`nx_clock_test.nx` source

1// nx_clock_test.nx -- verify clock primitive returns valid + monotonic times.
2//
3// Asserts on STRUCTURE not absolute time values (no Y2K-style hardcodes).
4//   - monotonic clock advances or stays equal across reads
5//   - realtime clock returns nonzero value (clock is initialized)
6//   - elapsed_us is non-negative for any prior start_ns
7//   - elapsed_ms is non-negative
8
9import "syscalls.nx"
10import "nx_clock_full.nx"   // REPLACES nx_clock.nx here ONLY. The 07-21 dedupe kept a minimal nx_clock
11                            // (nx_clock_monotonic_ns, 62 importers -- load-bearing, untouched) and deleted
12                            // this fuller one. They share exactly one symbol, so importing BOTH would
13                            // duplicate it; this test takes the full API instead.
14
15func main() -> i64 {
16    let t0: i64 = nx_clock_monotonic_ns()
17    if t0 <= 0 { return __syscall(93, 10, 0, 0, 0, 0, 0) }
18
19    // Do work between reads so t1 should advance.
20    let buf: *u8 = sys_mmap(1024)
21    var i: i64 = 0
22    while i < 1024 {
23        buf[i] = i & 0xFF
24        i = i + 1
25    }
26
27    let t1: i64 = nx_clock_monotonic_ns()
28    if t1 < t0 { return __syscall(93, 20, 0, 0, 0, 0, 0) }      // monotonic violated
29
30    let elapsed_us: i64 = nx_clock_elapsed_us(t0)
31    if elapsed_us < 0 { return __syscall(93, 30, 0, 0, 0, 0, 0) }
32
33    let elapsed_ms: i64 = nx_clock_elapsed_ms(t0)
34    if elapsed_ms < 0 { return __syscall(93, 31, 0, 0, 0, 0, 0) }
35
36    // Realtime should return a positive value (clock initialized to some
37    // post-epoch time).  We deliberately do NOT check against any
38    // absolute date threshold: that would be a Y2K-style hardcode.
39    let rt: i64 = nx_clock_realtime_ns()
40    if rt <= 0 { return __syscall(93, 40, 0, 0, 0, 0, 0) }
41
42    return 0
43}
nx_clock_test.nx source

`nx_clock_test.nx` source
