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Implement basic support for POSIX-style select().

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Now we can block on both the PTY *and* the GUI event stream in Terminal.
This commit is contained in:
Andreas Kling 2019-01-15 23:12:20 +01:00
parent 46181cf023
commit 10387beda7
8 changed files with 164 additions and 30 deletions
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16
Kernel/Scheduler.cpp
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@ -64,6 +64,22 @@ bool Scheduler::pick_next()
return true;
}
if (process.state() == Process::BlockedSelect) {
for (int fd : process.m_select_read_fds) {
if (process.m_fds[fd].descriptor->has_data_available_for_reading(process)) {
process.unblock();
return true;
}
}
for (int fd : process.m_select_write_fds) {
if (process.m_fds[fd].descriptor->can_write(process)) {
process.unblock();
return true;
}
}
return true;
}
if (process.state() == Process::Skip1SchedulerPass) {
process.set_state(Process::Skip0SchedulerPasses);
return true;