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37 lines
881 B
C
37 lines
881 B
C
3 years ago
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#ifndef H_SCHED
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#define H_SCHED
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#include "../kernel.h"
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// process statuses:
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#define PROC_DEAD 0
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#define PROC_RDY 1
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#define PROC_WAIT_LOCK 2
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#define PROC_WAIT_PROC 3
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#define PROC_WAIT_SLEEP 4
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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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// scheduling information
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int status;
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int requested_lock;
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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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int scheduler_select_free();
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int scheduler_create_process(int binid);
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void __attribute__((noreturn)) scheduler_run_next();
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void __attribute__((noreturn)) scheduler_switch_to(int proc_index);
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int scheduler_index_from_pid(int pid);
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int* get_current_process_registers();
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#endif
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