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 #include "../async_locl.h"
59 # include "internal/cryptlib.h"
62 STACK_OF(ASYNC_JOB) *pool;
67 static DWORD asyncwinpool = 0;
68 static DWORD asyncwinctx = 0;
69 static DWORD asyncwindispatch = 0;
72 void async_start_func(void);
74 int async_global_init(void)
76 asyncwinpool = TlsAlloc();
77 asyncwinctx = TlsAlloc();
78 asyncwindispatch = TlsAlloc();
79 if (asyncwinpool == TLS_OUT_OF_INDEXES || asyncwinctx == TLS_OUT_OF_INDEXES
80 || asyncwindispatch == TLS_OUT_OF_INDEXES) {
81 if (asyncwinpool != TLS_OUT_OF_INDEXES) {
82 TlsFree(asyncwinpool);
84 if (asyncwinctx != TLS_OUT_OF_INDEXES) {
87 if (asyncwindispatch != TLS_OUT_OF_INDEXES) {
88 TlsFree(asyncwindispatch);
95 int async_local_init(void)
97 return (TlsSetValue(asyncwinpool, NULL) != 0)
98 && (TlsSetValue(asyncwinctx, NULL) != 0)
99 && (TlsSetValue(asyncwindispatch, NULL) != 0);
102 void async_local_cleanup(void)
104 async_ctx *ctx = async_get_ctx();
106 async_fibre *fibre = &ctx->dispatcher;
107 if(fibre != NULL && fibre->fibre != NULL && fibre->converted) {
108 ConvertFiberToThread();
114 void async_global_cleanup(void)
116 TlsFree(asyncwinpool);
117 TlsFree(asyncwinctx);
118 TlsFree(asyncwindispatch);
121 asyncwindispatch = 0;
124 int async_fibre_init_dispatcher(async_fibre *fibre)
128 dispatcher = (LPVOID)TlsGetValue(asyncwindispatch);
129 if (dispatcher == NULL) {
130 fibre->fibre = ConvertThreadToFiber(NULL);
131 if (fibre->fibre == NULL) {
132 fibre->converted = 0;
133 fibre->fibre = GetCurrentFiber();
134 if (fibre->fibre == NULL)
137 fibre->converted = 1;
139 if (TlsSetValue(asyncwindispatch, (LPVOID)fibre->fibre) == 0)
142 fibre->fibre = dispatcher;
147 VOID CALLBACK async_start_func_win(PVOID unused)
152 int async_pipe(OSSL_ASYNC_FD *pipefds)
154 if (CreatePipe(&pipefds[0], &pipefds[1], NULL, 256) == 0)
160 int async_close_fd(OSSL_ASYNC_FD fd)
162 if (CloseHandle(fd) == 0)
168 int async_write1(OSSL_ASYNC_FD fd, const void *buf)
170 DWORD numwritten = 0;
172 if (WriteFile(fd, buf, 1, &numwritten, NULL) && numwritten == 1)
178 int async_read1(OSSL_ASYNC_FD fd, void *buf)
182 if (ReadFile(fd, buf, 1, &numread, NULL) && numread == 1)
188 async_pool *async_get_pool(void)
190 return (async_pool *)TlsGetValue(asyncwinpool);
194 int async_set_pool(async_pool *pool)
196 return TlsSetValue(asyncwinpool, (LPVOID)pool) != 0;
199 async_ctx *async_get_ctx(void)
201 return (async_ctx *)TlsGetValue(asyncwinctx);
204 int async_set_ctx(async_ctx *ctx)
206 return TlsSetValue(asyncwinctx, (LPVOID)ctx) != 0;