crypto/async/arch/async_win.c

   1 /* crypto/async/arch/async_win.c */
   2 /*
   3  * Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2015 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  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
  18  *    distribution.
  19  *
  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/)"
  24  *
  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.
  29  *
  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.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  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  * ====================================================================
  52  */
  53
  54 #include "async_win.h"
  55
  56 #ifdef ASYNC_WIN
  57
  58 # include <windows.h>
  59 # include "internal/cryptlib.h"
  60
  61 struct winpool {
  62     STACK_OF(ASYNC_JOB) *pool;
  63     size_t curr_size;
  64     size_t max_size;
  65 };
  66
  67 void async_start_func(void);
  68
  69 int async_fibre_init_dispatcher(async_fibre *fibre)
  70 {
  71     LPVOID dispatcher;
  72
  73     dispatcher =
  74         (LPVOID) CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_DISPATCH);
  75     if (dispatcher == NULL) {
  76         fibre->fibre = ConvertThreadToFiber(NULL);
  77         CRYPTO_set_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_DISPATCH,
  78                                 (void *)fibre->fibre);
  79     } else {
  80         fibre->fibre = dispatcher;
  81     }
  82     return 1;
  83 }
  84
  85 VOID CALLBACK async_start_func_win(PVOID unused)
  86 {
  87     async_start_func();
  88 }
  89
  90 int async_pipe(OSSL_ASYNC_FD *pipefds)
  91 {
  92     if (CreatePipe(&pipefds[0], &pipefds[1], NULL, 256) == 0)
  93         return 0;
  94
  95     return 1;
  96 }
  97
  98 int async_write1(OSSL_ASYNC_FD fd, const void *buf)
  99 {
 100     DWORD numwritten = 0;
 101
 102     if (WriteFile(fd, buf, 1, &numwritten, NULL) && numwritten == 1)
 103         return 1;
 104
 105     return 0;
 106 }
 107
 108 int async_read1(OSSL_ASYNC_FD fd, void *buf)
 109 {
 110     DWORD numread = 0;
 111
 112     if (ReadFile(fd, buf, 1, &numread, NULL) && numread == 1)
 113         return 1;
 114
 115     return 0;
 116 }
 117
 118 STACK_OF(ASYNC_JOB) *async_get_pool(void)
 119 {
 120     struct winpool *pool;
 121     pool = (struct winpool *)
 122             CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL);
 123     return pool->pool;
 124 }
 125
 126
 127 int async_set_pool(STACK_OF(ASYNC_JOB) *poolin, size_t curr_size,
 128                     size_t max_size)
 129 {
 130     struct winpool *pool;
 131     pool = OPENSSL_malloc(sizeof *pool);
 132     if (pool == NULL)
 133         return 0;
 134
 135     pool->pool = poolin;
 136     pool->curr_size = curr_size;
 137     pool->max_size = max_size;
 138     CRYPTO_set_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL, (void *)pool);
 139     return 1;
 140 }
 141
 142 void async_increment_pool_size(void)
 143 {
 144     struct winpool *pool;
 145     pool = (struct winpool *)
 146             CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL);
 147     pool->curr_size++;
 148 }
 149
 150 void async_release_job_to_pool(ASYNC_JOB *job)
 151 {
 152     struct winpool *pool;
 153     pool = (struct winpool *)
 154             CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL);
 155     sk_ASYNC_JOB_push(pool->pool, job);
 156 }
 157
 158 size_t async_pool_max_size(void)
 159 {
 160     struct winpool *pool;
 161     pool = (struct winpool *)
 162             CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL);
 163     return pool->max_size;
 164 }
 165
 166 void async_release_pool(void)
 167 {
 168     struct winpool *pool;
 169     pool = (struct winpool *)
 170             CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL);
 171     sk_ASYNC_JOB_free(pool->pool);
 172     OPENSSL_free(pool);
 173     CRYPTO_set_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL, NULL);
 174 }
 175
 176 int async_pool_can_grow(void)
 177 {
 178     struct winpool *pool;
 179     pool = (struct winpool *)
 180             CRYPTO_get_thread_local(CRYPTO_THREAD_LOCAL_ASYNC_POOL);
 181     return (pool->max_size == 0) || (pool->curr_size < pool->max_size);
 182 }
 183
 184 #endif