ART: PathClassLoader for compiler

Use an actual PathClassLoader when compiling apps, instead of a
side structure and cutout.

This CL sets up a minimal object 'cluster' that recreates the Java
side of a regular ClassLoader such that the Class-Linker will
recognize it and use the internal native fast-path.

This CL removes the now unnecessary compile-time-classpath and
replaces it with a single 'compiling-the-boot-image' flag in the
compiler callbacks.

Note: This functionality is *only* intended for the compiler, as
the objects have not been completely initialized.

Bug: 19781184

Change-Id: I7f36af12dd7852d21281110a25c119e8c0669c1d

1 files changed, 1 insertions, 5 deletions

diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index daca971..7bde471 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -2158,16 +2158,12 @@ static int DumpOatWithRuntime(Runtime* runtime, OatFile* oat_file, OatDumperOpti
   }
 
   // Need a class loader.
-  soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader);
-  ScopedLocalRef<jobject> class_loader_local(soa.Env(),
-      soa.Env()->AllocObject(WellKnownClasses::dalvik_system_PathClassLoader));
-  jobject class_loader = soa.Env()->NewGlobalRef(class_loader_local.get());
   // Fake that we're a compiler.
   std::vector<const DexFile*> class_path;
   for (auto& dex_file : dex_files) {
     class_path.push_back(dex_file.get());
   }
-  runtime->SetCompileTimeClassPath(class_loader, class_path);
+  jobject class_loader = class_linker->CreatePathClassLoader(self, class_path);
 
   // Use the class loader while dumping.
   StackHandleScope<1> scope(self);