81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
#pragma once
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#include <BAN/NoCopyMove.h>
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#include <BAN/RefPtr.h>
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#include <sys/types.h>
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namespace Kernel
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{
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class Process;
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class Thread
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{
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BAN_NON_COPYABLE(Thread);
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BAN_NON_MOVABLE(Thread);
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public:
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using entry_t = void(*)(void*);
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enum class State
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{
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NotStarted,
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Executing,
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Terminating,
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};
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public:
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static BAN::ErrorOr<Thread*> create(entry_t, void*, Process*);
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static BAN::ErrorOr<Thread*> create_userspace(uintptr_t, Process*);
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~Thread();
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void jump_userspace(uintptr_t rip);
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pid_t tid() const { return m_tid; }
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void set_rsp(uintptr_t rsp) { m_rsp = rsp; validate_stack(); }
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void set_rip(uintptr_t rip) { m_rip = rip; }
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uintptr_t rsp() const { return m_rsp; }
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uintptr_t rip() const { return m_rip; }
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void set_started() { ASSERT(m_state == State::NotStarted); m_state = State::Executing; }
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State state() const { return m_state; }
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void terminate() { m_state = State::Terminating; }
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uintptr_t stack_base() const { return (uintptr_t)m_stack_base; }
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size_t stack_size() const { return m_stack_size; }
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uintptr_t interrupt_stack_base() const { return (uintptr_t)m_interrupt_stack; }
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uintptr_t interrupt_stack_size() const { return m_interrupt_stack_size; }
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static Thread& current() ;
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Process& process();
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bool has_process() const { return m_process; }
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void set_in_syscall(bool b) { m_in_syscall = b; }
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private:
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Thread(pid_t tid, Process*);
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void validate_stack() const;
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BAN::ErrorOr<void> initialize(entry_t, void*);
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void on_exit();
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private:
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static constexpr size_t m_stack_size = 4096 * 1;
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static constexpr size_t m_interrupt_stack_size = 4096;
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void* m_interrupt_stack { nullptr };
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void* m_stack_base { nullptr };
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uintptr_t m_rip { 0 };
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uintptr_t m_rsp { 0 };
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const pid_t m_tid { 0 };
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State m_state { State::NotStarted };
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Process* m_process { nullptr };
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bool m_in_syscall { false };
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friend class Scheduler;
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};
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} |