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Introduce interprocess signaling on Windows

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This change gets rsync working without any warning or errors. On Windows
we now create a bunch of C:\var\sig\x\y.pid shared memory files, so sigs
can be delivered between processes. WinMain() creates this file when the
process starts. If the program links signaling system calls then we make
a thread at startup too, which allows asynchronous delivery each quantum
and cancelation points can spot these signals potentially faster on wait

See #1240
This commit is contained in:
Justine Tunney 2024-09-19 03:02:13 -07:00
parent 8527462b95
commit 0d74673213
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GPG key ID: BE714B4575D6E328
22 changed files with 302 additions and 62 deletions
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libc/fmt/internal.h
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@ -48,5 +48,6 @@
int __vcscanf(int (*)(void *), int (*)(int, void *), void *, const char *,
va_list);
int __fmt(void *, void *, const char *, va_list, int *);
char16_t *__itoa16(char16_t[21], uint64_t);
#endif /* COSMOPOLITAN_LIBC_FMT_STRTOL_H_ */