really fix race condition

[openssl.git] / e_os2.h

diff --git a/e_os2.h b/e_os2.h
index be20eac623e1e15a9ae3064816ad3739bfcbf718..ff68d5b94aae707c5a8180a9b6d39a21fb3e46a2 100644 (file)
--- a/e_os2.h
+++ b/e_os2.h
@@ -90,17 +90,22 @@ extern "C" {
 
 /* For 32 bit environment, there seems to be the CygWin environment and then
    all the others that try to do the same thing Microsoft does... */
-#if defined(__CYGWIN32__) || defined(OPENSSL_SYSNAME_CYGWIN32)
+#if defined(OPENSSL_SYSNAME_UWIN)
 # undef OPENSSL_SYS_UNIX
-# define OPENSSL_SYS_WIN32_CYGWIN
+# define OPENSSL_SYS_WIN32_UWIN
 #else
-# if defined(_WIN32) || defined(OPENSSL_SYSNAME_WIN32)
+# if defined(__CYGWIN32__) || defined(OPENSSL_SYSNAME_CYGWIN32)
 #  undef OPENSSL_SYS_UNIX
-#  define OPENSSL_SYS_WIN32
-# endif
-# if defined(OPENSSL_SYSNAME_WINNT)
-#  undef OPENSSL_SYS_UNIX
-#  define OPENSSL_SYS_WINNT
+#  define OPENSSL_SYS_WIN32_CYGWIN
+# else
+#  if defined(_WIN32) || defined(OPENSSL_SYSNAME_WIN32)
+#   undef OPENSSL_SYS_UNIX
+#   define OPENSSL_SYS_WIN32
+#  endif
+#  if defined(OPENSSL_SYSNAME_WINNT)
+#   undef OPENSSL_SYS_UNIX
+#   define OPENSSL_SYS_WINNT
+#  endif
 # endif
 #endif
 
@@ -113,20 +118,41 @@ extern "C" {
 # endif
 #endif
 
+/* DLL settings.  This part is a bit tough, because it's up to the application
+   implementor how he or she will link the application, so it requires some
+   macro to be used. */
+#ifdef OPENSSL_SYS_WINDOWS
+# ifndef OPENSSL_OPT_WINDLL
+#  if defined(_WINDLL) /* This is used when building OpenSSL to indicate that
+                          DLL linkage should be used */
+#   define OPENSSL_OPT_WINDLL
+#  endif
+# endif
+#endif
+
 /* -------------------------------- OpenVMS -------------------------------- */
 #if defined(__VMS) || defined(VMS) || defined(OPENSSL_SYSNAME_VMS)
 # undef OPENSSL_SYS_UNIX
 # define OPENSSL_SYS_VMS
 # if defined(__DECC)
 #  define OPENSSL_SYS_VMS_DECC
+# elif defined(__DECCXX)
+#  define OPENSSL_SYS_VMS_DECC
+#  define OPENSSL_SYS_VMS_DECCXX
 # else
 #  define OPENSSL_SYS_VMS_NODECC
 # endif
 #endif
 
+/* --------------------------------- OS/2 ---------------------------------- */
+#if defined(__EMX__) || defined(__OS2__)
+# undef OPENSSL_SYS_UNIX
+# define OPENSSL_SYS_OS2
+#endif
+
 /* --------------------------------- Unix ---------------------------------- */
 #ifdef OPENSSL_SYS_UNIX
-# if defined(linus) || defined(OPENSSL_SYSNAME_LINUX)
+# if defined(linux) || defined(__linux__) || defined(OPENSSL_SYSNAME_LINUX)
 #  define OPENSSL_SYS_LINUX
 # endif
 # ifdef OPENSSL_SYSNAME_MPE
@@ -189,7 +215,7 @@ extern "C" {
 # define OPENSSL_EXPORT globalref
 # define OPENSSL_IMPORT globalref
 # define OPENSSL_GLOBAL globaldef
-#elif defined(OPENSSL_SYS_WINDOWS)
+#elif defined(OPENSSL_SYS_WINDOWS) && defined(OPENSSL_OPT_WINDLL)
 # define OPENSSL_EXPORT extern _declspec(dllexport)
 # define OPENSSL_IMPORT extern _declspec(dllimport)
 # define OPENSSL_GLOBAL
@@ -200,6 +226,28 @@ extern "C" {
 #endif
 #define OPENSSL_EXTERN OPENSSL_IMPORT
 
+/* Macros to allow global variables to be reached through function calls when
+   required (if a shared library version requvres it, for example.
+   The way it's done allows definitions like this:
+
+       // in foobar.c
+       OPENSSL_IMPLEMENT_GLOBAL(int,foobar) = 0;
+       // in foobar.h
+       OPENSSL_DECLARE_GLOBAL(int,foobar);
+       #define foobar OPENSSL_GLOBAL_REF(foobar)
+*/
+#ifdef OPENSSL_EXPORT_VAR_AS_FUNCTION
+# define OPENSSL_IMPLEMENT_GLOBAL(type,name) static type _hide_##name; \
+        type *_shadow_##name(void) { return &_hide_##name; } \
+        static type _hide_##name
+# define OPENSSL_DECLARE_GLOBAL(type,name) type *_shadow_##name(void)
+# define OPENSSL_GLOBAL_REF(name) (*(_shadow_##name()))
+#else
+# define OPENSSL_IMPLEMENT_GLOBAL(type,name) OPENSSL_GLOBAL type _shadow_##name
+# define OPENSSL_DECLARE_GLOBAL(type,name) OPENSSL_EXPORT type _shadow_##name
+# define OPENSSL_GLOBAL_REF(name) _shadow_##name
+#endif
+
 #ifdef  __cplusplus
 }
 #endif