48 lines
1.9 KiB
C
48 lines
1.9 KiB
C
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// TODO: CHECK/REPLACE/UPDATE OLD CODE (this file is based on xv6)
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#include "fpu.h"
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#include "sched.h"
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#include "fsinstance.h"
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#define PROC_NAME_SIZE 16
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// Per-process state
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struct proc {
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sched_spinlock_t lock;
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// p->lock must be held when using these:
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sched_state_t state; // Process state
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void *chan; // If non-zero, sleeping on chan
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int killed; // If non-zero, have been killed
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int prio; // Priority level
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int maxprio; // Maximum priority level (LOWEST number the program can set)
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int xstate; // Exit status to be returned to parent's wait
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int pid; // Process ID
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int cwdrive; // Current drive index, paired to cwd
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struct drives* drives; // Drives structure, could differ in the future
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int timeslice;
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int reserved;
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// wait_lock must be held when using this:
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struct proc *parent; // Parent process
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struct proc *mainthread; // Pointer to the main-thread process (possibly this or parent) or 0 if single-threaded
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// these are private to the process, so p->lock need not be held.
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uint64 kstack; // Virtual address of kernel stack
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uint64 sz; // Size of process memory (bytes)
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pagetable_t pagetable; // User page table
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sched_frame_t *trapframe; // data page for trampoline.S
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sched_context_t context;
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//struct context context; // swtch() here to run process
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fpu_context_t fpu_context;
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struct file *ofile[NOFILE]; // Open files
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fsinstance_inode_t *cwd; // Current directory
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int fpu_active;
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int fpu_saved;
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char name[PROC_NAME_SIZE]; // Process name (debugging)
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// this in theory should maybe lock on affinity_lock, but is probably safe to test without locking (what is the worst case scenario?)
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uint64 affinitymask; // Mask of whether this process should run on CPU #0 to #63 (this can be extended)
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};
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