convert seconds to nanoseconds and fill the time.Time structure (with a transmute ) all my rest program works well. So I believe that there isn't any error on my program.

NOTE_2 : zen3ger on the Odin forum said the following that can also be important:

" zen3ger
I found a couple nvidia forum posts regarding CLOCK_REALTIME, so it could be they have a silently patched libc to get it working. "

Best regards and have a nice day,
Joao Carvalho