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8213436: Obsolete UseMembar

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Reviewed-by: kvn, dholmes, mdoerr, adinn
This commit is contained in:
Mikael Vidstedt 2018-11-08 11:45:13 -08:00
parent 38a1e5ffbc
commit f69921f2fc
57 changed files with 43 additions and 655 deletions
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12
src/hotspot/cpu/sparc/sharedRuntime_sparc.cpp
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@ -2372,16 +2372,8 @@ nmethod* SharedRuntime::generate_native_wrapper(MacroAssembler* masm,
__ set(_thread_in_native_trans, G3_scratch);
__ st(G3_scratch, G2_thread, JavaThread::thread_state_offset());
if (UseMembar) {
// Force this write out before the read below
__ membar(Assembler::StoreLoad);
} else {
// Write serialization page so VM thread can do a pseudo remote membar.
// We use the current thread pointer to calculate a thread specific
// offset to write to within the page. This minimizes bus traffic
// due to cache line collision.
__ serialize_memory(G2_thread, G1_scratch, G3_scratch);
}
// Force this write out before the read below
__ membar(Assembler::StoreLoad);
Label L;
Address suspend_state(G2_thread, JavaThread::suspend_flags_offset());