Mercurial > hg > graal-jvmci-8
diff src/share/vm/runtime/sweeper.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 | a61af66fc99e |
children | bfe29ec02863 |
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--- a/src/share/vm/runtime/sweeper.hpp Fri Jan 29 08:33:24 2010 -0800 +++ b/src/share/vm/runtime/sweeper.hpp Fri Jan 29 09:27:22 2010 -0800 @@ -38,6 +38,11 @@ static int _locked_seen; // Number of locked nmethods encountered during the scan static int _not_entrant_seen_on_stack; // Number of not entrant nmethod were are still on stack + static bool _was_full; // remember if we did emergency unloading + static jint _advise_to_sweep; // flag to indicate code cache getting full + static jlong _last_was_full; // timestamp of last emergency unloading + static uint _highest_marked; // highest compile id dumped at last emergency unloading + static long _was_full_traversal; // trav number at last emergency unloading static void process_nmethod(nmethod *nm); public: @@ -51,4 +56,10 @@ // changes to false at safepoint so we can never overwrite it with false. _rescan = true; } + + static void handle_full_code_cache(bool is_full); // Called by compilers who fail to allocate + static void speculative_disconnect_nmethods(bool was_full); // Called by vm op to deal with alloc failure + + static void set_was_full(bool state) { _was_full = state; } + static bool was_full() { return _was_full; } };