diff options
| -rw-r--r-- | build2/target.hxx | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/build2/target.hxx b/build2/target.hxx index 10b0eb3..e15b970 100644 --- a/build2/target.hxx +++ b/build2/target.hxx @@ -1367,14 +1367,20 @@ namespace build2 static const target_type static_type; protected: + + // Complain if timestamp is not lock-free unless we were told non-lock- + // free is ok. + // +#ifndef BUILD2_ATOMIC_NON_LOCK_FREE // C++17: // // static_assert (atomic<timestamp::rep>::is_always_lock_free, // "timestamp is not lock-free on this architecture"); - + // #if !defined(ATOMIC_LLONG_LOCK_FREE) || ATOMIC_LLONG_LOCK_FREE != 2 # error timestamp is not lock-free on this architecture #endif +#endif // Note that the value is not used to synchronize any other state so we // use the release-consume ordering (i.e., we are only interested in the |