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- /*
- * 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,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- */
- /* This must be the first #include file */
- #include "../async_locl.h"
- #ifdef ASYNC_WIN
- # include <windows.h>
- # include "internal/cryptlib.h"
- struct winpool {
- STACK_OF(ASYNC_JOB) *pool;
- size_t curr_size;
- size_t max_size;
- };
- static DWORD asyncwinpool = 0;
- static DWORD asyncwinctx = 0;
- static DWORD asyncwindispatch = 0;
- void async_start_func(void);
- int async_global_init(void)
- {
- asyncwinpool = TlsAlloc();
- asyncwinctx = TlsAlloc();
- asyncwindispatch = TlsAlloc();
- if (asyncwinpool == TLS_OUT_OF_INDEXES || asyncwinctx == TLS_OUT_OF_INDEXES
- || asyncwindispatch == TLS_OUT_OF_INDEXES) {
- if (asyncwinpool != TLS_OUT_OF_INDEXES) {
- TlsFree(asyncwinpool);
- }
- if (asyncwinctx != TLS_OUT_OF_INDEXES) {
- TlsFree(asyncwinctx);
- }
- if (asyncwindispatch != TLS_OUT_OF_INDEXES) {
- TlsFree(asyncwindispatch);
- }
- return 0;
- }
- return 1;
- }
- int async_local_init(void)
- {
- return (TlsSetValue(asyncwinpool, NULL) != 0)
- && (TlsSetValue(asyncwinctx, NULL) != 0)
- && (TlsSetValue(asyncwindispatch, NULL) != 0);
- }
- 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;
- }
- }
- }
- void async_global_cleanup(void)
- {
- TlsFree(asyncwinpool);
- TlsFree(asyncwinctx);
- TlsFree(asyncwindispatch);
- asyncwinpool = 0;
- asyncwinctx = 0;
- asyncwindispatch = 0;
- }
- int async_fibre_init_dispatcher(async_fibre *fibre)
- {
- LPVOID dispatcher;
- dispatcher = (LPVOID)TlsGetValue(asyncwindispatch);
- if (dispatcher == NULL) {
- fibre->fibre = ConvertThreadToFiber(NULL);
- if (fibre->fibre == NULL) {
- fibre->converted = 0;
- fibre->fibre = GetCurrentFiber();
- if (fibre->fibre == NULL)
- return 0;
- } else {
- fibre->converted = 1;
- }
- if (TlsSetValue(asyncwindispatch, (LPVOID)fibre->fibre) == 0)
- return 0;
- } else {
- fibre->fibre = dispatcher;
- }
- return 1;
- }
- VOID CALLBACK async_start_func_win(PVOID unused)
- {
- async_start_func();
- }
- int async_pipe(OSSL_ASYNC_FD *pipefds)
- {
- if (CreatePipe(&pipefds[0], &pipefds[1], NULL, 256) == 0)
- return 0;
- return 1;
- }
- int async_close_fd(OSSL_ASYNC_FD fd)
- {
- if (CloseHandle(fd) == 0)
- return 0;
- return 1;
- }
- int async_write1(OSSL_ASYNC_FD fd, const void *buf)
- {
- DWORD numwritten = 0;
- if (WriteFile(fd, buf, 1, &numwritten, NULL) && numwritten == 1)
- return 1;
- return 0;
- }
- int async_read1(OSSL_ASYNC_FD fd, void *buf)
- {
- DWORD numread = 0;
- if (ReadFile(fd, buf, 1, &numread, NULL) && numread == 1)
- return 1;
- return 0;
- }
- async_pool *async_get_pool(void)
- {
- return (async_pool *)TlsGetValue(asyncwinpool);
- }
- int async_set_pool(async_pool *pool)
- {
- return TlsSetValue(asyncwinpool, (LPVOID)pool) != 0;
- }
- async_ctx *async_get_ctx(void)
- {
- return (async_ctx *)TlsGetValue(asyncwinctx);
- }
- int async_set_ctx(async_ctx *ctx)
- {
- return TlsSetValue(asyncwinctx, (LPVOID)ctx) != 0;
- }
- #endif
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