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orbis-kernel: unblock signals only on wait operations

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implement sys_cpuset_getaffinity, sys_cpuset_setaffinity, sys_rtprio_thread
fix hang on sys_select
simplify sys_thr_*_ucontext
This commit is contained in:
DH 2024-11-13 21:53:05 +03:00
parent c19c70eb77
commit 9fbe1846c0
21 changed files with 675 additions and 236 deletions
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20
orbis-kernel/src/utils/SharedCV.cpp
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@ -17,17 +17,23 @@ std::errc shared_cv::impl_wait(shared_mutex &mutex, unsigned _val,
std::errc result = {};
bool useTimeout = usec_timeout != static_cast<std::uint64_t>(-1);
while (true) {
result = m_value.wait(_val, usec_timeout == static_cast<std::uint64_t>(-1)
? std::chrono::microseconds::max()
: std::chrono::microseconds(usec_timeout));
result =
m_value.wait(_val, useTimeout ? std::chrono::microseconds(usec_timeout)
: std::chrono::microseconds::max());
bool spurious = result == std::errc::resource_unavailable_try_again ||
result == std::errc::interrupted;
// Cleanup
const auto old = m_value.fetch_op([&](unsigned &value) {
// Remove waiter if no signals
if (!(value & ~c_waiter_mask) &&
result != std::errc::resource_unavailable_try_again) {
value -= 1;
if ((value & ~c_waiter_mask) == 0) {
if (useTimeout || !spurious) {
value -= 1;
}
}
// Try to remove signal
@ -60,7 +66,7 @@ std::errc shared_cv::impl_wait(shared_mutex &mutex, unsigned _val,
#endif
// Possibly spurious wakeup
if (result != std::errc::resource_unavailable_try_again) {
if (useTimeout || !spurious) {
break;
}