Move threadlocal_detail::Atfork to its own file

[folly.git] / folly / detail / ThreadLocalDetail.cpp

diff --git a/folly/detail/ThreadLocalDetail.cpp b/folly/detail/ThreadLocalDetail.cpp
index 4d652451debc616e049f04a360e8a291a2b70d53..667aaa98fe9d87342b1f94d219824ad10dd720ce 100644 (file)
--- a/folly/detail/ThreadLocalDetail.cpp
+++ b/folly/detail/ThreadLocalDetail.cpp
@@ -247,78 +247,6 @@ void StaticMetaBase::reserve(EntryID* id) {
   free(reallocated);
 }
 
-namespace {
-
-struct AtForkTask {
-  folly::Function<void()> prepare;
-  folly::Function<void()> parent;
-  folly::Function<void()> child;
-};
-
-class AtForkList {
- public:
-  static AtForkList& instance() {
-    static auto instance = new AtForkList();
-    return *instance;
-  }
-
-  static void prepare() noexcept {
-    instance().tasksLock.lock();
-    auto& tasks = instance().tasks;
-    for (auto task = tasks.rbegin(); task != tasks.rend(); ++task) {
-      task->prepare();
-    }
-  }
-
-  static void parent() noexcept {
-    auto& tasks = instance().tasks;
-    for (auto& task : tasks) {
-      task.parent();
-    }
-    instance().tasksLock.unlock();
-  }
-
-  static void child() noexcept {
-    auto& tasks = instance().tasks;
-    for (auto& task : tasks) {
-      task.child();
-    }
-    instance().tasksLock.unlock();
-  }
-
-  std::mutex tasksLock;
-  std::list<AtForkTask> tasks;
-
- private:
-  AtForkList() {
-#if FOLLY_HAVE_PTHREAD_ATFORK
-    int ret = pthread_atfork(
-        &AtForkList::prepare, &AtForkList::parent, &AtForkList::child);
-    checkPosixError(ret, "pthread_atfork failed");
-#elif !__ANDROID__ && !defined(_MSC_VER)
-// pthread_atfork is not part of the Android NDK at least as of n9d. If
-// something is trying to call native fork() directly at all with Android's
-// process management model, this is probably the least of the problems.
-//
-// But otherwise, this is a problem.
-#warning pthread_atfork unavailable
-#endif
-  }
-};
-} // namespace
-
-void StaticMetaBase::initAtFork() {
-  AtForkList::instance();
-}
-
-void StaticMetaBase::registerAtFork(
-    folly::Function<void()> prepare,
-    folly::Function<void()> parent,
-    folly::Function<void()> child) {
-  std::lock_guard<std::mutex> lg(AtForkList::instance().tasksLock);
-  AtForkList::instance().tasks.push_back(
-      {std::move(prepare), std::move(parent), std::move(child)});
-}
 
 FOLLY_STATIC_CTOR_PRIORITY_MAX
 PthreadKeyUnregister PthreadKeyUnregister::instance_;