585abe9a18
Now any initrd file is treated like a program image and passed to the loader to load as a process. Very rudimentary elf loading just allocates pages, copies sections, and sets the ELF's entrypoint as the RIP to iretq to.
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
#pragma once
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/// \file scheduler.h
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/// The task scheduler and related definitions
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#include "kutil/memory.h"
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#include "kutil/vector.h"
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class lapic;
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struct page_table;
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struct process
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{
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uint16_t pid;
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addr_t rsp;
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page_table *pml4;
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};
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/// The task scheduler
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class scheduler
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{
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public:
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/// Constructor.
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/// \arg apic Pointer to the local APIC object
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scheduler(lapic *apic);
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/// Create a new process from a program image in memory.
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/// \arg name Name of the program image
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/// \arg data Pointer to the image data
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/// \arg size Size of the program image, in bytes
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void create_process(const char *name, const void *data, size_t size);
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/// Start the scheduler working. This may involve starting
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/// timer interrupts or other preemption methods.
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void start();
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/// Handle a timer tick
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/// \arg rsp0 The stack pointer of the current interrupt handler
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/// \returns The stack pointer to handler to switch to
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addr_t tick(addr_t rsp0);
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/// Get a reference to the system scheduler
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/// \returns A reference to the global system scheduler
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static scheduler & get() { return s_instance; }
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private:
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lapic *m_apic;
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kutil::vector<process> m_processes;
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uint16_t m_current;
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uint16_t m_next_pid;
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static scheduler s_instance;
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};
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