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Rewrite ZipOS

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This reduces the virtual memory usage of Emacs for me by 30%. We now
have a simpler implementation that uses read(), rather mmap()ing the
whole executable.
This commit is contained in:
Justine Tunney 2023-10-03 07:27:25 -07:00
parent ff77f2a6af
commit b01282e23e
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GPG key ID: BE714B4575D6E328
21 changed files with 408 additions and 421 deletions
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libc/runtime/zipos-inode.c
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@ -33,7 +33,6 @@ static uint64_t __zipos_fnv(const char *s, int len) {
uint64_t __zipos_inode(struct Zipos *zipos, int64_t cfile, //
const void *name, size_t namelen) {
unassert(cfile >= 0);
if (cfile == ZIPOS_SYNTHETIC_DIRECTORY) {
if (namelen && ((char *)name)[namelen - 1] == '/') --namelen;
cfile = INT64_MIN | __zipos_fnv(name, namelen);