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Kernel: Move block condition evaluation out of the Scheduler

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This makes the Scheduler a lot leaner by not having to evaluate
block conditions every time it is invoked. Instead evaluate them as
the states change, and unblock threads at that point.

This also implements some more waitid/waitpid/wait features and
behavior. For example, WUNTRACED and WNOWAIT are now supported. And
wait will now not return EINTR when SIGCHLD is delivered at the
same time.
This commit is contained in:
Tom 2020-11-29 16:05:27 -07:00 • committed by Andreas Kling
parent 6a620562cc
commit 046d6855f5
53 changed files with 2027 additions and 930 deletions
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8
Kernel/Net/NetworkTask.cpp
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@ -187,13 +187,7 @@ void handle_arp(const EthernetFrameHeader& eth, size_t frame_size)
// Someone has this IPv4 address. I guess we can try to remember that.
// FIXME: Protect against ARP spamming.
// FIXME: Support static ARP table entries.
LOCKER(arp_table().lock());
arp_table().resource().set(packet.sender_protocol_address(), packet.sender_hardware_address());
klog() << "ARP table (" << arp_table().resource().size() << " entries):";
for (auto& it : arp_table().resource()) {
klog() << it.value.to_string().characters() << " :: " << it.key.to_string().characters();
}
update_arp_table(packet.sender_protocol_address(), packet.sender_hardware_address());
}
if (packet.operation() == ARPOperation::Request) {