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44 lines
1018 B
44 lines
1018 B
#pragma once
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#include "gp/vfs/system.hpp"
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namespace gp{
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class simple_lockfree_scheduling : gp::scheduling_scheme {
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gp::topic_list running;
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gp::topic_list waiting;
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gp::topic_list to_clean;
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gp::topic_list naughty;
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scheduler me;
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public:
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virtual gp::topic_list::node_ptr one(size_t) {
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auto v = running.try_pop();
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do{
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if(v) return v;
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v = running.try_pop();
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}while(true);
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}
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virtual gp::topic_list::node_ptr next(size_t, gp::topic_list::node_ptr current) {
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switch(current->value->state) {
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case process_status::inactive:
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case process_status::running:
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do{}while(!running.try_push(current));
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break;
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case process_status::finished:
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do{}while(!to_clean.try_push(current));
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break;
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case process_status::zombie:
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do{}while(!naughty.try_push(current));
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break;
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case process_status::waiting:
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do{}while(!waiting.try_push(current));
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break;
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}
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return one(0);
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}
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virtual gp::scheduler& current_scheduler() {
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return me;
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}
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};
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}
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