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Kernel: Fix poll() with timeout

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This commit is contained in:
Robin Burchell 2019-05-18 03:59:48 +02:00 • committed by Andreas Kling
parent b33cc7f772
commit 123283d840
1 changed files with 20 additions and 2 deletions
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22
Kernel/Process.cpp
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@ -1854,9 +1854,27 @@ int Process::sys$poll(pollfd* fds, int nfds, int timeout)
current->m_select_write_fds.append(fds[i].fd); current->m_select_write_fds.append(fds[i].fd);
} }
// FIXME: this should set m_select_timeout, right? if (timeout >= 0) {
if (timeout < 0) // poll is in ms, we want s/us.
struct timeval tvtimeout;
tvtimeout.tv_sec = 0;
while (timeout >= 1000) {
tvtimeout.tv_sec += 1;
timeout -= 1000;
}
tvtimeout.tv_usec = timeout * 1000;
struct timeval now;
kgettimeofday(now);
AK::timeval_add(&now, &tvtimeout, &current->m_select_timeout);
current->m_select_has_timeout = true;
} else {
current->m_select_has_timeout = false;
}
if (current->m_select_has_timeout || timeout < 0) {
current->block(Thread::State::BlockedSelect); current->block(Thread::State::BlockedSelect);
}
int fds_with_revents = 0; int fds_with_revents = 0;