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Introduce sigtimedwait() and sigwaitinfo()

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This change also invents sigcountset() and strsignal_r() and improves
the quality of siginfo_t handling.
This commit is contained in:
Justine Tunney 2022-10-10 07:36:07 -07:00
parent 7ae556463a
commit 467a332e38
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GPG key ID: BE714B4575D6E328
41 changed files with 887 additions and 345 deletions
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14
libc/intrin/describesigset.c
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@ -26,9 +26,11 @@
#define N 128
#define append(...) i += ksnprintf(buf + i, N - i, __VA_ARGS__)
const char *(DescribeSigset)(char buf[N], int rc, const sigset_t *ss) {
bool gotsome;
int i, sig;
bool gotsome;
sigset_t sigset;
if (rc == -1) return "n/a";
@ -43,22 +45,22 @@ const char *(DescribeSigset)(char buf[N], int rc, const sigset_t *ss) {
sigset = *ss;
gotsome = false;
if (popcnt(sigset.__bits[0] & 0xffffffff) > 16) {
i += ksnprintf(buf + i, N - i, "~");
append("~");
sigset.__bits[0] = ~sigset.__bits[0];
sigset.__bits[1] = ~sigset.__bits[1];
}
i += ksnprintf(buf + i, N - i, "{");
append("{");
for (sig = 1; sig < 32; ++sig) {
if (sigismember(&sigset, sig)) {
if (gotsome) {
i += ksnprintf(buf + i, N - i, ",");
append(",");
} else {
gotsome = true;
}
i += ksnprintf(buf + i, N - i, "%s", strsignal(sig) + 3);
append("%s", strsignal(sig) + 3);
}
}
i += ksnprintf(buf + i, N - i, "}");
append("}");
return buf;
}