Bring back gc() function

Renaming gc() to _gc() was a mistake since the better thing to do is put
it behind the _COSMO_SOURCE macro. We need this change because I haven't
wanted to use my amazing garbage collector ever since we renamed it. You
now need to define _COSMO_SOURCE yourself when using amalgamation header
and cosmocc users need to pass the -mcosmo flag to get the gc() function

Some other issues relating to cancelation have been fixed along the way.
We're also now putting cosmocc in a folder named `.cosmocc` so it can be
more safely excluded by grep --exclude-dir=.cosmocc --exclude-dir=o etc.
This commit is contained in:
Justine Tunney 2024-01-08 10:07:35 -08:00
parent 6cb0354e19
commit a4b455185b
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280 changed files with 1362 additions and 1407 deletions

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@ -42,7 +42,7 @@
* On newer Linux only (c. 2013) it's possible to turn the anonymous
* returned file back into a real file, by doing this:
*
* linkat(AT_FDCWD, _gc(xasprintf("/proc/self/fd/%d", fileno(f))),
* linkat(AT_FDCWD, gc(xasprintf("/proc/self/fd/%d", fileno(f))),
* AT_FDCWD, "real.txt", AT_SYMLINK_FOLLOW)
*
* On the New Technology, temporary files created by this function