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40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
#ifndef H_SCHED
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#define H_SCHED
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#include "../kernel.h"
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enum process_status {
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PROC_DEAD = 0,
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PROC_RDY = 1,
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PROC_WAIT_PROC = 2,
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PROC_WAIT_SLEEP = 3,
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};
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// process structure:
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typedef struct ProcessControlBlock ProcessControlBlock;
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struct ProcessControlBlock {
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int pid;
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int pc;
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int regs[31];
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int exit_code;
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// scheduling information
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enum process_status status;
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ProcessControlBlock *waiting_for_process;
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unsigned long long int asleep_until;
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};
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// scheduling data:
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extern ProcessControlBlock processes[PROCESS_COUNT];
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// scheduler methods
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ProcessControlBlock* scheduler_select_free();
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int scheduler_create_process(int binid);
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void set_next_interrupt();
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void __attribute__((noreturn)) scheduler_run_next();
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void __attribute__((noreturn)) scheduler_try_return_to(ProcessControlBlock*);
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void __attribute__((noreturn)) scheduler_switch_to(ProcessControlBlock*);
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int scheduler_index_from_pid(int pid);
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int* get_current_process_registers();
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ProcessControlBlock* get_current_process();
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void mark_ecall_entry();
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#endif |