1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
From: Debian MySQL Maintainers <pkg-mysql-maint@lists.alioth.debian.org>
Date: Thu, 10 Aug 2017 20:40:29 +0200
Subject: c11_atomics
---
configure.cmake | 23 +++++++++++++++++++++--
include/atomic/gcc_builtins.h | 15 +++++++++++++++
include/atomic/nolock.h | 4 ++--
mysys/CMakeLists.txt | 4 ++++
sql/CMakeLists.txt | 4 ++++
5 files changed, 46 insertions(+), 4 deletions(-)
diff --git a/configure.cmake b/configure.cmake
index 0057c7f..43ad114 100644
--- a/configure.cmake
+++ b/configure.cmake
@@ -128,7 +128,7 @@ IF(UNIX)
ENDIF()
FIND_PACKAGE(Threads)
- SET(CMAKE_REQUIRED_LIBRARIES
+ LIST(APPEND CMAKE_REQUIRED_LIBRARIES
${LIBM} ${LIBNSL} ${LIBBIND} ${LIBCRYPT} ${LIBSOCKET} ${LIBDL} ${CMAKE_THREAD_LIBS_INIT} ${LIBRT} ${LIBEXECINFO})
# Need explicit pthread for gcc -fsanitize=address
IF(CMAKE_USE_PTHREADS_INIT AND CMAKE_C_FLAGS MATCHES "-fsanitize=")
@@ -1028,7 +1028,26 @@ ELSEIF(NOT WITH_ATOMIC_OPS)
long long int *ptr= &var;
return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST);
}"
- HAVE_GCC_C11_ATOMICS)
+ HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC)
+ IF(HAVE_GCC_C11_ATOMICS_WITHOUT_LIBATOMIC)
+ SET(HAVE_GCC_C11_ATOMICS True)
+ ELSE()
+ SET(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
+ LIST(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")
+ CHECK_CXX_SOURCE_COMPILES("
+ int main()
+ {
+ long long int var= 1;
+ long long int *ptr= &var;
+ return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST);
+ }"
+ HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
+ IF(HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
+ SET(HAVE_GCC_C11_ATOMICS True)
+ ELSE()
+ SET(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
+ ENDIF()
+ ENDIF()
ELSE()
MESSAGE(FATAL_ERROR "${WITH_ATOMIC_OPS} is not a valid value for WITH_ATOMIC_OPS!")
ENDIF()
diff --git a/include/atomic/gcc_builtins.h b/include/atomic/gcc_builtins.h
index 56a0323..044be2e 100644
--- a/include/atomic/gcc_builtins.h
+++ b/include/atomic/gcc_builtins.h
@@ -16,6 +16,7 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
+#if defined (HAVE_GCC_ATOMIC_BUILTINS)
#define make_atomic_add_body(S) \
v= __sync_fetch_and_add(a, v);
#define make_atomic_fas_body(S) \
@@ -26,6 +27,20 @@
sav= __sync_val_compare_and_swap(a, cmp_val, set);\
if (!(ret= (sav == cmp_val))) *cmp= sav
+#elif defined(HAVE_GCC_C11_ATOMICS)
+
+#define make_atomic_add_body(S) \
+ v= __atomic_fetch_add(a, v, __ATOMIC_SEQ_CST)
+#define make_atomic_fas_body(S) \
+ v= __atomic_exchange_n(a, v, __ATOMIC_SEQ_CST)
+#define make_atomic_cas_body(S) \
+ int ## S sav; \
+ ret= __atomic_compare_exchange_n(a, cmp, set, \
+ 0, \
+ __ATOMIC_SEQ_CST,\
+ __ATOMIC_SEQ_CST);
+#endif
+
#ifdef MY_ATOMIC_MODE_DUMMY
#define make_atomic_load_body(S) ret= *a
#define make_atomic_store_body(S) *a= v
diff --git a/include/atomic/nolock.h b/include/atomic/nolock.h
index 2137445..2ad7d98 100644
--- a/include/atomic/nolock.h
+++ b/include/atomic/nolock.h
@@ -17,7 +17,7 @@
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#if defined(__i386__) || defined(_MSC_VER) || defined(__x86_64__) \
- || defined(HAVE_GCC_ATOMIC_BUILTINS) \
+ || defined(HAVE_GCC_ATOMIC_BUILTINS) || defined(HAVE_GCC_C11_ATOMICS) \
|| defined(HAVE_SOLARIS_ATOMIC)
# ifdef MY_ATOMIC_MODE_DUMMY
@@ -41,7 +41,7 @@
# elif __GNUC__
# if defined(HAVE_SOLARIS_ATOMIC)
# include "solaris.h"
-# elif defined(HAVE_GCC_ATOMIC_BUILTINS)
+# elif defined(HAVE_GCC_ATOMIC_BUILTINS) || defined(HAVE_GCC_C11_ATOMICS)
# include "gcc_builtins.h"
# elif defined(__i386__) || defined(__x86_64__)
# include "x86-gcc.h"
diff --git a/mysys/CMakeLists.txt b/mysys/CMakeLists.txt
index eb7f75e..a9221d7 100644
--- a/mysys/CMakeLists.txt
+++ b/mysys/CMakeLists.txt
@@ -78,6 +78,10 @@ IF(HAVE_BFD_H)
TARGET_LINK_LIBRARIES(mysys bfd)
ENDIF(HAVE_BFD_H)
+IF(HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
+ TARGET_LINK_LIBRARIES(mysys atomic)
+ENDIF()
+
IF (WIN32)
TARGET_LINK_LIBRARIES(mysys IPHLPAPI)
ENDIF(WIN32)
diff --git a/sql/CMakeLists.txt b/sql/CMakeLists.txt
index c34b22c..32feaa7 100644
--- a/sql/CMakeLists.txt
+++ b/sql/CMakeLists.txt
@@ -178,6 +178,10 @@ TARGET_LINK_LIBRARIES(sql ${MYSQLD_STATIC_PLUGIN_LIBS}
${SSL_LIBRARIES}
${LIBSYSTEMD})
+IF(HAVE_GCC_C11_ATOMICS_WITH_LIBATOMIC)
+ TARGET_LINK_LIBRARIES(sql atomic)
+ENDIF()
+
IF(WIN32)
SET(MYSQLD_SOURCE main.cc nt_servc.cc message.rc)
TARGET_LINK_LIBRARIES(sql psapi)
|
