Avoid std::string allocations for finding an array class.

Introduce ClassLinker::FindArrayClass which performs an array class lookup
given the element/component class. This has a 16 element cache of recently
looked up arrays.
Pass the current thread to ClassLinker Find .. Class routines to avoid calls
to Thread::Current().
Avoid some uses of FindClass in the debugger where WellKnownClasses is a
faster and more compacting GC friendly alternative.

Change-Id: I60e231820b349543a7edb3ceb9cf1ce92db3c843

1 files changed, 2 insertions, 3 deletions

diff --git a/compiler/driver/compiler_driver_test.cc b/compiler/driver/compiler_driver_test.cc
index 0d0c204..ec0a8bd 100644
--- a/compiler/driver/compiler_driver_test.cc
+++ b/compiler/driver/compiler_driver_test.cc
@@ -79,9 +79,8 @@ class CompilerDriverTest : public CommonTest {
       const DexFile::ClassDef& class_def = dex_file.GetClassDef(i);
       const char* descriptor = dex_file.GetClassDescriptor(class_def);
       ScopedObjectAccess soa(Thread::Current());
-      Thread* self = Thread::Current();
-      SirtRef<mirror::ClassLoader> loader(self, soa.Decode<mirror::ClassLoader*>(class_loader));
-      mirror::Class* c = class_linker->FindClass(descriptor, loader);
+      SirtRef<mirror::ClassLoader> loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(class_loader));
+      mirror::Class* c = class_linker->FindClass(soa.Self(), descriptor, loader);
       CHECK(c != NULL);
       for (size_t i = 0; i < c->NumDirectMethods(); i++) {
         MakeExecutable(c->GetDirectMethod(i));