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Use better names for darwin timestart

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This commit is contained in:
LeRoyce Pearson 2020-05-01 18:12:26 -06:00 committed by Andrew Kelley
parent b85a191398
commit c6e7d0fcfd
1 changed files with 9 additions and 10 deletions
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19
lib/std/time.zig
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@ -67,10 +67,10 @@ const DarwinTimeStart = struct {
initclock: u64,
};
var _timestart: DarwinTimeStart = undefined;
var _init_timestart_once = std.once(_init_timestart);
var global_timestart: DarwinTimeStart = undefined;
var init_global_timestart_once = std.once(init_global_timestart);
pub fn _init_timestart() void {
pub fn init_global_timestart() void {
var micro: os.darwin.timeval = undefined;
var timestart: DarwinTimeStart = undefined;
@ -83,7 +83,7 @@ pub fn _init_timestart() void {
timestart.inittime.tv_sec = micro.tv_sec;
timestart.inittime.tv_nsec = micro.tv_usec * 1000;
_timestart = timestart;
global_timestart = timestart;
}
/// Get the posix timestamp, UTC, in nanoseconds
@ -114,14 +114,13 @@ pub fn nanoTimestamp() u64 {
}
if (comptime std.Target.current.isDarwin()) {
// https://stackoverflow.com/a/21352348
init_global_timestart_once.call();
_init_timestart_once.call();
const clock: u64 = os.darwin.mach_absolute_time() - global_timestart.initclock;
const nano = @divFloor(clock * @as(u64, global_timestart.timebase.numer), @as(u64, global_timestart.timebase.denom));
const clock: u64 = os.darwin.mach_absolute_time() - _timestart.initclock;
const nano = @divFloor(clock * @as(u64, _timestart.timebase.numer), @as(u64, _timestart.timebase.denom));
const tv_sec_nsec = @intCast(u64, _timestart.inittime.tv_sec) * ns_per_s;
const tv_nsec = @intCast(u64, _timestart.inittime.tv_nsec);
const tv_sec_nsec = @intCast(u64, global_timestart.inittime.tv_sec) * ns_per_s;
const tv_nsec = @intCast(u64, global_timestart.inittime.tv_nsec);
return tv_sec_nsec + tv_nsec + nano;
}