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8028107: Kitchensink crashed with EAV

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Check the state of caller and callee nmethods and skip call site patching if any of them is not alive

Reviewed-by: jrose, twisti
This commit is contained in:
Vladimir Kozlov 2013-12-06 12:11:51 -08:00
parent 0454a45a80
commit f3fc753f26
4 changed files with 40 additions and 21 deletions
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15
hotspot/src/share/vm/code/nmethod.hpp
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@ -184,11 +184,12 @@ class nmethod : public CodeBlob {
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 @@ class nmethod : public CodeBlob {
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; }