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