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Write more tests for signal handling

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There's now a much stronger level of assurance that signaling on Windows
will be atomic, low-latency, low tail latency, and shall never deadlock.
This commit is contained in:
Justine Tunney 2024-09-21 05:24:56 -07:00
parent 0e59afb403
commit dd8c4dbd7d
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GPG key ID: BE714B4575D6E328
19 changed files with 407 additions and 75 deletions
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7
libc/intrin/sigprocmask-nt.c
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@ -47,6 +47,9 @@ textwindows int __sig_mask(int how, const sigset_t *neu, sigset_t *old) {
} else { // SIG_SETMASK
oldmask = atomic_exchange_explicit(mask, *neu, memory_order_acq_rel);
}
if (_weaken(__sig_check)) {
_weaken(__sig_check)();
}
} else {
oldmask = atomic_load_explicit(mask, memory_order_acquire);
}
@ -56,10 +59,6 @@ textwindows int __sig_mask(int how, const sigset_t *neu, sigset_t *old) {
*old = oldmask;
}
if (_weaken(__sig_check)) {
_weaken(__sig_check)();
}
return 0;
}