Allocate a stack for an asynchronous job (POSIX custom stack allocator).
Declared in <openssl/async.h>
typedef void*(* ASYNC_stack_alloc_fn)(size_t*);Pointer to the allocated stack base, or NULL on failure.
| Name | Description |
|---|---|
| num | On entry, requested stack size in bytes; on return, actual size of the allocated stack. |