/* * 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 |