diff options
Diffstat (limited to 'include/gc.h')
| -rw-r--r-- | include/gc.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/gc.h b/include/gc.h index 4063e794..7b9cbfe4 100644 --- a/include/gc.h +++ b/include/gc.h @@ -842,6 +842,8 @@ GC_API /* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2) void * GC_CALL # define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ GC_general_register_disappearing_link(link, \ GC_base((/* no const */ void *)(obj))) +# define GC_REGISTER_LONG_LINK(link, obj) \ + GC_register_long_link(link, GC_base((/* no const */ void *)(obj))) # define GC_REGISTER_DISPLACEMENT(n) GC_debug_register_displacement(n) #else # define GC_MALLOC_ATOMIC(sz) GC_malloc_atomic(sz) @@ -867,6 +869,8 @@ GC_API /* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2) void * GC_CALL # define GC_END_STUBBORN_CHANGE(p) GC_end_stubborn_change(p) # define GC_GENERAL_REGISTER_DISAPPEARING_LINK(link, obj) \ GC_general_register_disappearing_link(link, obj) +# define GC_REGISTER_LONG_LINK(link, obj) \ + GC_register_long_link(link, obj) # define GC_REGISTER_DISPLACEMENT(n) GC_register_displacement(n) #endif /* !GC_DEBUG */ @@ -1092,6 +1096,27 @@ GC_API int GC_CALL GC_unregister_disappearing_link(void ** /* link */); /* routines. Returns 0 if link was not actually */ /* registered (otherwise returns 1). */ +GC_API int GC_CALL GC_register_long_link(void ** /* link */, + const void * /* obj */) + GC_ATTR_NONNULL(1) GC_ATTR_NONNULL(2); + /* Similar to GC_general_register_disappearing_link but */ + /* *link only gets cleared when obj becomes truly */ + /* inaccessible. An object becomes truly inaccessible */ + /* when it can no longer be resurrected from its */ + /* finalizer (e.g. by assigning itself to a pointer */ + /* traceable from root). This can be used to implement */ + /* long weak pointers easily and safely. */ + +GC_API int GC_CALL GC_move_long_link(void ** /* link */, + void ** /* new_link */) + GC_ATTR_NONNULL(2); + /* Similar to GC_move_disappearing_link but for a link */ + /* previously registered via GC_register_long_link. */ + +GC_API int GC_CALL GC_unregister_long_link(void ** /* link */); + /* Similar to GC_unregister_disappearing_link but for a */ + /* registration by either of the above two routines. */ + /* Returns !=0 if GC_invoke_finalizers has something to do. */ GC_API int GC_CALL GC_should_invoke_finalizers(void); |