Function scratchstack_wrapper_aws_c_io::aws_hash_table_foreach

pub unsafe extern "C" fn aws_hash_table_foreach(
    map: *mut aws_hash_table,
    callback: Option<unsafe extern "C" fn(context: *mut c_void, p_element: *mut aws_hash_element) -> c_int>,
    context: *mut c_void
) -> c_int

Iterates through every element in the map and invokes the callback on that item. Iteration is performed in an arbitrary, implementation-defined order, and is not guaranteed to be consistent across invocations.

The callback may change the value associated with the key by overwriting the value pointed-to by value. In this case, the on_element_removed callback will not be invoked, unless the callback invokes AWS_COMMON_HASH_TABLE_ITER_DELETE (in which case the on_element_removed is given the updated value).

The callback must return a bitmask of zero or more of the following values ORed together:

AWS_COMMON_HASH_TABLE_ITER_CONTINUE - Continues iteration to the next

element (if not set, iteration stops)

AWS_COMMON_HASH_TABLE_ITER_DELETE - Deletes the current value and

continues iteration.  destroy_fn will NOT be invoked.

AWS_COMMON_HASH_TABLE_ITER_ERROR - Stop iteration with error.

No action will be taken for the current value and the value before this.
No rolling back. The deleted value before will NOT be back.
aws_hash_table_foreach returns AWS_OP_ERR after stropping the iteration.

Invoking any method which may change the contents of the hashtable during iteration results in undefined behavior. However, you may safely invoke non-mutating operations during an iteration.

This operation is mutating only if AWS_COMMON_HASH_TABLE_ITER_DELETE is returned at some point during iteration. Otherwise, it is non-mutating and is safe to invoke in parallel with other non-mutating operations.