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1f9b8f0e7c
Each Function is a heap allocation, so let's make an effort to avoid doing that during scheduling. Because of header dependencies, I had to put the runnables iteration helpers in Thread.h, which is a bit meh but at least this cuts out all the kmalloc() traffic in pick_next().
46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#pragma once
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#include <AK/Assertions.h>
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#include <AK/Types.h>
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#include <AK/Function.h>
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#include <AK/IntrusiveList.h>
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class Process;
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class Thread;
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struct RegisterDump;
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struct SchedulerData;
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extern Thread* current;
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extern Thread* g_last_fpu_thread;
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extern Thread* g_finalizer;
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extern u64 g_uptime;
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extern SchedulerData* g_scheduler_data;
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class Scheduler {
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public:
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static void initialize();
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static void timer_tick(RegisterDump&);
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static bool pick_next();
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static void pick_next_and_switch_now();
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static void switch_now();
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static bool yield();
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static bool donate_to(Thread*, const char* reason);
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static bool context_switch(Thread&);
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static void prepare_to_modify_tss(Thread&);
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static Process* colonel();
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static bool is_active();
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static void beep();
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template<typename Callback>
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static inline IterationDecision for_each_runnable(Callback);
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template<typename Callback>
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static inline IterationDecision for_each_nonrunnable(Callback);
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static void init_thread(Thread& thread);
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static void update_state_for_thread(Thread& thread);
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private:
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static void prepare_for_iret_to_new_process();
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};
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