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8048268: G1 Code Root Migration performs poorly

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Replace G1CodeRootSet with a Hashtable based implementation, merge Code Root Migration phase into Code Root Scanning

Reviewed-by: jmasa, brutisso, tschatzl
This commit is contained in:
Mikael Gerdin 2014-08-29 13:12:21 +02:00
parent 6fc8764c65
commit 10379e7e82
17 changed files with 437 additions and 677 deletions
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16
hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp
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@ -540,21 +540,17 @@ void HeapRegion::add_strong_code_root(nmethod* nm) {
hrrs->add_strong_code_root(nm);
}
void HeapRegion::add_strong_code_root_locked(nmethod* nm) {
assert_locked_or_safepoint(CodeCache_lock);
HeapRegionRemSet* hrrs = rem_set();
hrrs->add_strong_code_root_locked(nm);
}
void HeapRegion::remove_strong_code_root(nmethod* nm) {
HeapRegionRemSet* hrrs = rem_set();
hrrs->remove_strong_code_root(nm);
}
void HeapRegion::migrate_strong_code_roots() {
assert(in_collection_set(), "only collection set regions");
assert(!isHumongous(),
err_msg("humongous region "HR_FORMAT" should not have been added to collection set",
HR_FORMAT_PARAMS(this)));
HeapRegionRemSet* hrrs = rem_set();
hrrs->migrate_strong_code_roots();
}
void HeapRegion::strong_code_roots_do(CodeBlobClosure* blk) const {
HeapRegionRemSet* hrrs = rem_set();
hrrs->strong_code_roots_do(blk);