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6950075: nmethod sweeper should operate concurrently

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Reviewed-by: never, kvn
This commit is contained in:
Eric Caspole 2010-05-17 16:50:07 -07:00 • committed by Tom Rodriguez
parent 85854f0e13
commit 430574f398
9 changed files with 171 additions and 89 deletions
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6
hotspot/src/share/vm/runtime/sweeper.hpp
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@ -35,6 +35,8 @@ class NMethodSweeper : public AllStatic {
static bool _rescan; // Indicates that we should do a full rescan of the
// of the code cache looking for work to do.
static bool _do_sweep; // Flag to skip the conc sweep if no stack scan happened
static jint _sweep_started; // Flag to control conc sweeper
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
@ -48,7 +50,9 @@ class NMethodSweeper : public AllStatic {
public:
static long traversal_count() { return _traversals; }
static void sweep(); // Invoked at the end of each safepoint
static void scan_stacks(); // Invoked at the end of each safepoint
static void sweep_code_cache(); // Concurrent part of sweep job
static void possibly_sweep(); // Compiler threads call this to sweep
static void notify(nmethod* nm) {
// Perform a full scan of the code cache from the beginning. No