arch/async_posix.h: improve portability.

[openssl.git] / crypto / async / arch / async_posix.h

diff --git a/crypto/async/arch/async_posix.h b/crypto/async/arch/async_posix.h
index 9fdccf9e760998b842858f73e3c0c8d83226ca8a..62449fe60e04ff54c0a2500d7292c98953da5735 100644 (file)
--- a/crypto/async/arch/async_posix.h
+++ b/crypto/async/arch/async_posix.h
@@ -1,80 +1,32 @@
-/* crypto/async/arch/async_posix.h */
 /*
- * 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/)"
+ * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * 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.
- * ====================================================================
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
+
+#ifndef OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H
+#define OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H
 #include <openssl/e_os2.h>
 
-#ifdef OPENSSL_SYS_UNIX
+#if defined(OPENSSL_SYS_UNIX) \
+    && defined(OPENSSL_THREADS) && !defined(OPENSSL_NO_ASYNC) \
+    && !defined(__ANDROID__) && !defined(__OpenBSD__)
 
 # include <unistd.h>
 
-# if _POSIX_VERSION >= 200112L
+# if _POSIX_VERSION >= 200112L \
+     && (_POSIX_VERSION < 200809L || defined(__GLIBC__))
+
+# include <pthread.h>
 
 #  define ASYNC_POSIX
 #  define ASYNC_ARCH
 
-/*
- * Some platforms complain (e.g. OS-X) that setcontext/getcontext/makecontext
- * are deprecated without the following defined. We know its deprecated but
- * there is no alternative.
- */
-#  define _XOPEN_SOURCE
-#  pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-
 #  include <ucontext.h>
 #  include <setjmp.h>
-#  include "e_os.h"
-
-extern __thread async_ctx *posixctx;
-extern __thread async_pool *posixpool;
 
 typedef struct async_fibre_st {
     ucontext_t fibre;
@@ -82,12 +34,7 @@ typedef struct async_fibre_st {
     int env_init;
 } async_fibre;
 
-#  define async_set_ctx(nctx)             (posixctx = (nctx))
-#  define async_get_ctx()                 (posixctx)
-#  define async_set_pool(p)               (posixpool = (p))
-#  define async_get_pool()                (posixpool)
-
-static inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r)
+static ossl_inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r)
 {
     o->env_init = 1;
 
@@ -101,14 +48,11 @@ static inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r)
     return 1;
 }
 
-#  define async_fibre_makecontext(c) \
-            (!getcontext(&(c)->fibre) \
-            && async_fibre_init(c) \
-            && (makecontext(&(c)->fibre, async_start_func, 0), 1))
 #  define async_fibre_init_dispatcher(d)
 
-int async_fibre_init(async_fibre *fibre);
+int async_fibre_makecontext(async_fibre *fibre);
 void async_fibre_free(async_fibre *fibre);
 
 # endif
 #endif
+#endif /* OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H */