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arcbox: Document that implementing weak references via the clear_func is not safe

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Sebastian Dröge 2024-10-27 12:58:08 +02:00 committed by Philip Withnall
parent de7779fbd3
commit 546b15312f
1 changed files with 5 additions and 0 deletions
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glib/garcbox.c
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@ -207,6 +207,11 @@ g_atomic_rc_box_release (gpointer mem_block)
* to clear the contents of @mem_block, and then will free the * to clear the contents of @mem_block, and then will free the
* resources allocated for @mem_block. * resources allocated for @mem_block.
* *
* Note that implementing weak references via @clear_func is not thread-safe:
* clearing a pointer to the memory from the callback can race with another
* thread trying to access it as @mem_block already has a reference count of 0
* when the callback is called and will be freed.
*
* Since: 2.58 * Since: 2.58
*/ */
void void