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Kernel: Keep signal state in sync
In c3d231616c
we added the atomic variable
m_have_any_unmasked_pending_signals tracking the state of pending signals.
Add helper functions that automatically update this variable as needed.
This commit is contained in:
parent
dcc2c8a125
commit
92bfe40954
5 changed files with 84 additions and 19 deletions
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@ -24,7 +24,7 @@
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/ScopedValueRollback.h>
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#include <AK/ScopeGuard.h>
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#include <AK/Time.h>
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#include <Kernel/FileSystem/FileDescription.h>
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#include <Kernel/Process.h>
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@ -73,9 +73,14 @@ int Process::sys$select(const Syscall::SC_select_params* params)
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}
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auto current_thread = Thread::current();
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ScopedValueRollback scoped_sigmask(current_thread->m_signal_mask);
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u32 previous_signal_mask = 0;
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if (sigmask)
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current_thread->m_signal_mask = *sigmask;
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previous_signal_mask = current_thread->update_signal_mask(*sigmask);
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ScopeGuard rollback_signal_mask([&]() {
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if (sigmask)
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current_thread->update_signal_mask(previous_signal_mask);
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});
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Thread::SelectBlocker::FDVector rfds;
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Thread::SelectBlocker::FDVector wfds;
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@ -187,9 +192,14 @@ int Process::sys$poll(Userspace<const Syscall::SC_poll_params*> user_params)
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}
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auto current_thread = Thread::current();
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ScopedValueRollback scoped_sigmask(current_thread->m_signal_mask);
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u32 previous_signal_mask = 0;
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if (params.sigmask)
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current_thread->m_signal_mask = sigmask;
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previous_signal_mask = current_thread->update_signal_mask(params.sigmask);
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ScopeGuard rollback_signal_mask([&]() {
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if (params.sigmask)
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current_thread->update_signal_mask(previous_signal_mask);
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});
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#if defined(DEBUG_IO) || defined(DEBUG_POLL_SELECT)
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dbg() << "polling on (read:" << rfds.size() << ", write:" << wfds.size() << "), timeout=" << timeout.tv_sec << "s" << timeout.tv_nsec << "ns";
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