2 This file is a part of libcds - Concurrent Data Structures library
4 (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
6 Source code repo: http://github.com/khizmax/libcds/
7 Download: http://sourceforge.net/projects/libcds/files/
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions are met:
12 * Redistributions of source code must retain the above copyright notice, this
13 list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 this list of conditions and the following disclaimer in the documentation
17 and/or other materials provided with the distribution.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
23 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef CDSLIB_COMPILER_GCC_DEFS_H
32 #define CDSLIB_COMPILER_GCC_DEFS_H
35 #define CDS_COMPILER_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
37 #if CDS_COMPILER_VERSION < 40800
38 # error "Compiler version error. GCC version 4.8.0 and above is supported"
43 # define CDS_COMPILER__NAME ("GNU C++ " __VERSION__)
45 # define CDS_COMPILER__NAME "GNU C++"
47 #define CDS_COMPILER__NICK "gcc"
49 #include <cds/compiler/gcc/compiler_macro.h>
51 #define alignof __alignof__
53 // ***************************************
56 // C++11 inline namespace
57 #define CDS_CXX11_INLINE_NAMESPACE_SUPPORT
60 #define CDS_CONSTEXPR constexpr
63 #define CDS_NOEXCEPT_SUPPORT noexcept
64 #define CDS_NOEXCEPT_SUPPORT_(expr) noexcept(expr)
66 // C++11 thread_local keyword
67 #define CDS_CXX11_THREAD_LOCAL_SUPPORT
69 // Full SFINAE support
70 #define CDS_CXX11_SFINAE
72 // Inheriting constructors
73 #define CDS_CXX11_INHERITING_CTOR
75 // *************************************************
77 // If you run under Thread Sanitizer, pass -DCDS_THREAD_SANITIZER_ENABLED in compiler command line
78 // UPD: Seems, GCC 5+ has predefined macro __SANITIZE_THREAD__, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64354
79 #if defined(__SANITIZE_THREAD__) && !defined(CDS_THREAD_SANITIZER_ENABLED)
80 # define CDS_THREAD_SANITIZER_ENABLED
83 // *************************************************
86 #define CDS_TYPE_ALIGNMENT(n) __attribute__ ((aligned (n)))
87 #define CDS_CLASS_ALIGNMENT(n) __attribute__ ((aligned (n)))
88 #define CDS_DATA_ALIGNMENT(n) __attribute__ ((aligned (n)))
91 #if CDS_COMPILER_VERSION >= 40900
92 # if __cplusplus < 201103
93 # define CDS_DEPRECATED( reason ) __attribute__((deprecated( reason )))
94 # elif __cplusplus == 201103 // C++11
95 # define CDS_DEPRECATED( reason ) [[gnu::deprecated(reason)]]
97 # define CDS_DEPRECATED( reason ) [[deprecated(reason)]]
100 # define CDS_DEPRECATED( reason ) __attribute__((deprecated( reason )))
103 #define CDS_NORETURN __attribute__((__noreturn__))
107 #define cds_likely( expr ) __builtin_expect( !!( expr ), 1 )
108 #define cds_unlikely( expr ) __builtin_expect( !!( expr ), 0 )
112 #if defined( __EXCEPTIONS ) && __EXCEPTIONS == 1
113 # define CDS_EXCEPTION_ENABLED
116 // double-width CAS support
117 // note: gcc-4.8 does not support double-word atomics
118 // gcc-4.9: a lot of crashes when use DCAS
119 // gcc-7: 128-bit atomic is not lock-free, see https://gcc.gnu.org/ml/gcc/2017-01/msg00167.html
120 // You can manually suppress wide-atomic support by defining in compiler command line:
121 // for 64bit platform: -DCDS_DISABLE_128BIT_ATOMIC
122 // for 32bit platform: -DCDS_DISABLE_64BIT_ATOMIC
123 #if CDS_COMPILER_VERSION >= 50000
124 # if CDS_BUILD_BITS == 64
125 # if !defined( CDS_DISABLE_128BIT_ATOMIC ) && defined( __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 ) && CDS_COMPILER_VERSION < 70000
126 # define CDS_DCAS_SUPPORT
129 # if !defined( CDS_DISABLE_64BIT_ATOMIC ) && defined( __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 )
130 # define CDS_DCAS_SUPPORT
136 #include <cds/compiler/gcc/compiler_barriers.h>
138 #endif // #ifndef CDSLIB_COMPILER_GCC_DEFS_H