archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-26 22:34:27 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8020151: PSR:PERF Large performance regressions when code cache is filled

Browse source 
Code cache sweeping based on method hotness; removed speculatively disconnect

Reviewed-by: kvn, iveresov
This commit is contained in:
Albert Noll 2013-09-27 10:50:55 +02:00
parent 441f1d74cf
commit 0dee555ead
15 changed files with 240 additions and 418 deletions
Download patch file Download diff file Expand all files Collapse all files

6
hotspot/src/share/vm/code/codeCache.hpp
View file

@ -57,7 +57,6 @@ class CodeCache : AllStatic {
static int _number_of_nmethods_with_dependencies;
static bool _needs_cache_clean;
static nmethod* _scavenge_root_nmethods; // linked via nm->scavenge_root_link()
static nmethod* _saved_nmethods; // Linked list of speculatively disconnected nmethods.
static void verify_if_often() PRODUCT_RETURN;
@ -167,17 +166,12 @@ class CodeCache : AllStatic {
static size_t capacity() { return _heap->capacity(); }
static size_t max_capacity() { return _heap->max_capacity(); }
static size_t unallocated_capacity() { return _heap->unallocated_capacity(); }
static bool needs_flushing() { return unallocated_capacity() < CodeCacheFlushingMinimumFreeSpace; }
static double reverse_free_ratio();
static bool needs_cache_clean() { return _needs_cache_clean; }
static void set_needs_cache_clean(bool v) { _needs_cache_clean = v; }
static void clear_inline_caches(); // clear all inline caches
static nmethod* reanimate_saved_code(Method* m);
static void remove_saved_code(nmethod* nm);
static void speculatively_disconnect(nmethod* nm);
// Deoptimization
static int mark_for_deoptimization(DepChange& changes);
#ifdef HOTSWAP