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8058255: Native jbyte Atomic::cmpxchg for supported x86 platforms

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Use the native cmpxchgb instruction on x86.

Reviewed-by: dholmes, kbarrett, phh
This commit is contained in:
Erik Osterlund 2014-10-21 15:07:25 +02:00 • committed by Jesper Wilhelmsson
parent a5d4521aa1
commit a324ff0f31
18 changed files with 165 additions and 5 deletions
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hotspot/src/share/vm/runtime/stubRoutines.cpp
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@ -62,6 +62,7 @@ address StubRoutines::_atomic_store_entry = NULL;
address StubRoutines::_atomic_store_ptr_entry = NULL;
address StubRoutines::_atomic_cmpxchg_entry = NULL;
address StubRoutines::_atomic_cmpxchg_ptr_entry = NULL;
address StubRoutines::_atomic_cmpxchg_byte_entry = NULL;
address StubRoutines::_atomic_cmpxchg_long_entry = NULL;
address StubRoutines::_atomic_add_entry = NULL;
address StubRoutines::_atomic_add_ptr_entry = NULL;