Changeset 4bea22a in mainline

Timestamp:

2018-07-05T21:41:20Z (6 years ago)

Author:

Dzejrou <dzejrou@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

69e5838

Parents:

40340461

git-author:

Dzejrou <dzejrou@…> (2018-03-28 14:26:30)

git-committer:

Dzejrou <dzejrou@…> (2018-07-05 21:41:20)

Message:

cpp: added constructor/destructor guards for local static variables

File:

• uspace/lib/cpp/src/internal/runtime.cpp (modified) (2 diffs)

uspace/lib/cpp/src/internal/runtime.cpp

@@ -31 +31 @@
 #include <internal/abi.hpp>
 #include <exception>
+#include <mutex>
 
 namespace __cxxabiv1
@@ -119 +120 @@
     }
 
+    using guard_t = std::uint64_t;
+    std::mutex static_guard_mtx{};
+
+    extern "C" int __cxa_guard_acquire(guard_t* guard)
+    {
+        static_guard_mtx.lock();
+
+        return !*((std::uint8_t*)guard);
+    }
+
+    extern "C" void __cxa_guard_release(guard_t* guard)
+    {
+        *((std::uint8_t*)guard) = 1;
+
+        static_guard_mtx.unlock();
+    }
+
+    extern "C" void __cxa_guard_abort(guard_t* guard)
+    {
+        static_guard_mtx.unlock();
+    }
+
     __fundamental_type_info::~__fundamental_type_info()
     { /* DUMMY BODY */ }