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8220512: Deoptimize redefinition functions that have dirty ICs

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Walk ICs to determine whether nmethods are dependent on redefined classes.

Reviewed-by: sspitsyn, eosterlund
This commit is contained in:
Coleen Phillimore 2019-03-15 16:00:18 -04:00
parent f0b707b94b
commit 5c5089b0a2
23 changed files with 121 additions and 69 deletions
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11
src/hotspot/share/code/codeCache.cpp
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@ -667,7 +667,7 @@ void CodeCache::nmethods_do(void f(nmethod* nm)) {
}
}
void CodeCache::metadata_do(void f(Metadata* m)) {
void CodeCache::metadata_do(MetadataClosure* f) {
assert_locked_or_safepoint(CodeCache_lock);
NMethodIterator iter(NMethodIterator::only_alive_and_not_unloading);
while(iter.next()) {
@ -1061,13 +1061,14 @@ int CodeCache::mark_dependents_for_evol_deoptimization() {
// ...Already marked in the previous pass; count it here.
// Also counts AOT compiled methods, already marked.
number_of_marked_CodeBlobs++;
} else if (nm->is_evol_dependent()) {
} else if (nm->has_evol_metadata()) {
ResourceMark rm;
nm->mark_for_deoptimization();
number_of_marked_CodeBlobs++;
} else {
// flush caches in case they refer to a redefined Method*
nm->clear_inline_caches();
} else {
// Inline caches that refer to an nmethod are deoptimized already, because
// the Method* is walked in the metadata section of the nmethod.
assert(!nm->is_evol_dependent(), "should no longer be necessary");
}
}