2 * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* This must be the first #include file */
11 #include "../async_locl.h"
18 #define STACKSIZE 32768
20 int ASYNC_is_capable(void)
25 * Some platforms provide getcontext() but it does not work (notably
26 * MacOSX PPC64). Check for a working getcontext();
28 return getcontext(&ctx) == 0;
31 void async_local_cleanup(void)
35 int async_fibre_makecontext(async_fibre *fibre)
38 if (getcontext(&fibre->fibre) == 0) {
39 fibre->fibre.uc_stack.ss_sp = OPENSSL_malloc(STACKSIZE);
40 if (fibre->fibre.uc_stack.ss_sp != NULL) {
41 fibre->fibre.uc_stack.ss_size = STACKSIZE;
42 fibre->fibre.uc_link = NULL;
43 makecontext(&fibre->fibre, async_start_func, 0);
47 fibre->fibre.uc_stack.ss_sp = NULL;
52 void async_fibre_free(async_fibre *fibre)
54 OPENSSL_free(fibre->fibre.uc_stack.ss_sp);
55 fibre->fibre.uc_stack.ss_sp = NULL;