| From: | Sergey Shinderuk <s(dot)shinderuk(at)postgrespro(dot)ru> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: pg_preadv() and pg_pwritev() |
| Date: | 2021-01-15 02:04:48 |
| Message-ID: | [email protected] |
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| Thread: | |
| Lists: | pgsql-hackers |
On 15.01.2021 04:53, Sergey Shinderuk wrote:
> I see that "xcrun --sdk macosx --show-sdk-path" really calls
> "/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild -sdk
> macosx -version Path" under the hood.
>
... and caches the result. xcodebuild not called without --no-cache.
So it still make sense to fall back on xcodebuild.
% sudo dtrace -n 'pid$target::popen:entry { trace(copyinstr(arg0)) }' -c
'xcrun --sdk macosx --show-sdk-path'
dtrace: description 'pid$target::popen:entry ' matched 1 probe
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.1.sdk
dtrace: pid 26981 has exited
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