/* object. GC_oom_fn must not be 0. */
/* Both the supplied setter and the getter */
/* acquire the GC lock (to avoid data races). */
-GC_API void GC_CALL GC_set_oom_fn(GC_oom_func);
+GC_API void GC_CALL GC_set_oom_fn(GC_oom_func) GC_ATTR_NONNULL(1);
GC_API GC_oom_func GC_CALL GC_get_oom_fn(void);
typedef void (GC_CALLBACK * GC_on_heap_resize_proc)(GC_word /* new_size */);
GC_malloc_atomic(size_t /* size_in_bytes */);
GC_API GC_ATTR_MALLOC char * GC_CALL GC_strdup(const char *);
GC_API GC_ATTR_MALLOC char * GC_CALL
- GC_strndup(const char *, size_t);
+ GC_strndup(const char *, size_t) GC_ATTR_NONNULL(1);
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
GC_malloc_uncollectable(size_t /* size_in_bytes */);
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(2) void * GC_CALL
GC_memalign(size_t /* align */, size_t /* lb */);
GC_API int GC_CALL GC_posix_memalign(void ** /* memptr */, size_t /* align */,
- size_t /* lb */);
+ size_t /* lb */) GC_ATTR_NONNULL(1);
/* Explicitly deallocate an object. Dangerous if used incorrectly. */
/* Requires a pointer to the base of an object. */
/* allowing more than one stubborn object to be changed at once, but it */
/* is acceptable to do so. The same applies to dropping stubborn */
/* objects that are still changeable. */
-GC_API void GC_CALL GC_change_stubborn(const void *);
-GC_API void GC_CALL GC_end_stubborn_change(const void *);
+GC_API void GC_CALL GC_change_stubborn(const void *) GC_ATTR_NONNULL(1);
+GC_API void GC_CALL GC_end_stubborn_change(const void *) GC_ATTR_NONNULL(1);
/* Return a pointer to the base (lowest address) of an object given */
/* a pointer to a location within the object. */
/* Given a pointer to the base of an object, return its size in bytes. */
/* The returned size may be slightly larger than what was originally */
/* requested. */
-GC_API size_t GC_CALL GC_size(const void * /* object_addr */);
+GC_API size_t GC_CALL GC_size(const void * /* obj_addr */) GC_ATTR_NONNULL(1);
/* For compatibility with C library. This is occasionally faster than */
/* a malloc followed by a bcopy. But if you rely on that, either here */
/* The section (referred to by low_address) must be pointer-aligned. */
/* low_address must not be greater than high_address_plus_1. */
GC_API void GC_CALL GC_exclude_static_roots(void * /* low_address */,
- void * /* high_address_plus_1 */);
+ void * /* high_address_plus_1 */);
/* Clear the set of root segments. Wizards only. */
GC_API void GC_CALL GC_clear_roots(void);
/* GC_try_to_collect() returns 0 if the collection was aborted (or the */
/* collections are disabled), 1 if it succeeded. */
typedef int (GC_CALLBACK * GC_stop_func)(void);
-GC_API int GC_CALL GC_try_to_collect(GC_stop_func /* stop_func */);
+GC_API int GC_CALL GC_try_to_collect(GC_stop_func /* stop_func */)
+ GC_ATTR_NONNULL(1);
/* Set and get the default stop_func. The default stop_func is used by */
/* GC_gcollect() and by implicitly trigged collections (except for the */
/* case when handling out of memory). Must not be 0. */
/* Both the setter and getter acquire the GC lock to avoid data races. */
-GC_API void GC_CALL GC_set_stop_func(GC_stop_func /* stop_func */);
+GC_API void GC_CALL GC_set_stop_func(GC_stop_func /* stop_func */)
+ GC_ATTR_NONNULL(1);
GC_API GC_stop_func GC_CALL GC_get_stop_func(void);
/* Return the number of bytes in the heap. Excludes collector private */
GC_API GC_ATTR_MALLOC char * GC_CALL
GC_debug_strdup(const char *, GC_EXTRA_PARAMS);
GC_API GC_ATTR_MALLOC char * GC_CALL
- GC_debug_strndup(const char *, size_t, GC_EXTRA_PARAMS);
+ GC_debug_strndup(const char *, size_t, GC_EXTRA_PARAMS)
+ GC_ATTR_NONNULL(1);
GC_API GC_ATTR_MALLOC GC_ATTR_ALLOC_SIZE(1) void * GC_CALL
GC_debug_malloc_uncollectable(size_t /* size_in_bytes */,
GC_EXTRA_PARAMS);
GC_API void * GC_CALL GC_debug_realloc(void * /* old_object */,
size_t /* new_size_in_bytes */, GC_EXTRA_PARAMS)
/* 'realloc' attr */ GC_ATTR_ALLOC_SIZE(2);
-GC_API void GC_CALL GC_debug_change_stubborn(const void *);
-GC_API void GC_CALL GC_debug_end_stubborn_change(const void *);
+GC_API void GC_CALL GC_debug_change_stubborn(const void *) GC_ATTR_NONNULL(1);
+GC_API void GC_CALL GC_debug_end_stubborn_change(const void *)
+ GC_ATTR_NONNULL(1);
/* Routines that allocate objects with debug information (like the */
/* above), but just fill in dummy file and line number information. */
/* This might be unavailable on some targets (or not needed). */
/* wchar_t should be defined in stddef.h */
GC_API GC_ATTR_MALLOC wchar_t * GC_CALL
- GC_wcsdup(const wchar_t *);
+ GC_wcsdup(const wchar_t *) GC_ATTR_NONNULL(1);
GC_API GC_ATTR_MALLOC wchar_t * GC_CALL
- GC_debug_wcsdup(const wchar_t *, GC_EXTRA_PARAMS);
+ GC_debug_wcsdup(const wchar_t *, GC_EXTRA_PARAMS) GC_ATTR_NONNULL(1);
# ifdef GC_DEBUG
# define GC_WCSDUP(s) GC_debug_wcsdup(s, GC_EXTRAS)
# else
GC_API void GC_CALL GC_register_finalizer(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
GC_API void GC_CALL GC_debug_register_finalizer(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
/* When obj is no longer accessible, invoke */
/* (*fn)(obj, cd). If a and b are inaccessible, and */
/* a points to b (after disappearing links have been */
/* refers to the object itself. */
GC_API void GC_CALL GC_register_finalizer_ignore_self(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
GC_API void GC_CALL GC_debug_register_finalizer_ignore_self(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
/* Another version of the above. It ignores all cycles. */
/* It should probably only be used by Java implementations. */
/* refers to the object itself. */
GC_API void GC_CALL GC_register_finalizer_no_order(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
GC_API void GC_CALL GC_debug_register_finalizer_no_order(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
/* This is a special finalizer that is useful when an object's */
/* finalizer must be run when the object is known to be no */
/* unordered finalization (e.g. Java, C#). */
GC_API void GC_CALL GC_register_finalizer_unreachable(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
GC_API void GC_CALL GC_debug_register_finalizer_unreachable(void * /* obj */,
GC_finalization_proc /* fn */, void * /* cd */,
- GC_finalization_proc * /* ofn */, void ** /* ocd */);
+ GC_finalization_proc * /* ofn */, void ** /* ocd */)
+ GC_ATTR_NONNULL(1);
#define GC_NO_MEMORY 2 /* Failure due to lack of memory. */
/* where p is a pointer that is not followed by finalization */
/* code, and should not be considered in determining */
/* finalization order. */
-GC_API int GC_CALL GC_register_disappearing_link(void ** /* link */);
+GC_API int GC_CALL GC_register_disappearing_link(void ** /* link */)
+ GC_ATTR_NONNULL(1);
/* Link should point to a field of a heap allocated */
/* object obj. *link will be cleared when obj is */
/* found to be inaccessible. This happens BEFORE any */
/* Only exists for backward compatibility. See below: */
GC_API int GC_CALL GC_general_register_disappearing_link(void ** /* link */,
- const void * /* obj */);
+ const void * /* obj */)
+ GC_ATTR_NONNULL(1) GC_ATTR_NONNULL(2);
/* A slight generalization of the above. *link is */
/* cleared when obj first becomes inaccessible. This */
/* can be used to implement weak pointers easily and */
/* memory (and GC_oom_fn did not handle the problem). */
GC_API int GC_CALL GC_move_disappearing_link(void ** /* link */,
- void ** /* new_link */);
+ void ** /* new_link */)
+ GC_ATTR_NONNULL(2);
/* Moves a link previously registered via */
/* GC_general_register_disappearing_link (or */
/* GC_register_disappearing_link). Does not change the */
/* the GC lock (to avoid data races). */
typedef void (GC_CALLBACK * GC_warn_proc)(char * /* msg */,
GC_word /* arg */);
-GC_API void GC_CALL GC_set_warn_proc(GC_warn_proc /* p */);
+GC_API void GC_CALL GC_set_warn_proc(GC_warn_proc /* p */) GC_ATTR_NONNULL(1);
/* GC_get_warn_proc returns the current warn_proc. */
GC_API GC_warn_proc GC_CALL GC_get_warn_proc(void);
typedef void * (GC_CALLBACK * GC_fn_type)(void * /* client_data */);
GC_API void * GC_CALL GC_call_with_alloc_lock(GC_fn_type /* fn */,
- void * /* client_data */);
+ void * /* client_data */) GC_ATTR_NONNULL(1);
/* These routines are intended to explicitly notify the collector */
/* of new threads. Often this is unnecessary because thread creation */
/* be used to provide a sufficiently accurate stack base. And we */
/* implement it everywhere. */
GC_API void * GC_CALL GC_call_with_stack_base(GC_stack_base_func /* fn */,
- void * /* arg */);
+ void * /* arg */) GC_ATTR_NONNULL(1);
#define GC_SUCCESS 0
#define GC_DUPLICATE 1 /* Was already registered. */
/* latter case, the explicit call is normally required for threads */
/* created by third-party libraries. */
/* A manually registered thread requires manual unregistering. */
- GC_API int GC_CALL GC_register_my_thread(const struct GC_stack_base *);
+ GC_API int GC_CALL GC_register_my_thread(const struct GC_stack_base *)
+ GC_ATTR_NONNULL(1);
/* Return TRUE if and only if the calling thread is registered with */
/* the garbage collector. */
/* allowed for fn to call GC_call_with_gc_active() (even recursively), */
/* thus temporarily toggling the collector's state back to "active". */
GC_API void * GC_CALL GC_do_blocking(GC_fn_type /* fn */,
- void * /* client_data */);
+ void * /* client_data */) GC_ATTR_NONNULL(1);
/* Call a function switching to the "active" state of the collector for */
/* the current thread (i.e. the user function is allowed to call any */
/* GC_do_blocking. GC_call_with_gc_active() often can be used to */
/* provide a sufficiently accurate stack base. */
GC_API void * GC_CALL GC_call_with_gc_active(GC_fn_type /* fn */,
- void * /* client_data */);
+ void * /* client_data */) GC_ATTR_NONNULL(1);
/* Attempt to fill in the GC_stack_base structure with the stack base */
/* for this thread. This appears to be required to implement anything */
/* It is also unfortunately hard to implement well on many platforms. */
/* Returns GC_SUCCESS or GC_UNIMPLEMENTED. This function acquires the */
/* GC lock on some platforms. */
-GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *);
+GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *)
+ GC_ATTR_NONNULL(1);
/* The following routines are primarily intended for use with a */
/* preprocessor which inserts calls to check C pointer arithmetic. */
/* the second argument is in units of bytes, not multiples of the */
/* object size. This should either be invoked from a macro, or the */
/* call should be automatically generated. */
-GC_API void * GC_CALL GC_pre_incr(void **, ptrdiff_t /* how_much */);
-GC_API void * GC_CALL GC_post_incr(void **, ptrdiff_t /* how_much */);
+GC_API void * GC_CALL GC_pre_incr(void **, ptrdiff_t /* how_much */)
+ GC_ATTR_NONNULL(1);
+GC_API void * GC_CALL GC_post_incr(void **, ptrdiff_t /* how_much */)
+ GC_ATTR_NONNULL(1);
/* Check that p is visible */
/* to the collector as a possibly pointer containing location. */
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