Mercurial > hg > truffle
diff src/share/vm/code/nmethod.hpp @ 14212:22ae97935e05
8028107: Kitchensink crashed with EAV
Summary: check the state of caller and callee nmethods and skip call site patching if any of them is not alive
Reviewed-by: jrose, twisti
| author | kvn |
|---|---|
| date | Fri, 06 Dec 2013 12:11:51 -0800 |
| parents | 510fbd28919c |
| children | 02f27ecb4f3a 3aaa4b9966f6 606acabe7b5c |
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--- a/src/share/vm/code/nmethod.hpp Mon Dec 09 10:03:39 2013 +0100 +++ b/src/share/vm/code/nmethod.hpp Fri Dec 06 12:11:51 2013 -0800 @@ -184,11 +184,12 @@ bool _oops_are_stale; // indicates that it's no longer safe to access oops section #endif - enum { alive = 0, - not_entrant = 1, // uncommon trap has happened but activations may still exist - zombie = 2, - unloaded = 3 }; - + enum { in_use = 0, // executable nmethod + not_entrant = 1, // marked for deoptimization but activations may still exist, + // will be transformed to zombie when all activations are gone + zombie = 2, // no activations exist, nmethod is ready for purge + unloaded = 3 }; // there should be no activations, should not be called, + // will be transformed to zombie immediately jbyte _scavenge_root_state; @@ -407,8 +408,8 @@ address verified_entry_point() const { return _verified_entry_point; } // if klass is correct // flag accessing and manipulation - bool is_in_use() const { return _state == alive; } - bool is_alive() const { return _state == alive || _state == not_entrant; } + bool is_in_use() const { return _state == in_use; } + bool is_alive() const { return _state == in_use || _state == not_entrant; } bool is_not_entrant() const { return _state == not_entrant; } bool is_zombie() const { return _state == zombie; } bool is_unloaded() const { return _state == unloaded; }