Refactor allocation entrypoints.

Adds support for switching entrypoints during runtime. Enables
addition of new allocators with out requiring significant copy
paste. Slight speedup on ritzperf probably due to more inlining.

TODO: Ensuring that the entire allocation path is inlined so
that the switch statement in the allocation code is optimized
out.

Rosalloc measurements:
4583
4453
4439
4434
4751

After change:
4184
4287
4131
4335
4097

Change-Id: I1352a3cbcdf6dae93921582726324d91312df5c9

1 files changed, 85 insertions, 0 deletions

diff --git a/runtime/arch/quick_alloc_entrypoints.cc b/runtime/arch/quick_alloc_entrypoints.cc
new file mode 100644
index 0000000000..192b1241e5
--- /dev/null
+++ b/runtime/arch/quick_alloc_entrypoints.cc
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "entrypoints/quick/quick_entrypoints.h"
+#include "gc/heap.h"
+
+#define GENERATE_ENTRYPOINTS(suffix) \
+extern "C" void* art_quick_alloc_array##suffix(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_alloc_array_with_access_check##suffix(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_alloc_object##suffix(uint32_t type_idx, void* method); \
+extern "C" void* art_quick_alloc_object_with_access_check##suffix(uint32_t type_idx, void* method); \
+extern "C" void* art_quick_check_and_alloc_array##suffix(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_check_and_alloc_array_with_access_check##suffix(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_alloc_array##suffix##_instrumented(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_alloc_array_with_access_check##suffix##_instrumented(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_alloc_object##suffix##_instrumented(uint32_t type_idx, void* method); \
+extern "C" void* art_quick_alloc_object_with_access_check##suffix##_instrumented(uint32_t type_idx, void* method); \
+extern "C" void* art_quick_check_and_alloc_array##suffix##_instrumented(uint32_t, void*, int32_t); \
+extern "C" void* art_quick_check_and_alloc_array_with_access_check##suffix##_instrumented(uint32_t, void*, int32_t); \
+void SetQuickAllocEntryPoints##suffix(QuickEntryPoints* qpoints, bool instrumented) { \
+  if (instrumented) { \
+    qpoints->pAllocArray = art_quick_alloc_array##suffix##_instrumented; \
+    qpoints->pAllocArrayWithAccessCheck = art_quick_alloc_array_with_access_check##suffix##_instrumented; \
+    qpoints->pAllocObject = art_quick_alloc_object##suffix##_instrumented; \
+    qpoints->pAllocObjectWithAccessCheck = art_quick_alloc_object_with_access_check##suffix##_instrumented; \
+    qpoints->pCheckAndAllocArray = art_quick_check_and_alloc_array##suffix##_instrumented; \
+    qpoints->pCheckAndAllocArrayWithAccessCheck = art_quick_check_and_alloc_array_with_access_check##suffix##_instrumented; \
+  } else { \
+    qpoints->pAllocArray = art_quick_alloc_array##suffix; \
+    qpoints->pAllocArrayWithAccessCheck = art_quick_alloc_array_with_access_check##suffix; \
+    qpoints->pAllocObject = art_quick_alloc_object##suffix; \
+    qpoints->pAllocObjectWithAccessCheck = art_quick_alloc_object_with_access_check##suffix; \
+    qpoints->pCheckAndAllocArray = art_quick_check_and_alloc_array##suffix; \
+    qpoints->pCheckAndAllocArrayWithAccessCheck = art_quick_check_and_alloc_array_with_access_check##suffix; \
+  } \
+}
+
+namespace art {
+
+// Generate the entrypoint functions.
+GENERATE_ENTRYPOINTS();
+GENERATE_ENTRYPOINTS(_bump_pointer);
+
+static bool entry_points_instrumented = false;
+static gc::AllocatorType entry_points_allocator = kMovingCollector ?
+    gc::kAllocatorTypeBumpPointer : gc::kAllocatorTypeFreeList;
+
+void SetQuickAllocEntryPointsAllocator(gc::AllocatorType allocator) {
+  entry_points_allocator = allocator;
+}
+
+void SetQuickAllocEntryPointsInstrumented(bool instrumented) {
+  entry_points_instrumented = instrumented;
+}
+
+void ResetQuickAllocEntryPoints(QuickEntryPoints* qpoints) {
+  switch (entry_points_allocator) {
+    case gc::kAllocatorTypeFreeList: {
+      SetQuickAllocEntryPoints(qpoints, entry_points_instrumented);
+      break;
+    }
+    case gc::kAllocatorTypeBumpPointer: {
+      SetQuickAllocEntryPoints_bump_pointer(qpoints, entry_points_instrumented);
+      break;
+    }
+    default: {
+      LOG(FATAL) << "Unimplemented";
+    }
+  }
+}
+
+}  // namespace art