Mercurial > hg > graal-compiler
diff src/share/vm/code/nmethod.hpp @ 1202:5f24d0319e54
4360113: Evict nmethods when code cache gets full
Summary: Speculatively unload the oldest nmethods when code cache gets full.
Reviewed-by: never, kvn
Contributed-by: eric.caspole@amd.com
| author | kvn |
|---|---|
| date | Fri, 29 Jan 2010 09:27:22 -0800 |
| parents | 24128c2ffa87 |
| children | 18a389214829 |
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--- a/src/share/vm/code/nmethod.hpp Fri Jan 29 08:33:24 2010 -0800 +++ b/src/share/vm/code/nmethod.hpp Fri Jan 29 09:27:22 2010 -0800 @@ -95,6 +95,8 @@ unsigned int has_unsafe_access:1; // May fault due to unsafe access. unsigned int has_method_handle_invokes:1; // Has this method MethodHandle invokes? + unsigned int speculatively_disconnected:1; // Marked for potential unload + void clear(); }; @@ -137,6 +139,7 @@ // To support simple linked-list chaining of nmethods: nmethod* _osr_link; // from instanceKlass::osr_nmethods_head nmethod* _scavenge_root_link; // from CodeCache::scavenge_root_nmethods + nmethod* _saved_nmethod_link; // from CodeCache::speculatively_disconnect static nmethod* volatile _oops_do_mark_nmethods; nmethod* volatile _oops_do_mark_link; @@ -413,6 +416,9 @@ bool has_method_handle_invokes() const { return flags.has_method_handle_invokes; } void set_has_method_handle_invokes(bool z) { flags.has_method_handle_invokes = z; } + bool is_speculatively_disconnected() const { return flags.speculatively_disconnected; } + void set_speculatively_disconnected(bool z) { flags.speculatively_disconnected = z; } + int level() const { return flags.level; } void set_level(int newLevel) { check_safepoint(); flags.level = newLevel; } @@ -437,6 +443,9 @@ nmethod* scavenge_root_link() const { return _scavenge_root_link; } void set_scavenge_root_link(nmethod *n) { _scavenge_root_link = n; } + nmethod* saved_nmethod_link() const { return _saved_nmethod_link; } + void set_saved_nmethod_link(nmethod *n) { _saved_nmethod_link = n; } + public: // Sweeper support