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LibC: Implement pselect

Browse source 
pselect() is similar() to select(), but it takes its timeout
as timespec instead of as timeval, and it takes an additional
sigmask parameter.

Change the sys$select parameters to match pselect() and implement
select() in terms of pselect().
This commit is contained in:
Nico Weber 2020-06-21 13:54:41 -04:00 • committed by Andreas Kling
parent 29f509a2a0
commit d23e655c83
6 changed files with 46 additions and 19 deletions
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6
Kernel/Scheduler.cpp
View file

@ -210,8 +210,8 @@ bool Thread::SleepBlocker::should_unblock(Thread&, time_t, long)
return m_wakeup_time <= g_uptime;
}
Thread::SelectBlocker::SelectBlocker(const timeval& tv, bool select_has_timeout, const FDVector& read_fds, const FDVector& write_fds, const FDVector& except_fds)
: m_select_timeout(tv)
Thread::SelectBlocker::SelectBlocker(const timespec& ts, bool select_has_timeout, const FDVector& read_fds, const FDVector& write_fds, const FDVector& except_fds)
: m_select_timeout(ts)
, m_select_has_timeout(select_has_timeout)
, m_select_read_fds(read_fds)
, m_select_write_fds(write_fds)
@ -222,7 +222,7 @@ Thread::SelectBlocker::SelectBlocker(const timeval& tv, bool select_has_timeout,
bool Thread::SelectBlocker::should_unblock(Thread& thread, time_t now_sec, long now_usec)
{
if (m_select_has_timeout) {
if (now_sec > m_select_timeout.tv_sec || (now_sec == m_select_timeout.tv_sec && now_usec >= m_select_timeout.tv_usec))
if (now_sec > m_select_timeout.tv_sec || (now_sec == m_select_timeout.tv_sec && now_usec * 1000 >= m_select_timeout.tv_nsec))
return true;
}