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Improve locks and signals

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- Introduce fast spinlock API
- Double rand64() perf w/ spinlock
- Improve raise() on New Technology
- Support gettid() across platforms
- Implement SA_NODEFER on New Technology
- Move the lock intrinsics into LIBC_INTRIN
- Make SIGTRAP recoverable on New Technology
- Block SIGCHLD in wait4() on New Technology
- Add threading prototypes for XNU and FreeBSD
- Rewrite abort() fixing its minor bugs on XNU/NT
- Shave down a lot of the content in libc/bits/bits.h
- Let signal handlers modify CPU registers on New Technology
This commit is contained in:
Justine Tunney 2022-04-12 05:20:17 -07:00
parent f68f1789bd
commit 046c7ebd4a
110 changed files with 1514 additions and 876 deletions
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2
libc/calls/samplepids.c
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@ -35,7 +35,7 @@ textwindows int __sample_pids(int pids[hasatleast 64],
bool exploratory) {
static uint64_t rando = 1;
uint32_t i, j, base, count;
base = KnuthLinearCongruentialGenerator(&rando);
base = KnuthLinearCongruentialGenerator(&rando) >> 32;
for (count = i = 0; i < g_fds.n; ++i) {
j = (base + i) % g_fds.n;
if (g_fds.p[j].kind == kFdProcess && (!exploratory || !g_fds.p[j].zombie)) {