Ydb stable 22-4-2122.4.21

x-stable-origin-commit: e89099581237299a132feafb5b58af59ebd0468a

1 files changed, 69 insertions, 0 deletions

diff --git a/contrib/restricted/boost/libs/context/src/execution_context.cpp b/contrib/restricted/boost/libs/context/src/execution_context.cpp
new file mode 100644
index 0000000000..fc593ecb03
--- /dev/null
+++ b/contrib/restricted/boost/libs/context/src/execution_context.cpp
@@ -0,0 +1,69 @@
+
+//          Copyright Oliver Kowalke 2009.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
+#include "boost/context/detail/config.hpp"
+
+#if ! defined(BOOST_CONTEXT_NO_CXX11)
+
+#include "boost/context/execution_context.hpp"
+#include <boost/config.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_PREFIX
+#endif
+
+namespace boost {
+namespace context {
+
+#if !defined(BOOST_NO_CXX11_THREAD_LOCAL)
+
+namespace detail {
+
+ecv1_activation_record::ptr_t &
+ecv1_activation_record::current() noexcept {
+    thread_local static ptr_t current;
+    return current;
+}
+
+// zero-initialization
+thread_local static std::size_t counter;
+
+// schwarz counter
+ecv1_activation_record_initializer::ecv1_activation_record_initializer() noexcept {
+    if ( 0 == counter++) {
+        ecv1_activation_record::current().reset( new ecv1_activation_record() );
+    }
+}
+
+ecv1_activation_record_initializer::~ecv1_activation_record_initializer() {
+    if ( 0 == --counter) {
+        BOOST_ASSERT( ecv1_activation_record::current()->is_main_context() );
+        delete ecv1_activation_record::current().detach();
+    }
+}
+
+}
+
+namespace v1 {
+
+execution_context
+execution_context::current() noexcept {
+    // initialized the first time control passes; per thread
+    thread_local static detail::ecv1_activation_record_initializer initializer;
+    return execution_context();
+}
+
+}
+
+#endif
+
+}}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_SUFFIX
+#endif
+
+#endif