Organize resources into process groups

kernel/proc/proc.h

@@ -6,6 +6,7 @@
 #include <libk/list.h>
 #include <libk/rbtree.h>
 #include <libk/std.h>
+#include <proc/procgroup.h>
 #include <proc/resource.h>
 #include <proc/suspension_q.h>
 #include <sync/rw_spin_lock.h>
@@ -23,25 +24,11 @@
 #define PROC_SUSPENDED 2
 #define PROC_PSEUDO    3
 
+/* process flags */
 #define PROC_USTK_PREALLOC (1 << 0)
 
 struct cpu;
 
-struct proc_mapping {
-  struct list_node_link proc_mappings_link;
-
-  uintptr_t paddr;
-  uintptr_t vaddr;
-  size_t size;
-};
-
-struct proc_resources {
-  atomic_int refs;
-  atomic_int sys_rids;
-  struct rb_node_link* tree;
-  rw_spin_lock_t lock;
-};
-
 struct proc_sq_entry {
   struct list_node_link sq_link;
   struct list_node_link proc_link;
@@ -52,18 +39,16 @@ struct proc_sq_entry {
 struct proc {
   int pid;
   struct rb_node_link proc_tree_link;
+  struct rb_node_link procgroup_memb_tree_link;
   struct list_node_link cpu_run_q_link;
   struct list_node_link reap_link;
   struct list_node_link* sq_entries;
-
-  struct list_node_link* mappings; /* pd.lock implicitly protects this field */
+  struct procgroup* procgroup;
   struct proc_platformdata pdata;
   uint32_t flags;
-  struct pd* pd;
   spin_lock_t lock;
   struct cpu* cpu;
   atomic_int state;
-  struct proc_resources* resources;
 };
 
 void proc_sched (void);