make syscall use non-locking mutexes

1 files changed, 5 insertions, 0 deletions

diff --git a/hal/obj.h b/hal/obj.h
index 151f4eb..68f4bdc 100644
--- a/hal/obj.h
+++ b/hal/obj.h
@@ -16,6 +16,7 @@ typedef struct jove_objdir
 
 /*Locks the mutex of the kernel object provided. Returns the locked version. */
 jove_owned_obj_t *obj_take(jove_obj_t *obj);
+jove_owned_obj_t *obj_trytake(jove_obj_t *obj);
 /*Unlocks the mutex of the kernel object provided. Returns the unlocked version. */
 jove_obj_t *obj_release(jove_owned_obj_t *obj);
 
@@ -35,6 +36,8 @@ void obj_setvalue(jove_owned_obj_t *obj, uintmax_t value);
  * If the passed object is not an objdir, returns NULL and sets errno to EBADOBJ.
  * If the passed entry index is out of bounds, returns NULL and sets errno to EOOB.*/
 jove_owned_obj_t *objdir_getlocal(jove_owned_obj_t *objdir_obj, uint16_t entry);
+/*Same as objdir_getlocal except does not block if entry obj is taken.*/
+jove_owned_obj_t *objdir_trygetlocal(jove_owned_obj_t *objdir_obj, uint16_t entry);
 jove_obj_t objdir_peeklocal(jove_owned_obj_t *objdir_obj, uint16_t entry);
 
 /*Recursively seeks through an object directory for an object following the passed
@@ -45,5 +48,7 @@ jove_obj_t objdir_peeklocal(jove_owned_obj_t *objdir_obj, uint16_t entry);
  * returns NULL and sets errno to EBADOBJ.
  * If any entry in the path is out of bounds, returns NULL and sets errno to EBADOBJ.*/
 jove_owned_obj_t *objdir_getobj(jove_owned_obj_t *objdir_obj, const uint16_t *path, size_t path_len);
+/*Same as objdir_getobj but does not block if child objects are locked.*/
+jove_owned_obj_t *objdir_trygetobj(jove_owned_obj_t *objdir_obj, const uint16_t *path, size_t path_len);
 
 #endif