| ... | ... | @@ -58,16 +58,25 @@ pub fn timestamp() u64 { |
| 58 | 58 | /// Get the posix timestamp, UTC, in milliseconds |
| 59 | 59 | /// TODO audit this function. is it possible to return an error? |
| 60 | 60 | pub fn milliTimestamp() u64 { |
| 61 | return @divFloor(nanoTimestamp(), millisecond); |
| 62 | } |
| 63 | |
| 64 | /// Get the posix timestamp, UTC, in nanoseconds |
| 65 | /// |
| 66 | /// On windows this only has a granularity of 100 nanoseconds. |
| 67 | /// |
| 68 | /// TODO audit this function. is it possible to return an error? |
| 69 | pub fn nanoTimestamp() u64 { |
| 61 | 70 | if (is_windows) { |
| 62 | 71 | //FileTime has a granularity of 100 nanoseconds |
| 63 | 72 | // and uses the NTFS/Windows epoch |
| 64 | 73 | var ft: os.windows.FILETIME = undefined; |
| 65 | 74 | os.windows.kernel32.GetSystemTimeAsFileTime(&ft); |
| 66 | | const hns_per_ms = (ns_per_s / 100) / ms_per_s; |
| 67 | | const epoch_adj = epoch.windows * ms_per_s; |
| 75 | const ns_per_hns = 100; |
| 76 | const epoch_adj = epoch.windows * ns_per_s; |
| 68 | 77 | |
| 69 | 78 | const ft64 = (@as(u64, ft.dwHighDateTime) << 32) | ft.dwLowDateTime; |
| 70 | | return @divFloor(ft64, hns_per_ms) - -epoch_adj; |
| 79 | return (ft64 * hns_per_ms) - -epoch_adj; |
| 71 | 80 | } |
| 72 | 81 | if (builtin.os.tag == .wasi and !builtin.link_libc) { |
| 73 | 82 | var ns: os.wasi.timestamp_t = undefined; |
| ... | ... | @@ -76,25 +85,22 @@ pub fn milliTimestamp() u64 { |
| 76 | 85 | const err = os.wasi.clock_time_get(os.wasi.CLOCK_REALTIME, 1, &ns); |
| 77 | 86 | assert(err == os.wasi.ESUCCESS); |
| 78 | 87 | |
| 79 | | const ns_per_ms = 1000; |
| 80 | | return @divFloor(ns, ns_per_ms); |
| 88 | return ns; |
| 81 | 89 | } |
| 82 | 90 | if (comptime std.Target.current.isDarwin()) { |
| 83 | | var tv: os.darwin.timeval = undefined; |
| 84 | | var err = os.darwin.gettimeofday(&tv, null); |
| 91 | var mts: os.darwin.mach_timespec_t = undefined; |
| 92 | var err = os.darwin.clock_get_time(os.darwin.CALENDAR_CLOCK, &mts); |
| 85 | 93 | assert(err == 0); |
| 86 | | const sec_ms = tv.tv_sec * ms_per_s; |
| 87 | | const usec_ms = @divFloor(tv.tv_usec, us_per_s / ms_per_s); |
| 88 | | return @intCast(u64, sec_ms + usec_ms); |
| 94 | const sec_ns = @as(u64, mts.tv_sec * ns_per_s); |
| 95 | return sec_ns + @intCast(u64, mts.tv_nsec); |
| 89 | 96 | } |
| 90 | 97 | var ts: os.timespec = undefined; |
| 91 | 98 | //From what I can tell there's no reason clock_gettime |
| 92 | 99 | // should ever fail for us with CLOCK_REALTIME, |
| 93 | 100 | // seccomp aside. |
| 94 | 101 | os.clock_gettime(os.CLOCK_REALTIME, &ts) catch unreachable; |
| 95 | | const sec_ms = @intCast(u64, ts.tv_sec) * ms_per_s; |
| 96 | | const nsec_ms = @divFloor(@intCast(u64, ts.tv_nsec), ns_per_s / ms_per_s); |
| 97 | | return sec_ms + nsec_ms; |
| 102 | const sec_ns = @intCast(u64, ts.tv_sec) * ns_per_s; |
| 103 | return sec_ns + @intCast(u64, ts.tv_nsec); |
| 98 | 104 | } |
| 99 | 105 | |
| 100 | 106 | /// Multiples of a base unit (nanoseconds) |
LeRoyce Pearson <leroycepearson@geemili.xyz> 2020-04-30 20:44:22-06:00
Andrew Kelley <andrew@ziglang.org> 2020-05-24 21:40:08-04:00