[libcxx-commits] [libcxx] [libc++] Adds shared resource helper. (PR #72529)

[Louis Dionne via libcxx-commits]

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@@ -139,6 +139,12 @@
 // #   define _LIBCPP_AVAILABILITY_HAS_NO_TZDB
 #   define _LIBCPP_AVAILABILITY_TZDB
 
+    // This controls the availability of the shared resource code.
+    // This is used in syncstream to synchronize write operations,
+    // but the code is generic and can be used for similar purposes.
+// #   define _LIBCPP_AVAILABILITY_HAS_NO_SHARED_RESOURCE
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ldionne wrote:

This needs to be adjusted on top of `main`.

https://github.com/llvm/llvm-project/pull/72529