Lab 15 completed

cc89b9e1 · benkma · 6ac63998 · cc89b9e1
Commit cc89b9e1 authored May 21, 2021 by benkma
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kernel.cc kernel.cc +3 -0

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--- a/kernel.cc
+++ b/kernel.cc
@@ -384,6 +384,9 @@ int proc::syscall_sleep(uint64_t msec){
    unsigned long now = ticks;
    unsigned long end = round_up(now,10) + msec;
    while (now < end) {
+        if (!ptable[ppid_]->exited_.empty() || !this->exited_.empty()) {
+            return E_INTR;
+        } 
        yield();
        now = ticks;
    }