| /* |
| * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| /* This must be the first #include file */ |
| #include "../async_local.h" |
| |
| #ifdef ASYNC_POSIX |
| |
| # include <stddef.h> |
| # include <unistd.h> |
| |
| #define STACKSIZE 32768 |
| |
| int ASYNC_is_capable(void) |
| { |
| ucontext_t ctx; |
| |
| /* |
| * Some platforms provide getcontext() but it does not work (notably |
| * MacOSX PPC64). Check for a working getcontext(); |
| */ |
| return getcontext(&ctx) == 0; |
| } |
| |
| void async_local_cleanup(void) |
| { |
| } |
| |
| int async_fibre_makecontext(async_fibre *fibre) |
| { |
| fibre->env_init = 0; |
| if (getcontext(&fibre->fibre) == 0) { |
| fibre->fibre.uc_stack.ss_sp = OPENSSL_malloc(STACKSIZE); |
| if (fibre->fibre.uc_stack.ss_sp != NULL) { |
| fibre->fibre.uc_stack.ss_size = STACKSIZE; |
| fibre->fibre.uc_link = NULL; |
| makecontext(&fibre->fibre, async_start_func, 0); |
| return 1; |
| } |
| } else { |
| fibre->fibre.uc_stack.ss_sp = NULL; |
| } |
| return 0; |
| } |
| |
| void async_fibre_free(async_fibre *fibre) |
| { |
| OPENSSL_free(fibre->fibre.uc_stack.ss_sp); |
| fibre->fibre.uc_stack.ss_sp = NULL; |
| } |
| |
| #endif |
