8025059: Metspace::should_expand mixes bytes and words in check against MaxMetaspaceSize Reviewed-by: coleenp, brutisso, mgerdin, jmasa

8024974: Incorrect use of GC_locker::is_active() Summary: SymbolTable and StringTable can make calls to GC_locker::is_active() outside a safepoint. This isn't safe because the GC_locker active state (lock count) is only updated at a safepoint and only remains valid as long as _needs_gc is true. However, outside a safepoint_needs_gc can change to false at any time, which makes it impossible to do a correct call to is_active() in that context. In this case these calls can just be removed since the input argument to basic_add() should never be on the heap and so there's no need to check the GC_locker state. This change also adjusts the assert() in is_active() to makes sure all calls to this function are always done under a safepoint. Reviewed-by: brutisso, dcubed Contributed-by: per.liden@oracle.com

Merge

Merge

Merge

8014911: Should use SUPPORTS_NATIVE_CX8 define to help C/C++ compiler elide blocks of code Summary: If SUPPORTS_NATIVE_CX8 true then supports_cx8() function hard coded to return 'true' Reviewed-by: kvn, twisti, dholmes