needed on M1 mac
Laurent Gatto authored on 18/06/2021 15:35:44
• GitHub committed on 18/06/2021 15:35:44
| 1 | 1 |
new file mode 100644 |
| ... | ... |
@@ -0,0 +1,72 @@ |
| 1 |
+#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED |
|
| 2 |
+#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED |
|
| 3 |
+ |
|
| 4 |
+// |
|
| 5 |
+// boost/detail/atomic_count_sync.hpp |
|
| 6 |
+// |
|
| 7 |
+// atomic_count for g++ 4.1+ |
|
| 8 |
+// |
|
| 9 |
+// http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html |
|
| 10 |
+// |
|
| 11 |
+// Copyright 2007 Peter Dimov |
|
| 12 |
+// |
|
| 13 |
+// Distributed under the Boost Software License, Version 1.0. (See |
|
| 14 |
+// accompanying file LICENSE_1_0.txt or copy at |
|
| 15 |
+// http://www.boost.org/LICENSE_1_0.txt) |
|
| 16 |
+// |
|
| 17 |
+ |
|
| 18 |
+#include <boost/cstdint.hpp> |
|
| 19 |
+ |
|
| 20 |
+#if defined( __ia64__ ) && defined( __INTEL_COMPILER ) |
|
| 21 |
+# include <ia64intrin.h> |
|
| 22 |
+#endif |
|
| 23 |
+ |
|
| 24 |
+#if defined(BOOST_SP_REPORT_IMPLEMENTATION) |
|
| 25 |
+ |
|
| 26 |
+#include <boost/config/pragma_message.hpp> |
|
| 27 |
+BOOST_PRAGMA_MESSAGE("Using __sync atomic_count")
|
|
| 28 |
+ |
|
| 29 |
+#endif |
|
| 30 |
+ |
|
| 31 |
+namespace boost |
|
| 32 |
+{
|
|
| 33 |
+ |
|
| 34 |
+namespace detail |
|
| 35 |
+{
|
|
| 36 |
+ |
|
| 37 |
+class atomic_count |
|
| 38 |
+{
|
|
| 39 |
+public: |
|
| 40 |
+ |
|
| 41 |
+ explicit atomic_count( long v ): value_( static_cast< boost::int_least32_t >( v ) ) |
|
| 42 |
+ {
|
|
| 43 |
+ } |
|
| 44 |
+ |
|
| 45 |
+ long operator++() |
|
| 46 |
+ {
|
|
| 47 |
+ return __sync_add_and_fetch( &value_, 1 ); |
|
| 48 |
+ } |
|
| 49 |
+ |
|
| 50 |
+ long operator--() |
|
| 51 |
+ {
|
|
| 52 |
+ return __sync_add_and_fetch( &value_, -1 ); |
|
| 53 |
+ } |
|
| 54 |
+ |
|
| 55 |
+ operator long() const |
|
| 56 |
+ {
|
|
| 57 |
+ return __sync_fetch_and_add( &value_, 0 ); |
|
| 58 |
+ } |
|
| 59 |
+ |
|
| 60 |
+private: |
|
| 61 |
+ |
|
| 62 |
+ atomic_count(atomic_count const &); |
|
| 63 |
+ atomic_count & operator=(atomic_count const &); |
|
| 64 |
+ |
|
| 65 |
+ mutable boost::int_least32_t value_; |
|
| 66 |
+}; |
|
| 67 |
+ |
|
| 68 |
+} // namespace detail |
|
| 69 |
+ |
|
| 70 |
+} // namespace boost |
|
| 71 |
+ |
|
| 72 |
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED |