Kernel processes / multitasking

kernel/proc/proc.h

@@ -0,0 +1,44 @@
+#ifndef PROC_PROC_H_
+#define PROC_PROC_H_
+
+#include <stdint.h>
+#include "hal/hal.h"
+#include "vmm/vmm.h"
+#include "spinlock/spinlock.h"
+#include "bitmap/bitmap.h"
+
+#define PROC_NAME_MAX 0x100
+
+#define PROC_STACKBLOCKS 32
+#define PROC_STACKSIZE (PROC_STACKBLOCKS * BITMAP_BLOCK_SIZE)
+
+enum {
+  PROC_READY,
+  PROC_RUNNING,
+  PROC_ZOMBIE,
+  PROC_WAITING,
+};
+
+typedef struct Proc {
+  struct Proc *next;
+  uint64_t pid;
+  char name[PROC_NAME_MAX];
+  ProcPlatformData platformdata;
+  uint8_t state;
+  VasRange *vas;
+  bool kern;
+} Proc;
+
+typedef struct {
+  SpinLock spinlock;
+  Proc *procs;
+  Proc *current;
+} Procs;
+
+extern Procs PROCS;
+
+void proc_init(void);
+Proc *proc_spawnkern(void (*ent)(void), char *name);
+void proc_sched(void *cpustate);
+
+#endif // PROC_PROC_H_