async_win.c

/*
 * Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
 */
/* ====================================================================
 * Copyright (c) 2015 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * ====================================================================
 */

/* This must be the first #include file */
#include "../async_locl.h"

#ifdef ASYNC_WIN

# include <windows.h>
# include "internal/cryptlib.h"

int ASYNC_is_capable(void)
{
    return 1;
}

void async_local_cleanup(void)
{
    async_ctx *ctx = async_get_ctx();
    if (ctx != NULL) {
        async_fibre *fibre = &ctx->dispatcher;
        if(fibre != NULL && fibre->fibre != NULL && fibre->converted) {
            ConvertFiberToThread();
            fibre->fibre = NULL;
        }
    }
}

int async_fibre_init_dispatcher(async_fibre *fibre)
{
    fibre->fibre = ConvertThreadToFiber(NULL);
    if (fibre->fibre == NULL) {
        fibre->converted = 0;
        fibre->fibre = GetCurrentFiber();
        if (fibre->fibre == NULL)
            return 0;
    } else {
        fibre->converted = 1;
    }

    return 1;
}

VOID CALLBACK async_start_func_win(PVOID unused)
{
    async_start_func();
}

#endif