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16812f0f98
The idea of all processes reliably having a main thread was nice in some ways, but cumbersome in others. More importantly, it didn't match up with POSIX thread semantics, so let's move away from it. This thread gets rid of Process::main_thread() and you now we just have a bunch of Thread objects floating around each Process. When the finalizer nukes the last Thread in a Process, it will also tear down the Process. There's a bunch of more things to fix around this, but this is where we get started :^)
51 lines
1.3 KiB
C++
51 lines
1.3 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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class WaitQueue;
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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 Thread* g_colonel;
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extern WaitQueue* g_finalizer_wait_queue;
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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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static void idle_loop();
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static void stop_idling();
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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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