ywkaras commented on a change in pull request #7362:
URL: https://github.com/apache/trafficserver/pull/7362#discussion_r534617439
##########
File path: src/tscore/ink_queue.cc
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@@ -66,6 +67,139 @@
#define DEADBEEF
#endif
+namespace
+{
+// Atomic stack, implemented as a linked list. The link is stored at the
offset (given by the base class
+// member function link_offset() ) within each stack element. The stack is
empty when the head pointer is null.
+//
+template <class Base> class AtomicStack_ : private Base
+{
+public:
+ template <typename... Args>
+ AtomicStack_(std::atomic<void *> &head, Args &&... args) :
Base(std::forward<Args>(args)...), _head(head)
+ {
+ }
+
+ // Return reference to "next" pointer within a stack element.
+ //
+ void *&
+ link(void *elem)
+ {
+ return *reinterpret_cast<void **>(static_cast<char *>(elem) +
Base::link_offset());
+ }
+
+ // Splice this stack to the tail of another stack (whose head and tail is
given by the parameters).
Review comment:
are given
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