ASYNC_set_mem_functions

Install custom stack allocators used for ASYNC jobs on POSIX.

Synopsis

Declared in <openssl/async.h>

int
ASYNC_set_mem_functions(
    ASYNC_stack_alloc_fn alloc_fn,
    ASYNC_stack_free_fn free_fn);

Description

Must be called before any asynchronous job allocates a stack. On unsupported platforms the call fails and the defaults remain in effect.

Return Value

1 if custom allocators are supported and none have been used yet, or 0 otherwise.

Parameters

NameDescription
alloc_fnAllocator called when OpenSSL needs a job stack, or NULL for the default.
free_fnMatching free callback for stacks returned by alloc_fn, or NULL for the default.