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Make improvements

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- Introduce portable sched_getcpu() api
- Support GCC's __target_clones__ feature
- Make fma() go faster on x86 in default mode
- Remove some asan checks from core libraries
- WinMain() now ensures $HOME and $USER are defined
This commit is contained in:
Justine Tunney 2024-02-01 03:39:46 -08:00
parent d5225a693b
commit 2ab9e9f7fd
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192 changed files with 2809 additions and 932 deletions
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25
libc/calls/clock_gettime.c
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@ -61,24 +61,13 @@ static int __clock_gettime_init(int clockid, struct timespec *ts) {
/**
* Returns nanosecond time.
*
* @param clock can be one of:
* - `CLOCK_REALTIME`: universally supported
* - `CLOCK_REALTIME_FAST`: ditto but faster on freebsd
* - `CLOCK_REALTIME_PRECISE`: ditto but better on freebsd
* - `CLOCK_REALTIME_COARSE`: : like `CLOCK_REALTIME_FAST` w/ Linux 2.6.32+
* - `CLOCK_MONOTONIC`: universally supported (except on XNU/NT w/o INVTSC)
* - `CLOCK_MONOTONIC_FAST`: ditto but faster on freebsd
* - `CLOCK_MONOTONIC_PRECISE`: ditto but better on freebsd
* - `CLOCK_MONOTONIC_COARSE`: : like `CLOCK_MONOTONIC_FAST` w/ Linux 2.6.32+
* - `CLOCK_MONOTONIC_RAW`: is actually monotonic but needs Linux 2.6.28+
* - `CLOCK_PROCESS_CPUTIME_ID`: linux and bsd (NetBSD permits OR'd PID)
* - `CLOCK_THREAD_CPUTIME_ID`: linux and bsd (NetBSD permits OR'd TID)
* - `CLOCK_MONOTONIC_COARSE`: linux, freebsd
* - `CLOCK_PROF`: linux and netbsd
* - `CLOCK_BOOTTIME`: linux and openbsd
* - `CLOCK_REALTIME_ALARM`: linux-only
* - `CLOCK_BOOTTIME_ALARM`: linux-only
* - `CLOCK_TAI`: linux-only
* @param clock supports the following values across OSes:
* - `CLOCK_REALTIME`
* - `CLOCK_MONOTONIC`
* - `CLOCK_REALTIME_COARSE`
* - `CLOCK_MONOTONIC_COARSE`
* - `CLOCK_THREAD_CPUTIME_ID`
* - `CLOCK_PROCESS_CPUTIME_ID`
* @param ts is where the result is stored (or null to do clock check)
* @return 0 on success, or -1 w/ errno
* @raise EFAULT if `ts` points to invalid memory