1 /* crypto/async/arch/async_win.c */
3 * Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
5 /* ====================================================================
6 * Copyright (c) 2015 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
54 /* This must be the first #include file */
55 #include "../async_locl.h"
60 # include "internal/cryptlib.h"
63 STACK_OF(ASYNC_JOB) *pool;
68 static DWORD asyncwinpool = 0;
69 static DWORD asyncwinctx = 0;
70 static DWORD asyncwindispatch = 0;
73 void async_start_func(void);
75 int async_global_init(void)
77 asyncwinpool = TlsAlloc();
78 asyncwinctx = TlsAlloc();
79 asyncwindispatch = TlsAlloc();
80 if (asyncwinpool == TLS_OUT_OF_INDEXES || asyncwinctx == TLS_OUT_OF_INDEXES
81 || asyncwindispatch == TLS_OUT_OF_INDEXES) {
82 if (asyncwinpool != TLS_OUT_OF_INDEXES) {
83 TlsFree(asyncwinpool);
85 if (asyncwinctx != TLS_OUT_OF_INDEXES) {
88 if (asyncwindispatch != TLS_OUT_OF_INDEXES) {
89 TlsFree(asyncwindispatch);
96 int async_local_init(void)
98 return (TlsSetValue(asyncwinpool, NULL) != 0)
99 && (TlsSetValue(asyncwinctx, NULL) != 0)
100 && (TlsSetValue(asyncwindispatch, NULL) != 0);
103 void async_local_cleanup(void)
105 async_ctx *ctx = async_get_ctx();
107 async_fibre *fibre = &ctx->dispatcher;
108 if(fibre != NULL && fibre->fibre != NULL && fibre->converted) {
109 ConvertFiberToThread();
115 void async_global_cleanup(void)
117 TlsFree(asyncwinpool);
118 TlsFree(asyncwinctx);
119 TlsFree(asyncwindispatch);
122 asyncwindispatch = 0;
125 int async_fibre_init_dispatcher(async_fibre *fibre)
129 dispatcher = (LPVOID)TlsGetValue(asyncwindispatch);
130 if (dispatcher == NULL) {
131 fibre->fibre = ConvertThreadToFiber(NULL);
132 if (fibre->fibre == NULL) {
133 fibre->converted = 0;
134 fibre->fibre = GetCurrentFiber();
135 if (fibre->fibre == NULL)
138 fibre->converted = 1;
140 if (TlsSetValue(asyncwindispatch, (LPVOID)fibre->fibre) == 0)
143 fibre->fibre = dispatcher;
148 VOID CALLBACK async_start_func_win(PVOID unused)
153 int async_pipe(OSSL_ASYNC_FD *pipefds)
155 if (CreatePipe(&pipefds[0], &pipefds[1], NULL, 256) == 0)
161 int async_close_fd(OSSL_ASYNC_FD fd)
163 if (CloseHandle(fd) == 0)
169 int async_write1(OSSL_ASYNC_FD fd, const void *buf)
171 DWORD numwritten = 0;
173 if (WriteFile(fd, buf, 1, &numwritten, NULL) && numwritten == 1)
179 int async_read1(OSSL_ASYNC_FD fd, void *buf)
183 if (ReadFile(fd, buf, 1, &numread, NULL) && numread == 1)
189 async_pool *async_get_pool(void)
191 return (async_pool *)TlsGetValue(asyncwinpool);
195 int async_set_pool(async_pool *pool)
197 return TlsSetValue(asyncwinpool, (LPVOID)pool) != 0;
200 async_ctx *async_get_ctx(void)
202 return (async_ctx *)TlsGetValue(asyncwinctx);
205 int async_set_ctx(async_ctx *ctx)
207 return TlsSetValue(asyncwinctx, (LPVOID)ctx) != 0;