Rewrite resource subsystem

kernel/proc/proc.h

@@ -8,6 +8,7 @@
 #include <libk/std.h>
 #include <proc/resource.h>
 #include <proc/suspension_q.h>
+#include <sync/rw_spin_lock.h>
 #include <sync/spin_lock.h>
 #include <sys/mm.h>
 
@@ -16,14 +17,11 @@
 #include <amd64/proc.h> /* USTACK_SIZE */
 #endif
 
-/* Process is ready to run */
-#define PROC_READY 0
-/* Process marked garbage collection */
-#define PROC_DEAD 1
-/* Process is suspended */
+/* process states */
+#define PROC_READY     0
+#define PROC_DEAD      1
 #define PROC_SUSPENDED 2
-
-#define PROC_RESOURCES_MAX 1024
+#define PROC_PSEUDO    3
 
 #define PROC_USTK_PREALLOC (1 << 0)
 
@@ -37,9 +35,11 @@ struct proc_mapping {
   size_t size;
 };
 
-struct proc_sys_rids {
+struct proc_resources {
   atomic_int refs;
-  atomic_int counter;
+  atomic_int sys_rids;
+  struct rb_node_link* tree;
+  rw_spin_lock_t lock;
 };
 
 struct proc {
@@ -56,9 +56,8 @@ struct proc {
   spin_lock_t lock;
   struct cpu* cpu;
   atomic_int state;
-  struct rb_node_link* resource_tree;
-  struct proc_sys_rids* sys_rids;
   struct proc_suspension_q* suspension_q;
+  struct proc_resources* resources;
 };
 
 void proc_suspend (struct proc* proc, struct proc_suspension_q* sq);
@@ -70,6 +69,7 @@ bool proc_map (struct proc* proc, uintptr_t start_paddr, uintptr_t start_vaddr,
 bool proc_unmap (struct proc* proc, uintptr_t start_vaddr, size_t pages);
 struct elf_aux proc_load_segments (struct proc* proc, uint8_t* elf);
 void proc_register (struct proc* proc, struct cpu* cpu);
+struct proc* proc_find_pid (int pid);
 void proc_init (void);
 
 #endif // _KERNEL_PROC_PROC_H