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-rw-r--r--runtime/class_linker.cc40
-rw-r--r--runtime/class_linker.h13
-rw-r--r--runtime/class_linker_test.cc2
-rw-r--r--runtime/gc/accounting/card_table-inl.h8
-rw-r--r--runtime/intern_table.cc19
-rw-r--r--runtime/intern_table.h9
-rw-r--r--runtime/runtime.cc8
7 files changed, 46 insertions, 53 deletions
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 179fb1a..c19f872 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -192,7 +192,8 @@ ClassLinker::ClassLinker(InternTable* intern_table)
class_roots_(NULL),
array_iftable_(NULL),
init_done_(false),
- is_dirty_(false),
+ dex_caches_dirty_(false),
+ class_table_dirty_(false),
intern_table_(intern_table),
portable_resolution_trampoline_(NULL),
quick_resolution_trampoline_(NULL) {
@@ -1088,24 +1089,32 @@ void ClassLinker::InitFromImage() {
// Keep in sync with InitCallback. Anything we visit, we need to
// reinit references to when reinitializing a ClassLinker from a
// mapped image.
-void ClassLinker::VisitRoots(RootVisitor* visitor, void* arg, bool clean_dirty) {
- class_roots_ = reinterpret_cast<mirror::ObjectArray<mirror::Class>*>(visitor(class_roots_, arg));
- DCHECK(class_roots_ != nullptr);
-
+void ClassLinker::VisitRoots(RootVisitor* visitor, void* arg, bool only_dirty, bool clean_dirty) {
+ class_roots_ = down_cast<mirror::ObjectArray<mirror::Class>*>(visitor(class_roots_, arg));
Thread* self = Thread::Current();
{
ReaderMutexLock mu(self, dex_lock_);
- for (mirror::DexCache*& dex_cache : dex_caches_) {
- dex_cache = reinterpret_cast<mirror::DexCache*>(visitor(dex_cache, arg));
- DCHECK(dex_cache != nullptr);
+ if (!only_dirty || dex_caches_dirty_) {
+ for (mirror::DexCache*& dex_cache : dex_caches_) {
+ dex_cache = down_cast<mirror::DexCache*>(visitor(dex_cache, arg));
+ DCHECK(dex_cache != nullptr);
+ }
+ if (clean_dirty) {
+ dex_caches_dirty_ = false;
+ }
}
}
{
ReaderMutexLock mu(self, *Locks::classlinker_classes_lock_);
- for (std::pair<size_t const, mirror::Class*>& it : class_table_) {
- it.second = reinterpret_cast<mirror::Class*>(visitor(it.second, arg));
- DCHECK(it.second != nullptr);
+ if (!only_dirty || class_table_dirty_) {
+ for (std::pair<const size_t, mirror::Class*>& it : class_table_) {
+ it.second = down_cast<mirror::Class*>(visitor(it.second, arg));
+ DCHECK(it.second != nullptr);
+ }
+ if (clean_dirty) {
+ class_table_dirty_ = false;
+ }
}
// We deliberately ignore the class roots in the image since we
@@ -1114,9 +1123,6 @@ void ClassLinker::VisitRoots(RootVisitor* visitor, void* arg, bool clean_dirty)
array_iftable_ = reinterpret_cast<mirror::IfTable*>(visitor(array_iftable_, arg));
DCHECK(array_iftable_ != nullptr);
- if (clean_dirty) {
- is_dirty_ = false;
- }
}
void ClassLinker::VisitClasses(ClassVisitor* visitor, void* arg) {
@@ -1933,7 +1939,7 @@ void ClassLinker::RegisterDexFileLocked(const DexFile& dex_file, SirtRef<mirror:
CHECK(dex_cache->GetLocation()->Equals(dex_file.GetLocation()));
dex_caches_.push_back(dex_cache.get());
dex_cache->SetDexFile(&dex_file);
- Dirty();
+ dex_caches_dirty_ = true;
}
void ClassLinker::RegisterDexFile(const DexFile& dex_file) {
@@ -2208,7 +2214,7 @@ mirror::Class* ClassLinker::InsertClass(const char* descriptor, mirror::Class* k
}
Runtime::Current()->GetHeap()->VerifyObject(klass);
class_table_.insert(std::make_pair(hash, klass));
- Dirty();
+ class_table_dirty_ = true;
return NULL;
}
@@ -2321,7 +2327,7 @@ void ClassLinker::MoveImageClassesToClassTable() {
}
}
}
- Dirty();
+ class_table_dirty_ = true;
dex_cache_image_class_lookup_required_ = false;
self->EndAssertNoThreadSuspension(old_no_suspend_cause);
}
diff --git a/runtime/class_linker.h b/runtime/class_linker.h
index c5fb72c..20efbb4 100644
--- a/runtime/class_linker.h
+++ b/runtime/class_linker.h
@@ -231,7 +231,7 @@ class ClassLinker {
LOCKS_EXCLUDED(dex_lock_)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
- void VisitRoots(RootVisitor* visitor, void* arg, bool clean_dirty)
+ void VisitRoots(RootVisitor* visitor, void* arg, bool only_dirty, bool clean_dirty)
LOCKS_EXCLUDED(Locks::classlinker_classes_lock_, dex_lock_);
mirror::DexCache* FindDexCache(const DexFile& dex_file) const
@@ -335,14 +335,6 @@ class ClassLinker {
pid_t GetClassesLockOwner(); // For SignalCatcher.
pid_t GetDexLockOwner(); // For SignalCatcher.
- bool IsDirty() const {
- return is_dirty_;
- }
-
- void Dirty() {
- is_dirty_ = true;
- }
-
const void* GetPortableResolutionTrampoline() const {
return portable_resolution_trampoline_;
}
@@ -617,7 +609,8 @@ class ClassLinker {
mirror::IfTable* array_iftable_;
bool init_done_;
- bool is_dirty_;
+ bool dex_caches_dirty_ GUARDED_BY(dex_lock_);
+ bool class_table_dirty_ GUARDED_BY(Locks::classlinker_classes_lock_);
InternTable* intern_table_;
diff --git a/runtime/class_linker_test.cc b/runtime/class_linker_test.cc
index 192111f..0fa0ffb 100644
--- a/runtime/class_linker_test.cc
+++ b/runtime/class_linker_test.cc
@@ -331,7 +331,7 @@ class ClassLinkerTest : public CommonTest {
const char* descriptor = dex->GetTypeDescriptor(type_id);
AssertDexFileClass(class_loader, descriptor);
}
- class_linker_->VisitRoots(TestRootVisitor, NULL, false);
+ class_linker_->VisitRoots(TestRootVisitor, NULL, false, false);
// Verify the dex cache has resolution methods in all resolved method slots
mirror::DexCache* dex_cache = class_linker_->FindDexCache(*dex);
mirror::ObjectArray<mirror::ArtMethod>* resolved_methods = dex_cache->GetResolvedMethods();
diff --git a/runtime/gc/accounting/card_table-inl.h b/runtime/gc/accounting/card_table-inl.h
index c5e8812..0cfbd6f 100644
--- a/runtime/gc/accounting/card_table-inl.h
+++ b/runtime/gc/accounting/card_table-inl.h
@@ -64,10 +64,9 @@ inline void CardTable::Scan(SpaceBitmap* bitmap, byte* scan_begin, byte* scan_en
byte* aligned_end = card_end -
(reinterpret_cast<uintptr_t>(card_end) & (sizeof(uintptr_t) - 1));
- // Now we have the words, we can send these to be processed in parallel.
- uintptr_t* word_cur = reinterpret_cast<uintptr_t*>(card_cur);
uintptr_t* word_end = reinterpret_cast<uintptr_t*>(aligned_end);
- for (;;) {
+ for (uintptr_t* word_cur = reinterpret_cast<uintptr_t*>(card_cur); word_cur < word_end;
+ ++word_cur) {
while (LIKELY(*word_cur == 0)) {
++word_cur;
if (UNLIKELY(word_cur >= word_end)) {
@@ -78,6 +77,8 @@ inline void CardTable::Scan(SpaceBitmap* bitmap, byte* scan_begin, byte* scan_en
// Find the first dirty card.
uintptr_t start_word = *word_cur;
uintptr_t start = reinterpret_cast<uintptr_t>(AddrFromCard(reinterpret_cast<byte*>(word_cur)));
+ // TODO: Investigate if processing continuous runs of dirty cards with a single bitmap visit is
+ // more efficient.
for (size_t i = 0; i < sizeof(uintptr_t); ++i) {
if (static_cast<byte>(start_word) >= minimum_age) {
auto* card = reinterpret_cast<byte*>(word_cur) + i;
@@ -88,7 +89,6 @@ inline void CardTable::Scan(SpaceBitmap* bitmap, byte* scan_begin, byte* scan_en
start_word >>= 8;
start += kCardSize;
}
- ++word_cur;
}
exit_for:
diff --git a/runtime/intern_table.cc b/runtime/intern_table.cc
index 6b0a51b..472c92e 100644
--- a/runtime/intern_table.cc
+++ b/runtime/intern_table.cc
@@ -42,14 +42,17 @@ void InternTable::DumpForSigQuit(std::ostream& os) const {
}
void InternTable::VisitRoots(RootVisitor* visitor, void* arg,
- bool clean_dirty) {
+ bool only_dirty, bool clean_dirty) {
MutexLock mu(Thread::Current(), intern_table_lock_);
- for (auto& strong_intern : strong_interns_) {
- strong_intern.second = reinterpret_cast<mirror::String*>(visitor(strong_intern.second, arg));
- DCHECK(strong_intern.second != nullptr);
- }
- if (clean_dirty) {
- is_dirty_ = false;
+ if (!only_dirty || is_dirty_) {
+ for (auto& strong_intern : strong_interns_) {
+ strong_intern.second = reinterpret_cast<mirror::String*>(visitor(strong_intern.second, arg));
+ DCHECK(strong_intern.second != nullptr);
+ }
+
+ if (clean_dirty) {
+ is_dirty_ = false;
+ }
}
// Note: we deliberately don't visit the weak_interns_ table and the immutable image roots.
}
@@ -123,7 +126,7 @@ mirror::String* InternTable::Insert(mirror::String* s, bool is_strong) {
}
// Mark as dirty so that we rescan the roots.
- Dirty();
+ is_dirty_ = true;
// Check the image for a match.
mirror::String* image = LookupStringFromImage(s);
diff --git a/runtime/intern_table.h b/runtime/intern_table.h
index a804d1f..07615dc 100644
--- a/runtime/intern_table.h
+++ b/runtime/intern_table.h
@@ -62,15 +62,10 @@ class InternTable {
size_t Size() const;
- void VisitRoots(RootVisitor* visitor, void* arg, bool clean_dirty);
+ void VisitRoots(RootVisitor* visitor, void* arg, bool only_dirty, bool clean_dirty);
void DumpForSigQuit(std::ostream& os) const;
- bool IsDirty() const { return is_dirty_; }
- void Dirty() {
- is_dirty_ = true;
- }
-
private:
typedef std::multimap<int32_t, mirror::String*> Table;
@@ -83,7 +78,7 @@ class InternTable {
void Remove(Table& table, const mirror::String* s, uint32_t hash_code);
mutable Mutex intern_table_lock_;
- bool is_dirty_;
+ bool is_dirty_ GUARDED_BY(intern_table_lock_);
Table strong_interns_ GUARDED_BY(intern_table_lock_);
Table weak_interns_ GUARDED_BY(intern_table_lock_);
};
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index 477fcaf..02ed59f 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -1132,12 +1132,8 @@ void Runtime::DetachCurrentThread() {
void Runtime::VisitConcurrentRoots(RootVisitor* visitor, void* arg, bool only_dirty,
bool clean_dirty) {
- if (!only_dirty || intern_table_->IsDirty()) {
- intern_table_->VisitRoots(visitor, arg, clean_dirty);
- }
- if (!only_dirty || class_linker_->IsDirty()) {
- class_linker_->VisitRoots(visitor, arg, clean_dirty);
- }
+ intern_table_->VisitRoots(visitor, arg, only_dirty, clean_dirty);
+ class_linker_->VisitRoots(visitor, arg, only_dirty, clean_dirty);
}
void Runtime::VisitNonThreadRoots(RootVisitor* visitor, void* arg) {
generated by cgit v1.1 at 2024-09-15 11:05:13 +0000