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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.
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18 changed files with 86 additions and 17 deletions
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@ -165,7 +165,7 @@ static void init_stage2()
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#endif
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for (;;) {
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sleep(3600 * TICKS_PER_SECOND);
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//sleep(3600 * TICKS_PER_SECOND);
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asm("hlt");
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}
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}
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