Add Method/Field iterator to ClassAccessor

Enables ranged based for loops on fields and methods.

For visiting both fields and methods, VisitFieldsAndMethods will
be faster because of not needing to decode the fields twice for
seeking purposes.

Added test.

Bug: 79758018
Bug: 77709234
Test: test-art-host-gtest

Change-Id: I593e23ccd138b87a27d8bab6927ff2b685c057f3

1 files changed, 9 insertions, 11 deletions

diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index decb330f3b..16f2d0f2cc 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -790,8 +790,7 @@ static void ResolveConstStrings(CompilerDriver* driver,
         // FIXME: Make sure that inlining honors this. b/26687569
         continue;
       }
-      accessor.VisitMethods([&](const ClassAccessor::Method& method)
-          REQUIRES_SHARED(Locks::mutator_lock_) {
+      for (const ClassAccessor::Method& method : accessor.GetMethods()) {
         // Resolve const-strings in the code. Done to have deterministic allocation behavior. Right
         // now this is single-threaded for simplicity.
         // TODO: Collect the relevant string indices in parallel, then allocate them sequentially
@@ -812,7 +811,7 @@ static void ResolveConstStrings(CompilerDriver* driver,
               break;
           }
         }
-      });
+      }
     }
   }
 }
@@ -880,10 +879,9 @@ static void InitializeTypeCheckBitstrings(CompilerDriver* driver,
       }
 
       // Direct and virtual methods.
-      accessor.VisitMethods([&](const ClassAccessor::Method& method)
-          REQUIRES_SHARED(Locks::mutator_lock_) {
+      for (const ClassAccessor::Method& method : accessor.GetMethods()) {
         InitializeTypeCheckBitstrings(driver, class_linker, dex_cache, *dex_file, method);
-      });
+      }
     }
   }
 }
@@ -1949,9 +1947,9 @@ bool CompilerDriver::FastVerify(jobject jclass_loader,
           // - We're only going to compile methods that did verify.
           // - Quickening will not do checkcast ellision.
           // TODO(ngeoffray): Reconsider this once we refactor compiler filters.
-          accessor.VisitMethods([&](const ClassAccessor::Method& method) {
+          for (const ClassAccessor::Method& method : accessor.GetMethods()) {
             verification_results_->CreateVerifiedMethodFor(method.GetReference());
-          });
+          }
         }
       } else if (!compiler_only_verifies) {
         // Make sure later compilation stages know they should not try to verify
@@ -2747,12 +2745,12 @@ static void CompileDexFile(CompilerDriver* driver,
 
     // Compile direct and virtual methods.
     int64_t previous_method_idx = -1;
-    accessor.VisitMethods([&](const ClassAccessor::Method& method) {
+    for (const ClassAccessor::Method& method : accessor.GetMethods()) {
       const uint32_t method_idx = method.GetIndex();
       if (method_idx == previous_method_idx) {
         // smali can create dex files with two encoded_methods sharing the same method_idx
         // http://code.google.com/p/smali/issues/detail?id=119
-        return;
+        continue;
       }
       previous_method_idx = method_idx;
       compile_fn(soa.Self(),
@@ -2767,7 +2765,7 @@ static void CompileDexFile(CompilerDriver* driver,
                  dex_to_dex_compilation_level,
                  compilation_enabled,
                  dex_cache);
-    });
+    }
   };
   context.ForAllLambda(0, dex_file.NumClassDefs(), compile, thread_count);
 }