ART: Move read barrier config out of globals
Reduce the global dependencies by refactoring where the read
barrier constants are defined.
Rename read_barier_c.h to read_barier_config.h and ifdef the
C++ parts to have a common header for both C/asm and C++.
Put heap poisoning configuration into its own minimal header.
Fix up transitive includes.
Test: m
Change-Id: I159669ec61e3d1c4c7ddcd79e63b023a0519717a
diff --git a/runtime/heap_poisoning.h b/runtime/heap_poisoning.h
new file mode 100644
index 0000000..5e6b635
--- /dev/null
+++ b/runtime/heap_poisoning.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+#ifndef ART_RUNTIME_HEAP_POISONING_H_
+#define ART_RUNTIME_HEAP_POISONING_H_
+
+// This is a C and C++ header used for both assembly code and mainline code.
+
+#ifdef ART_HEAP_POISONING
+#define USE_HEAP_POISONING
+#endif
+
+#ifdef __cplusplus
+
+namespace art {
+
+// If true, references within the heap are poisoned (negated).
+#ifdef USE_HEAP_POISONING
+static constexpr bool kPoisonHeapReferences = true;
+#else
+static constexpr bool kPoisonHeapReferences = false;
+#endif
+
+} // namespace art
+
+#endif // __cplusplus
+
+#endif // ART_RUNTIME_HEAP_POISONING_H_