gcc-4.8 does not supported std::atomic for 128-bit types

[libcds.git] / cds / compiler / gcc / defs.h

diff --git a/cds/compiler/gcc/defs.h b/cds/compiler/gcc/defs.h
index de34765a6c55a9a067ba9d44d82c26de9333d0cb..99d8589c17d33f9c54e24f43196527ccf5e54efa 100644 (file)
--- a/cds/compiler/gcc/defs.h
+++ b/cds/compiler/gcc/defs.h
@@ -1,7 +1,35 @@
-//$$CDS-header$$
-
-#ifndef __CDS_COMPILER_GCC_DEFS_H
-#define __CDS_COMPILER_GCC_DEFS_H
+/*
+    This file is a part of libcds - Concurrent Data Structures library
+
+    (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2016
+
+    Source code repo: http://github.com/khizmax/libcds/
+    Download: http://sourceforge.net/projects/libcds/files/
+    
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this
+      list of conditions and the following disclaimer.
+
+    * 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.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS 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 COPYRIGHT HOLDER OR 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.     
+*/
+
+#ifndef CDSLIB_COMPILER_GCC_DEFS_H
+#define CDSLIB_COMPILER_GCC_DEFS_H
 
 // Compiler version
 #define CDS_COMPILER_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
@@ -20,7 +48,6 @@
 
 #include <cds/compiler/gcc/compiler_macro.h>
 
-
 #define alignof __alignof__
 
 // ***************************************
@@ -29,16 +56,12 @@
 // C++11 inline namespace
 #define CDS_CXX11_INLINE_NAMESPACE_SUPPORT
 
-// Lambda
-#define CDS_CXX11_LAMBDA_SUPPORT
-
 // constexpr
 #define CDS_CONSTEXPR    constexpr
 
 // noexcept
 #define CDS_NOEXCEPT_SUPPORT        noexcept
 #define CDS_NOEXCEPT_SUPPORT_(expr) noexcept(expr)
-#define CDS_CONSTEXPR_CONST constexpr const
 
 // C++11 thread_local keyword
 #define CDS_CXX11_THREAD_LOCAL_SUPPORT
@@ -46,6 +69,14 @@
 // Full SFINAE support
 #define CDS_CXX11_SFINAE
 
+// Inheriting constructors
+#define CDS_CXX11_INHERITING_CTOR
+
+// *************************************************
+// Features
+// If you run under Thread Sanitizer, pass -DCDS_THREAD_SANITIZER_ENABLED in compiler command line
+//#define CDS_THREAD_SANITIZER_ENABLED
+
 // *************************************************
 // Alignment macro
 
@@ -53,7 +84,36 @@
 #define CDS_CLASS_ALIGNMENT(n)  __attribute__ ((aligned (n)))
 #define CDS_DATA_ALIGNMENT(n)   __attribute__ ((aligned (n)))
 
+// Attributes
+#if CDS_COMPILER_VERSION >= 40900
+#   if __cplusplus < 201103
+#       define CDS_DEPRECATED( reason ) __attribute__((deprecated( reason )))
+#   elif __cplusplus == 201103 // C++11
+#       define CDS_DEPRECATED( reason ) [[gnu::deprecated(reason)]]
+#   else  // C++14
+#       define CDS_DEPRECATED( reason ) [[deprecated(reason)]]
+#   endif
+#else
+#   define CDS_DEPRECATED( reason ) __attribute__((deprecated( reason )))
+#endif
+
+// likely/unlikely
+
+#define cds_likely( expr )   __builtin_expect( !!( expr ), 1 )
+#define cds_unlikely( expr ) __builtin_expect( !!( expr ), 0 )
+
+// double-width CAS support
+#if CDS_BUILD_BITS == 64
+    // gcc-4.8 does not support 16-word (128bit) atomics
+#   if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 ) && CDS_COMPILER_VERSION >= 40900
+#       define CDS_DCAS_SUPPORT
+#   endif
+#else
+#   ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
+#       define CDS_DCAS_SUPPORT
+#   endif
+#endif
 
 #include <cds/compiler/gcc/compiler_barriers.h>
 
-#endif // #ifndef __CDS_COMPILER_GCC_DEFS_H
+#endif // #ifndef CDSLIB_COMPILER_GCC_DEFS_H