Remove blacklist

Removes the class initialization blacklist and use transaction to detect and
revert class initialization attempting to invoke native method. This only
concerns class initialization happening at compilation time when generating an
image (like boot.art for the system).

In transactional mode, we log every object's field assignment and array update.
Therefore we're able to abort a transaction to restore values of fields and
array as they were before the transaction starts. We also log changes to the
intern string table so we can restore its state prior to transaction start.

Since transactional mode only happens at compilation time, we don't need to log
all these changes at runtime. In order to reduce the overhead of testing if
transactional mode is on/off, we templatize interfaces of mirror::Object and
mirror::Array, respectively responsible for setting a field and setting an
array element.

For various reasons, we skip some specific fields from transaction:
- Object's class and array's length must remain unchanged so garbage collector
can compute object's size.
- Immutable fields only set during class loading: list of fields, method,
dex caches, vtables, ... as all classes have been loaded and verified before a
transaction occurs.
- Object's monitor for performance reason.

Before generating the image, we browse the heap to collect objects that need to
be written into it. Since the heap may still holds references to unreachable
objects due to aborted transactions, we trigger one collection at the end of
the class preinitialization phase.

Since the transaction is held by the runtime and all compilation threads share
the same runtime, we need to ensure only one compilation thread has exclusive
access to the runtime. To workaround this issue, we force class initialization
phase to run with only one thread. Note this is only done when generating image
so application compilation is not impacted. This issue will be addressed in a
separate CL.

Bug: 9676614
Change-Id: I221910a9183a5ba6c2b99a277f5a5a68bc69b5f9

1 files changed, 27 insertions, 10 deletions

diff --git a/runtime/mirror/class.h b/runtime/mirror/class.h
index 82c8264..cd8504b 100644
--- a/runtime/mirror/class.h
+++ b/runtime/mirror/class.h
@@ -174,7 +174,8 @@ class MANAGED Class : public Object {
   uint32_t GetAccessFlags() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   void SetAccessFlags(uint32_t new_access_flags) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_), new_access_flags, false);
+    // Not called within a transaction.
+    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, access_flags_), new_access_flags, false);
   }
 
   // Returns true if the class is an interface.
@@ -275,7 +276,7 @@ class MANAGED Class : public Object {
 
   void SetPrimitiveType(Primitive::Type new_type) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     DCHECK_EQ(sizeof(Primitive::Type), sizeof(int32_t));
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, primitive_type_), new_type, false);
+    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, primitive_type_), new_type, false);
   }
 
   // Returns true if the class is a primitive type.
@@ -357,7 +358,11 @@ class MANAGED Class : public Object {
   void SetComponentType(Class* new_component_type) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     DCHECK(GetComponentType() == NULL);
     DCHECK(new_component_type != NULL);
-    SetFieldObject(ComponentTypeOffset(), new_component_type, false);
+    if (Runtime::Current()->IsActiveTransaction()) {
+      SetFieldObject<true>(ComponentTypeOffset(), new_component_type, false);
+    } else {
+      SetFieldObject<false>(ComponentTypeOffset(), new_component_type, false);
+    }
   }
 
   size_t GetComponentSize() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
@@ -406,7 +411,8 @@ class MANAGED Class : public Object {
 
   void SetObjectSize(uint32_t new_object_size) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     DCHECK(!IsVariableSize());
-    return SetField32(OFFSET_OF_OBJECT_MEMBER(Class, object_size_), new_object_size, false);
+    // Not called within a transaction.
+    return SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, object_size_), new_object_size, false);
   }
 
   // Returns true if this class is in the same packages as that class.
@@ -499,7 +505,7 @@ class MANAGED Class : public Object {
                                                    false);
     DCHECK(old_super_class == nullptr || old_super_class == new_super_class);
     DCHECK(new_super_class != nullptr);
-    SetFieldObject(OFFSET_OF_OBJECT_MEMBER(Class, super_class_), new_super_class, false);
+    SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(Class, super_class_), new_super_class, false);
   }
 
   bool HasSuperClass() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
@@ -672,7 +678,9 @@ class MANAGED Class : public Object {
   }
 
   void SetNumReferenceInstanceFields(uint32_t new_num) {
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_instance_fields_), new_num, false);
+    // Not called within a transaction.
+    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_instance_fields_), new_num,
+                      false);
   }
 
   uint32_t GetReferenceInstanceOffsets() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
@@ -700,7 +708,8 @@ class MANAGED Class : public Object {
   }
 
   void SetNumReferenceStaticFields(uint32_t new_num) {
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_static_fields_), new_num, false);
+    // Not called within a transaction.
+    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, num_reference_static_fields_), new_num, false);
   }
 
   // Gets the static fields of the class.
@@ -763,7 +772,13 @@ class MANAGED Class : public Object {
   }
 
   void SetClinitThreadId(pid_t new_clinit_thread_id) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, clinit_thread_id_), new_clinit_thread_id, false);
+    if (Runtime::Current()->IsActiveTransaction()) {
+      SetField32<true>(OFFSET_OF_OBJECT_MEMBER(Class, clinit_thread_id_), new_clinit_thread_id,
+                       false);
+    } else {
+      SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, clinit_thread_id_), new_clinit_thread_id,
+                        false);
+    }
   }
 
   Class* GetVerifyErrorClass() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
@@ -776,7 +791,8 @@ class MANAGED Class : public Object {
   }
 
   void SetDexClassDefIndex(uint16_t class_def_idx) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, dex_class_def_idx_), class_def_idx, false);
+    // Not called within a transaction.
+    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, dex_class_def_idx_), class_def_idx, false);
   }
 
   uint16_t GetDexTypeIndex() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
@@ -784,7 +800,8 @@ class MANAGED Class : public Object {
   }
 
   void SetDexTypeIndex(uint16_t type_idx) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    SetField32(OFFSET_OF_OBJECT_MEMBER(Class, dex_type_idx_), type_idx, false);
+    // Not called within a transaction.
+    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(Class, dex_type_idx_), type_idx, false);
   }
 
   static Class* GetJavaLangClass() {