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Implement a basic way for read() to block.

FileHandle gets a hasDataAvailableForRead() getter.
If this returns true in sys$read(), the task will block(BlockedRead) + yield.
The fd blocked on is stored in Task::m_fdBlockedOnRead.
The scheduler then looks at the state of that fd during the unblock phase.

This makes "sh" restful. :^)

There's still some problem with the kernel not surviving the colonel task
getting scheduled. I need to figure that out and fix it.
This commit is contained in:
Andreas Kling 2018-10-25 13:07:59 +02:00
parent ba56f4afde
commit c6f2890d8e
18 changed files with 86 additions and 17 deletions

View file

@ -165,7 +165,7 @@ static void init_stage2()
#endif
for (;;) {
sleep(3600 * TICKS_PER_SECOND);
//sleep(3600 * TICKS_PER_SECOND);
asm("hlt");
}
}